Version 23.72: Apr 01, 2024 New type Usr_ICan_t.

swad_API.c

@@ -1772,7 +1772,7 @@ static void API_CopyListUsers (struct soap *soap,
 
 	 /* Get list of user's IDs */
          ID_GetListIDsFromUsrCod (&UsrDat);
-         ICanSeeUsrID = ID_ICanSeeOtherUsrIDs (&UsrDat);
+         ICanSeeUsrID = (ID_ICanSeeOtherUsrIDs (&UsrDat) == Usr_I_CAN);
 
 	 /* Get nickname */
          Nck_DB_GetNicknameFromUsrCod (UsrDat.UsrCod,UsrDat.Nickname);
@@ -4326,7 +4326,6 @@ int swad__getMatchStatus (struct soap *soap,
    int ReturnCode;
    struct Gam_Game Game;
    struct Mch_Match Match;
-   bool ICanPlayThisMatchBasedOnGrps;
    struct Mch_UsrAnswer UsrAnswer;
 
    /***** Reset game and match *****/
@@ -4395,8 +4394,7 @@ int swad__getMatchStatus (struct soap *soap,
 				  "Requester must be a student in the course");
 
    /***** Can I play this match? *****/
-   ICanPlayThisMatchBasedOnGrps = Mch_CheckIfICanPlayThisMatchBasedOnGrps (&Match);
+   if (Mch_CheckIfICanPlayThisMatchBasedOnGrps (&Match) == Usr_I_CAN_NOT)
-   if (!ICanPlayThisMatchBasedOnGrps)
       return soap_receiver_fault (soap,
 				  "Request forbidden",
 				  "Requester can not join this match");
@@ -5263,7 +5261,7 @@ int swad__getLastLocation (struct soap *soap,
    The other user does not have to share any course with me,
    but at least some course of each one has to share center.
    */
-   if (Roo_DB_CheckIfICanSeeUsrLocation ((long) userCode))
+   if (Roo_DB_CheckIfICanSeeUsrLocation ((long) userCode) == Usr_I_CAN)
      {
       /***** Get list of locations *****/
       NumLocs = Roo_DB_GetUsrLastLocation (&mysql_res,(long) userCode);

swad_ID.c

@@ -308,7 +308,7 @@ static bool ID_CheckIfUsrIDIsValidUsingMinDigits (const char *UsrID,unsigned Min
 void ID_WriteUsrIDs (struct Usr_Data *UsrDat,const char *Anchor)
   {
    unsigned NumID;
-   bool ICanSeeUsrID     = ID_ICanSeeOtherUsrIDs (UsrDat);
+   bool ICanSeeUsrID     = (ID_ICanSeeOtherUsrIDs (UsrDat) == Usr_I_CAN);
    bool ICanConfirmUsrID = ICanSeeUsrID &&
 			   Usr_ItsMe (UsrDat->UsrCod) == Usr_OTHER &&			// Not me
 			   !Frm_CheckIfInside () &&					// Not inside another form
@@ -343,11 +343,11 @@ void ID_WriteUsrIDs (struct Usr_Data *UsrDat,const char *Anchor)
 /***************** Check if I can see another user's IDs *********************/
 /*****************************************************************************/
 
-bool ID_ICanSeeOtherUsrIDs (const struct Usr_Data *UsrDat)
+Usr_ICan_t ID_ICanSeeOtherUsrIDs (const struct Usr_Data *UsrDat)
   {
    /***** Fast check: It's me? *****/
    if (Usr_ItsMe (UsrDat->UsrCod) == Usr_ME)
-      return true;
+      return Usr_I_CAN;
 
    /***** Check if I have permission to see another user's IDs *****/
    switch (Gbl.Usrs.Me.Role.Logged)
@@ -356,12 +356,12 @@ bool ID_ICanSeeOtherUsrIDs (const struct Usr_Data *UsrDat)
       case Rol_TCH:
 	 /* Check 1: I can see the IDs of users who do not exist in database */
          if (UsrDat->UsrCod <= 0)	// User does not exist (when creating a new user)
-            return true;
+            return Usr_I_CAN;
 
 	 /* Check 2: I can see the IDs of confirmed students */
          if (UsrDat->Roles.InCurrentCrs == Rol_STD &&	// A student
 	     UsrDat->Accepted)				// who accepted registration
-            return true;
+            return Usr_I_CAN;
 
          /* Check 3: I can see the IDs of users with user's data empty */
          // This check is made to not view simultaneously:
@@ -372,16 +372,16 @@ bool ID_ICanSeeOtherUsrIDs (const struct Usr_Data *UsrDat)
 	     !UsrDat->Surname2[0] &&	// and who has no surname 2 (nobody filled user's surname 2)
 	     !UsrDat->FrstName[0] &&	// and who has no first name (nobody filled user's first name)
              !UsrDat->Email[0])		// and who has no email (nobody filled user's email)
-            return true;
+            return Usr_I_CAN;
 
-         return false;
+         return Usr_I_CAN_NOT;
       case Rol_DEG_ADM:
       case Rol_CTR_ADM:
       case Rol_INS_ADM:
       case Rol_SYS_ADM:
-         return Usr_ICanEditOtherUsr (UsrDat);
+         return Usr_CheckIfICanEditOtherUsr (UsrDat);
       default:
-	 return false;
+	 return Usr_I_CAN_NOT;
      }
   }
 
@@ -691,7 +691,7 @@ void ID_RemoveOtherUsrID (void)
    /***** Get other user's code from form and get user's data *****/
    if (Usr_GetParOtherUsrCodEncryptedAndGetUsrData ())
      {
-      if (Usr_ICanEditOtherUsr (&Gbl.Usrs.Other.UsrDat))
+      if (Usr_CheckIfICanEditOtherUsr (&Gbl.Usrs.Other.UsrDat) == Usr_I_CAN)
 	{
 	 /***** Remove user's ID *****/
 	 ID_RemoveUsrID (&Gbl.Usrs.Other.UsrDat,
@@ -721,7 +721,7 @@ static void ID_RemoveUsrID (const struct Usr_Data *UsrDat,Usr_MeOrOther_t MeOrOt
    char UsrID[ID_MAX_BYTES_USR_ID + 1];
    bool ICanRemove;
 
-   if (Usr_ICanEditOtherUsr (UsrDat))
+   if (Usr_CheckIfICanEditOtherUsr (UsrDat) == Usr_I_CAN)
      {
       /***** Get user's ID from form *****/
       Par_GetParText ("UsrID",UsrID,ID_MAX_BYTES_USR_ID);
@@ -787,7 +787,7 @@ void ID_ChangeOtherUsrID (void)
    /***** Get other user's code from form and get user's data *****/
    if (Usr_GetParOtherUsrCodEncryptedAndGetUsrData ())
      {
-      if (Usr_ICanEditOtherUsr (&Gbl.Usrs.Other.UsrDat))
+      if (Usr_CheckIfICanEditOtherUsr (&Gbl.Usrs.Other.UsrDat) == Usr_I_CAN)
 	{
 	 /***** Change user's ID *****/
 	 ID_ChangeUsrID (&Gbl.Usrs.Other.UsrDat,
@@ -822,7 +822,7 @@ static void ID_ChangeUsrID (const struct Usr_Data *UsrDat,Usr_MeOrOther_t MeOrOt
    bool AlreadyExists;
    unsigned NumIDFound = 0;	// Initialized to avoid warning
 
-   if (Usr_ICanEditOtherUsr (UsrDat))
+   if (Usr_CheckIfICanEditOtherUsr (UsrDat) == Usr_I_CAN)
      {
       /***** Get new user's ID from form *****/
       Par_GetParText ("NewID",NewID,ID_MAX_BYTES_USR_ID);
@@ -911,7 +911,7 @@ void ID_ConfirmOtherUsrID (void)
 	    if (Gbl.Usrs.Other.UsrDat.Roles.InCurrentCrs == Rol_STD)
 	       Gbl.Usrs.Other.UsrDat.Accepted = Enr_CheckIfUsrHasAcceptedInCurrentCrs (&Gbl.Usrs.Other.UsrDat);
 
-	 if (ID_ICanSeeOtherUsrIDs (&Gbl.Usrs.Other.UsrDat))
+	 if (ID_ICanSeeOtherUsrIDs (&Gbl.Usrs.Other.UsrDat) == Usr_I_CAN)
 	    ICanConfirm = true;
         }
 

swad_ID.h

@@ -70,7 +70,7 @@ bool ID_CheckIfUsrIDIsValid (const char *UsrID);
 bool ID_CheckIfUsrIDSeemsAValidID (const char *UsrID);
 
 void ID_WriteUsrIDs (struct Usr_Data *UsrDat,const char *Anchor);
-bool ID_ICanSeeOtherUsrIDs (const struct Usr_Data *UsrDat);
+Usr_ICan_t ID_ICanSeeOtherUsrIDs (const struct Usr_Data *UsrDat);
 
 void ID_ShowFormChangeMyID (bool IShouldFillInID);
 void ID_ShowFormChangeOtherUsrID (void);

swad_account.c

@@ -488,7 +488,7 @@ void Acc_ShowFormChgOtherUsrAccount (void)
    /***** Get user whose account must be changed *****/
    if (Usr_GetParOtherUsrCodEncryptedAndGetUsrData ())
      {
-      if (Usr_ICanEditOtherUsr (&Gbl.Usrs.Other.UsrDat))
+      if (Usr_CheckIfICanEditOtherUsr (&Gbl.Usrs.Other.UsrDat) == Usr_I_CAN)
 	{
 	 /***** Get user's nickname and email address
 		It's necessary because nickname or email could be just updated *****/
@@ -530,7 +530,7 @@ void Acc_ShowFormChgOtherUsrAccount (void)
 
 void Acc_PutLinkToRemoveMyAccount (__attribute__((unused)) void *Args)
   {
-   if (Acc_CheckIfICanEliminateAccount (Gbl.Usrs.Me.UsrDat.UsrCod))
+   if (Acc_CheckIfICanEliminateAccount (Gbl.Usrs.Me.UsrDat.UsrCod) == Usr_I_CAN)
       Lay_PutContextualLinkOnlyIcon (ActReqRemMyAcc,NULL,
 				     Acc_PutParsToRemoveMyAccount,Gbl.Usrs.Me.UsrDat.EnUsrCod,
 				     "trash.svg",Ico_RED);
@@ -771,7 +771,7 @@ void Acc_GetUsrCodAndRemUsrGbl (void)
 
    if (Usr_GetParOtherUsrCodEncryptedAndGetUsrData ())
      {
-      if (Acc_CheckIfICanEliminateAccount (Gbl.Usrs.Other.UsrDat.UsrCod))
+      if (Acc_CheckIfICanEliminateAccount (Gbl.Usrs.Other.UsrDat.UsrCod) == Usr_I_CAN)
          Acc_ReqRemAccountOrRemAccount (Acc_REMOVE_USR);
       else
          Error = true;
@@ -814,7 +814,7 @@ void Acc_ReqRemAccountOrRemAccount (Acc_ReqOrRemUsr_t RequestOrRemove)
 /******** Check if I can eliminate completely another user's account *********/
 /*****************************************************************************/
 
-bool Acc_CheckIfICanEliminateAccount (long UsrCod)
+Usr_ICan_t Acc_CheckIfICanEliminateAccount (long UsrCod)
   {
    Usr_MeOrOther_t MeOrOther = Usr_ItsMe (UsrCod);
 
@@ -823,10 +823,14 @@ bool Acc_CheckIfICanEliminateAccount (long UsrCod)
    switch (MeOrOther)
      {
       case Usr_ME:
-	 return (Gbl.Usrs.Me.Role.Available & (1 << Rol_SYS_ADM)) == 0;	// I can not be system admin
+	 // A system admin can not eliminate him/herself
+	 return (Gbl.Usrs.Me.Role.Available & (1 << Rol_SYS_ADM)) == 0 ? Usr_I_CAN :
+									 Usr_I_CAN_NOT;
       case Usr_OTHER:
       default:
-	 return Gbl.Usrs.Me.Role.Logged == Rol_SYS_ADM;			// I am logged as system admin
+	 // Only a system admin can eliminate other's account
+	 return Gbl.Usrs.Me.Role.Logged == Rol_SYS_ADM ? Usr_I_CAN :
+							 Usr_I_CAN_NOT;
      }
   }
 
@@ -1100,7 +1104,7 @@ void Acc_PutIconToChangeUsrAccount (struct Usr_Data *UsrDat)
          break;
       case Usr_OTHER:
       default:
-	 if (Usr_ICanEditOtherUsr (UsrDat))
+	 if (Usr_CheckIfICanEditOtherUsr (UsrDat) == Usr_I_CAN)
 	    Lay_PutContextualLinkOnlyIcon (NextAction[UsrDat->Roles.InCurrentCrs],NULL,
 					   Rec_PutParUsrCodEncrypted,NULL,
 					   "at.svg",Ico_BLACK);

swad_account.h

@@ -62,7 +62,7 @@ void Acc_AfterCreationNewAccount (void);
 void Acc_GetUsrCodAndRemUsrGbl (void);
 void Acc_ReqRemAccountOrRemAccount (Acc_ReqOrRemUsr_t RequestOrRemove);
 
-bool Acc_CheckIfICanEliminateAccount (long UsrCod);
+Usr_ICan_t Acc_CheckIfICanEliminateAccount (long UsrCod);
 void Acc_AskIfRemoveMyAccount (void);
 void Acc_RemoveMyAccount (void);
 void Acc_CompletelyEliminateAccount (struct Usr_Data *UsrDat,

swad_admin.c

@@ -34,20 +34,6 @@
 #include "swad_global.h"
 #include "swad_user_database.h"
 
-/*****************************************************************************/
-/****************************** Public constants *****************************/
-/*****************************************************************************/
-
-const bool Adm_ICanAdminOtherUsrs[Rol_NUM_ROLES] =
-  {
-   /* Users who can admin */
-   [Rol_TCH    ] = true,
-   [Rol_DEG_ADM] = true,
-   [Rol_CTR_ADM] = true,
-   [Rol_INS_ADM] = true,
-   [Rol_SYS_ADM] = true,
-  };
-
 /*****************************************************************************/
 /************** External global variables from others modules ****************/
 /*****************************************************************************/
@@ -66,6 +52,25 @@ static void Adm_ReqRemOrRemAdm (Enr_ReqDelOrDelUsr_t ReqDelOrDelUsr,
 static void Adm_AskIfRemAdm (Usr_MeOrOther_t MeOrOther,Hie_Level_t Level);
 static void Adm_EffectivelyRemAdm (struct Usr_Data *UsrDat,Hie_Level_t Level);
 
+/*****************************************************************************/
+/**************** Check if I can admin another user's account ****************/
+/*****************************************************************************/
+
+Usr_ICan_t Adm_CheckIfICanAdminOtherUsrs (void)
+  {
+   static Usr_ICan_t Adm_ICanAdminOtherUsrs[Rol_NUM_ROLES] =
+     {
+      /* Users who can admin */
+      [Rol_TCH    ] = Usr_I_CAN,
+      [Rol_DEG_ADM] = Usr_I_CAN,
+      [Rol_CTR_ADM] = Usr_I_CAN,
+      [Rol_INS_ADM] = Usr_I_CAN,
+      [Rol_SYS_ADM] = Usr_I_CAN,
+     };
+
+   return Adm_ICanAdminOtherUsrs[Gbl.Usrs.Me.Role.Logged];
+  }
+
 /*****************************************************************************/
 /**** Ask if really wanted to add an administrator to current institution ****/
 /*****************************************************************************/

swad_admin.h

@@ -35,6 +35,8 @@
 /****************************** Public prototypes ****************************/
 /*****************************************************************************/
 
+Usr_ICan_t Adm_CheckIfICanAdminOtherUsrs (void);
+
 void Adm_ReqAddAdm (Hie_Level_t Level);
 
 void Adm_AddAdmToIns (void);

swad_agenda.c

@@ -121,6 +121,29 @@ static void Agd_FreeListEvents (struct Agd_Agenda *Agenda);
 
 static void Agd_HideUnhideEvent (HidVis_HiddenOrVisible_t HiddenOrVisible);
 
+/*****************************************************************************/
+/******************* Check if I can view a user's agenda *********************/
+/*****************************************************************************/
+
+Usr_ICan_t Agd_CheckIfICanViewUsrAgenda (struct Usr_Data *UsrDat)
+  {
+   /***** 1. Fast check: Am I logged? *****/
+   if (!Gbl.Usrs.Me.Logged)
+      return Usr_I_CAN_NOT;
+
+   /***** 2. Fast check: It's me? *****/
+   if (Usr_ItsMe (UsrDat->UsrCod) == Usr_ME)
+      return Usr_I_CAN;
+
+   /***** 3. Fast check: Am I logged as system admin? *****/
+   if (Gbl.Usrs.Me.Role.Logged == Rol_SYS_ADM)
+      return Usr_I_CAN;
+
+   /***** 4. Slow check: Get if user shares any course with me from database *****/
+   return Enr_CheckIfUsrSharesAnyOfMyCrs (UsrDat) ? Usr_I_CAN :
+						    Usr_I_CAN_NOT;
+  }
+
 /*****************************************************************************/
 /*************************** Reset agenda context ****************************/
 /*****************************************************************************/
@@ -386,7 +409,7 @@ void Agd_ShowUsrAgenda (void)
 
    /***** Get user *****/
    if (Usr_GetParOtherUsrCodEncryptedAndGetUsrData ())
-      if (Usr_CheckIfICanViewUsrAgenda (&Gbl.Usrs.Other.UsrDat))
+      if (Agd_CheckIfICanViewUsrAgenda (&Gbl.Usrs.Other.UsrDat) == Usr_I_CAN)
 	{
 	 Error = false;
 
@@ -695,8 +718,7 @@ static void Agd_PutIconToCreateNewEvent (void *Agenda)
 
 static void Agd_PutIconToViewEditMyFullAgenda (void *EncryptedUsrCod)
   {
-   Ico_PutContextualIconToEdit (ActSeeMyAgd,NULL,
+   Ico_PutContextualIconToEdit (ActSeeMyAgd,NULL,NULL,EncryptedUsrCod);
-                                NULL,EncryptedUsrCod);
   }
 
 static void Agd_PutIconToShowQR (void)
@@ -714,19 +736,19 @@ static void Agd_PutIconToShowQR (void)
 static void Agd_PutIconsOtherPublicAgenda (void *EncryptedUsrCod)
   {
    /***** Button to view user's public profile *****/
-   if (Pri_ShowingIsAllowed (Gbl.Usrs.Other.UsrDat.BaPrfVisibility,
+   if (Pri_CheckIfICanView (Gbl.Usrs.Other.UsrDat.BaPrfVisibility,
-		             &Gbl.Usrs.Other.UsrDat))
+		            &Gbl.Usrs.Other.UsrDat) == Usr_I_CAN)
       Lay_PutContextualLinkOnlyIcon (ActSeeOthPubPrf,NULL,
                                      Usr_PutParOtherUsrCodEncrypted,EncryptedUsrCod,
 			             "user.svg",Ico_BLACK);
 
    /***** Button to view user's record card *****/
-   if (Usr_CheckIfICanViewRecordStd (&Gbl.Usrs.Other.UsrDat))
+   if (Usr_CheckIfICanViewRecordStd (&Gbl.Usrs.Other.UsrDat) == Usr_I_CAN)
       /* View student's records: common record card and course record card */
       Lay_PutContextualLinkOnlyIcon (ActSeeRecOneStd,NULL,
                                      Usr_PutParOtherUsrCodEncrypted,EncryptedUsrCod,
 			             "address-card.svg",Ico_BLACK);
-   else if (Usr_CheckIfICanViewRecordTch (&Gbl.Usrs.Other.UsrDat))
+   else if (Usr_CheckIfICanViewRecordTch (&Gbl.Usrs.Other.UsrDat) == Usr_I_CAN)
       Lay_PutContextualLinkOnlyIcon (ActSeeRecOneTch,NULL,
 			             Usr_PutParOtherUsrCodEncrypted,EncryptedUsrCod,
 			             "address-card.svg",Ico_BLACK);

swad_agenda.h

@@ -101,6 +101,8 @@ typedef enum
 /***************************** Public prototypes *****************************/
 /*****************************************************************************/
 
+Usr_ICan_t Agd_CheckIfICanViewUsrAgenda (struct Usr_Data *UsrDat);
+
 void Agd_PutFormLogInToShowUsrAgenda (void);
 void Agd_PutParAgd (void);
 

swad_alert.c

@@ -34,6 +34,7 @@
 
 #include "swad_action_list.h"
 #include "swad_alert.h"
+#include "swad_box.h"
 #include "swad_error.h"
 #include "swad_form.h"
 #include "swad_global.h"
@@ -398,15 +399,15 @@ static void Ale_ShowFixAlertAndButtonBegin (Ale_AlertType_t AlertType,const char
   {
    extern const char *Txt_Close;
    char IdAlert[Frm_MAX_BYTES_ID + 1];
-   static const bool AlertClosable[Ale_NUM_ALERT_TYPES] =
+   static Box_Closable_t AlertClosable[Ale_NUM_ALERT_TYPES] =
      {
-      [Ale_NONE     ] = false,
+      [Ale_NONE     ] = Box_NOT_CLOSABLE,
-      [Ale_CLIPBOARD] = true,
+      [Ale_CLIPBOARD] = Box_CLOSABLE,
-      [Ale_INFO     ] = true,
+      [Ale_INFO     ] = Box_CLOSABLE,
-      [Ale_SUCCESS  ] = true,
+      [Ale_SUCCESS  ] = Box_CLOSABLE,
-      [Ale_QUESTION ] = true,
+      [Ale_QUESTION ] = Box_CLOSABLE,
-      [Ale_WARNING  ] = true,
+      [Ale_WARNING  ] = Box_CLOSABLE,
-      [Ale_ERROR    ] = true,
+      [Ale_ERROR    ] = Box_CLOSABLE,
     };
    static const char *Ale_AlertIcons[Ale_NUM_ALERT_TYPES] =
      {
@@ -424,38 +425,49 @@ static void Ale_ShowFixAlertAndButtonBegin (Ale_AlertType_t AlertType,const char
       Lay_WriteStartOfPage ();
 
    /***** Begin container *****/
-   if (AlertClosable[AlertType])
+   switch (AlertClosable[AlertType])
      {
-      /* Create unique id for alert */
+      case Box_NOT_CLOSABLE:
-      Frm_SetUniqueId (IdAlert);
+         HTM_DIV_Begin ("class=\"CM\"");
-      HTM_DIV_Begin ("id=\"%s\" class=\"CM\"",IdAlert);
+	 break;
+      case Box_CLOSABLE:
+	 /* Create unique id for alert */
+	 Frm_SetUniqueId (IdAlert);
+	 HTM_DIV_Begin ("id=\"%s\" class=\"CM\"",IdAlert);
+	 break;
      }
-   else
-      HTM_DIV_Begin ("class=\"CM\"");
 
    /***** Begin box *****/
    HTM_DIV_Begin ("class=\"ALERT ALERT_BG_%s\"",The_GetSuffix ());
 
       /***** Icon to close the alert *****/
-      if (AlertClosable[AlertType])
+      switch (AlertClosable[AlertType])
 	{
-	 HTM_DIV_Begin ("class=\"ALERT_CLOSE\"");
+	 case Box_NOT_CLOSABLE:
-	    HTM_A_Begin ("href=\"\" onclick=\"toggleDisplay('%s');return false;\" /",
+	    break;
-			 IdAlert);
+	 case Box_CLOSABLE:
-	       Ico_PutIcon ("times.svg",Ico_BLACK,Txt_Close,"ICO16x16");
+	    HTM_DIV_Begin ("class=\"ALERT_CLOSE\"");
-	    HTM_A_End ();
+	       HTM_A_Begin ("href=\"\" onclick=\"toggleDisplay('%s');return false;\" /",
-	 HTM_DIV_End ();
+			    IdAlert);
+		  Ico_PutIcon ("times.svg",Ico_BLACK,Txt_Close,"ICO16x16");
+	       HTM_A_End ();
+	    HTM_DIV_End ();
+	    break;
 	}
 
       /***** Write message *****/
-      if (AlertType == Ale_NONE)
+      switch (AlertType)
-	 HTM_DIV_Begin ("class=\"ALERT_TXT ALERT_TXT_%s\"",
+        {
-	                The_GetSuffix ());
+         case Ale_NONE:
-      else
+	    HTM_DIV_Begin ("class=\"ALERT_TXT ALERT_TXT_%s\"",The_GetSuffix ());
-	 HTM_DIV_Begin ("class=\"ALERT_TXT ALERT_TXT_%s\""
+	    break;
-		        " style=\"background-image:url('%s/%s');\"",
+         default:
-	                The_GetSuffix (),
+	    HTM_DIV_Begin ("class=\"ALERT_TXT ALERT_TXT_%s\""
-			Cfg_URL_ICON_PUBLIC,Ale_AlertIcons[AlertType]);
+			   " style=\"background-image:url('%s/%s');\"",
+			   The_GetSuffix (),
+			   Cfg_URL_ICON_PUBLIC,Ale_AlertIcons[AlertType]);
+	    break;
+        }
       HTM_Txt (Txt);
       HTM_DIV_End ();
   }

swad_assignment.c

@@ -56,6 +56,16 @@
 #include "swad_setting.h"
 #include "swad_string.h"
 
+/*****************************************************************************/
+/******************************* Private types *******************************/
+/*****************************************************************************/
+
+typedef enum
+  {
+   Asg_ONE_ASSIGMENT,
+   Asg_MULTIPLE_ASSIGMENTS
+  } Asg_OneOrMultiple_t;
+
 /*****************************************************************************/
 /************** External global variables from others modules ****************/
 /*****************************************************************************/
@@ -67,14 +77,15 @@ extern struct Globals Gbl;
 /*****************************************************************************/
 
 static void Asg_PutHead (struct Asg_Assignments *Assignments,
-                         bool OnlyOneAssignment,Vie_ViewType_t ViewType);
+                         Asg_OneOrMultiple_t OneOrMultiple,
-static bool Asg_CheckIfICanCreateAssignments (void);
+                         Vie_ViewType_t ViewType);
+static Usr_ICan_t Asg_CheckIfICanCreateAssignments (void);
 static void Asg_PutIconsListAssignments (void *Assignments);
 static void Asg_PutIconToCreateNewAsg (void *Assignments);
 static void Asg_ParsWhichGroupsToShow (void *Assignments);
 static void Asg_PutIconsOneAsg (void *Assignments);
 static void Asg_ShowAssignmentRow (struct Asg_Assignments *Assignments,
-                                   bool OnlyOneAssignment,
+                                   Asg_OneOrMultiple_t OneOrMultiple,
                                    Vie_ViewType_t ViewType);
 static void Asg_WriteAsgAuthor (struct Asg_Assignment *Asg);
 static void Asg_WriteAssignmentFolder (struct Asg_Assignment *Asg,
@@ -176,9 +187,7 @@ void Asg_ShowAllAssignments (struct Asg_Assignments *Assignments)
 	 HTM_TABLE_Begin ("TBL_SCROLL");
 
 	    /***** Table head *****/
-	    Asg_PutHead (Assignments,
+	    Asg_PutHead (Assignments,Asg_MULTIPLE_ASSIGMENTS,Vie_VIEW);
-	                 false,		// Not only this assignment in table
-	                 Vie_VIEW);	// Not print view
 
 	    /***** Write all assignments *****/
 	    for (NumAsg  = Pagination.FirstItemVisible, The_ResetRowColor ();
@@ -187,9 +196,7 @@ void Asg_ShowAllAssignments (struct Asg_Assignments *Assignments)
 	      {
 	       Assignments->Asg.AsgCod = Assignments->LstAsgCods[NumAsg - 1];
 	       Asg_GetAssignmentDataByCod (&Assignments->Asg);
-	       Asg_ShowAssignmentRow (Assignments,
+	       Asg_ShowAssignmentRow (Assignments,Asg_MULTIPLE_ASSIGMENTS,Vie_VIEW);
-	                              false,		// Not only this assignment in table
-				      Vie_VIEW);	// Not print view
 	      }
 
 	 /***** End table *****/
@@ -214,7 +221,8 @@ void Asg_ShowAllAssignments (struct Asg_Assignments *Assignments)
 /*****************************************************************************/
 
 static void Asg_PutHead (struct Asg_Assignments *Assignments,
-                         bool OnlyOneAssignment,Vie_ViewType_t ViewType)
+                         Asg_OneOrMultiple_t OneOrMultiple,
+                         Vie_ViewType_t ViewType)
   {
    extern const char *Txt_START_END_TIME_HELP[Dat_NUM_START_END_TIME];
    extern const char *Txt_START_END_TIME[Dat_NUM_START_END_TIME];
@@ -225,7 +233,7 @@ static void Asg_PutHead (struct Asg_Assignments *Assignments,
 
    HTM_TR_Begin (NULL);
 
-      if (!OnlyOneAssignment)
+      if (OneOrMultiple == Asg_MULTIPLE_ASSIGMENTS)
          HTM_TH_Span (NULL,HTM_HEAD_CENTER,1,1,"CONTEXT_COL");	// Column for contextual icons
 
       for (Order  = (Dat_StartEndTime_t) 0;
@@ -279,10 +287,11 @@ static void Asg_PutHead (struct Asg_Assignments *Assignments,
 /******************** Check if I can create assignments **********************/
 /*****************************************************************************/
 
-static bool Asg_CheckIfICanCreateAssignments (void)
+static Usr_ICan_t Asg_CheckIfICanCreateAssignments (void)
   {
-   return Gbl.Usrs.Me.Role.Logged == Rol_TCH ||
+   return (Gbl.Usrs.Me.Role.Logged == Rol_TCH ||
-          Gbl.Usrs.Me.Role.Logged == Rol_SYS_ADM;
+           Gbl.Usrs.Me.Role.Logged == Rol_SYS_ADM) ? Usr_I_CAN :
+        					     Usr_I_CAN_NOT;
   }
 
 /*****************************************************************************/
@@ -294,11 +303,11 @@ static void Asg_PutIconsListAssignments (void *Assignments)
    /***** Put icon to create a new assignment *****/
    if (Assignments)
      {
-      if (Asg_CheckIfICanCreateAssignments ())
+      if (Asg_CheckIfICanCreateAssignments () == Usr_I_CAN)
 	 Asg_PutIconToCreateNewAsg (Assignments);
 
       /***** Link to get resource link *****/
-      if (Rsc_CheckIfICanGetLink ())
+      if (Rsc_CheckIfICanGetLink () == Usr_I_CAN)
 	{
          ((struct Asg_Assignments *) Assignments)->Asg.AsgCod = -1L;
 	 Ico_PutContextualIconToGetLink (ActReqLnkAsg,NULL,
@@ -393,14 +402,10 @@ void Asg_PrintOneAssignment (void)
    HTM_TABLE_BeginWideMarginPadding (2);
 
       /***** Table head *****/
-      Asg_PutHead (&Assignments,
+      Asg_PutHead (&Assignments,Asg_ONE_ASSIGMENT,Vie_PRINT);
-	           true,	// Only this assignment in table
-		   Vie_PRINT);	// Print view
 
       /***** Write assignment *****/
-      Asg_ShowAssignmentRow (&Assignments,
+      Asg_ShowAssignmentRow (&Assignments,Asg_ONE_ASSIGMENT,Vie_PRINT);
-                             true,		// Only this assignment in table
-			     Vie_PRINT);	// Print view
 
    /***** End table *****/
    HTM_TABLE_End ();
@@ -425,14 +430,10 @@ void Asg_ShowOneAssignmentInBox (struct Asg_Assignments *Assignments)
       HTM_TABLE_Begin ("TBL_SCROLL");
 
 	 /***** Table head *****/
-	 Asg_PutHead (Assignments,
+	 Asg_PutHead (Assignments,Asg_ONE_ASSIGMENT,Vie_VIEW);
-		      true,	// Only this assignment in table
-		      Vie_VIEW);		// Not print view
 
 	 /***** Write assignment *****/
-	 Asg_ShowAssignmentRow (Assignments,
+	 Asg_ShowAssignmentRow (Assignments,Asg_ONE_ASSIGMENT,Vie_VIEW);
-				true,		// Only this assignment in table
-				Vie_VIEW);	// Not print view
 
       /***** End table *****/
       HTM_TABLE_End ();
@@ -467,7 +468,7 @@ static void Asg_PutIconsOneAsg (void *Assignments)
 /*****************************************************************************/
 
 static void Asg_ShowAssignmentRow (struct Asg_Assignments *Assignments,
-                                   bool OnlyOneAssignment,
+                                   Asg_OneOrMultiple_t OneOrMultiple,
                                    Vie_ViewType_t ViewType)
   {
    extern const char *Txt_Actions[ActLst_NUM_ACTIONS];
@@ -488,7 +489,7 @@ static void Asg_ShowAssignmentRow (struct Asg_Assignments *Assignments,
    HTM_TR_Begin (NULL);
 
       /* Forms to remove/edit this assignment */
-      if (!OnlyOneAssignment)
+      if (OneOrMultiple == Asg_MULTIPLE_ASSIGMENTS)
 	{
 	 HTM_TD_Begin ("rowspan=\"2\" class=\"CONTEXT_COL %s\"",
 	               The_GetColorRows ());
@@ -768,7 +769,7 @@ static void Asg_PutIconsToRemEditOneAsg (struct Asg_Assignments *Assignments,
 	                              Asg_PutPars,Assignments);
 
 	 /***** Link to get resource link *****/
-	 if (Rsc_CheckIfICanGetLink ())
+	 if (Rsc_CheckIfICanGetLink () == Usr_I_CAN)
 	    Ico_PutContextualIconToGetLink (ActReqLnkAsg,NULL,
 					    Asg_PutPars,Assignments);
 	 /* falls through */
@@ -1640,7 +1641,7 @@ static bool Asg_CheckIfIBelongToCrsOrGrpsThisAssignment (long AsgCod)
       case Rol_TCH:
 	 // Students and teachers can do assignments depending on groups
 	 /***** Get if I can do an assignment from database *****/
-	 return Asg_DB_CheckIfICanDoAssignment (AsgCod);
+	 return (Asg_DB_CheckIfICanDoAssignment (AsgCod) == Usr_I_CAN);
       case Rol_SYS_ADM:
          return true;
       default:
@@ -1703,31 +1704,32 @@ void Asg_WriteDatesAssignment (const struct Asg_Assignment *Asg)
 /* Check if I have permission to create a file or folder into an assignment **/
 /*****************************************************************************/
 
-bool Asg_CheckIfICanCreateIntoAssigment (const struct Asg_Assignment *Asg)
+Usr_ICan_t Asg_CheckIfICanCreateIntoAssigment (const struct Asg_Assignment *Asg)
   {
    /***** Trivial check 1: assignment is valid *****/
    if (Asg->AsgCod <= 0)
-      return false;
+      return Usr_I_CAN_NOT;
 
    /***** Check 2: Do not create anything in hidden assigments *****/
    if (Asg->HiddenOrVisible == HidVis_HIDDEN)
-      return false;
+      return Usr_I_CAN_NOT;
 
    /***** Check 3: If I do not belong to course / groups of this assignment,
 		   I can not create anything inside this assignment *****/
    if (!Asg->IBelongToCrsOrGrps)
-      return false;
+      return Usr_I_CAN_NOT;
 
    /***** Check 4: Depending on my role in this course... *****/
    switch (Gbl.Usrs.Me.UsrDat.Roles.InCurrentCrs)
      {
-      case Rol_STD:		// Students...
+      case Rol_STD:			// Students...
-      case Rol_NET:		// ...and non-editing teachers...
+      case Rol_NET:			// ...and non-editing teachers...
-	 return Asg->Open;	// ...can create inside open assignments
+	 return Asg->Open ? Usr_I_CAN :	// ...can create inside open assignments
-      case Rol_TCH:		// Teachers...
+			    Usr_I_CAN_NOT;
-	 return true;		// ...can create inside open or closed assignments
+      case Rol_TCH:			// Teachers...
+	 return Usr_I_CAN;		// ...can create inside open or closed assignments
       default:
-	 return false;
+	 return Usr_I_CAN_NOT;
      }
   }
 

swad_assignment.h

@@ -106,7 +106,7 @@ void Asg_ReceiveAssignment (void);
 void Asg_RemoveCrsAssignments (long CrsCod);
 
 void Asg_WriteDatesAssignment (const struct Asg_Assignment *Asg);
-bool Asg_CheckIfICanCreateIntoAssigment (const struct Asg_Assignment *Asg);
+Usr_ICan_t Asg_CheckIfICanCreateIntoAssigment (const struct Asg_Assignment *Asg);
 void Asg_SetFolder (struct Asg_Assignment *Asg,unsigned Level);
 
 unsigned Asg_GetNumAssignments (Hie_Level_t Level,unsigned *NumNotif);

swad_assignment_database.c

@@ -331,7 +331,7 @@ void Asg_DB_RemoveAssignment (long AsgCod)
 /********************* Check if I can do an assignment ***********************/
 /*****************************************************************************/
 
-bool Asg_DB_CheckIfICanDoAssignment (long AsgCod)
+Usr_ICan_t Asg_DB_CheckIfICanDoAssignment (long AsgCod)
   {
    // Students and teachers can do assignments depending on groups
    return
@@ -355,7 +355,8 @@ bool Asg_DB_CheckIfICanDoAssignment (long AsgCod)
 				" AND asg_groups.GrpCod=grp_users.GrpCod)"
 			   "))",
 		   AsgCod,
-		   Gbl.Usrs.Me.UsrDat.UsrCod);
+		   Gbl.Usrs.Me.UsrDat.UsrCod) ? Usr_I_CAN :
+						Usr_I_CAN_NOT;
   }
 
 /*****************************************************************************/

swad_assignment_database.h

@@ -59,7 +59,7 @@ void Asg_DB_HideOrUnhideAssignment (long AsgCod,
 
 void Asg_DB_RemoveAssignment (long AsgCod);
 
-bool Asg_DB_CheckIfICanDoAssignment (long AsgCod);
+Usr_ICan_t Asg_DB_CheckIfICanDoAssignment (long AsgCod);
 
 unsigned Asg_DB_GetGrps (MYSQL_RES **mysql_res,long AsgCod);
 void Asg_DB_CreateGroup (long AsgCod,long GrpCod);

swad_attendance.c

@@ -371,7 +371,7 @@ static void Att_PutIconsInListOfEvents (void *Events)
 			       Usr_PutParMyUsrCodEncrypted,Gbl.Usrs.Me.UsrDat.EnUsrCod);
 
       /***** Put icon to get resource link *****/
-      if (Rsc_CheckIfICanGetLink ())
+      if (Rsc_CheckIfICanGetLink () == Usr_I_CAN)
 	 Ico_PutContextualIconToGetLink (ActReqLnkAtt,NULL,
 					 Att_PutPars,Events);
      }
@@ -579,7 +579,7 @@ static void Att_PutFormsToRemEditOneEvent (struct Att_Events *Events,
       [HidVis_VISIBLE] = ActHidAtt,	// Visible ==> action to hide
      };
 
-   if (Att_CheckIfICanEditEvents ())
+   if (Att_CheckIfICanEditEvents () == Usr_I_CAN)
      {
       /***** Icon to remove attendance event *****/
       Ico_PutContextualIconToRemove (ActReqRemAtt,NULL,
@@ -591,27 +591,24 @@ static void Att_PutFormsToRemEditOneEvent (struct Att_Events *Events,
 					 Events->Event.HiddenOrVisible);
 
       /***** Icon to edit attendance event *****/
-      Ico_PutContextualIconToEdit (ActEdiOneAtt,NULL,
+      Ico_PutContextualIconToEdit (ActEdiOneAtt,NULL,Att_PutPars,Events);
-				   Att_PutPars,Events);
      }
 
    /***** Icon to get resource link *****/
-   if (Rsc_CheckIfICanGetLink ())
+   if (Rsc_CheckIfICanGetLink () == Usr_I_CAN)
-      Ico_PutContextualIconToGetLink (ActReqLnkAtt,NULL,
+      Ico_PutContextualIconToGetLink (ActReqLnkAtt,NULL,Att_PutPars,Events);
-                                      Att_PutPars,Events);
   }
 
-
 /*****************************************************************************/
 /******************* Check if I can edit calls for exams *********************/
 /*****************************************************************************/
 
-bool Att_CheckIfICanEditEvents (void)
+Usr_ICan_t Att_CheckIfICanEditEvents (void)
   {
-   static const bool ICanEditAttEvents[Rol_NUM_ROLES] =
+   static Usr_ICan_t ICanEditAttEvents[Rol_NUM_ROLES] =
      {
-      [Rol_TCH    ] = true,
+      [Rol_TCH    ] = Usr_I_CAN,
-      [Rol_SYS_ADM] = true,
+      [Rol_SYS_ADM] = Usr_I_CAN,
      };
 
    return ICanEditAttEvents[Gbl.Usrs.Me.Role.Logged];
@@ -2181,7 +2178,7 @@ static void Att_ReqListOrPrintUsrsAttendanceCrs (__attribute__((unused)) void *A
 				     Txt_Attendance_list,
 				     Hlp_USERS_Attendance_attendance_list,
 				     Txt_View_attendance,
-				     false);	// Do not put form with date range
+				     Frm_DONT_PUT_FORM);	// Do not put form with date range
 
    /***** Free list of attendance events *****/
    Att_FreeListEvents (&Events);
@@ -2722,8 +2719,7 @@ static void Att_ListEventsToSelect (struct Att_Events *Events,
 
 static void Att_PutIconToViewAttEvents (__attribute__((unused)) void *Args)
   {
-   Ico_PutContextualIconToView (ActSeeAllAtt,NULL,
+   Ico_PutContextualIconToView (ActSeeAllAtt,NULL,NULL,NULL);
-				NULL,NULL);
   }
 
 /*****************************************************************************/
@@ -2732,8 +2728,7 @@ static void Att_PutIconToViewAttEvents (__attribute__((unused)) void *Args)
 
 static void Att_PutIconToEditAttEvents (__attribute__((unused)) void *Args)
   {
-   Ico_PutContextualIconToEdit (ActSeeAllAtt,NULL,
+   Ico_PutContextualIconToEdit (ActSeeAllAtt,NULL,NULL,NULL);
-				NULL,NULL);
   }
 
 /*****************************************************************************/
@@ -2775,7 +2770,7 @@ static void Att_ListUsrsAttendanceTable (struct Att_Events *Events,
 	    if (Usr_ChkUsrCodAndGetAllUsrDataFromUsrCod (&UsrDat,		// Get from the database the data of the student
 							 Usr_DONT_GET_PREFS,
 							 Usr_DONT_GET_ROLE_IN_CRS))
-	       if (Usr_CheckIfICanViewAtt (&UsrDat))
+	       if (Usr_CheckIfICanViewAtt (&UsrDat) == Usr_I_CAN)
 		 {
 		  UsrDat.Accepted = Enr_CheckIfUsrHasAcceptedInCurrentCrs (&UsrDat);
 		  Att_WriteRowUsrSeveralAttEvents (Events,NumUsr,&UsrDat);
@@ -3010,7 +3005,7 @@ static void Att_ListStdsWithAttEventsDetails (struct Att_Events *Events,
 	       if (Usr_ChkUsrCodAndGetAllUsrDataFromUsrCod (&UsrDat,	// Get from the database the data of the student
 							    Usr_DONT_GET_PREFS,
 							    Usr_DONT_GET_ROLE_IN_CRS))
-		  if (Usr_CheckIfICanViewAtt (&UsrDat))
+		  if (Usr_CheckIfICanViewAtt (&UsrDat) == Usr_I_CAN)
 		    {
 		     UsrDat.Accepted = Enr_CheckIfUsrHasAcceptedInCurrentCrs (&UsrDat);
 		     Att_ListAttEventsForAStd (Events,NumUsr,&UsrDat);

swad_attendance.h

@@ -85,7 +85,7 @@ struct Att_Events
 
 void Att_SeeEvents (void);
 
-bool Att_CheckIfICanEditEvents (void);
+Usr_ICan_t Att_CheckIfICanEditEvents (void);
 
 void Att_ReqCreatOrEditEvent (void);
 bool Att_GetEventDataByCod (struct Att_Event *Event);

swad_banner.c

@@ -205,8 +205,7 @@ static void Ban_PutIconsListingBanners (__attribute__((unused)) void *Args)
 
 static void Ban_PutIconToEditBanners (void)
   {
-   Ico_PutContextualIconToEdit (ActEdiBan,NULL,
+   Ico_PutContextualIconToEdit (ActEdiBan,NULL,NULL,NULL);
-                                NULL,NULL);
   }
 
 /*****************************************************************************/
@@ -357,8 +356,7 @@ static void Ban_GetBannerDataFromRow (MYSQL_RES *mysql_res,
 static void Ban_PutIconsEditingBanners (__attribute__((unused)) void *Args)
   {
    /***** Put icon to view banners *****/
-   Ico_PutContextualIconToView (ActSeeBan,NULL,
+   Ico_PutContextualIconToView (ActSeeBan,NULL,NULL,NULL);
-				NULL,NULL);
 
    /***** Put icon to view links *****/
    Lnk_PutIconToViewLinks ();
@@ -370,9 +368,7 @@ static void Ban_PutIconsEditingBanners (__attribute__((unused)) void *Args)
 
 void Ban_PutIconToViewBanners (void)
   {
-   Lay_PutContextualLinkOnlyIcon (ActSeeBan,NULL,
+   Lay_PutContextualLinkOnlyIcon (ActSeeBan,NULL,NULL,NULL,"flag.svg",Ico_BLACK);
-                                  NULL,NULL,
-                                  "flag.svg",Ico_BLACK);
   }
 
 /*****************************************************************************/
@@ -447,7 +443,7 @@ static void Ban_ListBannersForEdition (struct Ban_Banners *Banners)
 	    Nam_ExistingShortAndFullNames (ActionRename,
 				           ParCod_Ban,Banners->BanCodToEdit,
 				           Names,
-				           true);	// Put form
+				           Frm_PUT_FORM);
 
 	    /* Banner image */
 	    HTM_TD_Begin ("class=\"LM\"");

swad_browser.c

@@ -1097,7 +1097,7 @@ static Act_Action_t Brw_ActZIPFolder[Brw_NUM_TYPES_FILE_BROWSER] =
 /***************************** Private variables *****************************/
 /*****************************************************************************/
 
-bool Brw_ICanEditFileOrFolder;	// Can I modify (remove, rename, create inside, etc.) a file or folder?
+Usr_ICan_t Brw_ICanEditFileOrFolder;	// Can I modify (remove, rename, create inside, etc.) a file or folder?
 
 /*****************************************************************************/
 /**************************** Private prototypes *****************************/
@@ -1213,7 +1213,7 @@ static bool Brw_CheckIfUploadIsAllowed (const char *FileType);
 static void Brw_PutIconToGetLinkToFile (void *FileMetadata);
 static void Brw_PutParsToGetLinkToFile (void *FileMetadata);
 
-static bool Brw_CheckIfICanEditFileMetadata (bool IAmTheOwner);
+static Usr_ICan_t Brw_CheckIfICanEditFileMetadata (bool IAmTheOwner);
 static bool Brw_CheckIfIAmOwnerOfFile (long PublisherUsrCod);
 static void Brw_WriteBigLinkToDownloadFile (const char *URL,
                                             struct Brw_FileMetadata *FileMetadata,
@@ -1233,15 +1233,15 @@ static unsigned Brw_GetFileViewsFromMe (long FilCod);
 static void Brw_RemoveOneFileOrFolderFromDB (const char Path[PATH_MAX + 1]);
 static void Brw_RemoveChildrenOfFolderFromDB (const char Path[PATH_MAX + 1]);
 
-static void Brw_SetIfICanEditFileOrFolder (bool Value);
+static void Brw_SetIfICanEditFileOrFolder (Usr_ICan_t Value);
-static bool Brw_GetIfICanEditFileOrFolder (void);
+static Usr_ICan_t Brw_GetIfICanEditFileOrFolder (void);
-static bool Brw_CheckIfICanEditFileOrFolder (unsigned Level);
+static Usr_ICan_t Brw_CheckIfICanEditFileOrFolder (unsigned Level);
 
-static bool Brw_CheckIfICanCreateIntoFolder (unsigned Level);
+static Usr_ICan_t Brw_CheckIfICanCreateIntoFolder (unsigned Level);
-static bool Brw_CheckIfICanModifySharedFileOrFolder (void);
+static Usr_ICan_t Brw_CheckIfICanModifySharedFileOrFolder (void);
-static bool Brw_CheckIfICanModifyPrivateFileOrFolder (void);
+static Usr_ICan_t Brw_CheckIfICanModifyPrivateFileOrFolder (void);
-static bool Brw_CheckIfICanModifyPrjDocFileOrFolder (void);
+static Usr_ICan_t Brw_CheckIfICanModifyPrjDocFileOrFolder (void);
-static bool Brw_CheckIfICanModifyPrjAssFileOrFolder (void);
+static Usr_ICan_t Brw_CheckIfICanModifyPrjAssFileOrFolder (void);
 
 static void Brw_WriteRowDocData (unsigned *NumDocsNotHidden,MYSQL_ROW row);
 
@@ -2711,7 +2711,7 @@ static void Brw_AskEditWorksCrsInternal (__attribute__((unused)) void *Args)
 				     Txt_Assignments_and_other_works,
 				     Hlp_FILES_Homework_for_teachers,
 				     Txt_View_homework,
-				     false);	// Do not put form with date range
+				     Frm_DONT_PUT_FORM);	// Do not put form with date range
   }
 
 /*****************************************************************************/
@@ -2744,7 +2744,7 @@ void Brw_ShowFileBrowserProject (long PrjCod)
 
       Brw_WriteTopBeforeShowingFileBrowser ();
 
-      if (Prj_CheckIfICanViewProjectDocuments (PrjCod))
+      if (Prj_CheckIfICanViewProjectDocuments (PrjCod) == Usr_I_CAN)
 	{
 	 /***** Show the tree with the project documents *****/
 	 Gbl.FileBrowser.Type = Brw_ADMI_DOC_PRJ;
@@ -2752,7 +2752,7 @@ void Brw_ShowFileBrowserProject (long PrjCod)
 	 Brw_ShowFileBrowser ();
 	}
 
-      if (Prj_CheckIfICanViewProjectAssessment (PrjCod))
+      if (Prj_CheckIfICanViewProjectAssessment (PrjCod) == Usr_I_CAN)
 	{
 	 /***** Show the tree with the project assessment *****/
 	 Gbl.FileBrowser.Type = Brw_ADMI_ASS_PRJ;
@@ -2798,7 +2798,7 @@ static void Brw_ShowFileBrowsersAsgWrkCrs (void)
 	 if (Usr_ChkUsrCodAndGetAllUsrDataFromUsrCod (&Gbl.Usrs.Other.UsrDat,
 						      Usr_DONT_GET_PREFS,
 						      Usr_GET_ROLE_IN_CRS))
-	    if (Usr_CheckIfICanViewAsgWrk (&Gbl.Usrs.Other.UsrDat))
+	    if (Usr_CheckIfICanViewAsgWrk (&Gbl.Usrs.Other.UsrDat) == Usr_I_CAN)
 	      {
 	       Gbl.Usrs.Other.UsrDat.Accepted =
 	       Enr_CheckIfUsrHasAcceptedInCurrentCrs (&Gbl.Usrs.Other.UsrDat);
@@ -3333,7 +3333,7 @@ static void Brw_PutIconsFileBrowser (__attribute__((unused)) void *Args)
 
    /***** Put icon to get resource link *****/
    if (Brw_ActReqLnk[Gbl.FileBrowser.Type] != ActUnk &&
-       Rsc_CheckIfICanGetLink ())
+       Rsc_CheckIfICanGetLink () == Usr_I_CAN)
       Ico_PutContextualIconToGetLink (Brw_ActReqLnk[Gbl.FileBrowser.Type],NULL,
 				      NULL,NULL);
 
@@ -3997,7 +3997,7 @@ static bool Brw_WriteRowFileBrowser (unsigned Level,const char *RowId,
      }
 
    /****** If current action allows file administration... ******/
-   Brw_SetIfICanEditFileOrFolder (false);
+   Brw_SetIfICanEditFileOrFolder (Usr_I_CAN_NOT);
    if (Brw_CheckIfFileBrowserIsEditable (Gbl.FileBrowser.Type) &&
        !Gbl.FileBrowser.ShowOnlyPublicFiles)
      {
@@ -4155,7 +4155,7 @@ static bool Brw_CheckIfCanPasteIn (unsigned Level)
       return false;
 
    /**** If I can not create elements into this folder... *****/
-   if (!Brw_CheckIfICanCreateIntoFolder (Level))
+   if (Brw_CheckIfICanCreateIntoFolder (Level) == Usr_I_CAN_NOT)
       return false;	// Pasting into top level of assignments is forbidden
 
    /**** If we are in the same tree of the clipboard... *****/
@@ -4182,7 +4182,7 @@ static void Brw_PutIconRemove (void)
   {
    HTM_TD_Begin ("class=\"BM %s\"",The_GetColorRows ());
 
-      if (Brw_GetIfICanEditFileOrFolder ())	// Can I remove this?
+      if (Brw_GetIfICanEditFileOrFolder () == Usr_I_CAN)	// Can I remove this?
 	 switch (Gbl.FileBrowser.FilFolLnk.Type)
 	   {
 	    case Brw_IS_FILE:
@@ -4459,13 +4459,11 @@ static void Brw_PutIconFolder (unsigned Level,
                                const char *FileBrowserId,const char *RowId,
                                Brw_IconTree_t IconSubtree)
   {
-   bool ICanCreate;
-
    /***** Begin cell *****/
    HTM_TD_Begin ("class=\"BM %s\"",The_GetColorRows ());
 
       /***** Put icon to create a new file or folder *****/
-      if ((ICanCreate = Brw_CheckIfICanCreateIntoFolder (Level)))	// I can create a new file or folder
+      if (Brw_CheckIfICanCreateIntoFolder (Level) == Usr_I_CAN)	// I can create a new file or folder
 	{
 	 if (IconSubtree == Brw_ICON_TREE_EXPAND)
 	   {
@@ -4721,7 +4719,7 @@ static void Brw_WriteFileName (unsigned Level,bool IsPublic,
 
 	       HTM_NBSP ();
 
-	       if (Brw_GetIfICanEditFileOrFolder ())	// Can I rename this folder?
+	       if (Brw_GetIfICanEditFileOrFolder () == Usr_I_CAN)	// Can I rename this folder?
 		 {
 	          /***** Form to rename folder *****/
 		  Frm_BeginForm (Brw_ActRenameFolder[Gbl.FileBrowser.Type]);
@@ -4935,7 +4933,7 @@ void Brw_AskRemFileFromTree (void)
    Brw_GetParAndInitFileBrowser ();
 
    /***** Button of confirmation of removing *****/
-   if (Brw_CheckIfICanEditFileOrFolder (Gbl.FileBrowser.Level))	// Can I remove this file?
+   if (Brw_CheckIfICanEditFileOrFolder (Gbl.FileBrowser.Level) == Usr_I_CAN)	// Can I remove this file?
      {
       /***** Show question and button to remove file/link *****/
       Brw_GetFileNameToShowDependingOnLevel (Gbl.FileBrowser.Type,
@@ -4970,7 +4968,7 @@ void Brw_RemFileFromTree (void)
    /***** Get parameters related to file browser *****/
    Brw_GetParAndInitFileBrowser ();
 
-   if (Brw_CheckIfICanEditFileOrFolder (Gbl.FileBrowser.Level))	// Can I remove this file?
+   if (Brw_CheckIfICanEditFileOrFolder (Gbl.FileBrowser.Level) == Usr_I_CAN)	// Can I remove this file?
      {
       snprintf (Path,sizeof (Path),"%s/%s",
 	        Gbl.FileBrowser.Path.AboveRootFolder,
@@ -5023,7 +5021,7 @@ void Brw_RemFolderFromTree (void)
    /***** Get parameters related to file browser *****/
    Brw_GetParAndInitFileBrowser ();
 
-   if (Brw_CheckIfICanEditFileOrFolder (Gbl.FileBrowser.Level))	// Can I remove this folder?
+   if (Brw_CheckIfICanEditFileOrFolder (Gbl.FileBrowser.Level) == Usr_I_CAN)	// Can I remove this folder?
      {
       snprintf (Path,sizeof (Path),"%s/%s",
 	        Gbl.FileBrowser.Path.AboveRootFolder,
@@ -5089,7 +5087,7 @@ void Brw_RemSubtreeInFileBrowser (void)
    /***** Get parameters related to file browser *****/
    Brw_GetParAndInitFileBrowser ();
 
-   if (Brw_CheckIfICanEditFileOrFolder (Gbl.FileBrowser.Level))	// Can I remove this subtree?
+   if (Brw_CheckIfICanEditFileOrFolder (Gbl.FileBrowser.Level) == Usr_I_CAN)	// Can I remove this subtree?
      {
       snprintf (Path,sizeof (Path),"%s/%s",
 	        Gbl.FileBrowser.Path.AboveRootFolder,
@@ -6191,7 +6189,7 @@ void Brw_ShowFormFileBrowser (void)
    Brw_GetParAndInitFileBrowser ();
 
    /***** Check if creating a new folder or file is allowed *****/
-   if (Brw_CheckIfICanCreateIntoFolder (Gbl.FileBrowser.Level))
+   if (Brw_CheckIfICanCreateIntoFolder (Gbl.FileBrowser.Level) == Usr_I_CAN)
      {
       /***** Name of the folder to be shown ****/
       Brw_GetFileNameToShowDependingOnLevel (Gbl.FileBrowser.Type,
@@ -6487,7 +6485,7 @@ void Brw_RecFolderFileBrowser (void)
    Brw_GetParAndInitFileBrowser ();
 
    /***** Check if creating a new folder is allowed *****/
-   if (Brw_CheckIfICanCreateIntoFolder (Gbl.FileBrowser.Level))
+   if (Brw_CheckIfICanCreateIntoFolder (Gbl.FileBrowser.Level) == Usr_I_CAN)
      {
       if (Str_ConvertFilFolLnkNameToValid (Gbl.FileBrowser.NewFilFolLnkName))
         {
@@ -6587,7 +6585,7 @@ void Brw_RenFolderFileBrowser (void)
    /***** Get parameters related to file browser *****/
    Brw_GetParAndInitFileBrowser ();
 
-   if (Brw_CheckIfICanEditFileOrFolder (Gbl.FileBrowser.Level))	// Can I rename this folder?
+   if (Brw_CheckIfICanEditFileOrFolder (Gbl.FileBrowser.Level) == Usr_I_CAN)	// Can I rename this folder?
      {
       if (Str_ConvertFilFolLnkNameToValid (Gbl.FileBrowser.NewFilFolLnkName))
         {
@@ -6758,7 +6756,7 @@ static bool Brw_RcvFileInFileBrw (struct BrwSiz_BrowserSize *Size,
    Brw_GetParAndInitFileBrowser ();
 
    /***** Check if creating a new file is allowed *****/
-   if (Brw_CheckIfICanCreateIntoFolder (Gbl.FileBrowser.Level))
+   if (Brw_CheckIfICanCreateIntoFolder (Gbl.FileBrowser.Level) == Usr_I_CAN)
      {
       /***** First, we save in disk the file received *****/
       Par = Fil_StartReceptionOfFile (Fil_NAME_OF_PARAM_FILENAME_ORG,
@@ -6938,7 +6936,7 @@ void Brw_RecLinkFileBrowser (void)
    Brw_GetParAndInitFileBrowser ();
 
    /***** Check if creating a new link is allowed *****/
-   if (Brw_CheckIfICanCreateIntoFolder (Gbl.FileBrowser.Level))
+   if (Brw_CheckIfICanCreateIntoFolder (Gbl.FileBrowser.Level) == Usr_I_CAN)
      {
       /***** Create a new file to store URL ****/
       Par_GetParText ("NewLinkURL",URL,PATH_MAX);
@@ -7259,9 +7257,9 @@ void Brw_ShowFileMetadata (void)
    char URL[PATH_MAX + 1];
    char FileSizeStr[Fil_MAX_BYTES_FILE_SIZE_STRING + 1];
    bool Found;
-   bool ICanView = false;
+   Usr_ICan_t ICanView = Usr_I_CAN_NOT;
    bool IAmTheOwner;
-   bool ICanEdit;
+   Usr_ICan_t ICanEdit;
    bool ICanChangePublic = false;
    bool FileHasPublisher;
    Brw_License_t License;
@@ -7285,32 +7283,36 @@ void Brw_ShowFileMetadata (void)
 
       /***** Check if I can view this file.
 	     It could be marked as hidden or in a hidden folder *****/
-      ICanView = true;
+      ICanView = Usr_I_CAN;
       switch (Gbl.FileBrowser.Type)
 	{
 	 case Brw_SHOW_DOC_INS:
 	    if (Gbl.Usrs.Me.Role.Logged < Rol_INS_ADM)
-	       ICanView = !Brw_DB_CheckIfFileOrFolderIsSetAsHiddenUsingMetadata (&FileMetadata);
+	       ICanView = Brw_DB_CheckIfFileOrFolderIsSetAsHiddenUsingMetadata (&FileMetadata) ? Usr_I_CAN_NOT :
+												 Usr_I_CAN;
             break;
 	 case Brw_SHOW_DOC_CTR:
 	    if (Gbl.Usrs.Me.Role.Logged < Rol_CTR_ADM)
-	       ICanView = !Brw_DB_CheckIfFileOrFolderIsSetAsHiddenUsingMetadata (&FileMetadata);
+	       ICanView = Brw_DB_CheckIfFileOrFolderIsSetAsHiddenUsingMetadata (&FileMetadata) ? Usr_I_CAN_NOT :
+												 Usr_I_CAN;
             break;
 	 case Brw_SHOW_DOC_DEG:
 	    if (Gbl.Usrs.Me.Role.Logged < Rol_DEG_ADM)
-	       ICanView = !Brw_DB_CheckIfFileOrFolderIsSetAsHiddenUsingMetadata (&FileMetadata);
+	       ICanView = Brw_DB_CheckIfFileOrFolderIsSetAsHiddenUsingMetadata (&FileMetadata) ? Usr_I_CAN_NOT :
+												 Usr_I_CAN;
             break;
 	 case Brw_SHOW_DOC_CRS:
 	 case Brw_SHOW_DOC_GRP:
 	    if (Gbl.Usrs.Me.Role.Logged < Rol_TCH)
-               ICanView = !Brw_DB_CheckIfFileOrFolderIsSetAsHiddenUsingMetadata (&FileMetadata);
+               ICanView = Brw_DB_CheckIfFileOrFolderIsSetAsHiddenUsingMetadata (&FileMetadata) ? Usr_I_CAN_NOT :
+												 Usr_I_CAN;
 	    break;
 	 default:
 	    break;
 	}
      }
 
-   if (ICanView)
+   if (ICanView == Usr_I_CAN)
      {
       if (FileMetadata.FilFolLnk.Type == Brw_IS_FILE ||
 	  FileMetadata.FilFolLnk.Type == Brw_IS_LINK)
@@ -7354,7 +7356,7 @@ void Brw_ShowFileMetadata (void)
 	 if (Brw_ActReqLnk[Gbl.FileBrowser.Type] != ActUnk &&
 	     (FileMetadata.FilFolLnk.Type == Brw_IS_FILE ||	// Only files or links
 	      FileMetadata.FilFolLnk.Type == Brw_IS_LINK) &&
-	     Rsc_CheckIfICanGetLink ())
+	     Rsc_CheckIfICanGetLink () == Usr_I_CAN)
 	    Box_BoxShadowBegin (NULL,Brw_PutIconToGetLinkToFile,&FileMetadata,
 				NULL);
 	 else
@@ -7363,7 +7365,7 @@ void Brw_ShowFileMetadata (void)
 
 
 	 /***** Begin form to update the metadata of a file *****/
-	 if (ICanEdit)	// I can edit file properties
+	 if (ICanEdit == Usr_I_CAN)	// I can edit file properties
 	   {
 	    /* Can the file be public? */
 	    switch (Gbl.FileBrowser.Type)
@@ -7507,14 +7509,14 @@ void Brw_ShowFileMetadata (void)
 	    HTM_TR_Begin (NULL);
 
 	       /* Label */
-	       Frm_LabelColumn ("RT",ICanEdit ? "License" :
+	       Frm_LabelColumn ("RT",ICanEdit == Usr_I_CAN ? "License" :
-						NULL,
+							     NULL,
 				Txt_License);
 
 	       /* Data */
 	       HTM_TD_Begin ("class=\"LT DAT_STRONG_%s\"",
 			     The_GetSuffix ());
-		  if (ICanEdit)	// I can edit file properties
+		  if (ICanEdit == Usr_I_CAN)	// I can edit file properties
 		    {
 		     HTM_SELECT_Begin (HTM_DONT_SUBMIT_ON_CHANGE,NULL,
 				       "id=\"License\" name=\"License\" class=\"LICENSE\"");
@@ -7584,7 +7586,7 @@ void Brw_ShowFileMetadata (void)
          HTM_TABLE_End ();
 
 	 /***** End form *****/
-	 if (ICanEdit)	// I can edit file properties
+	 if (ICanEdit == Usr_I_CAN)	// I can edit file properties
 	   {
 	       Btn_PutButton (Btn_CONFIRM_BUTTON,Txt_Save_file_properties);
 	    Frm_EndForm ();
@@ -7628,7 +7630,7 @@ void Brw_ShowFileMetadata (void)
       /***** Add paths until file to table of expanded folders *****/
       Brw_InsFoldersInPathAndUpdOtherFoldersInExpandedFolders (Gbl.FileBrowser.FilFolLnk.Path);
      }
-   else	// !ICanView
+   else	// ICanView == Usr_I_CAN_NOT
      {
       /***** Mark possible notifications about non visible file as removed *****/
       switch (Gbl.FileBrowser.Type)
@@ -7741,7 +7743,7 @@ void Brw_DownloadFile (void)
    struct Brw_FileMetadata FileMetadata;
    char URL[PATH_MAX + 1];
    bool Found;
-   bool ICanView = false;
+   Usr_ICan_t ICanView = Usr_I_CAN_NOT;
 
    /***** Get parameters related to file browser *****/
    Brw_GetParAndInitFileBrowser ();
@@ -7760,32 +7762,36 @@ void Brw_DownloadFile (void)
 
       /***** Check if I can view this file.
 	     It could be marked as hidden or in a hidden folder *****/
-      ICanView = true;
+      ICanView = Usr_I_CAN;
       switch (Gbl.FileBrowser.Type)
 	{
 	 case Brw_SHOW_DOC_INS:
 	    if (Gbl.Usrs.Me.Role.Logged < Rol_INS_ADM)
-	       ICanView = !Brw_DB_CheckIfFileOrFolderIsSetAsHiddenUsingMetadata (&FileMetadata);
+	       ICanView = Brw_DB_CheckIfFileOrFolderIsSetAsHiddenUsingMetadata (&FileMetadata) ? Usr_I_CAN_NOT :
+												 Usr_I_CAN;
             break;
 	 case Brw_SHOW_DOC_CTR:
 	    if (Gbl.Usrs.Me.Role.Logged < Rol_CTR_ADM)
-	       ICanView = !Brw_DB_CheckIfFileOrFolderIsSetAsHiddenUsingMetadata (&FileMetadata);
+	       ICanView = Brw_DB_CheckIfFileOrFolderIsSetAsHiddenUsingMetadata (&FileMetadata) ? Usr_I_CAN_NOT :
+												 Usr_I_CAN;
             break;
 	 case Brw_SHOW_DOC_DEG:
 	    if (Gbl.Usrs.Me.Role.Logged < Rol_DEG_ADM)
-	       ICanView = !Brw_DB_CheckIfFileOrFolderIsSetAsHiddenUsingMetadata (&FileMetadata);
+	       ICanView = Brw_DB_CheckIfFileOrFolderIsSetAsHiddenUsingMetadata (&FileMetadata) ? Usr_I_CAN_NOT :
+												 Usr_I_CAN;
             break;
 	 case Brw_SHOW_DOC_CRS:
 	 case Brw_SHOW_DOC_GRP:
 	    if (Gbl.Usrs.Me.Role.Logged < Rol_TCH)
-               ICanView = !Brw_DB_CheckIfFileOrFolderIsSetAsHiddenUsingMetadata (&FileMetadata);
+               ICanView = Brw_DB_CheckIfFileOrFolderIsSetAsHiddenUsingMetadata (&FileMetadata) ? Usr_I_CAN_NOT :
+												 Usr_I_CAN;
 	    break;
 	 default:
 	    break;
 	}
      }
 
-   if (ICanView)
+   if (ICanView == Usr_I_CAN)
      {
       if (FileMetadata.FilFolLnk.Type == Brw_IS_FILE ||
 	  FileMetadata.FilFolLnk.Type == Brw_IS_LINK)
@@ -7845,7 +7851,7 @@ void Brw_DownloadFile (void)
       Gbl.Layout.DivsEndWritten   =
       Gbl.Layout.HTMLEndWritten   = true;	// Don't write HTML at all
      }
-   else	// !ICanView
+   else	// ICanView == Usr_I_CAN_NOT
      {
       /***** Mark possible notifications about non visible file as removed *****/
       switch (Gbl.FileBrowser.Type)
@@ -7889,7 +7895,7 @@ void Brw_DownloadFile (void)
 /*********** Check if I have permission to change file metadata **************/
 /*****************************************************************************/
 
-static bool Brw_CheckIfICanEditFileMetadata (bool IAmTheOwner)
+static Usr_ICan_t Brw_CheckIfICanEditFileMetadata (bool IAmTheOwner)
   {
    switch (Gbl.Action.Act)	// Only in actions where edition is allowed
      {
@@ -7918,9 +7924,10 @@ static bool Brw_CheckIfICanEditFileMetadata (bool IAmTheOwner)
       case ActReqDatWrkUsr:		case ActChgDatWrkUsr:
 
       case ActReqDatBrf:		case ActChgDatBrf:
-	 return IAmTheOwner;
+	 return IAmTheOwner ? Usr_I_CAN :
+			      Usr_I_CAN_NOT;
       default:
-         return false;
+         return Usr_I_CAN_NOT;
      }
   }
 
@@ -8089,7 +8096,7 @@ void Brw_ChgFileMetadata (void)
      {
       /***** Check if I can change file metadata *****/
       IAmTheOwner = Brw_CheckIfIAmOwnerOfFile (FileMetadata.PublisherUsrCod);
-      if (!Brw_CheckIfICanEditFileMetadata (IAmTheOwner))
+      if (Brw_CheckIfICanEditFileMetadata (IAmTheOwner) == Usr_I_CAN_NOT)
 	 Err_NoPermissionExit ();
 
       /***** Check if the file was public before the edition *****/
@@ -8658,37 +8665,40 @@ static void Brw_RemoveChildrenOfFolderFromDB (const char Path[PATH_MAX + 1])
 /********** Check if I have permission to modify a file or folder ************/
 /*****************************************************************************/
 
-static void Brw_SetIfICanEditFileOrFolder (bool Value)
+static void Brw_SetIfICanEditFileOrFolder (Usr_ICan_t Value)
   {
    Brw_ICanEditFileOrFolder = Value;
   }
 
-static bool Brw_GetIfICanEditFileOrFolder (void)
+static Usr_ICan_t Brw_GetIfICanEditFileOrFolder (void)
   {
    return Brw_ICanEditFileOrFolder;
   }
 
-static bool Brw_CheckIfICanEditFileOrFolder (unsigned Level)
+static Usr_ICan_t Brw_CheckIfICanEditFileOrFolder (unsigned Level)
   {
    /***** Level 0 (root folder) can not be removed/renamed *****/
    if (Level == 0)
-      return false;
+      return Usr_I_CAN_NOT;
 
    /***** I must be student or a superior role to edit *****/
    if (Gbl.Usrs.Me.Role.Max < Rol_STD)
-      return false;
+      return Usr_I_CAN_NOT;
 
    /***** Set depending on browser, level, logged role... *****/
    switch (Gbl.FileBrowser.Type)
      {
       case Brw_ADMI_DOC_CRS:
-         return Gbl.Usrs.Me.Role.Logged >= Rol_TCH;
+         return (Gbl.Usrs.Me.Role.Logged >= Rol_TCH) ? Usr_I_CAN :
+						       Usr_I_CAN_NOT;
       case Brw_ADMI_DOC_GRP:
 	 if (Gbl.Usrs.Me.Role.Logged == Rol_TCH)	// A teacher...
 							// ...can edit only if he/she belongs to group
-	    return Grp_GetIfIBelongToGrp (Gbl.Crs.Grps.GrpCod);
+	    return Grp_GetIfIBelongToGrp (Gbl.Crs.Grps.GrpCod) ? Usr_I_CAN :
+								 Usr_I_CAN_NOT;
 	 // An administrator can edit
-         return (Gbl.Usrs.Me.Role.Logged > Rol_TCH);
+         return (Gbl.Usrs.Me.Role.Logged > Rol_TCH) ? Usr_I_CAN :
+						      Usr_I_CAN_NOT;
       case Brw_ADMI_TCH_CRS:
       case Brw_ADMI_TCH_GRP:
          // Check if I am the publisher of the file/folder
@@ -8701,7 +8711,7 @@ static bool Brw_CheckIfICanEditFileOrFolder (unsigned Level)
       case Brw_ADMI_ASG_CRS:
 	 if (Gbl.FileBrowser.FilFolLnk.Type == Brw_IS_FOLDER && // The main folder of an assignment
              Level == 1)
-	    return false;			// Do not remove / rename main folder of assigment
+	    return Usr_I_CAN_NOT;	// Do not remove / rename main folder of assigment
 
 	 return Asg_CheckIfICanCreateIntoAssigment (&Gbl.FileBrowser.Asg);
       case Brw_ADMI_DOC_PRJ:
@@ -8709,7 +8719,8 @@ static bool Brw_CheckIfICanEditFileOrFolder (unsigned Level)
       case Brw_ADMI_ASS_PRJ:
          return Brw_CheckIfICanModifyPrjAssFileOrFolder ();
       default:
-         return Brw_CheckIfFileBrowserIsEditable (Gbl.FileBrowser.Type);
+         return Brw_CheckIfFileBrowserIsEditable (Gbl.FileBrowser.Type) ? Usr_I_CAN :
+									  Usr_I_CAN_NOT;
      }
    return false;
   }
@@ -8718,59 +8729,68 @@ static bool Brw_CheckIfICanEditFileOrFolder (unsigned Level)
 /**** Check if I have permission to create a file or folder into a folder ****/
 /*****************************************************************************/
 
-static bool Brw_CheckIfICanCreateIntoFolder (unsigned Level)
+static Usr_ICan_t Brw_CheckIfICanCreateIntoFolder (unsigned Level)
   {
    /***** If not in a folder... *****/
    if (Gbl.FileBrowser.FilFolLnk.Type != Brw_IS_FOLDER)
-      return false;
+      return Usr_I_CAN_NOT;
 
    /***** I must be student, teacher, admin or superuser to edit *****/
    if (Gbl.Usrs.Me.Role.Max < Rol_STD)
-      return false;
+      return Usr_I_CAN_NOT;
 
    /***** If maximum level is reached, I can not create/paste *****/
    if (Level >= BrwSiz_MAX_DIR_LEVELS)
-      return false;
+      return Usr_I_CAN_NOT;
 
    /***** Have I permission to create/paste a new file or folder into the folder? *****/
    switch (Gbl.FileBrowser.Type)
      {
       case Brw_ADMI_DOC_CRS:
-         return Gbl.Usrs.Me.Role.Logged >= Rol_TCH;
+         return (Gbl.Usrs.Me.Role.Logged >= Rol_TCH) ? Usr_I_CAN :
+						       Usr_I_CAN_NOT;
       case Brw_ADMI_DOC_GRP:
 	 if (Gbl.Usrs.Me.Role.Logged == Rol_TCH)		// A teacher
 							// ...can create/paste only if he/she belongs to group
-	    return Grp_GetIfIBelongToGrp (Gbl.Crs.Grps.GrpCod);
+	    return Grp_GetIfIBelongToGrp (Gbl.Crs.Grps.GrpCod) ? Usr_I_CAN :
+								 Usr_I_CAN_NOT;
 	 // An administrator can create/paste
-         return (Gbl.Usrs.Me.Role.Logged > Rol_TCH);
+         return (Gbl.Usrs.Me.Role.Logged > Rol_TCH) ? Usr_I_CAN :
+						      Usr_I_CAN_NOT;
       case Brw_ADMI_TCH_CRS:
-         return Gbl.Usrs.Me.Role.Logged >= Rol_NET;
+         return (Gbl.Usrs.Me.Role.Logged >= Rol_NET) ? Usr_I_CAN :
+						       Usr_I_CAN_NOT;
       case Brw_ADMI_TCH_GRP:
 	 if (Gbl.Usrs.Me.Role.Logged == Rol_NET ||	// A non-editing teacher...
 	     Gbl.Usrs.Me.Role.Logged == Rol_TCH)		// ...or a teacher
 							// ...can create/paste only if he/she belongs to group
-	    return Grp_GetIfIBelongToGrp (Gbl.Crs.Grps.GrpCod);
+	    return Grp_GetIfIBelongToGrp (Gbl.Crs.Grps.GrpCod) ? Usr_I_CAN :
+								 Usr_I_CAN_NOT;
 	 // An administrator can create/paste
-         return (Gbl.Usrs.Me.Role.Logged > Rol_TCH);
+         return (Gbl.Usrs.Me.Role.Logged > Rol_TCH) ? Usr_I_CAN :
+						      Usr_I_CAN_NOT;
       case Brw_ADMI_SHR_CRS:
-         return Gbl.Usrs.Me.Role.Logged >= Rol_STD;
+         return (Gbl.Usrs.Me.Role.Logged >= Rol_STD) ? Usr_I_CAN :
+						       Usr_I_CAN_NOT;
       case Brw_ADMI_SHR_GRP:
 	 if (Gbl.Usrs.Me.Role.Logged >= Rol_STD &&	// A student, non-editing teacher...
 	     Gbl.Usrs.Me.Role.Logged <= Rol_TCH)		// ...or a teacher
 							// ...can create/paste only if he/she belongs to group
-	    return Grp_GetIfIBelongToGrp (Gbl.Crs.Grps.GrpCod);
+	    return Grp_GetIfIBelongToGrp (Gbl.Crs.Grps.GrpCod) ? Usr_I_CAN :
+								 Usr_I_CAN_NOT;
 	 // An administrator can create/paste
-         return Gbl.Usrs.Me.Role.Logged >= Rol_STD;
+         return (Gbl.Usrs.Me.Role.Logged >= Rol_STD) ? Usr_I_CAN :
+						       Usr_I_CAN_NOT;
       case Brw_ADMI_ASG_USR:
       case Brw_ADMI_ASG_CRS:
-	 if (Level == 0)	// If root folder
+	 if (Level == 0)		// If root folder
-	    return false;	// Folders of assigments (level 1)
+	    return Usr_I_CAN_NOT;	// Folders of assigments (level 1)
-				// can only be created automatically
+					// can only be created automatically
 	 return Asg_CheckIfICanCreateIntoAssigment (&Gbl.FileBrowser.Asg);
       default:
-         return Brw_CheckIfFileBrowserIsEditable (Gbl.FileBrowser.Type);
+         return Brw_CheckIfFileBrowserIsEditable (Gbl.FileBrowser.Type) ? Usr_I_CAN :
+									  Usr_I_CAN_NOT;
      }
-   return false;
   }
 
 /*****************************************************************************/
@@ -8779,7 +8799,7 @@ static bool Brw_CheckIfICanCreateIntoFolder (unsigned Level)
 
 bool Brw_CheckIfFileBrowserIsEditable (Brw_FileBrowser_t FileBrowser)
   {
-   static const bool Brw_FileBrowserIsEditable[Brw_NUM_TYPES_FILE_BROWSER] =
+   static bool Brw_FileBrowserIsEditable[Brw_NUM_TYPES_FILE_BROWSER] =
      {
       [Brw_UNKNOWN     ] = false,
       [Brw_SHOW_DOC_CRS] = false,
@@ -8823,42 +8843,42 @@ bool Brw_CheckIfFileBrowserIsEditable (Brw_FileBrowser_t FileBrowser)
 // I can remove or rename a file if I am the publisher
 // I can remove or rename a folder if I am the unique publisher of all files and folders in the subtree starting there
 
-static bool Brw_CheckIfICanModifySharedFileOrFolder (void)
+static Usr_ICan_t Brw_CheckIfICanModifySharedFileOrFolder (void)
   {
    switch (Gbl.Usrs.Me.Role.Logged)
      {
       case Rol_STD:	// If I am a student or a non-editing teacher...
       case Rol_NET:	// ...I can modify the file/folder if I am the publisher
-         return (Gbl.Usrs.Me.UsrDat.UsrCod == Brw_DB_GetPublisherOfSubtree (Gbl.FileBrowser.FilFolLnk.Full));	// Am I the publisher of subtree?
+         return (Gbl.Usrs.Me.UsrDat.UsrCod == Brw_DB_GetPublisherOfSubtree (Gbl.FileBrowser.FilFolLnk.Full) ? Usr_I_CAN :
+													      Usr_I_CAN_NOT);	// Am I the publisher of subtree?
       case Rol_TCH:
       case Rol_DEG_ADM:
       case Rol_CTR_ADM:
       case Rol_INS_ADM:
       case Rol_SYS_ADM:
-         return true;
+         return Usr_I_CAN;
       default:
-         return false;
+         return Usr_I_CAN_NOT;
      }
-   return false;
   }
 
-static bool Brw_CheckIfICanModifyPrivateFileOrFolder (void)
+static Usr_ICan_t Brw_CheckIfICanModifyPrivateFileOrFolder (void)
   {
    switch (Gbl.Usrs.Me.Role.Logged)
      {
       case Rol_NET:	// If I am a student or a non-editing teacher...
 			// ...I can modify the file/folder if I am the publisher
-         return (Gbl.Usrs.Me.UsrDat.UsrCod == Brw_DB_GetPublisherOfSubtree (Gbl.FileBrowser.FilFolLnk.Full));	// Am I the publisher of subtree?
+         return (Gbl.Usrs.Me.UsrDat.UsrCod == Brw_DB_GetPublisherOfSubtree (Gbl.FileBrowser.FilFolLnk.Full) ? Usr_I_CAN :
+													      Usr_I_CAN_NOT);	// Am I the publisher of subtree?
       case Rol_TCH:
       case Rol_DEG_ADM:
       case Rol_CTR_ADM:
       case Rol_INS_ADM:
       case Rol_SYS_ADM:
-         return true;
+         return Usr_I_CAN;
       default:
-         return false;
+         return Usr_I_CAN_NOT;
      }
-   return false;
   }
 
 /*****************************************************************************/
@@ -8869,22 +8889,22 @@ static bool Brw_CheckIfICanModifyPrivateFileOrFolder (void)
 // I can remove or rename a file if I am the publisher
 // I can remove or rename a folder if I am the unique publisher of all files and folders in the subtree starting there
 
-static bool Brw_CheckIfICanModifyPrjDocFileOrFolder (void)
+static Usr_ICan_t Brw_CheckIfICanModifyPrjDocFileOrFolder (void)
   {
    switch (Gbl.Usrs.Me.Role.Logged)
      {
       case Rol_STD:
       case Rol_NET:
 	 if (Prj_GetMyRolesInProject (Prj_GetPrjCod ()))	// I am a member
-            return (Gbl.Usrs.Me.UsrDat.UsrCod == Brw_DB_GetPublisherOfSubtree (Gbl.FileBrowser.FilFolLnk.Full));	// Am I the publisher of subtree?
+            return (Gbl.Usrs.Me.UsrDat.UsrCod == Brw_DB_GetPublisherOfSubtree (Gbl.FileBrowser.FilFolLnk.Full) ? Usr_I_CAN :
-	 return false;
+        													 Usr_I_CAN_NOT);	// Am I the publisher of subtree?
+	 return Usr_I_CAN_NOT;
       case Rol_TCH:	// Editing teachers in a course can access to all files
       case Rol_SYS_ADM:
-         return true;
+         return Usr_I_CAN;
       default:
-         return false;
+         return Usr_I_CAN_NOT;
      }
-   return false;
   }
 
 /*****************************************************************************/
@@ -8895,7 +8915,7 @@ static bool Brw_CheckIfICanModifyPrjDocFileOrFolder (void)
 // I can remove or rename a file if I am the publisher
 // I can remove or rename a folder if I am the unique publisher of all files and folders in the subtree starting there
 
-static bool Brw_CheckIfICanModifyPrjAssFileOrFolder (void)
+static Usr_ICan_t Brw_CheckIfICanModifyPrjAssFileOrFolder (void)
   {
    switch (Gbl.Usrs.Me.Role.Logged)
      {
@@ -8903,15 +8923,15 @@ static bool Brw_CheckIfICanModifyPrjAssFileOrFolder (void)
       case Rol_NET:
 	 if ((Prj_GetMyRolesInProject (Prj_GetPrjCod ()) & (1 << Prj_ROLE_TUT |		// Tutor...
 	                                                    1 << Prj_ROLE_EVL)))	// ...or evaluator
-            return (Gbl.Usrs.Me.UsrDat.UsrCod == Brw_DB_GetPublisherOfSubtree (Gbl.FileBrowser.FilFolLnk.Full));	// Am I the publisher of subtree?
+            return (Gbl.Usrs.Me.UsrDat.UsrCod == Brw_DB_GetPublisherOfSubtree (Gbl.FileBrowser.FilFolLnk.Full) ? Usr_I_CAN :
-	 return false;
+        													 Usr_I_CAN_NOT);	// Am I the publisher of subtree?
+	 return Usr_I_CAN_NOT;
       case Rol_TCH:	// Editing teachers in a course can access to all files
       case Rol_SYS_ADM:
-         return true;
+         return Usr_I_CAN;
       default:
-         return false;
+         return Usr_I_CAN_NOT;
      }
-   return false;
   }
 
 /*****************************************************************************/

swad_building.c

@@ -60,7 +60,7 @@ static struct Bld_Building *Bld_EditingBuilding = NULL;	// Static variable to ke
 /*****************************************************************************/
 
 static Bld_Order_t Bld_GetParBuildingOrder (void);
-static bool Bld_CheckIfICanCreateBuildings (void);
+static Usr_ICan_t Bld_CheckIfICanCreateBuildings (void);
 static void Bld_PutIconsListingBuildings (__attribute__((unused)) void *Args);
 static void Bld_PutIconToEditBuildings (void);
 static void Bld_PutIconsEditingBuildings (__attribute__((unused)) void *Args);
@@ -196,9 +196,10 @@ static Bld_Order_t Bld_GetParBuildingOrder (void)
 /********************* Check if I can create buildings ***********************/
 /*****************************************************************************/
 
-static bool Bld_CheckIfICanCreateBuildings (void)
+static Usr_ICan_t Bld_CheckIfICanCreateBuildings (void)
   {
-   return Gbl.Usrs.Me.Role.Logged >= Rol_CTR_ADM;
+   return (Gbl.Usrs.Me.Role.Logged >= Rol_CTR_ADM) ? Usr_I_CAN :
+						     Usr_I_CAN_NOT;
   }
 
 /*****************************************************************************/
@@ -208,7 +209,7 @@ static bool Bld_CheckIfICanCreateBuildings (void)
 static void Bld_PutIconsListingBuildings (__attribute__((unused)) void *Args)
   {
    /***** Put icon to edit buildings *****/
-   if (Bld_CheckIfICanCreateBuildings ())
+   if (Bld_CheckIfICanCreateBuildings () == Usr_I_CAN)
       Bld_PutIconToEditBuildings ();
   }
 
@@ -218,8 +219,7 @@ static void Bld_PutIconsListingBuildings (__attribute__((unused)) void *Args)
 
 static void Bld_PutIconToEditBuildings (void)
   {
-   Ico_PutContextualIconToEdit (ActEdiBld,NULL,
+   Ico_PutContextualIconToEdit (ActEdiBld,NULL,NULL,NULL);
-                                NULL,NULL);
   }
 
 /*****************************************************************************/
@@ -275,8 +275,7 @@ static void Bld_EditBuildingsInternal (void)
 static void Bld_PutIconsEditingBuildings (__attribute__((unused)) void *Args)
   {
    /***** Put icon to view buildings *****/
-   Ico_PutContextualIconToView (ActSeeBld,NULL,
+   Ico_PutContextualIconToView (ActSeeBld,NULL,NULL,NULL);
-				NULL,NULL);
   }
 
 /*****************************************************************************/
@@ -435,7 +434,7 @@ static void Bld_ListBuildingsForEdition (const struct Bld_Buildings *Buildings)
 	    Nam_ExistingShortAndFullNames (ActionRename,
 				           ParCod_Bld,Building->BldCod,
 				           Names,
-				           true);	// Put form
+				           Frm_PUT_FORM);
 
 	    /* Building location */
 	    HTM_TD_Begin ("class=\"LM\"");

swad_calendar.c

@@ -56,7 +56,7 @@ extern struct Globals Gbl;
 /***************************** Public constants ******************************/
 /*****************************************************************************/
 
-const bool Cal_DayIsValidAsFirstDayOfWeek[7] =
+bool Cal_DayIsValidAsFirstDayOfWeek[7] =
   {
    [0] = true,	// monday
    [1] = false,	// tuesday
@@ -332,7 +332,7 @@ void Cal_PutIconToSeeCalendar (void)
 
 void Cal_GetAndShowNumUsrsPerFirstDayOfWeek (void)
   {
-   extern const bool Cal_DayIsValidAsFirstDayOfWeek[7];
+   extern bool Cal_DayIsValidAsFirstDayOfWeek[7];
    extern const char *Hlp_ANALYTICS_Figures_calendar;
    extern const char *Txt_FIGURE_TYPES[Fig_NUM_FIGURES];
    extern const char *Txt_Calendar;

swad_call_for_exam.c

@@ -675,13 +675,12 @@ static void Cfe_ListCallsForExams (struct Cfe_CallsForExams *CallsForExams,
 static void Cfe_PutIconsCallsForExams (__attribute__((unused)) void *Args)
   {
    /***** Icon to create a new call for exam *****/
-   if (Cfe_CheckIfICanEditCallsForExams ())
+   if (Cfe_CheckIfICanEditCallsForExams () == Usr_I_CAN)
       Ico_PutContextualIconToAdd (ActEdiCfe,NULL,NULL,NULL);
 
    /***** Icon to get resource link *****/
-   if (Rsc_CheckIfICanGetLink ())
+   if (Rsc_CheckIfICanGetLink () == Usr_I_CAN)
-      Ico_PutContextualIconToGetLink (ActReqLnkCfe,NULL,
+      Ico_PutContextualIconToGetLink (ActReqLnkCfe,NULL,NULL,NULL);
-				      NULL,NULL);
   }
 
 /*****************************************************************************/
@@ -1465,7 +1464,7 @@ static void Cfe_PutIconsCallForExam (void *CallsForExams)
 
    if (CallsForExams)
      {
-      if (Cfe_CheckIfICanEditCallsForExams ())
+      if (Cfe_CheckIfICanEditCallsForExams () == Usr_I_CAN)
 	{
 	 /***** Icon to remove call for exam *****/
 	 Ico_PutContextualIconToRemove (ActReqRemCfe,NULL,
@@ -1499,7 +1498,7 @@ static void Cfe_PutIconsCallForExam (void *CallsForExams)
 				    &((struct Cfe_CallsForExams *) CallsForExams)->ExaCod);
 
       /***** Link to get resource link *****/
-      if (Rsc_CheckIfICanGetLink ())
+      if (Rsc_CheckIfICanGetLink () == Usr_I_CAN)
 	 Ico_PutContextualIconToGetLink (ActReqLnkCfe,NULL,
 					 Cfe_PutParExaCod,
 					 &((struct Cfe_CallsForExams *) CallsForExams)->ExaCod);
@@ -1510,12 +1509,12 @@ static void Cfe_PutIconsCallForExam (void *CallsForExams)
 /******************* Check if I can edit calls for exams *********************/
 /*****************************************************************************/
 
-bool Cfe_CheckIfICanEditCallsForExams (void)
+Usr_ICan_t Cfe_CheckIfICanEditCallsForExams (void)
   {
-   static const bool ICanEditCallsForExams[Rol_NUM_ROLES] =
+   static Usr_ICan_t ICanEditCallsForExams[Rol_NUM_ROLES] =
      {
-      [Rol_TCH    ] = true,
+      [Rol_TCH    ] = Usr_I_CAN,
-      [Rol_SYS_ADM] = true,
+      [Rol_SYS_ADM] = Usr_I_CAN,
      };
 
    return ICanEditCallsForExams[Gbl.Usrs.Me.Role.Logged];

swad_call_for_exam.h

@@ -129,7 +129,7 @@ void Cfe_ListCallsForExamsDay (void);
 
 void Cfe_CreateListCallsForExams (struct Cfe_CallsForExams *CallsForExams);
 
-bool Cfe_CheckIfICanEditCallsForExams (void);
+Usr_ICan_t Cfe_CheckIfICanEditCallsForExams (void);
 
 void Cfe_GetSummaryAndContentCallForExam (char SummaryStr[Ntf_MAX_BYTES_SUMMARY + 1],
                                           char **ContentStr,

swad_call_for_exam_database.c

@@ -85,7 +85,7 @@ unsigned Cfe_DB_GetCallsForExamsInCurrentCrs (MYSQL_RES **mysql_res)
    char SubQueryStatus[64];
 
    /***** Build subquery about status depending on my role *****/
-   if (Cfe_CheckIfICanEditCallsForExams ())
+   if (Cfe_CheckIfICanEditCallsForExams () == Usr_I_CAN)
       sprintf (SubQueryStatus,"Status<>%u",
 	       (unsigned) Cfe_DELETED_CALL_FOR_EXAM);
    else

swad_center.c

@@ -89,7 +89,7 @@ static void Ctr_GetCoordFromRow (MYSQL_RES *mysql_res,
 				 struct Map_Coordinates *Coord);
 
 static void Ctr_ListCentersForEdition (const struct Plc_Places *Places);
-static bool Ctr_CheckIfICanEditACenter (struct Hie_Node *Ctr);
+static Usr_ICan_t Ctr_CheckIfICanEditACenter (struct Hie_Node *Ctr);
 
 static void Ctr_ShowAlertAndButtonToGoToCtr (void);
 
@@ -289,7 +289,7 @@ static void Ctr_ListCenters (void)
 static void Ctr_PutIconsListingCenters (__attribute__((unused)) void *Args)
   {
    /***** Put icon to edit centers *****/
-   if (Hie_CheckIfICanEdit ())
+   if (Hie_CheckIfICanEdit () == Usr_I_CAN)
       Ctr_PutIconToEditCenters ();
 
    /***** Put icon to show a figure *****/
@@ -302,8 +302,7 @@ static void Ctr_PutIconsListingCenters (__attribute__((unused)) void *Args)
 
 static void Ctr_PutIconToEditCenters (void)
   {
-   Ico_PutContextualIconToEdit (ActEdiCtr,NULL,
+   Ico_PutContextualIconToEdit (ActEdiCtr,NULL,NULL,NULL);
-                                NULL,NULL);
   }
 
 /*****************************************************************************/
@@ -460,8 +459,7 @@ static void Ctr_EditCentersInternal (void)
 static void Ctr_PutIconsEditingCenters (__attribute__((unused)) void *Args)
   {
    /***** Put icon to view centers *****/
-   Ico_PutContextualIconToView (ActSeeCtr,NULL,
+   Ico_PutContextualIconToView (ActSeeCtr,NULL,NULL,NULL);
-				NULL,NULL);
 
    /***** Put icon to show a figure *****/
    Fig_PutIconToShowFigure (Fig_HIERARCHY);
@@ -737,7 +735,7 @@ static void Ctr_ListCentersForEdition (const struct Plc_Places *Places)
    const struct Plc_Place *Plc;
    char WWW[Cns_MAX_BYTES_WWW + 1];
    struct Usr_Data UsrDat;
-   bool ICanEdit;
+   Usr_ICan_t ICanEdit;
    unsigned NumDegs;
    unsigned NumUsrsCtr;
    unsigned NumUsrsInCrssOfCtr;
@@ -773,7 +771,7 @@ static void Ctr_ListCentersForEdition (const struct Plc_Places *Places)
 
 	    /* Put icon to remove center */
 	    HTM_TD_Begin ("class=\"BT\"");
-	       if (!ICanEdit ||				// I cannot edit
+	       if (ICanEdit == Usr_I_CAN_NOT ||		// I cannot edit
 		   NumDegs ||				// Center has degrees
 		   NumUsrsCtr ||			// Center has users who claim to belong to it
 		   NumUsrsInCrssOfCtr)			// Center has users
@@ -795,7 +793,7 @@ static void Ctr_ListCentersForEdition (const struct Plc_Places *Places)
 
 	    /* Place */
 	    HTM_TD_Begin ("class=\"LT DAT_%s\"",The_GetSuffix ());
-	       if (ICanEdit)
+	       if (ICanEdit == Usr_I_CAN)
 		 {
 		  Frm_BeginForm (ActChgCtrPlc);
 		     ParCod_PutPar (ParCod_OthHie,Ctr->HieCod);
@@ -836,11 +834,12 @@ static void Ctr_ListCentersForEdition (const struct Plc_Places *Places)
 	    Nam_ExistingShortAndFullNames (ActionRename,
 				           ParCod_OthHie,Ctr->HieCod,
 				           Names,
-				           ICanEdit);	// Put form?
+				           ICanEdit == Usr_I_CAN ? Frm_PUT_FORM :
+				        			   Frm_DONT_PUT_FORM);
 
 	    /* Center WWW */
 	    HTM_TD_Begin ("class=\"LT DAT_%s\"",The_GetSuffix ());
-	       if (ICanEdit)
+	       if (ICanEdit == Usr_I_CAN)
 		 {
 		  Frm_BeginForm (ActChgCtrWWW);
 		     ParCod_PutPar (ParCod_OthHie,Ctr->HieCod);
@@ -903,11 +902,12 @@ static void Ctr_ListCentersForEdition (const struct Plc_Places *Places)
 /************** Check if I can edit, remove, etc. a center *******************/
 /*****************************************************************************/
 
-static bool Ctr_CheckIfICanEditACenter (struct Hie_Node *Ctr)
+static Usr_ICan_t Ctr_CheckIfICanEditACenter (struct Hie_Node *Ctr)
   {
-   return  Gbl.Usrs.Me.Role.Logged >= Rol_INS_ADM ||		// I am an institution administrator or higher
+   return (Gbl.Usrs.Me.Role.Logged >= Rol_INS_ADM ||		// I am an institution administrator or higher
            ((Ctr->Status & Hie_STATUS_BIT_PENDING) != 0 &&	// Center is not yet activated
-           Gbl.Usrs.Me.UsrDat.UsrCod == Ctr->RequesterUsrCod);	// I am the requester
+            Gbl.Usrs.Me.UsrDat.UsrCod == Ctr->RequesterUsrCod)) ? Usr_I_CAN :	// I am the requester
+        							  Usr_I_CAN_NOT;
   }
 
 /*****************************************************************************/

swad_changelog.h

@@ -633,10 +633,12 @@ Me sale este error, no s
 "can npt create received message (duplicated entry '243218-2160773' for key 'UsrCod_MsgCod')
 */
 
-#define Log_PLATFORM_VERSION	"SWAD 23.71.3 (2024-03-22)"
+#define Log_PLATFORM_VERSION	"SWAD 23.72 (2024-04-01)"
 #define CSS_FILE		"swad23.67.2.css"
 #define JS_FILE			"swad23.53.6.js"
 /*
+	Version 23.72:    Apr 01, 2024  New type Usr_ICan_t. (334879 lines)
+	Version 23.71.4:  Mar 22, 2024  Code refactoring. (334860 lines)
 	Version 23.71.3:  Mar 22, 2024  Code refactoring. (334827 lines)
 	Version 23.71.2:  Mar 20, 2024  Code refactoring in actions. (334866 lines)
 	Version 23.71.1:  Mar 20, 2024  Some functions renamed. (334869 lines)

swad_country.c

@@ -463,7 +463,7 @@ static void Cty_ListOneCountryForSeeing (struct Hie_Node *Cty,unsigned NumCty)
 static void Cty_PutIconsListingCountries (__attribute__((unused)) void *Args)
   {
    /***** Put icon to edit countries *****/
-   if (Cty_CheckIfICanEditCountries ())
+   if (Cty_CheckIfICanEditCountries () == Usr_I_CAN)
       Cty_PutIconToEditCountries ();
 
    /***** Put icon to show a figure *****/
@@ -474,9 +474,10 @@ static void Cty_PutIconsListingCountries (__attribute__((unused)) void *Args)
 /********************** Check if I can edit countries ************************/
 /*****************************************************************************/
 
-bool Cty_CheckIfICanEditCountries (void)
+Usr_ICan_t Cty_CheckIfICanEditCountries (void)
   {
-   return Gbl.Usrs.Me.Role.Logged == Rol_SYS_ADM;
+   return (Gbl.Usrs.Me.Role.Logged == Rol_SYS_ADM) ? Usr_I_CAN :
+						     Usr_I_CAN_NOT;
   }
 
 /*****************************************************************************/
@@ -485,8 +486,7 @@ bool Cty_CheckIfICanEditCountries (void)
 
 static void Cty_PutIconToEditCountries (void)
   {
-   Ico_PutContextualIconToEdit (ActEdiCty,NULL,
+   Ico_PutContextualIconToEdit (ActEdiCty,NULL,NULL,NULL);
-                                NULL,NULL);
   }
 
 /*****************************************************************************/
@@ -692,8 +692,7 @@ static void Cty_EditCountriesInternal (void)
 static void Cty_PutIconsEditingCountries (__attribute__((unused)) void *Args)
   {
    /***** Put icon to view countries *****/
-   Ico_PutContextualIconToView (ActSeeCty,NULL,
+   Ico_PutContextualIconToView (ActSeeCty,NULL,NULL,NULL);
-				NULL,NULL);
 
    /***** Put icon to show a figure *****/
    Fig_PutIconToShowFigure (Fig_HIERARCHY);

swad_country.h

@@ -35,6 +35,7 @@
 #include "swad_institution.h"
 #include "swad_language.h"
 #include "swad_role_type.h"
+#include "swad_user.h"
 
 /*****************************************************************************/
 /************************** Public types and constants ***********************/
@@ -53,7 +54,7 @@ void Cty_ListCountries (void);
 void Cty_ListCountries1 (void);
 void Cty_ListCountries2 (void);
 
-bool Cty_CheckIfICanEditCountries (void);
+Usr_ICan_t Cty_CheckIfICanEditCountries (void);
 
 void Cty_DrawCountryMapAndNameWithLink (struct Hie_Node *Cty,Act_Action_t Action,
                                         const char *ClassContainer,

swad_country_config.c

@@ -341,7 +341,7 @@ static void CtyCfg_MapImage (Vie_ViewType_t ViewType,Hie_PutLink_t PutLink)
    HTM_DIV_End ();
 
    /***** Map attribution *****/
-   if (ViewType == Vie_VIEW && Cty_CheckIfICanEditCountries ())
+   if (ViewType == Vie_VIEW && Cty_CheckIfICanEditCountries () == Usr_I_CAN)
      {
       HTM_DIV_Begin ("class=\"CM\"");
 	 Frm_BeginForm (ActChgCtyMapAtt);

swad_course.c

@@ -100,7 +100,7 @@ static void Crs_EditCoursesInternal (void);
 static void Crs_PutIconsEditingCourses (__attribute__((unused)) void *Args);
 static void Crs_ListCoursesForEdition (void);
 static void Crs_ListCoursesOfAYearForEdition (unsigned Year);
-static bool Crs_CheckIfICanEdit (struct Hie_Node *Crs);
+static Usr_ICan_t Crs_CheckIfICanEdit (struct Hie_Node *Crs);
 static void Crs_PutFormToCreateCourse (void);
 static void Crs_PutHeadCoursesForSeeing (void);
 static void Crs_PutHeadCoursesForEdition (void);
@@ -423,7 +423,7 @@ static void Crs_ListCourses (void)
 static void Crs_PutIconsListCourses (__attribute__((unused)) void *Args)
   {
    /***** Put icon to edit courses *****/
-   if (Hie_CheckIfICanEdit ())
+   if (Hie_CheckIfICanEdit () == Usr_I_CAN)
       Crs_PutIconToEditCourses ();
 
    /***** Put icon to show a figure *****/
@@ -436,8 +436,7 @@ static void Crs_PutIconsListCourses (__attribute__((unused)) void *Args)
 
 static void Crs_PutIconToEditCourses (void)
   {
-   Ico_PutContextualIconToEdit (ActEdiCrs,NULL,
+   Ico_PutContextualIconToEdit (ActEdiCrs,NULL,NULL,NULL);
-                                NULL,NULL);
   }
 
 /*****************************************************************************/
@@ -613,8 +612,7 @@ static void Crs_EditCoursesInternal (void)
 static void Crs_PutIconsEditingCourses (__attribute__((unused)) void *Args)
   {
    /***** Put icon to view courses *****/
-   Ico_PutContextualIconToView (ActSeeCrs,NULL,
+   Ico_PutContextualIconToView (ActSeeCrs,NULL,NULL,NULL);
-				NULL,NULL);
 
    /***** Put icon to show a figure *****/
    Fig_PutIconToShowFigure (Fig_HIERARCHY);
@@ -662,7 +660,7 @@ static void Crs_ListCoursesOfAYearForEdition (unsigned Year)
    unsigned YearAux;
    unsigned NumCrs;
    struct Usr_Data UsrDat;
-   bool ICanEdit;
+   Usr_ICan_t ICanEdit;
    unsigned NumUsrs[Rol_NUM_ROLES];
    const char *Names[Nam_NUM_SHRT_FULL_NAMES];
 
@@ -693,9 +691,9 @@ static void Crs_ListCoursesOfAYearForEdition (unsigned Year)
 	    /* Put icon to remove course */
 	    HTM_TD_Begin ("class=\"BT\"");
 	       if (NumUsrs[Rol_UNK] ||	// Course has users ==> deletion forbidden
-		   !ICanEdit)
+		   ICanEdit == Usr_I_CAN_NOT)
 		  Ico_PutIconRemovalNotAllowed ();
-	       else	// Crs->NumUsrs == 0 && ICanEdit
+	       else	// Crs->NumUsrs == 0 && ICanEdit == Usr_I_CAN
 		  Ico_PutContextualIconToRemove (ActRemCrs,NULL,
 						 Hie_PutParOtherHieCod,&Crs->HieCod);
 	    HTM_TD_End ();
@@ -707,7 +705,7 @@ static void Crs_ListCoursesOfAYearForEdition (unsigned Year)
 
 	    /* Course year */
 	    HTM_TD_Begin ("class=\"CT DAT_%s\"",The_GetSuffix ());
-	    if (ICanEdit)
+	    if (ICanEdit == Usr_I_CAN)
 	      {
 	       Frm_BeginForm (ActChgCrsYea);
 		  ParCod_PutPar (ParCod_OthHie,Crs->HieCod);
@@ -734,7 +732,7 @@ static void Crs_ListCoursesOfAYearForEdition (unsigned Year)
 
 	    /* Institutional code of the course */
 	    HTM_TD_Begin ("class=\"LT DAT_%s\"",The_GetSuffix ());
-	       if (ICanEdit)
+	       if (ICanEdit == Usr_I_CAN)
 		 {
 		  Frm_BeginForm (ActChgInsCrsCod);
 		     ParCod_PutPar (ParCod_OthHie,Crs->HieCod);
@@ -754,7 +752,8 @@ static void Crs_ListCoursesOfAYearForEdition (unsigned Year)
 	    Nam_ExistingShortAndFullNames (ActionRename,
 				           ParCod_OthHie,Crs->HieCod,
 				           Names,
-				           ICanEdit);	// Put form?
+				           ICanEdit == Usr_I_CAN ? Frm_PUT_FORM :
+				        			   Frm_DONT_PUT_FORM);
 
 	    /* Current number of teachers in this course */
 	    HTM_TD_Unsigned (NumUsrs[Rol_TCH] +
@@ -790,11 +789,12 @@ static void Crs_ListCoursesOfAYearForEdition (unsigned Year)
 /************** Check if I can edit, remove, etc. a course *******************/
 /*****************************************************************************/
 
-static bool Crs_CheckIfICanEdit (struct Hie_Node *Crs)
+static Usr_ICan_t Crs_CheckIfICanEdit (struct Hie_Node *Crs)
   {
-   return Gbl.Usrs.Me.Role.Logged >= Rol_DEG_ADM ||		// I am a degree administrator or higher
+   return (Gbl.Usrs.Me.Role.Logged >= Rol_DEG_ADM ||		// I am a degree administrator or higher
-          ((Crs->Status & Hie_STATUS_BIT_PENDING) != 0 &&	// Course is not yet activated
+           ((Crs->Status & Hie_STATUS_BIT_PENDING) != 0 &&	// Course is not yet activated
-          Gbl.Usrs.Me.UsrDat.UsrCod == Crs->RequesterUsrCod);	// I am the requester
+           Gbl.Usrs.Me.UsrDat.UsrCod == Crs->RequesterUsrCod)) ? Usr_I_CAN :	// I am the requester
+        						         Usr_I_CAN_NOT;
   }
 
 /*****************************************************************************/
@@ -1052,7 +1052,7 @@ void Crs_RemoveCourse (void)
 
    /***** Get data of the course from database *****/
    Hie_GetDataByCod[Hie_CRS] (Crs_EditingCrs);
-   if (!Crs_CheckIfICanEdit (Crs_EditingCrs))
+   if (Crs_CheckIfICanEdit (Crs_EditingCrs) == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Check if this course has users *****/
@@ -1295,7 +1295,7 @@ void Crs_ChangeInsCrsCod (void)
 
    /* Get data of the course */
    Hie_GetDataByCod[Hie_CRS] (Crs_EditingCrs);
-   if (!Crs_CheckIfICanEdit (Crs_EditingCrs))
+   if (Crs_CheckIfICanEdit (Crs_EditingCrs) == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Change the institutional course code *****/
@@ -1340,7 +1340,7 @@ void Crs_ChangeCrsYear (void)
 
    /* Get data of the course */
    Hie_GetDataByCod[Hie_CRS] (Crs_EditingCrs);
-   if (!Crs_CheckIfICanEdit (Crs_EditingCrs))
+   if (Crs_CheckIfICanEdit (Crs_EditingCrs) == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    if (NewYear <= Deg_MAX_YEARS_PER_DEGREE)	// If year is valid
@@ -1445,7 +1445,7 @@ void Crs_RenameCourse (struct Hie_Node *Crs,Nam_ShrtOrFullName_t ShrtOrFull)
 
    /***** Get from the database the data of the degree *****/
    Hie_GetDataByCod[Hie_CRS] (Crs);
-   if (!Crs_CheckIfICanEdit (Crs))
+   if (Crs_CheckIfICanEdit (Crs) == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Check if new name is empty *****/

swad_degree.c

@@ -84,7 +84,7 @@ static struct Hie_Node *Deg_EditingDeg = NULL;	// Static variable to keep the de
 /*****************************************************************************/
 
 static void Deg_ListDegreesForEdition (const struct DegTyp_DegTypes *DegTypes);
-static bool Deg_CheckIfICanEditADegree (struct Hie_Node *Deg);
+static Usr_ICan_t Deg_CheckIfICanEditADegree (struct Hie_Node *Deg);
 static void Deg_PutFormToCreateDegree (const struct DegTyp_DegTypes *DegTypes);
 static void Deg_PutHeadDegreesForSeeing (void);
 static void Deg_PutHeadDegreesForEdition (void);
@@ -325,7 +325,7 @@ static void Deg_ListDegreesForEdition (const struct DegTyp_DegTypes *DegTypes)
    struct DegTyp_DegreeType *DegTyp;
    char WWW[Cns_MAX_BYTES_WWW + 1];
    struct Usr_Data UsrDat;
-   bool ICanEdit;
+   Usr_ICan_t ICanEdit;
    unsigned NumCrss;
    unsigned NumUsrsInCrssOfDeg;
    const char *Names[Nam_NUM_SHRT_FULL_NAMES];
@@ -359,7 +359,7 @@ static void Deg_ListDegreesForEdition (const struct DegTyp_DegTypes *DegTypes)
 
 	    /* Put icon to remove degree */
 	    HTM_TD_Begin ("class=\"BT\"");
-	       if (!ICanEdit ||
+	       if (ICanEdit == Usr_I_CAN_NOT ||
 		   NumCrss ||	// Degree has courses ==> deletion forbidden
 		   NumUsrsInCrssOfDeg)
 		  Ico_PutIconRemovalNotAllowed ();
@@ -384,11 +384,12 @@ static void Deg_ListDegreesForEdition (const struct DegTyp_DegTypes *DegTypes)
 	    Nam_ExistingShortAndFullNames (ActionRename,
 				           ParCod_OthHie,Deg->HieCod,
 				           Names,
-				           ICanEdit);	// Put form?
+				           ICanEdit == Usr_I_CAN ? Frm_PUT_FORM :
+				        			   Frm_DONT_PUT_FORM);
 
 	    /* Degree type */
 	    HTM_TD_Begin ("class=\"LT DAT_%s\"",The_GetSuffix ());
-	       if (ICanEdit)
+	       if (ICanEdit == Usr_I_CAN)
 		 {
 		  Frm_BeginForm (ActChgDegTyp);
 		     ParCod_PutPar (ParCod_OthHie,Deg->HieCod);
@@ -423,7 +424,7 @@ static void Deg_ListDegreesForEdition (const struct DegTyp_DegTypes *DegTypes)
 
 	    /* Degree WWW */
 	    HTM_TD_Begin ("class=\"LT DAT_%s\"",The_GetSuffix ());
-	       if (ICanEdit)
+	       if (ICanEdit == Usr_I_CAN)
 		 {
 		  Frm_BeginForm (ActChgDegWWW);
 		     ParCod_PutPar (ParCod_OthHie,Deg->HieCod);
@@ -483,11 +484,12 @@ static void Deg_ListDegreesForEdition (const struct DegTyp_DegTypes *DegTypes)
 /************** Check if I can edit, remove, etc. a degree *******************/
 /*****************************************************************************/
 
-static bool Deg_CheckIfICanEditADegree (struct Hie_Node *Deg)
+static Usr_ICan_t Deg_CheckIfICanEditADegree (struct Hie_Node *Deg)
   {
-   return Gbl.Usrs.Me.Role.Logged >= Rol_CTR_ADM ||		// I am a center administrator or higher
+   return (Gbl.Usrs.Me.Role.Logged >= Rol_CTR_ADM ||		// I am a center administrator or higher
-          ((Deg->Status & Hie_STATUS_BIT_PENDING) != 0 &&	// Degree is not yet activated
+           ((Deg->Status & Hie_STATUS_BIT_PENDING) != 0 &&	// Degree is not yet activated
-          Gbl.Usrs.Me.UsrDat.UsrCod == Deg->RequesterUsrCod);	// I am the requester
+           Gbl.Usrs.Me.UsrDat.UsrCod == Deg->RequesterUsrCod)) ? Usr_I_CAN :	// I am the requester
+        							 Usr_I_CAN_NOT;
   }
 
 /*****************************************************************************/
@@ -719,7 +721,7 @@ static void Deg_ListDegrees (void)
 static void Deg_PutIconsListingDegrees (__attribute__((unused)) void *Args)
   {
    /***** Put icon to edit degrees *****/
-   if (Hie_CheckIfICanEdit ())
+   if (Hie_CheckIfICanEdit () == Usr_I_CAN)
       Deg_PutIconToEditDegrees ();
 
    /***** Put icon to view degree types *****/
@@ -735,8 +737,7 @@ static void Deg_PutIconsListingDegrees (__attribute__((unused)) void *Args)
 
 static void Deg_PutIconToEditDegrees (void)
   {
-   Ico_PutContextualIconToEdit (ActEdiDeg,NULL,
+   Ico_PutContextualIconToEdit (ActEdiDeg,NULL,NULL,NULL);
-                                NULL,NULL);
   }
 
 /*****************************************************************************/
@@ -882,7 +883,7 @@ static void Deg_EditDegreesInternal (void)
 	 Ale_ShowAlert (Ale_WARNING,Txt_No_types_of_degree);
 
 	 /***** Form to create the first degree type *****/
-	 if (DegTyp_CheckIfICanCreateDegreeTypes ())
+	 if (DegTyp_CheckIfICanCreateDegreeTypes () == Usr_I_CAN)
 	    DegTyp_EditDegreeTypes (&DegTypes);
 	}
 
@@ -900,8 +901,7 @@ static void Deg_EditDegreesInternal (void)
 static void Deg_PutIconsEditingDegrees (__attribute__((unused)) void *Args)
   {
    /***** Put icon to view degrees *****/
-   Ico_PutContextualIconToView (ActSeeDeg,NULL,
+   Ico_PutContextualIconToView (ActSeeDeg,NULL,NULL,NULL);
-				NULL,NULL);
 
    /***** Put icon to view types of degree *****/
    DegTyp_PutIconToViewDegreeTypes ();
@@ -916,8 +916,7 @@ static void Deg_PutIconsEditingDegrees (__attribute__((unused)) void *Args)
 
 void Deg_PutIconToViewDegrees (void)
   {
-   Lay_PutContextualLinkOnlyIcon (ActSeeDeg,NULL,
+   Lay_PutContextualLinkOnlyIcon (ActSeeDeg,NULL,NULL,NULL,
-                                  NULL,NULL,
 				  "graduation-cap.svg",Ico_BLACK);
   }
 

swad_degree_type.c

@@ -287,8 +287,7 @@ static void DegTyp_EditDegreeTypesInternal (const struct DegTyp_DegTypes *DegTyp
 static void DegTyp_PutIconsEditingDegreeTypes (__attribute__((unused)) void *Args)
   {
    /***** Put icon to view degree types *****/
-   Ico_PutContextualIconToView (ActSeeDegTyp,NULL,
+   Ico_PutContextualIconToView (ActSeeDegTyp,NULL,NULL,NULL);
-				NULL,NULL);
 
    /***** Put icon to view degrees *****/
    Deg_PutIconToViewDegrees ();
@@ -303,8 +302,7 @@ static void DegTyp_PutIconsEditingDegreeTypes (__attribute__((unused)) void *Arg
 
 void DegTyp_PutIconToViewDegreeTypes (void)
   {
-   Lay_PutContextualLinkOnlyIcon (ActSeeDegTyp,NULL,
+   Lay_PutContextualLinkOnlyIcon (ActSeeDegTyp,NULL,NULL,NULL,
-                                  NULL,NULL,
 				  "sitemap.svg",Ico_BLACK);
   }
 
@@ -375,9 +373,8 @@ static void DegTyp_PutIconsListingDegTypes (__attribute__((unused)) void *Args)
 static void DegTyp_PutIconToEditDegTypes (__attribute__((unused)) void *Args)
   {
    if (Gbl.Hierarchy.Level == Hie_CTR &&	// Only editable if center tab is visible
-       DegTyp_CheckIfICanCreateDegreeTypes ())
+       DegTyp_CheckIfICanCreateDegreeTypes () == Usr_I_CAN)
-      Ico_PutContextualIconToEdit (ActEdiDegTyp,NULL,
+      Ico_PutContextualIconToEdit (ActEdiDegTyp,NULL,NULL,NULL);
-				   NULL,NULL);
   }
 
 /*****************************************************************************/
@@ -445,9 +442,10 @@ static void DegTyp_ListDegreeTypesForEdition (const struct DegTyp_DegTypes *DegT
 /******************** Check if I can create degree types *********************/
 /*****************************************************************************/
 
-bool DegTyp_CheckIfICanCreateDegreeTypes (void)
+Usr_ICan_t DegTyp_CheckIfICanCreateDegreeTypes (void)
   {
-   return (Gbl.Usrs.Me.Role.Logged == Rol_SYS_ADM);
+   return (Gbl.Usrs.Me.Role.Logged == Rol_SYS_ADM) ? Usr_I_CAN :
+						     Usr_I_CAN_NOT;
   }
 
 /*****************************************************************************/

swad_degree_type.h

@@ -73,7 +73,7 @@ void DegTyp_EditDegreeTypes (const struct DegTyp_DegTypes *DegTypes);
 
 void DegTyp_PutIconToViewDegreeTypes (void);
 
-bool DegTyp_CheckIfICanCreateDegreeTypes (void);
+Usr_ICan_t DegTyp_CheckIfICanCreateDegreeTypes (void);
 
 void DegTyp_GetListDegreeTypes (struct DegTyp_DegTypes *DegTypes,
                                 Hie_Level_t Level,DegTyp_Order_t Order);

swad_department.c

@@ -53,7 +53,7 @@
 /****************************** Private constants ****************************/
 /*****************************************************************************/
 
-static const bool Dpt_ICanEditDpts[Rol_NUM_ROLES] =
+static bool Dpt_ICanEditDpts[Rol_NUM_ROLES] =
   {
    /* Users who can edit */
    [Rol_INS_ADM] = true,
@@ -244,8 +244,7 @@ static Dpt_Order_t Dpt_GetParDptOrder (void)
 static void Dpt_PutIconToEditDpts (__attribute__((unused)) void *Args)
   {
    if (Dpt_ICanEditDpts[Gbl.Usrs.Me.Role.Logged])
-      Ico_PutContextualIconToEdit (ActEdiDpt,NULL,
+      Ico_PutContextualIconToEdit (ActEdiDpt,NULL,NULL,NULL);
-				   NULL,NULL);
   }
 
 /*****************************************************************************/
@@ -254,8 +253,7 @@ static void Dpt_PutIconToEditDpts (__attribute__((unused)) void *Args)
 
 static void Dpt_PutIconToViewDpts (__attribute__((unused)) void *Args)
   {
-   Ico_PutContextualIconToView (ActSeeDpt,NULL,
+   Ico_PutContextualIconToView (ActSeeDpt,NULL,NULL,NULL);
-				NULL,NULL);
   }
 
 /*****************************************************************************/
@@ -515,7 +513,7 @@ static void Dpt_ListDepartmentsForEdition (const struct Dpt_Departments *Departm
 	    Nam_ExistingShortAndFullNames (ActionRename,
 				           ParCod_Dpt,Dpt->DptCod,
 				           Names,
-				           true);	// Put form
+				           Frm_PUT_FORM);
 
 	    /* Department WWW */
 	    HTM_TD_Begin ("class=\"LM\"");

swad_duplicate.c

@@ -311,7 +311,7 @@ static void Dup_ListSimilarUsrs (void)
 				Usr_NUM_MAIN_FIELDS_DATA_USR-2,
 				The_GetColorRows ());
 		     /* Button to remove this user */
-		     if (Acc_CheckIfICanEliminateAccount (UsrDat.UsrCod))
+		     if (Acc_CheckIfICanEliminateAccount (UsrDat.UsrCod) == Usr_I_CAN)
 			Dup_PutButtonToEliminateUsrAccount (&UsrDat);
 		     /* Button to remove from list of possible duplicate users */
 		     if (Dup_DB_CheckIfUsrIsDup (UsrDat.UsrCod))

swad_enrolment.c

@@ -145,7 +145,7 @@ static void Enr_AskIfRegRemUsr (struct Usr_ListUsrCods *ListUsrCods,Rol_Role_t R
 
 static void Enr_ShowFormToEditOtherUsr (void);
 
-static bool Enr_CheckIfICanRemUsrFromCrs (void);
+static Usr_ICan_t Enr_CheckIfICanRemUsrFromCrs (void);
 
 static void Enr_AskIfRemoveUsrFromCrs (struct Usr_Data *UsrDat);
 static void Enr_EffectivelyRemUsrFromCrs (struct Usr_Data *UsrDat,
@@ -1428,7 +1428,7 @@ bool Enr_PutActionsRegRemOneUsr (Usr_MeOrOther_t MeOrOther)
 	}
 
       /***** Eliminate user completely from platform *****/
-      if (Acc_CheckIfICanEliminateAccount (Gbl.Usrs.Other.UsrDat.UsrCod))
+      if (Acc_CheckIfICanEliminateAccount (Gbl.Usrs.Other.UsrDat.UsrCod) == Usr_I_CAN)
 	{
 	 Enr_PutActionRemUsrAcc (&OptionChecked,MeOrOther);
 	 OptionsShown = true;
@@ -2369,16 +2369,18 @@ static void Enr_RemUsrEnrolmentRequestInCrs (long UsrCod,long CrsCod)
 
 void Enr_PutLinkToAdminOneUsr (Act_Action_t NextAction)
   {
-   extern const bool Adm_ICanAdminOtherUsrs[Rol_NUM_ROLES];
    extern const char *Txt_Administer_me;
    extern const char *Txt_Administer_one_user;
-   const char *TitleText = Adm_ICanAdminOtherUsrs[Gbl.Usrs.Me.Role.Logged] ? Txt_Administer_one_user :
+   static const char **TitleText[] =
-                        	                                             Txt_Administer_me;
+     {
+      [Usr_I_CAN_NOT] = &Txt_Administer_me,
+      [Usr_I_CAN    ] = &Txt_Administer_one_user,
+     };
 
    Lay_PutContextualLinkIconText (NextAction,NULL,
                                   NULL,NULL,
 				  "user-cog.svg",Ico_BLACK,
-				  TitleText,NULL);
+				  *TitleText[Adm_CheckIfICanAdminOtherUsrs ()],NULL);
   }
 
 /*****************************************************************************/
@@ -2421,10 +2423,8 @@ void Enr_ReqRegRemOth (void)
 
 void Enr_ReqRegRemStd (void)
   {
-   extern const bool Adm_ICanAdminOtherUsrs[Rol_NUM_ROLES];
-
    /***** Contextual menu *****/
-   if (Adm_ICanAdminOtherUsrs[Gbl.Usrs.Me.Role.Logged])
+   if (Adm_CheckIfICanAdminOtherUsrs () == Usr_I_CAN)
      {
       Mnu_ContextMenuBegin ();
 	 Enr_PutLinkToAdminSeveralUsrs (Rol_STD);	// Admin several students
@@ -2443,9 +2443,7 @@ void Enr_ReqRegRemTch (void)
 
 static void Enr_ReqRegRemUsr (Rol_Role_t Role)
   {
-   extern const bool Adm_ICanAdminOtherUsrs[Rol_NUM_ROLES];
+   if (Adm_CheckIfICanAdminOtherUsrs () == Usr_I_CAN)
-
-   if (Adm_ICanAdminOtherUsrs[Gbl.Usrs.Me.Role.Logged])
       /***** Form to request the user's ID of another user *****/
       Enr_ReqAnotherUsrIDToRegisterRemove (Role);
    else
@@ -2675,7 +2673,7 @@ void Enr_ReqRemUsrFromCrs (void)
    /***** Get user to be removed *****/
    if (Usr_GetParOtherUsrCodEncryptedAndGetUsrData ())
      {
-      if (Enr_CheckIfICanRemUsrFromCrs ())
+      if (Enr_CheckIfICanRemUsrFromCrs () == Usr_I_CAN)
 	 Enr_AskIfRemoveUsrFromCrs (&Gbl.Usrs.Other.UsrDat);
       else
          Ale_ShowAlertUserNotFoundOrYouDoNotHavePermission ();
@@ -2695,7 +2693,7 @@ void Enr_RemUsrFromCrs1 (void)
       /***** Get user to be removed *****/
       if (Usr_GetParOtherUsrCodEncryptedAndGetUsrData ())
 	{
-	 if (Enr_CheckIfICanRemUsrFromCrs ())
+	 if (Enr_CheckIfICanRemUsrFromCrs () == Usr_I_CAN)
 	    Enr_EffectivelyRemUsrFromCrs (&Gbl.Usrs.Other.UsrDat,&Gbl.Hierarchy.Node[Hie_CRS],
 					  Enr_DO_NOT_REMOVE_USR_PRODUCTION,
 					  Cns_VERBOSE);
@@ -2720,23 +2718,24 @@ void Enr_RemUsrFromCrs2 (void)
 /*********** Check if I can remove another user in current course ************/
 /*****************************************************************************/
 
-static bool Enr_CheckIfICanRemUsrFromCrs (void)
+static Usr_ICan_t Enr_CheckIfICanRemUsrFromCrs (void)
   {
    switch (Gbl.Usrs.Me.Role.Logged)
      {
       case Rol_STD:
       case Rol_NET:
 	 // A student or non-editing teacher can remove herself/himself
-	 return Usr_ItsMe (Gbl.Usrs.Other.UsrDat.UsrCod) == Usr_ME;
+	 return (Usr_ItsMe (Gbl.Usrs.Other.UsrDat.UsrCod) == Usr_ME) ? Usr_I_CAN :
+								       Usr_I_CAN_NOT;
       case Rol_TCH:
       case Rol_DEG_ADM:
       case Rol_CTR_ADM:
       case Rol_INS_ADM:
       case Rol_SYS_ADM:
 	 // A teacher or administrator can remove anyone
-	 return true;
+	 return Usr_I_CAN;
       default:
-	 return false;
+	 return Usr_I_CAN_NOT;
      }
   }
 
@@ -2902,7 +2901,7 @@ void Enr_ModifyUsr1 (void)
 	    if (MeOrOther == Usr_ME || Gbl.Usrs.Me.Role.Logged >= Rol_TCH)
 	      {
 	       /***** Get user's name from record form *****/
-	       if (Usr_ICanChangeOtherUsrData (&Gbl.Usrs.Other.UsrDat))
+	       if (Usr_ICanChangeOtherUsrData (&Gbl.Usrs.Other.UsrDat) == Usr_I_CAN)
 		  Rec_GetUsrNameFromRecordForm (&Gbl.Usrs.Other.UsrDat);
 
 	       /***** Update user's data in database *****/
@@ -3008,7 +3007,7 @@ void Enr_ModifyUsr1 (void)
 	       Ale_CreateAlertUserNotFoundOrYouDoNotHavePermission ();
 	    break;
 	 case Enr_ELIMINATE_ONE_USR_FROM_PLATFORM:
-	    if (!Acc_CheckIfICanEliminateAccount (Gbl.Usrs.Other.UsrDat.UsrCod))
+	    if (Acc_CheckIfICanEliminateAccount (Gbl.Usrs.Other.UsrDat.UsrCod) == Usr_I_CAN_NOT)
 	       Ale_CreateAlertUserNotFoundOrYouDoNotHavePermission ();
 	    break;
 	 default:

swad_exam.c

@@ -315,12 +315,12 @@ void Exa_ListAllExams (struct Exa_Exams *Exams)
 /************************ Check if I can edit exams **************************/
 /*****************************************************************************/
 
-bool Exa_CheckIfICanEditExams (void)
+Usr_ICan_t Exa_CheckIfICanEditExams (void)
   {
-   static const bool ICanEditExams[Rol_NUM_ROLES] =
+   static Usr_ICan_t ICanEditExams[Rol_NUM_ROLES] =
      {
-      [Rol_TCH    ] = true,
+      [Rol_TCH    ] = Usr_I_CAN,
-      [Rol_SYS_ADM] = true,
+      [Rol_SYS_ADM] = Usr_I_CAN,
      };
 
    return ICanEditExams[Gbl.Usrs.Me.Role.Logged];
@@ -343,7 +343,7 @@ static void Exa_PutIconsListExams (void *Exams)
    if (Exams)
      {
       /***** Put icon to create a new exam *****/
-      if (Exa_CheckIfICanEditExams ())
+      if (Exa_CheckIfICanEditExams () == Usr_I_CAN)
 	 Exa_PutIconToCreateNewExam ((struct Exa_Exams *) Exams);
 
       /***** Put icon to view sessions results *****/
@@ -352,9 +352,8 @@ static void Exa_PutIconsListExams (void *Exams)
 					     NULL,NULL);
 
       /***** Link to get resource link *****/
-      if (Rsc_CheckIfICanGetLink ())
+      if (Rsc_CheckIfICanGetLink () == Usr_I_CAN)
-	 Ico_PutContextualIconToGetLink (ActReqLnkExa,NULL,
+	 Ico_PutContextualIconToGetLink (ActReqLnkExa,NULL,Exa_PutPars,Exams);
-					 Exa_PutPars,Exams);
 
       /***** Put icon to show a figure *****/
       Fig_PutIconToShowFigure (Fig_EXAMS);
@@ -629,8 +628,7 @@ static void Exa_PutIconsEditingOneExam (void *Exams)
   {
    if (Exams)
       /***** Icon to view exam *****/
-      Ico_PutContextualIconToView (ActSeeOneExa,NULL,
+      Ico_PutContextualIconToView (ActSeeOneExa,NULL,Exa_PutPars,Exams);
-				   Exa_PutPars,Exams);
   }
 
 /*****************************************************************************/
@@ -671,7 +669,7 @@ static void Exa_PutIconsToRemEditOneExam (struct Exa_Exams *Exams,
       [Rol_SYS_ADM] = ActSeeUsrExaResExa,
      };
 
-   if (Exa_CheckIfICanEditExams ())
+   if (Exa_CheckIfICanEditExams () == Usr_I_CAN)
      {
       /***** Icon to remove exam *****/
       Ico_PutContextualIconToRemove (ActReqRemExa,NULL,
@@ -683,8 +681,7 @@ static void Exa_PutIconsToRemEditOneExam (struct Exa_Exams *Exams,
 					 Exams->Exam.HiddenOrVisible);
 
       /***** Icon to edit exam *****/
-      Ico_PutContextualIconToEdit (ActEdiOneExa,NULL,
+      Ico_PutContextualIconToEdit (ActEdiOneExa,NULL,Exa_PutPars,Exams);
-				   Exa_PutPars,Exams);
      }
 
    /***** Put icon to view results of sessions in exam *****/
@@ -693,9 +690,8 @@ static void Exa_PutIconsToRemEditOneExam (struct Exa_Exams *Exams,
 					  Exa_PutPars,Exams);
 
    /***** Link to get resource link *****/
-   if (Rsc_CheckIfICanGetLink ())
+   if (Rsc_CheckIfICanGetLink () == Usr_I_CAN)
-      Ico_PutContextualIconToGetLink (ActReqLnkExa,NULL,
+      Ico_PutContextualIconToGetLink (ActReqLnkExa,NULL,Exa_PutPars,Exams);
-				      Exa_PutPars,Exams);
   }
 
 /*****************************************************************************/
@@ -973,7 +969,7 @@ void Exa_AskRemExam (void)
    struct Exa_Exams Exams;
 
    /***** Check if I can edit exams *****/
-   if (!Exa_CheckIfICanEditExams ())
+   if (Exa_CheckIfICanEditExams () == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Reset exams context *****/
@@ -1006,7 +1002,7 @@ void Exa_RemoveExam (void)
    struct Exa_Exams Exams;
 
    /***** Check if I can edit exams *****/
-   if (!Exa_CheckIfICanEditExams ())
+   if (Exa_CheckIfICanEditExams () == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Reset exams context *****/
@@ -1186,7 +1182,7 @@ static void Exa_HideUnhideExam (HidVis_HiddenOrVisible_t HiddenOrVisible)
    struct Exa_Exams Exams;
 
    /***** Check if I can edit exams *****/
-   if (!Exa_CheckIfICanEditExams ())
+   if (Exa_CheckIfICanEditExams () == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Reset exams context *****/
@@ -1216,7 +1212,7 @@ void Exa_ReqCreatOrEditExam (void)
    Exa_ExistingNewExam_t ExistingNewExam;
 
    /***** Check if I can edit exams *****/
-   if (!Exa_CheckIfICanEditExams ())
+   if (Exa_CheckIfICanEditExams () == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Reset exams context *****/
@@ -1427,7 +1423,7 @@ void Exa_ReceiveExam (void)
    char Txt[Cns_MAX_BYTES_TEXT + 1];
 
    /***** Check if I can edit exams *****/
-   if (!Exa_CheckIfICanEditExams ())
+   if (Exa_CheckIfICanEditExams () == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Reset exams context *****/
@@ -1553,20 +1549,6 @@ static void Exa_UpdateExam (struct Exa_Exam *Exam,const char *Txt)
    Ale_ShowAlert (Ale_SUCCESS,Txt_The_exam_has_been_modified);
   }
 
-/*****************************************************************************/
-/********** Get number of sessions and check is edition is possible **********/
-/*****************************************************************************/
-// Before calling this function, number of sessions must be calculated
-
-bool Exa_CheckIfEditable (const struct Exa_Exam *Exam)
-  {
-   if (Exa_CheckIfICanEditExams ())
-      /***** Questions are editable only if exam has no sessions *****/
-      return Exam->NumSess == 0;	// Exams with sessions should not be edited
-   else
-      return false;	// Questions are not editable
-  }
-
 /*****************************************************************************/
 /*************************** Show stats about exams **************************/
 /*****************************************************************************/

swad_exam.h

@@ -28,6 +28,7 @@
 /*****************************************************************************/
 
 #include "swad_exam_type.h"
+#include "swad_user.h"
 
 /*****************************************************************************/
 /***************************** Public prototypes *****************************/
@@ -39,7 +40,7 @@ void Exa_ResetExam (struct Exa_Exam *Exam);
 void Exa_SeeAllExams (void);
 void Exa_ListAllExams (struct Exa_Exams *Exams);
 
-bool Exa_CheckIfICanEditExams (void);
+Usr_ICan_t Exa_CheckIfICanEditExams (void);
 
 void Exa_SeeOneExam (void);
 void Exa_ShowOnlyOneExam (struct Exa_Exams *Exams,Frm_PutForm_t PutFormSession);
@@ -70,8 +71,6 @@ void Exa_PutFormsOneExam (struct Exa_Exams *Exams,
 
 void Exa_ReceiveExam (void);
 
-bool Exa_CheckIfEditable (const struct Exa_Exam *Exam);
-
 //-------------------------------- Figures ------------------------------------
 void Exa_GetAndShowExamsStats (void);
 

swad_exam_database.c

@@ -1668,7 +1668,7 @@ unsigned Exa_DB_GetGrpsAssociatedToSes (MYSQL_RES **mysql_res,long SesCod)
 /*** Check if I belong to any of the groups associated to the exam session ***/
 /*****************************************************************************/
 
-bool Exa_DB_CheckIfICanListThisSessionBasedOnGrps (long SesCod)
+Usr_ICan_t Exa_DB_CheckIfICanListThisSessionBasedOnGrps (long SesCod)
   {
    return
    DB_QueryEXISTS ("can not check if I can play an exam session",
@@ -1686,7 +1686,8 @@ bool Exa_DB_CheckIfICanListThisSessionBasedOnGrps (long SesCod)
 			     " WHERE grp_users.UsrCod=%ld"
 			       " AND grp_users.GrpCod=exa_groups.GrpCod)))",
 		   SesCod,
-		   Gbl.Usrs.Me.UsrDat.UsrCod);
+		   Gbl.Usrs.Me.UsrDat.UsrCod) ? Usr_I_CAN :
+						Usr_I_CAN_NOT;
   }
 
 /*****************************************************************************/
@@ -2150,6 +2151,12 @@ bool Exa_DB_CheckIfUserAgentIsTheSameAsTheLast (long PrnCod,const char *UserAgen
 
 void Exa_DB_LogAccess (long LogCod,long PrnCod,ExaLog_Action_t Action)
   {
+   static char YN[Usr_NUM_I_CAN] =
+     {
+      [Usr_I_CAN_NOT] = 'N',
+      [Usr_I_CAN    ] = 'Y',
+     };
+
    /* Log access in exam log.
       Redundant data (also present in log table) are stored for speed */
    DB_QueryINSERT ("can not log exam access",
@@ -2161,8 +2168,7 @@ void Exa_DB_LogAccess (long LogCod,long PrnCod,ExaLog_Action_t Action)
 		   PrnCod,
 		   (unsigned) Action,
 		   ExaLog_GetQstInd (),
-		   ExaLog_GetIfCanAnswer () ? 'Y' :
+		   YN[ExaLog_GetIfCanAnswer ()],
-					      'N',
 		   // NOW()   	  	   Redundant, for speed
 		   Par_GetIP ());	// Redundant, for speed
   }

swad_exam_database.h

@@ -128,7 +128,7 @@ void Exa_DB_RemoveUsrFromSessionTablesInCrs (long UsrCod,long CrsCod);
 //--------------------------------- Groups ------------------------------------
 void Exa_DB_CreateGrpAssociatedToSes (long SesCod,long GrpCod);
 unsigned Exa_DB_GetGrpsAssociatedToSes (MYSQL_RES **mysql_res,long SesCod);
-bool Exa_DB_CheckIfICanListThisSessionBasedOnGrps (long SesCod);
+Usr_ICan_t Exa_DB_CheckIfICanListThisSessionBasedOnGrps (long SesCod);
 void Exa_DB_RemoveAllGrpsFromExa (long ExaCod);
 void Exa_DB_RemoveAllGrpsFromCrs (long CrsCod);
 void Exa_DB_RemoveAllGrpsFromSes (long SesCod);

swad_exam_log.c

@@ -54,7 +54,7 @@ static struct
    long PrnCod;			// Exam print code
    int  QstInd;			// Exam print question index
    ExaLog_Action_t Action;	// Action performed by user
-   bool ICanAnswer;		// Exam print is open and accesible to answer by the user
+   Usr_ICan_t ICanAnswer;		// Exam print is open and accesible to answer by the user
   } ExaLog_Log =
   {
    .PrnCod     = -1L,	// -1 means no print code set
@@ -116,12 +116,12 @@ int ExaLog_GetQstInd (void)
 /************* Set and get if exam print is open and accessible **************/
 /*****************************************************************************/
 
-void ExaLog_SetIfCanAnswer (bool ICanAnswer)
+void ExaLog_SetIfCanAnswer (Usr_ICan_t ICanAnswer)
   {
    ExaLog_Log.ICanAnswer = ICanAnswer;
   }
 
-bool ExaLog_GetIfCanAnswer (void)
+Usr_ICan_t ExaLog_GetIfCanAnswer (void)
   {
    return ExaLog_Log.ICanAnswer;
   }

swad_exam_log.h

@@ -54,8 +54,8 @@ void ExaLog_SetAction (ExaLog_Action_t Action);
 ExaLog_Action_t ExaLog_GetAction (void);
 void ExaLog_SetQstInd (unsigned QstInd);
 int ExaLog_GetQstInd (void);
-void ExaLog_SetIfCanAnswer (bool CanBeAnswered);
+void ExaLog_SetIfCanAnswer (Usr_ICan_t CanBeAnswered);
-bool ExaLog_GetIfCanAnswer (void);
+Usr_ICan_t ExaLog_GetIfCanAnswer (void);
 
 void ExaLog_LogAccess (long LogCod);
 

swad_exam_print.c

@@ -178,7 +178,7 @@ void ExaPrn_ShowExamPrint (void)
    ExaSes_GetAndCheckPars (&Exams,&Session);
 
    /***** Check if I can access to this session *****/
-   if (ExaSes_CheckIfICanAnswerThisSession (&Exams.Exam,&Session))
+   if (ExaSes_CheckIfICanAnswerThisSession (&Exams.Exam,&Session) == Usr_I_CAN)
      {
       /***** Set basic data of exam print *****/
       Print.SesCod = Session.SesCod;
@@ -996,7 +996,7 @@ void ExaPrn_ReceivePrintAnswer (void)
    ExaLog_SetQstInd (QstInd);
 
    /***** Check if session if visible and open *****/
-   if (ExaSes_CheckIfICanAnswerThisSession (&Exams.Exam,&Session))
+   if (ExaSes_CheckIfICanAnswerThisSession (&Exams.Exam,&Session) == Usr_I_CAN)
      {
       /***** Set log open to true ****/
       ExaLog_SetIfCanAnswer (true);

swad_exam_result.c

@@ -69,8 +69,8 @@ extern struct Globals Gbl;
 
 struct ExaRes_ICanView
   {
-   bool Result;
+   Usr_ICan_t Result;
-   bool Score;
+   Usr_ICan_t Score;
   };
 
 /*****************************************************************************/
@@ -292,7 +292,7 @@ static void ExaRes_PutFormToSelUsrsToViewResults (__attribute__((unused)) void *
 				     Txt_Results,
 				     Hlp_ASSESSMENT_Exams_results,
 				     Txt_View_results,
-				     false);	// Do not put form with date range
+				     Frm_DONT_PUT_FORM);	// Do not put form with date range
   }
 
 /*****************************************************************************/
@@ -358,7 +358,7 @@ static void ExaRes_ListAllResultsInSelectedExams (struct Exa_Exams *Exams)
       if (Usr_ChkUsrCodAndGetAllUsrDataFromUsrCod (&Gbl.Usrs.Other.UsrDat,
                                                    Usr_DONT_GET_PREFS,
                                                    Usr_DONT_GET_ROLE_IN_CRS))
-	 if (Usr_CheckIfICanViewTstExaMchResult (&Gbl.Usrs.Other.UsrDat))
+	 if (Usr_CheckIfICanViewTstExaMchResult (&Gbl.Usrs.Other.UsrDat) == Usr_I_CAN)
 	   {
 	    /***** Show sessions results *****/
 	    Gbl.Usrs.Other.UsrDat.Accepted = Enr_CheckIfUsrHasAcceptedInCurrentCrs (&Gbl.Usrs.Other.UsrDat);
@@ -424,7 +424,7 @@ static void ExaRes_ListAllResultsInExa (struct Exa_Exams *Exams)
 	 if (Usr_ChkUsrCodAndGetAllUsrDataFromUsrCod (&Gbl.Usrs.Other.UsrDat,
 	                                              Usr_DONT_GET_PREFS,
 	                                              Usr_DONT_GET_ROLE_IN_CRS))
-	    if (Usr_CheckIfICanViewTstExaMchResult (&Gbl.Usrs.Other.UsrDat))
+	    if (Usr_CheckIfICanViewTstExaMchResult (&Gbl.Usrs.Other.UsrDat) == Usr_I_CAN)
 	      {
 	       /***** Show sessions results *****/
 	       Gbl.Usrs.Other.UsrDat.Accepted = Enr_CheckIfUsrHasAcceptedInCurrentCrs (&Gbl.Usrs.Other.UsrDat);
@@ -495,7 +495,7 @@ static void ExaRes_ListAllResultsInSes (struct Exa_Exams *Exams,long SesCod)
 	 if (Usr_ChkUsrCodAndGetAllUsrDataFromUsrCod (&Gbl.Usrs.Other.UsrDat,
 	                                              Usr_DONT_GET_PREFS,
 	                                              Usr_DONT_GET_ROLE_IN_CRS))
-	    if (Usr_CheckIfICanViewTstExaMchResult (&Gbl.Usrs.Other.UsrDat))
+	    if (Usr_CheckIfICanViewTstExaMchResult (&Gbl.Usrs.Other.UsrDat) == Usr_I_CAN)
 	      {
 	       /***** Show sessions results *****/
 	       Gbl.Usrs.Other.UsrDat.Accepted = Enr_CheckIfUsrHasAcceptedInCurrentCrs (&Gbl.Usrs.Other.UsrDat);
@@ -831,7 +831,7 @@ static void ExaRes_ShowResults (struct Exa_Exams *Exams,
 	    HTM_TD_End ();
 
 	    /* Get and accumulate questions and score */
-	    if (ICanView.Score)
+	    if (ICanView.Score == Usr_I_CAN)
 	      {
 	       /* Get questions and user's answers of exam print from database */
 	       ExaPrn_GetPrintQuestionsFromDB (&Print);
@@ -852,7 +852,7 @@ static void ExaRes_ShowResults (struct Exa_Exams *Exams,
 	    HTM_TD_Begin ("class=\"RT DAT_%s LINE_LEFT %s\"",
 	                  The_GetSuffix (),
 	                  The_GetColorRows ());
-	       if (ICanView.Score)
+	       if (ICanView.Score == Usr_I_CAN)
 		  HTM_Unsigned (Print.NumQsts.All);
 	       else
 		  Ico_PutIconNotVisible ();
@@ -862,7 +862,7 @@ static void ExaRes_ShowResults (struct Exa_Exams *Exams,
 	    HTM_TD_Begin ("class=\"RT DAT_GREEN_%s %s\"",
 			  The_GetSuffix (),
 	                  The_GetColorRows ());
-	       if (ICanView.Score)
+	       if (ICanView.Score == Usr_I_CAN)
 		 {
 		  if (Print.NumQsts.Valid.Total)
 		     HTM_Unsigned (Print.NumQsts.Valid.Total);
@@ -877,7 +877,7 @@ static void ExaRes_ShowResults (struct Exa_Exams *Exams,
 	    HTM_TD_Begin ("class=\"RT DAT_RED_%s %s\"",
 	                  The_GetSuffix (),
 	                  The_GetColorRows ());
-	       if (ICanView.Score)
+	       if (ICanView.Score == Usr_I_CAN)
 		 {
 		  NumQstsInvalid = Print.NumQsts.All - Print.NumQsts.Valid.Total;
 		  if (NumQstsInvalid)
@@ -893,7 +893,7 @@ static void ExaRes_ShowResults (struct Exa_Exams *Exams,
 	    HTM_TD_Begin ("class=\"RT DAT_%s LINE_LEFT %s\"",
 	                  The_GetSuffix (),
 	                  The_GetColorRows ());
-	       if (ICanView.Score)
+	       if (ICanView.Score == Usr_I_CAN)
 		 {
 		  if (Print.NumQsts.Valid.Correct)
 		     HTM_Unsigned (Print.NumQsts.Valid.Correct);
@@ -908,7 +908,7 @@ static void ExaRes_ShowResults (struct Exa_Exams *Exams,
 	    HTM_TD_Begin ("class=\"RT DAT_%s %s\"",
 	                  The_GetSuffix (),
 	                  The_GetColorRows ());
-	       if (ICanView.Score)
+	       if (ICanView.Score == Usr_I_CAN)
 		 {
 		  if (Print.NumQsts.Valid.Wrong.Negative)
 		     HTM_Unsigned (Print.NumQsts.Valid.Wrong.Negative);
@@ -922,7 +922,7 @@ static void ExaRes_ShowResults (struct Exa_Exams *Exams,
 	    HTM_TD_Begin ("class=\"RT DAT_%s %s\"",
 	                  The_GetSuffix (),
 	                  The_GetColorRows ());
-	       if (ICanView.Score)
+	       if (ICanView.Score == Usr_I_CAN)
 		 {
 		  if (Print.NumQsts.Valid.Wrong.Zero)
 		     HTM_Unsigned (Print.NumQsts.Valid.Wrong.Zero);
@@ -936,7 +936,7 @@ static void ExaRes_ShowResults (struct Exa_Exams *Exams,
 	    HTM_TD_Begin ("class=\"RT DAT_%s %s\"",
 	                  The_GetSuffix (),
 	                  The_GetColorRows ());
-	       if (ICanView.Score)
+	       if (ICanView.Score == Usr_I_CAN)
 		 {
 		  if (Print.NumQsts.Valid.Wrong.Positive)
 		     HTM_Unsigned (Print.NumQsts.Valid.Wrong.Positive);
@@ -951,7 +951,7 @@ static void ExaRes_ShowResults (struct Exa_Exams *Exams,
 	    HTM_TD_Begin ("class=\"RT DAT_%s %s\"",
 	                  The_GetSuffix (),
 	                  The_GetColorRows ());
-	       if (ICanView.Score)
+	       if (ICanView.Score == Usr_I_CAN)
 		 {
 		  if (Print.NumQsts.Valid.Blank)
 		     HTM_Unsigned (Print.NumQsts.Valid.Blank);
@@ -966,7 +966,7 @@ static void ExaRes_ShowResults (struct Exa_Exams *Exams,
 	    HTM_TD_Begin ("class=\"RT DAT_%s LINE_LEFT %s\"",
 	                  The_GetSuffix (),
 	                  The_GetColorRows ());
-	       if (ICanView.Score)
+	       if (ICanView.Score == Usr_I_CAN)
 		 {
 		  HTM_Double2Decimals (Print.Score.Valid);
 		  HTM_Txt ("/");
@@ -980,7 +980,7 @@ static void ExaRes_ShowResults (struct Exa_Exams *Exams,
 	    HTM_TD_Begin ("class=\"RT DAT_%s %s\"",
 	                  The_GetSuffix (),
 	                  The_GetColorRows ());
-	       if (ICanView.Score)
+	       if (ICanView.Score == Usr_I_CAN)
 		  HTM_Double2Decimals (Print.NumQsts.Valid.Total ? Print.Score.Valid /
 								   (double) Print.NumQsts.Valid.Total :
 								   0.0);
@@ -992,7 +992,7 @@ static void ExaRes_ShowResults (struct Exa_Exams *Exams,
 	    HTM_TD_Begin ("class=\"RT DAT_%s LINE_LEFT %s\"",
 	                  The_GetSuffix (),
 	                  The_GetColorRows ());
-	       if (ICanView.Score)
+	       if (ICanView.Score == Usr_I_CAN)
 		 {
 		  Grade = TstPrn_ComputeGrade (Print.NumQsts.Valid.Total,Print.Score.Valid,Exam.MaxGrade);
 		  TstPrn_ShowGrade (Grade,Exam.MaxGrade);
@@ -1005,7 +1005,7 @@ static void ExaRes_ShowResults (struct Exa_Exams *Exams,
 	    /* Link to show this result */
 	    HTM_TD_Begin ("class=\"RT LINE_LEFT %s\"",
 	                  The_GetColorRows ());
-	       if (ICanView.Result)
+	       if (ICanView.Result == Usr_I_CAN)
 		 {
 		  Exams->Exam.ExaCod = Session.ExaCod;
 		  Exams->SesCod      = Session.SesCod;
@@ -1218,8 +1218,8 @@ void ExaRes_ShowExaResultAfterFinish (void)
    struct ExaPrn_Print Print;
    struct ExaRes_ICanView ICanView =
      {
-      .Result = true,	// I have just finish answering, so show result...
+      .Result = Usr_I_CAN,	// I have just finish answering, so show result...
-      .Score  = false,	// ...but not score
+      .Score  = Usr_I_CAN_NOT,	// ...but not score
      };
    unsigned Visibility = 1 << TstVis_VISIBLE_QST_ANS_TXT;	// Show only questions and answers text
 
@@ -1346,7 +1346,7 @@ static void ExaRes_ShowExamResult (const struct Exa_Exam *Exam,
 						    Usr_DONT_GET_PREFS,
 						    Usr_DONT_GET_ROLE_IN_CRS))
 	 Err_WrongUserExit ();
-      if (!Usr_CheckIfICanViewTstExaMchResult (UsrDat))
+      if (Usr_CheckIfICanViewTstExaMchResult (UsrDat) == Usr_I_CAN_NOT)
 	 Err_NoPermissionExit ();
 
       /***** Begin table *****/
@@ -1371,7 +1371,7 @@ static void ExaRes_ShowExamResult (const struct Exa_Exam *Exam,
 	 ExaRes_ShowExamResultGrade (Exam,Print,ICanView);
 
 	 /* Answers and solutions */
-	 if (ICanView->Result)
+	 if (ICanView->Result == Usr_I_CAN)
 	    ExaRes_ShowExamAnswers (UsrDat,Print,Visibility);
 
       /***** End table *****/
@@ -1398,15 +1398,17 @@ static void ExaRes_CheckIfICanViewResult (const struct Exa_Exam *Exam,
 	 ICanView->Result = (Usr_ItsMe (UsrCod) == Usr_ME &&		// The result is mine
 			     Exam->HiddenOrVisible == HidVis_VISIBLE &&	// The exam is visible
 			     Session->HiddenOrVisible == HidVis_VISIBLE &&	// The session is visible
-			     Session->ShowUsrResults);			// The results of the session are visible to users
+			     Session->ShowUsrResults) ? Usr_I_CAN :		// The results of the session are visible to users
+							Usr_I_CAN_NOT;
 	 // Whether I belong or not to groups of session is not checked here...
 	 // ...because I should be able to see old exams made in old groups to which I belonged
 
-	 if (ICanView->Result)
+	 if (ICanView->Result == Usr_I_CAN)
 	    // Depends on 5 visibility icons associated to exam
-	    ICanView->Score = TstVis_IsVisibleTotalScore (Exam->Visibility);
+	    ICanView->Score = TstVis_IsVisibleTotalScore (Exam->Visibility) ? Usr_I_CAN :
+									      Usr_I_CAN_NOT;
 	 else
-	    ICanView->Score = false;
+	    ICanView->Score = Usr_I_CAN_NOT;
 	 break;
       case Rol_NET:
       case Rol_TCH:
@@ -1415,11 +1417,11 @@ static void ExaRes_CheckIfICanViewResult (const struct Exa_Exam *Exam,
       case Rol_INS_ADM:
       case Rol_SYS_ADM:
 	 ICanView->Result =
-	 ICanView->Score  = true;
+	 ICanView->Score  = Usr_I_CAN;
 	 break;
       default:
 	 ICanView->Result =
-	 ICanView->Score  = false;
+	 ICanView->Score  = Usr_I_CAN_NOT;
 	 break;
      }
   }
@@ -1600,7 +1602,7 @@ static void ExaRes_ShowExamResultNumQsts (struct ExaPrn_Print *Print,
 
       /***** Number of questions *****/
       HTM_TD_Begin ("class=\"LB DAT_%s\"",The_GetSuffix ());
-	 if (ICanView->Result)
+	 if (ICanView->Result == Usr_I_CAN)
 	   {
 	    HTM_TxtF ("%u",Print->NumQsts.All);
 	    if (Print->NumQsts.All != Print->NumQsts.Valid.Total)
@@ -1654,7 +1656,7 @@ static void ExaRes_ShowExamResultNumAnss (struct ExaPrn_Print *Print,
 
       /***** Number of answers *****/
       HTM_TD_Begin ("class=\"LB DAT_%s\"",The_GetSuffix ());
-	 if (ICanView->Score)
+	 if (ICanView->Score == Usr_I_CAN)
 	    HTM_TxtF ("%s(<em>p<sub>i</sub></em>=1):&nbsp;%u; "
 		      "%s(-1&le;<em>p<sub>i</sub></em>&lt;0):&nbsp;%u; "
 		      "%s(<em>p<sub>i</sub></em>=0):&nbsp;%u; "
@@ -1693,7 +1695,7 @@ static void ExaRes_ShowExamResultScore (struct ExaPrn_Print *Print,
 
       /***** Score *****/
       HTM_TD_Begin ("class=\"LB DAT_%s\"",The_GetSuffix ());
-	 if (ICanView->Score)
+	 if (ICanView->Score == Usr_I_CAN)
 	   {
 	    /* Score counting all questions */
 	    if (Print->NumQsts.All == Print->NumQsts.Valid.Total)
@@ -1745,7 +1747,7 @@ static void ExaRes_ShowExamResultGrade (const struct Exa_Exam *Exam,
 
       /***** Grade *****/
       HTM_TD_Begin ("class=\"LB DAT_%s\"",The_GetSuffix ());
-	 if (ICanView->Score)
+	 if (ICanView->Score == Usr_I_CAN)
 	   {
 	    /* Grade counting all questions */
 	    if (Print->NumQsts.All == Print->NumQsts.Valid.Total)
@@ -1814,7 +1816,7 @@ static void ExaRes_WriteQstAndAnsExam (struct Usr_Data *UsrDat,
   {
    extern const char *Txt_Score;
    extern const char *Txt_Invalid_question;
-   bool ICanView[TstVis_NUM_ITEMS_VISIBILITY];
+   Usr_ICan_t ICanView[TstVis_NUM_ITEMS_VISIBILITY];
    static const char *ClassNumQst[Qst_NUM_VALIDITIES] =
      {
       [Qst_INVALID_QUESTION] = "BIG_INDEX_RED",
@@ -1840,10 +1842,14 @@ static void ExaRes_WriteQstAndAnsExam (struct Usr_Data *UsrDat,
    switch (Gbl.Usrs.Me.Role.Logged)
      {
       case Rol_STD:
-	 ICanView[TstVis_VISIBLE_QST_ANS_TXT   ] = TstVis_IsVisibleQstAndAnsTxt (Visibility);
+	 ICanView[TstVis_VISIBLE_QST_ANS_TXT   ] = TstVis_IsVisibleQstAndAnsTxt (Visibility) ? Usr_I_CAN:
-	 ICanView[TstVis_VISIBLE_FEEDBACK_TXT  ] = TstVis_IsVisibleFeedbackTxt  (Visibility);
+											       Usr_I_CAN_NOT;
-	 ICanView[TstVis_VISIBLE_CORRECT_ANSWER] = TstVis_IsVisibleCorrectAns   (Visibility);
+	 ICanView[TstVis_VISIBLE_FEEDBACK_TXT  ] = TstVis_IsVisibleFeedbackTxt  (Visibility) ? Usr_I_CAN:
-	 ICanView[TstVis_VISIBLE_EACH_QST_SCORE] = TstVis_IsVisibleEachQstScore (Visibility);
+											       Usr_I_CAN_NOT;
+	 ICanView[TstVis_VISIBLE_CORRECT_ANSWER] = TstVis_IsVisibleCorrectAns   (Visibility) ? Usr_I_CAN:
+											       Usr_I_CAN_NOT;
+	 ICanView[TstVis_VISIBLE_EACH_QST_SCORE] = TstVis_IsVisibleEachQstScore (Visibility) ? Usr_I_CAN:
+											       Usr_I_CAN_NOT;
 	 break;
       case Rol_NET:
       case Rol_TCH:
@@ -1854,13 +1860,13 @@ static void ExaRes_WriteQstAndAnsExam (struct Usr_Data *UsrDat,
 	 ICanView[TstVis_VISIBLE_QST_ANS_TXT   ] =
 	 ICanView[TstVis_VISIBLE_FEEDBACK_TXT  ] =
 	 ICanView[TstVis_VISIBLE_CORRECT_ANSWER] =
-	 ICanView[TstVis_VISIBLE_EACH_QST_SCORE] = true;
+	 ICanView[TstVis_VISIBLE_EACH_QST_SCORE] = Usr_I_CAN;
 	 break;
       default:
 	 ICanView[TstVis_VISIBLE_QST_ANS_TXT   ] =
 	 ICanView[TstVis_VISIBLE_FEEDBACK_TXT  ] =
 	 ICanView[TstVis_VISIBLE_CORRECT_ANSWER] =
-	 ICanView[TstVis_VISIBLE_EACH_QST_SCORE] = false;
+	 ICanView[TstVis_VISIBLE_EACH_QST_SCORE] = Usr_I_CAN_NOT;
 	 break;
      }
 
@@ -1879,10 +1885,10 @@ static void ExaRes_WriteQstAndAnsExam (struct Usr_Data *UsrDat,
 
 	 /* Stem */
 	 Qst_WriteQstStem (Question->Stem,ClassTxt[Question->Validity],
-			   ICanView[TstVis_VISIBLE_QST_ANS_TXT]);
+			   ICanView[TstVis_VISIBLE_QST_ANS_TXT] == Usr_I_CAN);
 
 	 /* Media */
-	 if (ICanView[TstVis_VISIBLE_QST_ANS_TXT])
+	 if (ICanView[TstVis_VISIBLE_QST_ANS_TXT] == Usr_I_CAN)
 	    Med_ShowMedia (&Question->Media,
 			   "Tst_MED_SHOW_CONT",
 			   "Tst_MED_SHOW");
@@ -1895,7 +1901,7 @@ static void ExaRes_WriteQstAndAnsExam (struct Usr_Data *UsrDat,
 				  ClassFeedback[Question->Validity]);
 
 	 /* Write score retrieved from database */
-	 if (ICanView[TstVis_VISIBLE_EACH_QST_SCORE])
+	 if (ICanView[TstVis_VISIBLE_EACH_QST_SCORE] == Usr_I_CAN)
 	   {
 	    HTM_DIV_Begin ("class=\"LM DAT_SMALL_%s\"",
 	                   The_GetSuffix ());
@@ -1914,7 +1920,7 @@ static void ExaRes_WriteQstAndAnsExam (struct Usr_Data *UsrDat,
 	   }
 
 	 /* Question feedback */
-	 if (ICanView[TstVis_VISIBLE_FEEDBACK_TXT])
+	 if (ICanView[TstVis_VISIBLE_FEEDBACK_TXT] == Usr_I_CAN)
 	    Qst_WriteQstFeedback (Question->Feedback,
 	                          ClassFeedback[Question->Validity]);
 

swad_exam_session.c

@@ -72,10 +72,10 @@ static void ExaSes_ListOneOrMoreSessions (struct Exa_Exams *Exams,
       					  Frm_PutForm_t PutFormSession,
 				          unsigned NumSessions,
                                           MYSQL_RES *mysql_res);
-static void ExaSes_ListOneOrMoreSessionsHeading (bool ICanEditSessions);
+static void ExaSes_ListOneOrMoreSessionsHeading (Usr_ICan_t ICanEditSessions);
-static bool ExaSes_CheckIfICanEditSessions (void);
+static Usr_ICan_t ExaSes_CheckIfICanEditSessions (void);
-static bool ExaSes_CheckIfICanEditThisSession (long UsrCod);
+static Usr_ICan_t ExaSes_CheckIfICanEditThisSession (long UsrCod);
-static bool ExaSes_CheckIfVisibilityOfResultsCanBeChanged (const struct ExaSes_Session *Session);
+static Usr_ICan_t ExaSes_CheckIfICanChangeVisibilityOfResults (const struct ExaSes_Session *Session);
 static void ExaSes_ListOneOrMoreSessionsIcons (struct Exa_Exams *Exams,
                                                const struct ExaSes_Session *Session,
 					       const char *Anchor);
@@ -151,7 +151,8 @@ void ExaSes_ListSessions (struct Exa_Exams *Exams,
                  Hlp_ASSESSMENT_Exams_sessions,Box_NOT_CLOSABLE);
 
       /***** Select whether show only my groups or all groups *****/
-      if (Gbl.Crs.Grps.NumGrps && ExaSes_CheckIfICanEditSessions ())
+      if (Gbl.Crs.Grps.NumGrps &&
+	  ExaSes_CheckIfICanEditSessions () == Usr_I_CAN)
 	{
 	 Set_BeginSettingsHead ();
 	    Grp_ShowFormToSelWhichGrps (ActSeeOneExa,Exa_PutPars,Exams);
@@ -203,15 +204,10 @@ void ExaSes_GetSessionDataByCod (struct ExaSes_Session *Session)
 
 static void ExaSes_PutIconsInListOfSessions (void *Exams)
   {
-   bool ICanEditSessions;
-
    if (Exams)
-     {
+      if (ExaSes_CheckIfICanEditSessions () == Usr_I_CAN)
-      /***** Put icon to create a new exam session in current exam *****/
+         /***** Put icon to create a new exam session in current exam *****/
-      ICanEditSessions = ExaSes_CheckIfICanEditSessions ();
-      if (ICanEditSessions)
 	 ExaSes_PutIconToCreateNewSession ((struct Exa_Exams *) Exams);
-     }
   }
 
 /*****************************************************************************/
@@ -237,7 +233,7 @@ static void ExaSes_ListOneOrMoreSessions (struct Exa_Exams *Exams,
    unsigned UniqueId;
    struct ExaSes_Session Session;
    char *Anchor;
-   bool ICanEditSessions = ExaSes_CheckIfICanEditSessions ();
+   Usr_ICan_t ICanEditSessions = ExaSes_CheckIfICanEditSessions ();
    long SesCodToBeEdited = PutFormSession == Frm_PUT_FORM &&
 			   Exams->SesCod > 0 ? Exams->SesCod :
 					       -1L;
@@ -260,7 +256,7 @@ static void ExaSes_ListOneOrMoreSessions (struct Exa_Exams *Exams,
 	 /***** Get exam session data from row *****/
 	 ExaSes_GetSessionDataFromRow (mysql_res,&Session);
 
-	 if (ExaSes_CheckIfICanListThisSessionBasedOnGrps (Session.SesCod))
+	 if (ExaSes_CheckIfICanListThisSessionBasedOnGrps (Session.SesCod) == Usr_I_CAN)
 	   {
 	    /***** Build anchor string *****/
 	    if (asprintf (&Anchor,"evt_%ld_%ld",Exams->Exam.ExaCod,Session.SesCod) < 0)
@@ -333,7 +329,7 @@ static void ExaSes_ListOneOrMoreSessions (struct Exa_Exams *Exams,
 /************* Put a column for exam session start and end times *************/
 /*****************************************************************************/
 
-static void ExaSes_ListOneOrMoreSessionsHeading (bool ICanEditSessions)
+static void ExaSes_ListOneOrMoreSessionsHeading (Usr_ICan_t ICanEditSessions)
   {
    extern const char *Txt_START_END_TIME[Dat_NUM_START_END_TIME];
    extern const char *Txt_Session;
@@ -343,14 +339,14 @@ static void ExaSes_ListOneOrMoreSessionsHeading (bool ICanEditSessions)
    HTM_TR_Begin (NULL);
 
       /***** Column for icons *****/
-      if (ICanEditSessions)
+      if (ICanEditSessions == Usr_I_CAN)
 	 HTM_TH_Empty (1);
 
       /***** The rest of columns *****/
-      HTM_TH (Txt_START_END_TIME[Exa_ORDER_BY_START_DATE]   ,HTM_HEAD_LEFT  );
+      HTM_TH (Txt_START_END_TIME[Exa_ORDER_BY_START_DATE],HTM_HEAD_LEFT  );
-      HTM_TH (Txt_START_END_TIME[Exa_ORDER_BY_END_DATE  ]   ,HTM_HEAD_LEFT  );
+      HTM_TH (Txt_START_END_TIME[Exa_ORDER_BY_END_DATE  ],HTM_HEAD_LEFT  );
-      HTM_TH (Txt_Session                                   ,HTM_HEAD_LEFT  );
+      HTM_TH (Txt_Session                                ,HTM_HEAD_LEFT  );
-      HTM_TH (Txt_Results                                   ,HTM_HEAD_CENTER);
+      HTM_TH (Txt_Results                                ,HTM_HEAD_CENTER);
 
    /***** End row *****/
    HTM_TR_End ();
@@ -360,13 +356,13 @@ static void ExaSes_ListOneOrMoreSessionsHeading (bool ICanEditSessions)
 /********************** Check if I can edit sessions *************************/
 /*****************************************************************************/
 
-static bool ExaSes_CheckIfICanEditSessions (void)
+static Usr_ICan_t ExaSes_CheckIfICanEditSessions (void)
   {
-   static const bool ICanEditSessions[Rol_NUM_ROLES] =
+   static Usr_ICan_t ICanEditSessions[Rol_NUM_ROLES] =
      {
-      [Rol_NET    ] = true,
+      [Rol_NET    ] = Usr_I_CAN,
-      [Rol_TCH    ] = true,
+      [Rol_TCH    ] = Usr_I_CAN,
-      [Rol_SYS_ADM] = true,
+      [Rol_SYS_ADM] = Usr_I_CAN,
      };
 
    return ICanEditSessions[Gbl.Usrs.Me.Role.Logged];
@@ -376,17 +372,18 @@ static bool ExaSes_CheckIfICanEditSessions (void)
 /************ Check if I can edit (remove/resume) an exam session ************/
 /*****************************************************************************/
 
-static bool ExaSes_CheckIfICanEditThisSession (long UsrCod)
+static Usr_ICan_t ExaSes_CheckIfICanEditThisSession (long UsrCod)
   {
    switch (Gbl.Usrs.Me.Role.Logged)
      {
       case Rol_NET:
-	 return (UsrCod == Gbl.Usrs.Me.UsrDat.UsrCod);	// Only if I am the creator
+	 return (UsrCod == Gbl.Usrs.Me.UsrDat.UsrCod) ? Usr_I_CAN :	// Only if I am the creator
+						        Usr_I_CAN_NOT;
       case Rol_TCH:
       case Rol_SYS_ADM:
-	 return true;
+	 return Usr_I_CAN;
       default:
-	 return false;
+	 return Usr_I_CAN_NOT;
      }
   }
 
@@ -394,14 +391,13 @@ static bool ExaSes_CheckIfICanEditThisSession (long UsrCod)
 /********** Check if visibility of session results can be changed ************/
 /*****************************************************************************/
 
-static bool ExaSes_CheckIfVisibilityOfResultsCanBeChanged (const struct ExaSes_Session *Session)
+static Usr_ICan_t ExaSes_CheckIfICanChangeVisibilityOfResults (const struct ExaSes_Session *Session)
   {
    if (Session->ShowUsrResults ||						// Results are currently visible
        Session->TimeUTC[Dat_END_TIME] < Dat_GetStartExecutionTimeUTC ())	// End of time is in the past
-      if (ExaSes_CheckIfICanEditThisSession (Session->UsrCod))
+      return ExaSes_CheckIfICanEditThisSession (Session->UsrCod);
-	 return true;
 
-   return false;
+   return Usr_I_CAN_NOT;
   }
 
 /*****************************************************************************/
@@ -424,7 +420,7 @@ static void ExaSes_ListOneOrMoreSessionsIcons (struct Exa_Exams *Exams,
    /***** Begin cell *****/
    HTM_TD_Begin ("rowspan=\"2\" class=\"BT %s\"",The_GetColorRows ());
 
-      if (ExaSes_CheckIfICanEditThisSession (Session->UsrCod))
+      if (ExaSes_CheckIfICanEditThisSession (Session->UsrCod) == Usr_I_CAN)
 	{
 	 /***** Icon to remove the exam session *****/
 	 Ico_PutContextualIconToRemove (ActReqRemExaSes,NULL,
@@ -504,7 +500,7 @@ static void ExaSes_ListOneOrMoreSessionsTitleGrps (struct Exa_Exams *Exams,
 
       /***** Session title *****/
       HTM_ARTICLE_Begin (Anchor);
-	 if (ExaSes_CheckIfICanAnswerThisSession (&Exams->Exam,Session))
+	 if (ExaSes_CheckIfICanAnswerThisSession (&Exams->Exam,Session) == Usr_I_CAN)
 	   {
 	    Frm_BeginForm (ActSeeExaPrn);
 	       Exa_PutPars (Exams);
@@ -648,13 +644,13 @@ static void ExaSes_ListOneOrMoreSessionsResultTch (struct Exa_Exams *Exams,
    Exams->SesCod      = Session->SesCod;
 
    /***** Show exam session results *****/
-   if (ExaSes_CheckIfICanEditThisSession (Session->UsrCod))
+   if (ExaSes_CheckIfICanEditThisSession (Session->UsrCod) == Usr_I_CAN)
       Lay_PutContextualLinkOnlyIcon (ActSeeUsrExaResSes,ExaRes_RESULTS_BOX_ID,
 				     ExaSes_PutParsEdit,Exams,
 				     "trophy.svg",Ico_BLACK);
 
    /***** Check if visibility of session results can be changed *****/
-   if (ExaSes_CheckIfVisibilityOfResultsCanBeChanged (Session))
+   if (ExaSes_CheckIfICanChangeVisibilityOfResults (Session) == Usr_I_CAN)
      {
       /***** Put form to change visibility of session results *****/
       if (Session->ShowUsrResults)
@@ -694,7 +690,7 @@ void ExaSes_ToggleVisResultsSesUsr (void)
    ExaSes_GetAndCheckPars (&Exams,&Session);
 
    /***** Check if visibility of session results can be changed *****/
-   if (!ExaSes_CheckIfVisibilityOfResultsCanBeChanged (&Session))
+   if (ExaSes_CheckIfICanChangeVisibilityOfResults (&Session) == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Toggle visibility of exam session results *****/
@@ -812,7 +808,7 @@ void ExaSes_RemoveSession (void)
    ExaSes_GetAndCheckPars (&Exams,&Session);
 
    /***** Check if I can remove this exam session *****/
-   if (!ExaSes_CheckIfICanEditThisSession (Session.UsrCod))
+   if (ExaSes_CheckIfICanEditThisSession (Session.UsrCod) == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Remove questions of exams prints, and exam prints, in this session *****/
@@ -866,7 +862,7 @@ static void ExaSes_HideUnhideSession (HidVis_HiddenOrVisible_t HiddenOrVisible)
    ExaSes_GetAndCheckPars (&Exams,&Session);
 
    /***** Check if I can remove this exam session *****/
-   if (!ExaSes_CheckIfICanEditThisSession (Session.UsrCod))
+   if (ExaSes_CheckIfICanEditThisSession (Session.UsrCod) == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Hide session *****/
@@ -1211,22 +1207,22 @@ static void ExaSes_CreateGrpsAssociatedToExamSession (long SesCod,
 /******** Check if I belong to any of the groups of an exam session **********/
 /*****************************************************************************/
 
-bool ExaSes_CheckIfICanAnswerThisSession (const struct Exa_Exam *Exam,
+Usr_ICan_t ExaSes_CheckIfICanAnswerThisSession (const struct Exa_Exam *Exam,
-                                          const struct ExaSes_Session *Session)
+                                                const struct ExaSes_Session *Session)
   {
    /***** 1. Sessions in hidden exams are not accesible
           2. Hidden or closed sessions are not accesible *****/
    if (Exam->HiddenOrVisible == HidVis_HIDDEN ||
        Session->HiddenOrVisible == HidVis_HIDDEN ||
        !Session->Open)
-      return false;
+      return Usr_I_CAN_NOT;
 
    /***** Exam is visible, session is visible and open ==>
           ==> I can answer this session if I can list it based on groups *****/
    return ExaSes_CheckIfICanListThisSessionBasedOnGrps (Session->SesCod);
   }
 
-bool ExaSes_CheckIfICanListThisSessionBasedOnGrps (long SesCod)
+Usr_ICan_t ExaSes_CheckIfICanListThisSessionBasedOnGrps (long SesCod)
   {
    switch (Gbl.Usrs.Me.Role.Logged)
      {
@@ -1237,8 +1233,8 @@ bool ExaSes_CheckIfICanListThisSessionBasedOnGrps (long SesCod)
       case Rol_NET:
       case Rol_TCH:
       case Rol_SYS_ADM:
-	 return true;
+	 return Usr_I_CAN;
       default:
-	 return false;
+	 return Usr_I_CAN_NOT;
      }
   }

swad_exam_session.h

@@ -69,8 +69,8 @@ void ExaSes_GetAndCheckPars (struct Exa_Exams *Exams,
 void ExaSes_ReqCreatOrEditSes (void);
 void ExaSes_ReceiveSession (void);
 
-bool ExaSes_CheckIfICanAnswerThisSession (const struct Exa_Exam *Exam,
+Usr_ICan_t ExaSes_CheckIfICanAnswerThisSession (const struct Exa_Exam *Exam,
-                                          const struct ExaSes_Session *Session);
+                                                const struct ExaSes_Session *Session);
-bool ExaSes_CheckIfICanListThisSessionBasedOnGrps (long SesCod);
+Usr_ICan_t ExaSes_CheckIfICanListThisSessionBasedOnGrps (long SesCod);
 
 #endif

swad_exam_set.c

@@ -91,13 +91,13 @@ static void ExaSet_ListOneOrMoreSetsForEdition (struct Exa_Exams *Exams,
 					        unsigned MaxSetInd,
 					        unsigned NumSets,
                                                 MYSQL_RES *mysql_res,
-                                                bool ICanEditSets);
+                                                Usr_ICan_t ICanEditSets);
 static void ExaSet_PutTableHeadingForSets (void);
 
 static void ExaSet_ListOneOrMoreQuestionsForEdition (struct Exa_Exams *Exams,
 						     unsigned NumQsts,
                                                      MYSQL_RES *mysql_res,
-						     bool ICanEditQuestions);
+						     Usr_ICan_t ICanEditQuestions);
 static void ExaSet_ListQuestionForEdition (struct Qst_Question *Question,
                                            unsigned QstInd,const char *Anchor);
 
@@ -106,6 +106,8 @@ static void ExaSet_FreeListsSelectedQuestions (struct Exa_Exams *Exams);
 
 static void ExaSet_CopyQstFromBankToExamSet (const struct ExaSet_Set *Set,long QstCod);
 
+static Usr_ICan_t ExaSet_CheckIfICanEditExamSets (const struct Exa_Exam *Exam);
+
 static void ExaSet_RemoveMediaFromStemOfQst (long QstCod,long SetCod);
 static void ExaSet_RemoveMediaFromAllAnsOfQst (long QstCod,long SetCod);
 
@@ -251,7 +253,7 @@ void ExaSet_ReceiveSet (void)
    Exa_GetExamDataByCod (&Exams.Exam);
 
    /***** Check if exam is editable *****/
-   if (!Exa_CheckIfEditable (&Exams.Exam))
+   if (ExaSet_CheckIfICanEditExamSets (&Exams.Exam) == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** If I can edit exams ==> receive set from form *****/
@@ -318,7 +320,7 @@ void ExaSet_ChangeSetTitle (void)
    char NewTitle[ExaSet_MAX_BYTES_TITLE + 1];
 
    /***** Check if I can edit exams *****/
-   if (!Exa_CheckIfICanEditExams ())
+   if (Exa_CheckIfICanEditExams () == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Reset exams context *****/
@@ -330,7 +332,7 @@ void ExaSet_ChangeSetTitle (void)
    ExaSet_GetAndCheckPars (&Exams,&Set);
 
    /***** Check if exam is editable *****/
-   if (!Exa_CheckIfEditable (&Exams.Exam))
+   if (ExaSet_CheckIfICanEditExamSets (&Exams.Exam) == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Receive new title from form *****/
@@ -361,7 +363,7 @@ void ExaSet_ChangeNumQstsToExam (void)
    unsigned NumQstsToPrint;
 
    /***** Check if I can edit exams *****/
-   if (!Exa_CheckIfICanEditExams ())
+   if (Exa_CheckIfICanEditExams () == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Reset exams context *****/
@@ -373,7 +375,7 @@ void ExaSet_ChangeNumQstsToExam (void)
    ExaSet_GetAndCheckPars (&Exams,&Set);
 
    /***** Check if exam is editable *****/
-   if (!Exa_CheckIfEditable (&Exams.Exam))
+   if (ExaSet_CheckIfICanEditExamSets (&Exams.Exam) == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Get number of questions in set to appear in exam print *****/
@@ -480,7 +482,7 @@ void ExaSet_ListExamSets (struct Exa_Exams *Exams)
    MYSQL_RES *mysql_res;
    unsigned MaxSetInd;
    unsigned NumSets;
-   bool ICanEditSets = Exa_CheckIfEditable (&Exams->Exam);
+   Usr_ICan_t ICanEditSets = ExaSet_CheckIfICanEditExamSets (&Exams->Exam);
 
    /***** Get maximum set index *****/
    MaxSetInd = Exa_DB_GetMaxSetIndexInExam (Exams->Exam.ExaCod);
@@ -516,14 +518,14 @@ static void ExaSet_ListSetQuestions (struct Exa_Exams *Exams,
    extern const char *Txt_Questions;
    MYSQL_RES *mysql_res;
    unsigned NumQsts;
-   bool ICanEditQuestions = Exa_CheckIfEditable (&Exams->Exam);
+   Usr_ICan_t ICanEditQuestions = ExaSet_CheckIfICanEditExamSets (&Exams->Exam);
 
    /***** Begin box *****/
    Box_BoxBegin (Txt_Questions,
-		 ICanEditQuestions ? ExaSet_PutIconToAddNewQuestions :
+		 ICanEditQuestions == Usr_I_CAN ? ExaSet_PutIconToAddNewQuestions :
-				     NULL,
+						  NULL,
-		 ICanEditQuestions ? Exams :
+		 ICanEditQuestions == Usr_I_CAN ? Exams :
-				     NULL,
+						  NULL,
 		 Hlp_ASSESSMENT_Exams_questions,Box_NOT_CLOSABLE);
 
       /***** Show table with questions *****/
@@ -546,7 +548,7 @@ static void ExaSet_ListOneOrMoreSetsForEdition (struct Exa_Exams *Exams,
 					        unsigned MaxSetInd,
 					        unsigned NumSets,
                                                 MYSQL_RES *mysql_res,
-                                                bool ICanEditSets)
+                                                Usr_ICan_t ICanEditSets)
   {
    extern const char *Txt_Movement_not_allowed;
    unsigned NumSet;
@@ -586,14 +588,14 @@ static void ExaSet_ListOneOrMoreSetsForEdition (struct Exa_Exams *Exams,
 	                  The_GetColorRows ());
 
 	       /* Put icon to remove the set */
-	       if (ICanEditSets)
+	       if (ICanEditSets == Usr_I_CAN)
 		  Ico_PutContextualIconToRemove (ActReqRemExaSet,NULL,
 						 ExaSet_PutParsOneSet,Exams);
 	       else
 		  Ico_PutIconRemovalNotAllowed ();
 
 	       /* Put icon to move up the question */
-	       if (ICanEditSets && Set.SetInd > 1)
+	       if (ICanEditSets == Usr_I_CAN && Set.SetInd > 1)
 		  Lay_PutContextualLinkOnlyIcon (ActUp_ExaSet,Anchor,
 						 ExaSet_PutParsOneSet,Exams,
 						 "arrow-up.svg",Ico_BLACK);
@@ -785,7 +787,7 @@ void ExaSet_GetSetDataFromRow (MYSQL_RES *mysql_res,struct ExaSet_Set *Set)
 static void ExaSet_ListOneOrMoreQuestionsForEdition (struct Exa_Exams *Exams,
 						     unsigned NumQsts,
                                                      MYSQL_RES *mysql_res,
-						     bool ICanEditQuestions)
+						     Usr_ICan_t ICanEditQuestions)
   {
    extern const char *Txt_Questions;
    extern const char *Txt_No_INDEX;
@@ -839,7 +841,7 @@ static void ExaSet_ListOneOrMoreQuestionsForEdition (struct Exa_Exams *Exams,
 	    HTM_TD_Begin ("class=\"BT %s\"",The_GetColorRows ());
 
 	       /* Put icon to remove the question */
-	       if (ICanEditQuestions)
+	       if (ICanEditQuestions == Usr_I_CAN)
 		  Ico_PutContextualIconToRemove (ActReqRemSetQst,NULL,
 						 ExaSet_PutParsOneQst,Exams);
 	       else
@@ -1250,7 +1252,7 @@ void ExaSet_ReqRemSet (void)
    ExaSet_GetAndCheckPars (&Exams,&Set);
 
    /***** Check if exam is editable *****/
-   if (!Exa_CheckIfEditable (&Exams.Exam))
+   if (ExaSet_CheckIfICanEditExamSets (&Exams.Exam) == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Show question and button to remove question *****/
@@ -1282,7 +1284,7 @@ void ExaSet_RemoveSet (void)
    ExaSet_GetAndCheckPars (&Exams,&Set);
 
    /***** Check if exam is editable *****/
-   if (!Exa_CheckIfEditable (&Exams.Exam))
+   if (ExaSet_CheckIfICanEditExamSets (&Exams.Exam) == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Remove the set from all tables *****/
@@ -1323,7 +1325,7 @@ void ExaSet_MoveUpSet (void)
    ExaSet_GetAndCheckPars (&Exams,&Set);
 
    /***** Check if exam is editable *****/
-   if (!Exa_CheckIfEditable (&Exams.Exam))
+   if (ExaSet_CheckIfICanEditExamSets (&Exams.Exam) == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Get set index *****/
@@ -1369,7 +1371,7 @@ void ExaSet_MoveDownSet (void)
    ExaSet_GetAndCheckPars (&Exams,&Set);
 
    /***** Check if exam is editable *****/
-   if (!Exa_CheckIfEditable (&Exams.Exam))
+   if (ExaSet_CheckIfICanEditExamSets (&Exams.Exam) == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Get set index *****/
@@ -1396,6 +1398,21 @@ void ExaSet_MoveDownSet (void)
    Exa_PutFormsOneExam (&Exams,Exa_EXISTING_EXAM);
   }
 
+/*****************************************************************************/
+/**************** Check is edition of exam sets is possible ******************/
+/*****************************************************************************/
+// Before calling this function, number of sessions must be calculated
+
+static Usr_ICan_t ExaSet_CheckIfICanEditExamSets (const struct Exa_Exam *Exam)
+  {
+   if (Exa_CheckIfICanEditExams () == Usr_I_CAN)
+      /***** Questions are editable only if exam has no sessions *****/
+      return (Exam->NumSess == 0) ? Usr_I_CAN :	// Exams with sessions should not be edited
+				    Usr_I_CAN_NOT;
+   else
+      return Usr_I_CAN_NOT;	// Sets of questions are not editable
+  }
+
 /*****************************************************************************/
 /********************** Request the removal of a question ********************/
 /*****************************************************************************/

swad_follow.c

@@ -572,13 +572,13 @@ static void Fol_ShowFollowedOrFollower (struct Usr_Data *UsrDat)
       [PhoSha_SHAPE_OVAL     ] = "PHOTOO60x80",
       [PhoSha_SHAPE_RECTANGLE] = "PHOTOR60x80",
      };
-   bool Visible = Pri_ShowingIsAllowed (UsrDat->BaPrfVisibility,UsrDat);
+   Usr_ICan_t ICanView = Pri_CheckIfICanView (UsrDat->BaPrfVisibility,UsrDat);
 
    HTM_DIV_Begin ("class=\"FOLLOW_USR\"");
 
       /***** Show user's photo *****/
       HTM_DIV_Begin ("class=\"FOLLOW_PHOTO\"");
-	 if (Visible)
+	 if (ICanView == Usr_I_CAN)
 	    Pho_ShowUsrPhotoIfAllowed (UsrDat,
 				       ClassPhoto[Gbl.Prefs.PhotoShape],Pho_ZOOM);
       HTM_DIV_End ();
@@ -586,7 +586,7 @@ static void Fol_ShowFollowedOrFollower (struct Usr_Data *UsrDat)
       /***** Show user's name and icon to follow/unfollow *****/
       HTM_DIV_Begin ("class=\"FOLLOW_TXT\"");
 
-	 if (Visible)
+	 if (ICanView == Usr_I_CAN)
 	   {
 	    /* Put form to go to public profile */
 	    Frm_BeginForm (ActSeeOthPubPrf);
@@ -612,7 +612,7 @@ static void Fol_ShowFollowedOrFollower (struct Usr_Data *UsrDat)
 					     UsrDat->UsrCod))	// I follow user
 	       /* Form to unfollow */
 	       Fol_PutIconToUnfollow (UsrDat->EnUsrCod);
-	    else if (Visible)	// I do not follow this user and I can follow
+	    else if (ICanView == Usr_I_CAN)	// I do not follow this user and I can follow
 	       /* Form to follow */
 	       Fol_PutIconToFollow (UsrDat->EnUsrCod);
 	   }
@@ -636,13 +636,13 @@ static void Fol_WriteRowUsrToFollowOnRightColumn (struct Usr_Data *UsrDat)
       [PhoSha_SHAPE_OVAL     ] = "PHOTOO21x28",
       [PhoSha_SHAPE_RECTANGLE] = "PHOTOR21x28",
      };
-   bool Visible = Pri_ShowingIsAllowed (UsrDat->BaPrfVisibility,UsrDat);
+   Usr_ICan_t ICanView = Pri_CheckIfICanView (UsrDat->BaPrfVisibility,UsrDat);
 
    /***** Show user's photo *****/
    HTM_TR_Begin (NULL);
 
       HTM_TD_Begin ("class=\"CON_PHOTO %s\"",The_GetColorRows ());
-	 if (Visible)
+	 if (ICanView == Usr_I_CAN)
 	    Pho_ShowUsrPhotoIfAllowed (UsrDat,
 	                               ClassPhoto[Gbl.Prefs.PhotoShape],Pho_ZOOM);
       HTM_TD_End ();
@@ -650,7 +650,7 @@ static void Fol_WriteRowUsrToFollowOnRightColumn (struct Usr_Data *UsrDat)
       /***** User's name *****/
       HTM_TD_Begin ("class=\"CON_NAME_FOLLOW %s\"",
                     The_GetColorRows ());
-	 if (Visible)
+	 if (ICanView == Usr_I_CAN)
 	   {
 	    /* Put form to go to public profile */
 	    Frm_BeginForm (ActSeeOthPubPrf);
@@ -679,7 +679,7 @@ static void Fol_WriteRowUsrToFollowOnRightColumn (struct Usr_Data *UsrDat)
 					     UsrDat->UsrCod))	// I follow user
 	       /* Form to unfollow */
 	       Fol_PutIconToUnfollow (UsrDat->EnUsrCod);
-	    else if (Visible)	// I do not follow this user and I can follow
+	    else if (ICanView == Usr_I_CAN)	// I do not follow this user and I can follow
 	       /* Form to follow */
 	       Fol_PutIconToFollow (UsrDat->EnUsrCod);
 	   }

swad_forum.c

@@ -379,7 +379,7 @@ static void For_WriteFormForumPst (struct For_Forums *Forums,
 
 static void For_PutParsRemThread (void *Forums);
 
-static bool For_CheckIfICanMoveThreads (void);
+static Usr_ICan_t For_CheckIfICanMoveThreads (void);
 static void For_InsertThrInClipboard (long ThrCod);
 
 static void For_ShowStatOfAForumType (For_ForumType_t ForumType,
@@ -720,7 +720,7 @@ void For_ShowPostsOfAThread (struct For_Forums *Forums,
    For_GetThreadData (&Thread);
 
    /***** Get if there is a thread ready to be moved *****/
-   if (For_CheckIfICanMoveThreads ())
+   if (For_CheckIfICanMoveThreads () == Usr_I_CAN)
       Forums->Thread.ToMove = For_DB_GetThrInMyClipboard ();
 
    /***** Get thread read time for the current user *****/
@@ -871,7 +871,7 @@ static void For_PutIconsOneThread (void *Forums)
 
       /***** Put icon to get resource link *****/
       if (((struct For_Forums *) Forums)->Forum.Type == For_FORUM_COURSE_USRS &&
-          Rsc_CheckIfICanGetLink ())
+          Rsc_CheckIfICanGetLink () == Usr_I_CAN)
 	 Ico_PutContextualIconToGetLink (ActReqLnkForCrsUsr,NULL,
 					 For_PutParsNewPost,Forums);
      }
@@ -1233,7 +1233,7 @@ void For_ShowForumList (struct For_Forums *Forums)
    bool ICanSeeDegForum;
 
    /***** Get if there is a thread ready to be moved *****/
-   if (For_CheckIfICanMoveThreads ())
+   if (For_CheckIfICanMoveThreads () == Usr_I_CAN)
       Forums->Thread.ToMove = For_DB_GetThrInMyClipboard ();
 
    /***** Fill the list with the institutions I belong to *****/
@@ -2182,7 +2182,7 @@ static void For_PutIconsThreads (void *Forums)
 
       /***** Put icon to get resource link *****/
       if (((struct For_Forums *) Forums)->Forum.Type == For_FORUM_COURSE_USRS &&
-          Rsc_CheckIfICanGetLink ())
+          Rsc_CheckIfICanGetLink () == Usr_I_CAN)
 	 Ico_PutContextualIconToGetLink (ActReqLnkForCrsUsr,NULL,
 					 For_PutParsNewPost,Forums);
      }
@@ -2232,10 +2232,10 @@ static void For_ListForumThrs (struct For_Forums *Forums,
    long ThreadInMyClipboard = -1L;
    unsigned Column;
    const char *BgColor;
-   bool ICanMoveThreads;
+   Usr_ICan_t ICanMoveThreads = For_CheckIfICanMoveThreads ();
 
    /***** Get if there is a thread ready to be moved *****/
-   if ((ICanMoveThreads = For_CheckIfICanMoveThreads ()))
+   if (ICanMoveThreads == Usr_I_CAN)
       ThreadInMyClipboard = For_DB_GetThrInMyClipboard ();
 
    /***** Initialize structure with user's data *****/
@@ -2288,7 +2288,7 @@ static void For_ListForumThrs (struct For_Forums *Forums,
 	      }
 
 	    /***** Put button to cut the thread for moving it to another forum *****/
-	    if (ICanMoveThreads)
+	    if (ICanMoveThreads == Usr_I_CAN)
 	      {
 	       HTM_BR ();
 	       Frm_BeginFormAnchor (For_ActionsCutThrFor[Forums->Forum.Type],
@@ -3238,9 +3238,10 @@ void For_PasteThread (void)
 /*********************** Check if I can move threads *************************/
 /*****************************************************************************/
 
-static bool For_CheckIfICanMoveThreads (void)
+static Usr_ICan_t For_CheckIfICanMoveThreads (void)
   {
-   return (Gbl.Usrs.Me.Role.Logged == Rol_SYS_ADM);	// If I have permission to move threads...
+   return (Gbl.Usrs.Me.Role.Logged == Rol_SYS_ADM) ? Usr_I_CAN :	// If I have permission to move threads...
+						     Usr_I_CAN_NOT;
   }
 
 /*****************************************************************************/

swad_game.c

@@ -113,8 +113,8 @@ extern struct Globals Gbl;
 
 static void Gam_ListAllGamesHeading (const struct Gam_Games *Games);
 
-static bool Gam_CheckIfICanEditGames (void);
+static Usr_ICan_t Gam_CheckIfICanEditGames (void);
-static bool Gam_CheckIfICanListGameQuestions (void);
+static Usr_ICan_t Gam_CheckIfICanListGameQuestions (void);
 static void Gam_PutIconsListingGames (void *Games);
 static void Gam_PutIconToCreateNewGame (struct Gam_Games *Games);
 static void Gam_PutParsToCreateNewGame (void *Games);
@@ -153,7 +153,7 @@ static void Gam_ListGameQuestions (struct Gam_Games *Games);
 static void Gam_ListOneOrMoreQuestionsForEdition (struct Gam_Games *Games,
 						  unsigned NumQsts,
                                                   MYSQL_RES *mysql_res,
-						  bool ICanEditQuestions);
+						  Usr_ICan_t ICanEditQuestions);
 
 static void Gam_PutIconToAddNewQuestions (void *Games);
 
@@ -163,7 +163,7 @@ static void Gam_FreeListsSelectedQuestions (struct Gam_Games *Games);
 static void Gam_ExchangeQuestions (long GamCod,
                                    unsigned QstIndTop,unsigned QstIndBottom);
 
-static bool Gam_CheckIfEditable (const struct Gam_Game *Game);
+static Usr_ICan_t Gam_CheckIfICanEditGame (const struct Gam_Game *Game);
 
 /*****************************************************************************/
 /*************************** Reset games context *****************************/
@@ -346,9 +346,9 @@ static void Gam_ListAllGamesHeading (const struct Gam_Games *Games)
 /************************ Check if I can edit games **************************/
 /*****************************************************************************/
 
-static bool Gam_CheckIfICanEditGames (void)
+static Usr_ICan_t Gam_CheckIfICanEditGames (void)
   {
-   static const bool ICanEditGames[Rol_NUM_ROLES] =
+   static bool ICanEditGames[Rol_NUM_ROLES] =
      {
       [Rol_TCH    ] = true,
       [Rol_SYS_ADM] = true,
@@ -361,13 +361,13 @@ static bool Gam_CheckIfICanEditGames (void)
 /**************** Check if I can list questions in games *********************/
 /*****************************************************************************/
 
-static bool Gam_CheckIfICanListGameQuestions (void)
+static Usr_ICan_t Gam_CheckIfICanListGameQuestions (void)
   {
-   static const bool ICanListGameQuestions[Rol_NUM_ROLES] =
+   static Usr_ICan_t ICanListGameQuestions[Rol_NUM_ROLES] =
      {
-      [Rol_NET    ] = true,
+      [Rol_NET    ] = Usr_I_CAN,
-      [Rol_TCH    ] = true,
+      [Rol_TCH    ] = Usr_I_CAN,
-      [Rol_SYS_ADM] = true,
+      [Rol_SYS_ADM] = Usr_I_CAN,
      };
 
    return ICanListGameQuestions[Gbl.Usrs.Me.Role.Logged];
@@ -390,7 +390,7 @@ static void Gam_PutIconsListingGames (void *Games)
    if (Games)
      {
       /***** Put icon to create a new game *****/
-      if (Gam_CheckIfICanEditGames ())
+      if (Gam_CheckIfICanEditGames () == Usr_I_CAN)
 	 Gam_PutIconToCreateNewGame ((struct Gam_Games *) Games);
 
       /***** Put icon to view matches results *****/
@@ -399,9 +399,8 @@ static void Gam_PutIconsListingGames (void *Games)
 					     NULL,NULL);
 
       /***** Link to get resource link *****/
-      if (Rsc_CheckIfICanGetLink ())
+      if (Rsc_CheckIfICanGetLink () == Usr_I_CAN)
-	 Ico_PutContextualIconToGetLink (ActReqLnkGam,NULL,
+	 Ico_PutContextualIconToGetLink (ActReqLnkGam,NULL,Gam_PutPars,Games);
-					 Gam_PutPars,Games);
 
       /***** Put icon to show a figure *****/
       Fig_PutIconToShowFigure (Fig_GAMES);
@@ -687,8 +686,7 @@ static void Gam_PutIconsEditingOneGame (void *Games)
   {
    if (Games)
       /***** Icon to view game *****/
-      Ico_PutContextualIconToView (ActLstOneGam,NULL,
+      Ico_PutContextualIconToView (ActLstOneGam,NULL,Gam_PutPars,Games);
-				   Gam_PutPars,Games);
   }
 
 /*****************************************************************************/
@@ -729,7 +727,7 @@ static void Gam_PutIconsToRemEditOneGame (struct Gam_Games *Games,
       [Rol_SYS_ADM] = ActSeeUsrMchResGam,
      };
 
-   if (Gam_CheckIfICanEditGames ())
+   if (Gam_CheckIfICanEditGames () == Usr_I_CAN)
      {
       /***** Icon to remove game *****/
       Ico_PutContextualIconToRemove (ActReqRemGam,NULL,
@@ -741,14 +739,12 @@ static void Gam_PutIconsToRemEditOneGame (struct Gam_Games *Games,
 					 Games->Game.HiddenOrVisible);
 
       /***** Icon to edit game *****/
-      Ico_PutContextualIconToEdit (ActEdiOneGam,NULL,
+      Ico_PutContextualIconToEdit (ActEdiOneGam,NULL,Gam_PutPars,Games);
-				   Gam_PutPars,Games);
      }
 
-   if (Gam_CheckIfICanListGameQuestions ())
+   if (Gam_CheckIfICanListGameQuestions () == Usr_I_CAN)
       /***** Icon to view game listing its questions *****/
-      Ico_PutContextualIconToView (ActLstOneGam,NULL,
+      Ico_PutContextualIconToView (ActLstOneGam,NULL,Gam_PutPars,Games);
-				   Gam_PutPars,Games);
 
    /***** Put icon to view matches results *****/
    if (ActionShowResults[Gbl.Usrs.Me.Role.Logged])
@@ -756,9 +752,8 @@ static void Gam_PutIconsToRemEditOneGame (struct Gam_Games *Games,
 					  Gam_PutPars,Games);
 
    /***** Link to get resource link *****/
-   if (Rsc_CheckIfICanGetLink ())
+   if (Rsc_CheckIfICanGetLink () == Usr_I_CAN)
-      Ico_PutContextualIconToGetLink (ActReqLnkGam,NULL,
+      Ico_PutContextualIconToGetLink (ActReqLnkGam,NULL,Gam_PutPars,Games);
-				      Gam_PutPars,Games);
 
   }
 
@@ -1054,7 +1049,7 @@ void Gam_AskRemGame (void)
 
    /***** Get data of the game from database *****/
    Gam_GetGameDataByCod (&Games.Game);
-   if (!Gam_CheckIfICanEditGames ())
+   if (Gam_CheckIfICanEditGames () == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Show question and button to remove game *****/
@@ -1087,7 +1082,7 @@ void Gam_RemoveGame (void)
 
    /***** Get data of the game from database *****/
    Gam_GetGameDataByCod (&Games.Game);
-   if (!Gam_CheckIfICanEditGames ())
+   if (Gam_CheckIfICanEditGames () == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Remove game from all tables *****/
@@ -1163,7 +1158,7 @@ static void Gam_HideUnhideGame (HidVis_HiddenOrVisible_t HiddenOrVisible)
 
    /***** Get data of the game from database *****/
    Gam_GetGameDataByCod (&Games.Game);
-   if (!Gam_CheckIfICanEditGames ())
+   if (Gam_CheckIfICanEditGames () == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Unhide game *****/
@@ -1189,7 +1184,7 @@ void Gam_ListGame (void)
    Gam_ResetGame (&Games.Game);
 
    /***** Check if I can list game questions *****/
-   if (!Gam_CheckIfICanListGameQuestions ())
+   if (Gam_CheckIfICanListGameQuestions () == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Get parameters *****/
@@ -1223,7 +1218,7 @@ void Gam_ReqCreatOrEditGame (void)
    Gam_ResetGame (&Games.Game);
 
    /***** Check if I can edit games *****/
-   if (!Gam_CheckIfICanEditGames ())
+   if (Gam_CheckIfICanEditGames () == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Get parameters *****/
@@ -1439,7 +1434,7 @@ void Gam_ReceiveGame (void)
    Gam_ResetGame (&Games.Game);
 
    /***** Check if I can edit games *****/
-   if (!Gam_CheckIfICanEditGames ())
+   if (Gam_CheckIfICanEditGames () == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Get parameters *****/
@@ -1568,7 +1563,7 @@ void Gam_ReqSelectQstsToAddToGame (void)
    Gam_GetGameDataByCod (&Games.Game);
 
    /***** Check if game has matches *****/
-   if (!Gam_CheckIfEditable (&Games.Game))
+   if (Gam_CheckIfICanEditGame (&Games.Game) == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Show form to create a new question in this game *****/
@@ -1600,7 +1595,7 @@ void Gam_ListQstsToAddToGame (void)
    Gam_GetGameDataByCod (&Games.Game);
 
    /***** Check if game has matches *****/
-   if (!Gam_CheckIfEditable (&Games.Game))
+   if (Gam_CheckIfICanEditGame (&Games.Game) == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** List several test questions for selection *****/
@@ -1640,17 +1635,17 @@ static void Gam_ListGameQuestions (struct Gam_Games *Games)
    extern const char *Txt_Questions;
    MYSQL_RES *mysql_res;
    unsigned NumQsts;
-   bool ICanEditQuestions = Gam_CheckIfEditable (&Games->Game);
+   Usr_ICan_t ICanEditQuestions = Gam_CheckIfICanEditGame (&Games->Game);
 
    /***** Get data of questions from database *****/
    NumQsts = Gam_DB_GetGameQuestionsBasic (&mysql_res,Games->Game.GamCod);
 
    /***** Begin box *****/
    Box_BoxBegin (Txt_Questions,
-		 ICanEditQuestions ? Gam_PutIconToAddNewQuestions :
+		 ICanEditQuestions == Usr_I_CAN ? Gam_PutIconToAddNewQuestions :
-				     NULL,
+						  NULL,
-		 ICanEditQuestions ? Games :
+		 ICanEditQuestions == Usr_I_CAN ? Games :
-				     NULL,
+						  NULL,
 		 Hlp_ASSESSMENT_Games_questions,Box_NOT_CLOSABLE);
 
       /***** Show table with questions *****/
@@ -1672,7 +1667,7 @@ static void Gam_ListGameQuestions (struct Gam_Games *Games)
 static void Gam_ListOneOrMoreQuestionsForEdition (struct Gam_Games *Games,
 						  unsigned NumQsts,
                                                   MYSQL_RES *mysql_res,
-						  bool ICanEditQuestions)
+						  Usr_ICan_t ICanEditQuestions)
   {
    extern const char *Txt_Questions;
    extern const char *Txt_No_INDEX;
@@ -1741,14 +1736,14 @@ static void Gam_ListOneOrMoreQuestionsForEdition (struct Gam_Games *Games,
 	    HTM_TD_Begin ("class=\"BT %s\"",The_GetColorRows ());
 
 	       /* Put icon to remove the question */
-	       if (ICanEditQuestions)
+	       if (ICanEditQuestions == Usr_I_CAN)
 		  Ico_PutContextualIconToRemove (ActReqRemGamQst,NULL,
 						 Gam_PutParsOneQst,Games);
 	       else
 		  Ico_PutIconRemovalNotAllowed ();
 
 	       /* Put icon to move up the question */
-	       if (ICanEditQuestions && QstInd > 1)
+	       if (ICanEditQuestions == Usr_I_CAN && QstInd > 1)
 		  Lay_PutContextualLinkOnlyIcon (ActUp_GamQst,Anchor,
 						 Gam_PutParsOneQst,Games,
 						 "arrow-up.svg",Ico_BLACK);
@@ -1757,7 +1752,7 @@ static void Gam_ListOneOrMoreQuestionsForEdition (struct Gam_Games *Games,
 		                  Txt_Movement_not_allowed);
 
 	       /* Put icon to move down the question */
-	       if (ICanEditQuestions && QstInd < MaxQstInd)
+	       if (ICanEditQuestions == Usr_I_CAN && QstInd < MaxQstInd)
 		  Lay_PutContextualLinkOnlyIcon (ActDwnGamQst,Anchor,
 						 Gam_PutParsOneQst,Games,
 						 "arrow-down.svg",Ico_BLACK);
@@ -1766,7 +1761,7 @@ static void Gam_ListOneOrMoreQuestionsForEdition (struct Gam_Games *Games,
 		                  Txt_Movement_not_allowed);
 
 	       /* Put icon to edit the question */
-	       if (ICanEditQuestions)
+	       if (ICanEditQuestions == Usr_I_CAN)
 		  Ico_PutContextualIconToEdit (ActEdiOneTstQst,NULL,
 					       Qst_PutParQstCod,&Question.QstCod);
 
@@ -1827,7 +1822,7 @@ void Gam_AddQstsToGame (void)
    Gam_GetGameDataByCod (&Games.Game);
 
    /***** Check if game has matches *****/
-   if (!Gam_CheckIfEditable (&Games.Game))
+   if (Gam_CheckIfICanEditGame (&Games.Game) == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Get selected questions *****/
@@ -1935,7 +1930,7 @@ void Gam_ReqRemQstFromGame (void)
    Gam_GetGameDataByCod (&Games.Game);
 
    /***** Check if game has matches *****/
-   if (!Gam_CheckIfEditable (&Games.Game))
+   if (Gam_CheckIfICanEditGame (&Games.Game) == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Get question index *****/
@@ -1977,7 +1972,7 @@ void Gam_RemoveQstFromGame (void)
    Gam_GetGameDataByCod (&Games.Game);
 
    /***** Check if game has matches *****/
-   if (!Gam_CheckIfEditable (&Games.Game))
+   if (Gam_CheckIfICanEditGame (&Games.Game) == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Get question index *****/
@@ -2026,7 +2021,7 @@ void Gam_MoveUpQst (void)
    Gam_GetGameDataByCod (&Games.Game);
 
    /***** Check if game has matches *****/
-   if (!Gam_CheckIfEditable (&Games.Game))
+   if (Gam_CheckIfICanEditGame (&Games.Game) == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Get question index *****/
@@ -2076,7 +2071,7 @@ void Gam_MoveDownQst (void)
    Gam_GetGameDataByCod (&Games.Game);
 
    /***** Check if game has matches *****/
-   if (!Gam_CheckIfEditable (&Games.Game))
+   if (Gam_CheckIfICanEditGame (&Games.Game) == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Get question index *****/
@@ -2155,13 +2150,14 @@ static void Gam_ExchangeQuestions (long GamCod,
 /*****************************************************************************/
 // Before calling this function, number of matches must be calculated
 
-static bool Gam_CheckIfEditable (const struct Gam_Game *Game)
+static Usr_ICan_t Gam_CheckIfICanEditGame (const struct Gam_Game *Game)
   {
-   if (Gam_CheckIfICanEditGames ())
+   if (Gam_CheckIfICanEditGames () == Usr_I_CAN)
       /***** Questions are editable only if game has no matches *****/
-      return Game->NumMchs == 0;	// Games with matches should not be edited
+      return Game->NumMchs == 0 ? Usr_I_CAN :	// Games with matches should not be edited
+				  Usr_I_CAN_NOT;
    else
-      return false;			// Questions are not editable
+      return Usr_I_CAN_NOT;			// Questions are not editable
   }
 
 /*****************************************************************************/

swad_group.c

@@ -66,20 +66,6 @@
 #define Grp_GROUPS_SECTION_ID		"grps"
 #define Grp_NEW_GROUP_SECTION_ID	"new_grp"
 
-static const bool Grp_ICanChangeGrps[Rol_NUM_ROLES] =
-  {
-   [Rol_UNK    ] = false,
-   [Rol_GST    ] = false,
-   [Rol_USR    ] = false,
-   [Rol_STD    ] = true,
-   [Rol_NET    ] = false,
-   [Rol_TCH    ] = true,
-   [Rol_DEG_ADM] = false,
-   [Rol_CTR_ADM] = false,
-   [Rol_INS_ADM] = false,
-   [Rol_SYS_ADM] = true,
-  };
-
 /*****************************************************************************/
 /************* External global variables from others modules *****************/
 /*****************************************************************************/
@@ -90,6 +76,8 @@ extern struct Globals Gbl;
 /***************************** Private prototypes ****************************/
 /*****************************************************************************/
 
+static Usr_ICan_t Grp_CheckIfICanChangeGrps (void);
+
 static void Grp_ReqEditGroupsInternal (Ale_AlertType_t AlertTypeGroupTypes,const char *AlertTextGroupTypes,
                                        Ale_AlertType_t AlertTypeGroups,const char *AlertTextGroups);
 static void Grp_ReqEditGroupsInternal0 (void);
@@ -143,6 +131,22 @@ static void Grp_WriteMaxStds (char Str[Cns_MAX_DECIMAL_DIGITS_UINT + 1],unsigned
 static void Grp_PutParGrpTypCod (void *GrpTypCod);
 static void Grp_PutParGrpCod (void *GrpCod);
 
+/*****************************************************************************/
+/************************ Check if I can change groups ***********************/
+/*****************************************************************************/
+
+static Usr_ICan_t Grp_CheckIfICanChangeGrps (void)
+  {
+   static Usr_ICan_t Grp_ICanChangeGrps[Rol_NUM_ROLES] =
+     {
+      [Rol_STD    ] = Usr_I_CAN,
+      [Rol_TCH    ] = Usr_I_CAN,
+      [Rol_SYS_ADM] = Usr_I_CAN,
+     };
+
+   return Grp_ICanChangeGrps[Gbl.Usrs.Me.Role.Logged];
+  }
+
 /*****************************************************************************/
 /******************* Write the names of the selected groups ******************/
 /*****************************************************************************/
@@ -624,7 +628,7 @@ void Grp_ChangeMyGrps (Cns_QuietOrVerbose_t QuietOrVerbose)
    bool ChangesMade;
 
    /***** Can I change my groups? *****/
-   if (Grp_ICanChangeGrps[Gbl.Usrs.Me.Role.Logged])
+   if (Grp_CheckIfICanChangeGrps () == Usr_I_CAN)
      {
       /***** Get list of groups types and groups in this course *****/
       Grp_GetListGrpTypesAndGrpsInThisCrs (Grp_ONLY_GROUP_TYPES_WITH_GROUPS);
@@ -683,7 +687,7 @@ void Grp_ChangeOtherUsrGrps (void)
    bool SelectionIsValid;
 
    /***** Can I change another user's groups? *****/
-   if (Grp_ICanChangeGrps[Gbl.Usrs.Me.Role.Logged])
+   if (Grp_CheckIfICanChangeGrps () == Usr_I_CAN)
      {
       /***** Get list of groups types and groups in current course *****/
       Grp_GetListGrpTypesAndGrpsInThisCrs (Grp_ONLY_GROUP_TYPES_WITH_GROUPS);
@@ -1340,8 +1344,7 @@ static void Grp_PutIconsEditingGroupTypes (__attribute__((unused)) void *Args)
 
 static void Grp_PutIconToViewGroups (void)
   {
-   Ico_PutContextualIconToView (ActReqSelGrp,NULL,
+   Ico_PutContextualIconToView (ActReqSelGrp,NULL,NULL,NULL);
-                                NULL,NULL);
   }
 
 /*****************************************************************************/
@@ -1773,8 +1776,7 @@ void Grp_ShowLstGrpsToChgMyGrps (void)
 
 static void Grp_PutIconToEditGroups (__attribute__((unused)) void *Args)
   {
-   Ico_PutContextualIconToEdit (ActReqEdiGrp,NULL,
+   Ico_PutContextualIconToEdit (ActReqEdiGrp,NULL,NULL,NULL);
-				NULL,NULL);
   }
 
 /*****************************************************************************/

swad_hierarchy.c

@@ -707,23 +707,23 @@ void Hie_GetAndWriteInsCtrDegAdminBy (long UsrCod,unsigned ColSpan)
 /****************** Check if I can edit hierarchy elements *******************/
 /*****************************************************************************/
 
-bool Hie_CheckIfICanEdit (void)
+Usr_ICan_t Hie_CheckIfICanEdit (void)
   {
    // Some admins can edit all hierarchy elements.
    // Any user can edit the elements he/she has created...
    // ...as long as they are in pending status.
-   static const bool ICanEdit[Rol_NUM_ROLES] =
+   static Usr_ICan_t ICanEdit[Rol_NUM_ROLES] =
      {
       /* Users who can edit */
-      [Rol_GST    ] = true,
+      [Rol_GST    ] = Usr_I_CAN,
-      [Rol_USR    ] = true,
+      [Rol_USR    ] = Usr_I_CAN,
-      [Rol_STD    ] = true,
+      [Rol_STD    ] = Usr_I_CAN,
-      [Rol_NET    ] = true,
+      [Rol_NET    ] = Usr_I_CAN,
-      [Rol_TCH    ] = true,
+      [Rol_TCH    ] = Usr_I_CAN,
-      [Rol_DEG_ADM] = true,
+      [Rol_DEG_ADM] = Usr_I_CAN,
-      [Rol_CTR_ADM] = true,
+      [Rol_CTR_ADM] = Usr_I_CAN,
-      [Rol_INS_ADM] = true,
+      [Rol_INS_ADM] = Usr_I_CAN,
-      [Rol_SYS_ADM] = true,
+      [Rol_SYS_ADM] = Usr_I_CAN,
      };
 
    return ICanEdit[Gbl.Usrs.Me.Role.Logged];

swad_hierarchy.h

@@ -49,7 +49,7 @@ void Hie_ResetHierarchy (void);
 
 void Hie_GetAndWriteInsCtrDegAdminBy (long UsrCod,unsigned ColSpan);
 
-bool Hie_CheckIfICanEdit (void);
+Usr_ICan_t Hie_CheckIfICanEdit (void);
 
 void Hie_WriteStatusCell (Hie_Status_t Status,
 			  const char *Class,const char *BgColor,

swad_holiday.c

@@ -44,17 +44,6 @@
 #include "swad_parameter.h"
 #include "swad_parameter_code.h"
 
-/*****************************************************************************/
-/****************************** Private constants ****************************/
-/*****************************************************************************/
-
-static const bool Hld_ICanEditHlds[Rol_NUM_ROLES] =
-  {
-   /* Users who can edit */
-   [Rol_INS_ADM] = true,
-   [Rol_SYS_ADM] = true,
-  };
-
 /*****************************************************************************/
 /************** External global variables from others modules ****************/
 /*****************************************************************************/
@@ -71,6 +60,8 @@ static struct Hld_Holiday *Hld_EditingHld = NULL;	// Static variable to keep the
 /***************************** Private prototypes ****************************/
 /*****************************************************************************/
 
+static Usr_ICan_t Hld_CheckIfICanEditHlds (void);
+
 static Hld_Order_t Hld_GetParHldOrder (void);
 static void Hld_PutIconsSeeHolidays (__attribute__((unused)) void *Args);
 static void Hld_PutIconsEditHolidays (__attribute__((unused)) void *Args);
@@ -93,6 +84,22 @@ static void Hld_PutHeadHolidays (void);
 static void Hld_EditingHolidayConstructor (void);
 static void Hld_EditingHolidayDestructor (void);
 
+/*****************************************************************************/
+/************************ Check if I can edit holidays ***********************/
+/*****************************************************************************/
+
+static Usr_ICan_t Hld_CheckIfICanEditHlds (void)
+  {
+   static Usr_ICan_t Hld_ICanEditHlds[Rol_NUM_ROLES] =
+     {
+      /* Users who can edit */
+      [Rol_INS_ADM] = Usr_I_CAN,
+      [Rol_SYS_ADM] = Usr_I_CAN,
+     };
+
+   return Hld_ICanEditHlds[Gbl.Usrs.Me.Role.Logged];
+  }
+
 /*****************************************************************************/
 /************************* Reset departments context *************************/
 /*****************************************************************************/
@@ -234,9 +241,8 @@ static Hld_Order_t Hld_GetParHldOrder (void)
 static void Hld_PutIconsSeeHolidays (__attribute__((unused)) void *Args)
   {
    /***** Edit holidays *****/
-   if (Hld_ICanEditHlds[Gbl.Usrs.Me.Role.Logged])
+   if (Hld_CheckIfICanEditHlds () == Usr_I_CAN)
-      Ico_PutContextualIconToEdit (ActEdiHld,NULL,
+      Ico_PutContextualIconToEdit (ActEdiHld,NULL,NULL,NULL);
-				   NULL,NULL);
 
    /***** View calendar *****/
    Cal_PutIconToSeeCalendar ();
@@ -245,8 +251,7 @@ static void Hld_PutIconsSeeHolidays (__attribute__((unused)) void *Args)
 static void Hld_PutIconsEditHolidays (__attribute__((unused)) void *Args)
   {
    /***** Put icon to view holidays *****/
-   Ico_PutContextualIconToView (ActSeeHld,NULL,
+   Ico_PutContextualIconToView (ActSeeHld,NULL,NULL,NULL);
-				NULL,NULL);
 
    /***** View calendar *****/
    Cal_PutIconToSeeCalendar ();

swad_institution.c

@@ -89,7 +89,7 @@ static void Ins_GetInstitDataFromRow (MYSQL_RES *mysql_res,
                                       bool GetNumUsrsWhoClaimToBelongToIns);
 
 static void Ins_ListInstitutionsForEdition (void);
-static bool Ins_CheckIfICanEdit (struct Hie_Node *Ins);
+static Usr_ICan_t Ins_CheckIfICanEdit (struct Hie_Node *Ins);
 
 static void Ins_UpdateInsNameDB (long InsCod,const char *FldName,const char *NewName);
 
@@ -331,7 +331,7 @@ static void Ins_ListInstitutions (void)
 static void Ins_PutIconsListingInstitutions (__attribute__((unused)) void *Args)
   {
    /***** Put icon to edit institutions *****/
-   if (Hie_CheckIfICanEdit ())
+   if (Hie_CheckIfICanEdit () == Usr_I_CAN)
       Ins_PutIconToEditInstitutions ();
 
    /***** Put icon to show a figure *****/
@@ -344,8 +344,7 @@ static void Ins_PutIconsListingInstitutions (__attribute__((unused)) void *Args)
 
 static void Ins_PutIconToEditInstitutions (void)
   {
-   Ico_PutContextualIconToEdit (ActEdiIns,NULL,
+   Ico_PutContextualIconToEdit (ActEdiIns,NULL,NULL,NULL);
-                                NULL,NULL);
   }
 
 /*****************************************************************************/
@@ -556,8 +555,7 @@ static void Ins_EditInstitutionsInternal (void)
 static void Ins_PutIconsEditingInstitutions (__attribute__((unused)) void *Args)
   {
    /***** Put icon to view institutions *****/
-   Ico_PutContextualIconToView (ActSeeIns,NULL,
+   Ico_PutContextualIconToView (ActSeeIns,NULL,NULL,NULL);
-				NULL,NULL);
 
    /***** Put icon to show a figure *****/
    Fig_PutIconToShowFigure (Fig_INSTITS);
@@ -884,7 +882,7 @@ static void Ins_ListInstitutionsForEdition (void)
    struct Hie_Node *Ins;
    char WWW[Cns_MAX_BYTES_WWW + 1];
    struct Usr_Data UsrDat;
-   bool ICanEdit;
+   Usr_ICan_t ICanEdit;
    unsigned NumCtrs;
    unsigned NumUsrsIns;
    unsigned NumUsrsInCrssOfIns;
@@ -920,7 +918,7 @@ static void Ins_ListInstitutionsForEdition (void)
 
 	    /* Put icon to remove institution */
 	    HTM_TD_Begin ("class=\"BT\"");
-	       if (!ICanEdit ||
+	       if (ICanEdit == Usr_I_CAN_NOT ||
 		   NumCtrs ||		// Institution has centers
 		   NumUsrsIns ||		// Institution has users
 		   NumUsrsInCrssOfIns)	// Institution has users
@@ -947,11 +945,12 @@ static void Ins_ListInstitutionsForEdition (void)
 	    Nam_ExistingShortAndFullNames (ActionRename,
 				           ParCod_OthHie,Ins->HieCod,
 				           Names,
-				           ICanEdit);	// Put form?
+				           ICanEdit == Usr_I_CAN ? Frm_PUT_FORM :
+				        			   Frm_DONT_PUT_FORM);
 
 	    /* Institution WWW */
 	    HTM_TD_Begin ("class=\"LT DAT_%s\"",The_GetSuffix ());
-	       if (ICanEdit)
+	       if (ICanEdit == Usr_I_CAN)
 		 {
 		  Frm_BeginForm (ActChgInsWWW);
 		     ParCod_PutPar (ParCod_OthHie,Ins->HieCod);
@@ -1014,11 +1013,12 @@ static void Ins_ListInstitutionsForEdition (void)
 /************ Check if I can edit, remove, etc. an institution ***************/
 /*****************************************************************************/
 
-static bool Ins_CheckIfICanEdit (struct Hie_Node *Ins)
+static Usr_ICan_t Ins_CheckIfICanEdit (struct Hie_Node *Ins)
   {
-   return Gbl.Usrs.Me.Role.Logged == Rol_SYS_ADM ||		// I am a superuser
+   return (Gbl.Usrs.Me.Role.Logged == Rol_SYS_ADM ||		// I am a superuser
-          ((Ins->Status & Hie_STATUS_BIT_PENDING) != 0 &&	// Institution is not yet activated
+           ((Ins->Status & Hie_STATUS_BIT_PENDING) != 0 &&	// Institution is not yet activated
-          Gbl.Usrs.Me.UsrDat.UsrCod == Ins->RequesterUsrCod);	// I am the requester
+           Gbl.Usrs.Me.UsrDat.UsrCod == Ins->RequesterUsrCod)) ? Usr_I_CAN :	// I am the requester
+        							 Usr_I_CAN_NOT;
   }
 
 /*****************************************************************************/
@@ -1041,12 +1041,14 @@ void Ins_RemoveInstitution (void)
    /***** Get data of the institution from database *****/
    Hie_GetDataByCod[Hie_INS] (Ins_EditingIns);
 
-   /***** Check if this institution has users *****/
+   /***** Check if I can edit this institution *****/
-   if (!Ins_CheckIfICanEdit (Ins_EditingIns))
+   if (Ins_CheckIfICanEdit (Ins_EditingIns) == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
-   else if (Hie_GetNumNodesInHieLvl (Hie_CTR,	// Number of centers...
+
-				     Hie_INS,	// ...in institution
+   /***** Check if this institution has centers or users *****/
-				     Ins_EditingIns->HieCod))
+   if (Hie_GetNumNodesInHieLvl (Hie_CTR,	// Number of centers...
+				Hie_INS,	// ...in institution
+				Ins_EditingIns->HieCod))
       // Institution has centers ==> don't remove
       Ale_CreateAlert (Ale_WARNING,NULL,
 	               Txt_To_remove_an_institution_you_must_first_remove_all_centers_and_users_in_the_institution);

swad_link.c

@@ -45,16 +45,6 @@
 #include "swad_parameter.h"
 #include "swad_parameter_code.h"
 
-/*****************************************************************************/
-/****************************** Private constants ****************************/
-/*****************************************************************************/
-
-static const bool Lnk_ICanEditLinks[Rol_NUM_ROLES] =
-  {
-   /* Users who can edit */
-   [Rol_SYS_ADM] = true,
-  };
-
 /*****************************************************************************/
 /************** External global variables from others modules ****************/
 /*****************************************************************************/
@@ -81,6 +71,8 @@ static struct Lnk_Link *Lnk_EditingLnk = NULL;	// Static variable to keep the li
 /***************************** Private prototypes ****************************/
 /*****************************************************************************/
 
+static Usr_ICan_t Lnk_CheckIfICanEditLinks (void);
+
 static void Lnk_PutIconsListingLinks (__attribute__((unused)) void *Args);
 static void Lnk_PutIconToEditLinks (void);
 static void Lnk_WriteListOfLinks (const struct Lnk_Links *Links,const char *Class);
@@ -104,6 +96,21 @@ static void Lnk_PutHeadLinks (void);
 static void Lnk_EditingLinkConstructor (void);
 static void Lnk_EditingLinkDestructor (void);
 
+/*****************************************************************************/
+/************************* Check if I can edit links *************************/
+/*****************************************************************************/
+
+static Usr_ICan_t Lnk_CheckIfICanEditLinks (void)
+  {
+   static bool Lnk_ICanEditLinks[Rol_NUM_ROLES] =
+     {
+      /* Users who can edit */
+      [Rol_SYS_ADM] = Usr_I_CAN,
+     };
+
+   return Lnk_ICanEditLinks[Gbl.Usrs.Me.Role.Logged];
+  }
+
 /*****************************************************************************/
 /****************************** List all links *******************************/
 /*****************************************************************************/
@@ -142,7 +149,7 @@ void Lnk_SeeLinks (void)
 static void Lnk_PutIconsListingLinks (__attribute__((unused)) void *Args)
   {
    /***** Put icon to edit links *****/
-   if (Lnk_ICanEditLinks[Gbl.Usrs.Me.Role.Logged])
+   if (Lnk_CheckIfICanEditLinks () == Usr_I_CAN)
       Lnk_PutIconToEditLinks ();
 
    /***** Put icon to view banners *****/
@@ -155,8 +162,7 @@ static void Lnk_PutIconsListingLinks (__attribute__((unused)) void *Args)
 
 static void Lnk_PutIconToEditLinks (void)
   {
-   Ico_PutContextualIconToEdit (ActEdiLnk,NULL,
+   Ico_PutContextualIconToEdit (ActEdiLnk,NULL,NULL,NULL);
-                                NULL,NULL);
   }
 
 /*****************************************************************************/
@@ -269,8 +275,7 @@ static void Lnk_EditLinksInternal (void)
 static void Lnk_PutIconsEditingLinks (__attribute__((unused)) void *Args)
   {
    /***** Put icon to view links *****/
-   Ico_PutContextualIconToView (ActSeeLnk,NULL,
+   Ico_PutContextualIconToView (ActSeeLnk,NULL,NULL,NULL);
-				NULL,NULL);
 
    /***** Put icon to view banners *****/
    Ban_PutIconToViewBanners ();
@@ -436,7 +441,7 @@ static void Lnk_ListLinksForEdition (const struct Lnk_Links *Links)
 	    Nam_ExistingShortAndFullNames (ActionRename,
 				           ParCod_Lnk,Lnk->LnkCod,
 				           Names,
-				           true);	// Put form
+				           Frm_PUT_FORM);
 
 	    /* Link WWW */
 	    HTM_TD_Begin ("class=\"LM\"");

swad_mail.c

@@ -217,8 +217,7 @@ static Mai_DomainsOrder_t Mai_GetParMaiOrder (void)
 
 static void Mai_PutIconToEditMailDomains (__attribute__((unused)) void *Args)
   {
-   Ico_PutContextualIconToEdit (ActEdiMai,NULL,
+   Ico_PutContextualIconToEdit (ActEdiMai,NULL,NULL,NULL);
-				NULL,NULL);
   }
 
 /*****************************************************************************/
@@ -793,7 +792,7 @@ static void Mai_PutFormToSelectUsrsToListEmails (__attribute__((unused)) void *A
 				     Txt_Email,
 				     Hlp_COMMUNICATION_Email,
 				     Txt_View_email_addresses,
-				     false);	// Do not put form with date range
+				     Frm_DONT_PUT_FORM);	// Do not put form with date range
   }
 
 /*****************************************************************************/
@@ -1298,7 +1297,7 @@ void Mai_RemoveOtherUsrEmail (void)
    /***** Get other user's code from form and get user's data *****/
    if (Usr_GetParOtherUsrCodEncryptedAndGetUsrData ())
      {
-      if (Usr_ICanEditOtherUsr (&Gbl.Usrs.Other.UsrDat))
+      if (Usr_CheckIfICanEditOtherUsr (&Gbl.Usrs.Other.UsrDat) == Usr_I_CAN)
 	{
 	 /***** Remove user's email *****/
 	 Mai_RemoveEmail (&Gbl.Usrs.Other.UsrDat);
@@ -1322,7 +1321,7 @@ static void Mai_RemoveEmail (struct Usr_Data *UsrDat)
    extern const char *Txt_Email_X_removed;
    char Email[Cns_MAX_BYTES_EMAIL_ADDRESS + 1];
 
-   if (Usr_ICanEditOtherUsr (UsrDat))
+   if (Usr_CheckIfICanEditOtherUsr (UsrDat) == Usr_I_CAN)
      {
       /***** Get new email from form *****/
       Par_GetParText ("Email",Email,Cns_MAX_BYTES_EMAIL_ADDRESS);
@@ -1364,7 +1363,7 @@ void Mai_ChangeOtherUsrEmail (void)
    /***** Get other user's code from form and get user's data *****/
    if (Usr_GetParOtherUsrCodEncryptedAndGetUsrData ())
      {
-      if (Usr_ICanEditOtherUsr (&Gbl.Usrs.Other.UsrDat))
+      if (Usr_CheckIfICanEditOtherUsr (&Gbl.Usrs.Other.UsrDat) == Usr_I_CAN)
 	{
 	 /***** Change user's ID *****/
 	 Mai_ChangeUsrEmail (&Gbl.Usrs.Other.UsrDat,
@@ -1392,7 +1391,7 @@ static void Mai_ChangeUsrEmail (struct Usr_Data *UsrDat,Usr_MeOrOther_t MeOrOthe
    extern const char *Txt_The_email_address_entered_X_is_not_valid;
    char NewEmail[Cns_MAX_BYTES_EMAIL_ADDRESS + 1];
 
-   if (Usr_ICanEditOtherUsr (UsrDat))
+   if (Usr_CheckIfICanEditOtherUsr (UsrDat) == Usr_I_CAN)
      {
       /***** Get new email from form *****/
       Par_GetParText ("NewEmail",NewEmail,Cns_MAX_BYTES_EMAIL_ADDRESS);

swad_match.c

@@ -103,10 +103,10 @@ static void Mch_ListOneOrMoreMatches (struct Gam_Games *Games,
       				      Frm_PutForm_t PutFormMatch,
 				      unsigned NumMatches,
                                       MYSQL_RES *mysql_res);
-static void Mch_ListOneOrMoreMatchesHeading (bool ICanEditMatches);
+static void Mch_ListOneOrMoreMatchesHeading (Usr_ICan_t ICanEditMatches);
-static bool Mch_CheckIfICanEditMatches (void);
+static Usr_ICan_t Mch_CheckIfICanEditMatches (void);
-static bool Mch_CheckIfICanEditThisMatch (const struct Mch_Match *Match);
+static Usr_ICan_t Mch_CheckIfICanEditThisMatch (const struct Mch_Match *Match);
-static bool Mch_CheckIfVisibilityOfResultsCanBeChanged (const struct Mch_Match *Match);
+static Usr_ICan_t Mch_CheckIfICanChangeVisibilityOfResults (const struct Mch_Match *Match);
 static void Mch_ListOneOrMoreMatchesIcons (struct Gam_Games *Games,
                                            const struct Mch_Match *Match,
                                            const char *Anchor);
@@ -284,7 +284,7 @@ void Mch_ListMatches (struct Gam_Games *Games,
                  Hlp_ASSESSMENT_Games_matches,Box_NOT_CLOSABLE);
 
       /***** Select whether show only my groups or all groups *****/
-      if (Gbl.Crs.Grps.NumGrps && Mch_CheckIfICanEditMatches ())
+      if (Gbl.Crs.Grps.NumGrps && Mch_CheckIfICanEditMatches () == Usr_I_CAN)
 	{
 	 Set_BeginSettingsHead ();
 	    Grp_ShowFormToSelWhichGrps (ActSeeOneGam,Gam_PutPars,Games);
@@ -328,15 +328,10 @@ void Mch_GetMatchDataByCod (struct Mch_Match *Match)
 
 static void Mch_PutIconsInListOfMatches (void *Games)
   {
-   bool ICanEditMatches;
-
    if (Games)
-     {
+      if (Mch_CheckIfICanEditMatches () == Usr_I_CAN)
-      /***** Put icon to create a new match in current game *****/
+         /***** Put icon to create a new match in current game *****/
-      ICanEditMatches = Mch_CheckIfICanEditMatches ();
-      if (ICanEditMatches)
 	 Mch_PutIconToCreateNewMatch ((struct Gam_Games *) Games);
-     }
   }
 
 /*****************************************************************************/
@@ -362,7 +357,7 @@ static void Mch_ListOneOrMoreMatches (struct Gam_Games *Games,
    unsigned UniqueId;
    struct Mch_Match Match;
    char *Anchor;
-   bool ICanEditMatches = Mch_CheckIfICanEditMatches ();
+   Usr_ICan_t ICanEditMatches = Mch_CheckIfICanEditMatches ();
    long MchCodToBeEdited = PutFormMatch == Frm_PUT_FORM &&
 			   Games->MchCod > 0 ? Games->MchCod :
 					       -1L;
@@ -385,7 +380,7 @@ static void Mch_ListOneOrMoreMatches (struct Gam_Games *Games,
 	 /***** Get match data from row *****/
 	 Mch_GetMatchDataFromRow (mysql_res,&Match);
 
-	 if (Mch_CheckIfICanPlayThisMatchBasedOnGrps (&Match))
+	 if (Mch_CheckIfICanPlayThisMatchBasedOnGrps (&Match) == Usr_I_CAN)
 	   {
 	    /***** Build anchor string *****/
 	    if (asprintf (&Anchor,"mch_%ld",Match.MchCod) < 0)
@@ -395,7 +390,7 @@ static void Mch_ListOneOrMoreMatches (struct Gam_Games *Games,
 	    HTM_TR_Begin (NULL);
 
 	       /* Icons */
-	       if (ICanEditMatches)
+	       if (ICanEditMatches == Usr_I_CAN)
 		  Mch_ListOneOrMoreMatchesIcons (Games,&Match,Anchor);
 
 	       /* Start/end date/time */
@@ -421,10 +416,11 @@ static void Mch_ListOneOrMoreMatches (struct Gam_Games *Games,
 	    HTM_TR_End ();
 
 	    /***** Third row for this match used for edition ****/
-	    if (ICanEditMatches && PutFormMatch == Frm_PUT_FORM &&	// Editing...
+	    if (ICanEditMatches == Usr_I_CAN &&
-		Match.MchCod == MchCodToBeEdited)			// ...this match
+		PutFormMatch == Frm_PUT_FORM &&		// Editing...
+		Match.MchCod == MchCodToBeEdited)	// ...this match
 	       /***** Check if I can edit this match *****/
-	       if (Mch_CheckIfICanEditThisMatch (&Match))
+	       if (Mch_CheckIfICanEditThisMatch (&Match) == Usr_I_CAN)
 		 {
 		  HTM_TR_Begin (NULL);
 		     HTM_TD_Begin ("colspan=\"7\" class=\"LT %s\"",
@@ -440,7 +436,8 @@ static void Mch_ListOneOrMoreMatches (struct Gam_Games *Games,
 	}
 
       /***** Put button to play a new match in this game *****/
-      if (ICanEditMatches && PutFormMatch == Frm_PUT_FORM &&
+      if (ICanEditMatches == Usr_I_CAN &&
+	  PutFormMatch == Frm_PUT_FORM &&
 	  MchCodToBeEdited <= 0)
 	{
 	 /* Reset match */
@@ -464,7 +461,7 @@ static void Mch_ListOneOrMoreMatches (struct Gam_Games *Games,
 /***************** Put a column for match start and end times ****************/
 /*****************************************************************************/
 
-static void Mch_ListOneOrMoreMatchesHeading (bool ICanEditMatches)
+static void Mch_ListOneOrMoreMatchesHeading (Usr_ICan_t ICanEditMatches)
   {
    extern const char *Txt_START_END_TIME[Dat_NUM_START_END_TIME];
    extern const char *Txt_Match;
@@ -476,7 +473,7 @@ static void Mch_ListOneOrMoreMatchesHeading (bool ICanEditMatches)
    HTM_TR_Begin (NULL);
 
       /***** Column for icons *****/
-      if (ICanEditMatches)
+      if (ICanEditMatches == Usr_I_CAN)
 	 HTM_TH_Empty (1);
 
       /***** The rest of columns *****/
@@ -497,13 +494,13 @@ static void Mch_ListOneOrMoreMatchesHeading (bool ICanEditMatches)
 /*********************** Check if I can edit matches *************************/
 /*****************************************************************************/
 
-static bool Mch_CheckIfICanEditMatches (void)
+static Usr_ICan_t Mch_CheckIfICanEditMatches (void)
   {
-   static const bool ICanEditMatches[Rol_NUM_ROLES] =
+   static Usr_ICan_t ICanEditMatches[Rol_NUM_ROLES] =
      {
-      [Rol_NET    ] = true,
+      [Rol_NET    ] = Usr_I_CAN,
-      [Rol_TCH    ] = true,
+      [Rol_TCH    ] = Usr_I_CAN,
-      [Rol_SYS_ADM] = true,
+      [Rol_SYS_ADM] = Usr_I_CAN,
      };
 
    return ICanEditMatches[Gbl.Usrs.Me.Role.Logged];
@@ -513,20 +510,21 @@ static bool Mch_CheckIfICanEditMatches (void)
 /***************** Check if I can edit (remove/resume) a match ***************/
 /*****************************************************************************/
 
-static bool Mch_CheckIfICanEditThisMatch (const struct Mch_Match *Match)
+static Usr_ICan_t Mch_CheckIfICanEditThisMatch (const struct Mch_Match *Match)
   {
    if (Match->MchCod <= 0)
-      return true;
+      return Usr_I_CAN;
 
    switch (Gbl.Usrs.Me.Role.Logged)
      {
       case Rol_NET:
-	 return (Match->UsrCod == Gbl.Usrs.Me.UsrDat.UsrCod);	// Only if I am the creator
+	 return (Match->UsrCod == Gbl.Usrs.Me.UsrDat.UsrCod) ? Usr_I_CAN :	// Only if I am the creator
+							       Usr_I_CAN_NOT;
       case Rol_TCH:
       case Rol_SYS_ADM:
-	 return true;
+	 return Usr_I_CAN;
       default:
-	 return false;
+	 return Usr_I_CAN_NOT;
      }
   }
 
@@ -534,14 +532,13 @@ static bool Mch_CheckIfICanEditThisMatch (const struct Mch_Match *Match)
 /*********** Check if visibility of match results can be changed *************/
 /*****************************************************************************/
 
-static bool Mch_CheckIfVisibilityOfResultsCanBeChanged (const struct Mch_Match *Match)
+static Usr_ICan_t Mch_CheckIfICanChangeVisibilityOfResults (const struct Mch_Match *Match)
   {
    if (Match->Status.ShowUsrResults ||		// Results are currently visible
        Match->Status.Showing == Mch_END)	// Match has finished
-      if (Mch_CheckIfICanEditThisMatch (Match))
+      return Mch_CheckIfICanEditThisMatch (Match);
-	 return true;
 
-   return false;
+   return Usr_I_CAN_NOT;
   }
 
 /*****************************************************************************/
@@ -554,17 +551,15 @@ static void Mch_ListOneOrMoreMatchesIcons (struct Gam_Games *Games,
   {
    HTM_TD_Begin ("rowspan=\"2\" class=\"BT %s\"",The_GetColorRows ());
 
-      if (Mch_CheckIfICanEditThisMatch (Match))
+      if (Mch_CheckIfICanEditThisMatch (Match) == Usr_I_CAN)
 	{
 	 Games->MchCod = Match->MchCod;
 
 	 /***** Put icon to remove the match *****/
-	 Ico_PutContextualIconToRemove (ActReqRemMch,NULL,
+	 Ico_PutContextualIconToRemove (ActReqRemMch,NULL,Mch_PutParsEdit,Games);
-					Mch_PutParsEdit,Games);
 
 	 /***** Put icon to edit the match *****/
-	 Ico_PutContextualIconToEdit (ActReqChgMch,Anchor,
+	 Ico_PutContextualIconToEdit (ActReqChgMch,Anchor,Mch_PutParsEdit,Games);
-				      Mch_PutParsEdit,Games);
 	}
       else
 	 Ico_PutIconRemovalNotAllowed ();
@@ -834,13 +829,13 @@ static void Mch_ListOneOrMoreMatchesResultTch (struct Gam_Games *Games,
    Games->MchCod = Match->MchCod;
 
    /***** Show match results *****/
-   if (Mch_CheckIfICanEditThisMatch (Match))
+   if (Mch_CheckIfICanEditThisMatch (Match) == Usr_I_CAN)
       Lay_PutContextualLinkOnlyIcon (ActSeeUsrMchResMch,MchRes_RESULTS_BOX_ID,
 				     Mch_PutParsEdit,Games,
 				     "trophy.svg",Ico_BLACK);
 
    /***** Check if visibility of session results can be changed *****/
-   if (Mch_CheckIfVisibilityOfResultsCanBeChanged (Match))
+   if (Mch_CheckIfICanChangeVisibilityOfResults (Match) == Usr_I_CAN)
      {
       /* I can edit visibility */
       if (Match->Status.ShowUsrResults)
@@ -880,7 +875,7 @@ void Mch_ToggleVisResultsMchUsr (void)
    Mch_GetAndCheckPars (&Games,&Match);
 
    /***** Check if visibility of match results can be changed *****/
-   if (!Mch_CheckIfVisibilityOfResultsCanBeChanged (&Match))
+   if (Mch_CheckIfICanChangeVisibilityOfResults (&Match) == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Toggle visibility of match results *****/
@@ -1028,7 +1023,7 @@ void Mch_RemoveMatch (void)
    Mch_GetAndCheckPars (&Games,&Match);
 
    /***** Check if I can remove this match *****/
-   if (!Mch_CheckIfICanEditThisMatch (&Match))
+   if (Mch_CheckIfICanEditThisMatch (&Match) == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Remove the match from all database tables *****/
@@ -1124,7 +1119,7 @@ void Mch_ReqCreatOrEditMatch (void)
    Mch_GetAndCheckPars (&Games,&Match);
 
    /***** Check if I can edit this match *****/
-   if (!Mch_CheckIfICanEditThisMatch (&Match))
+   if (Mch_CheckIfICanEditThisMatch (&Match) == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Show game *****/
@@ -1332,7 +1327,7 @@ void Mch_ChangeMatch (void)
    Mch_GetAndCheckPars (&Games,&Match);
 
    /***** Check if I can update this match *****/
-   if (!Mch_CheckIfICanEditThisMatch (&Match))
+   if (Mch_CheckIfICanEditThisMatch (&Match) == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Get match title and groups *****/
@@ -1390,7 +1385,7 @@ void Mch_ResumeMatch (void)
    Mch_GetMatchDataByCod (&Match);
 
    /***** Check if I have permission to resume match *****/
-   if (!Mch_CheckIfICanEditThisMatch (&Match))
+   if (Mch_CheckIfICanEditThisMatch (&Match) == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Update match status in database *****/
@@ -1987,7 +1982,7 @@ static void Mch_ShowMatchStatusForStd (struct Mch_Match *Match,Mch_Update_t Upda
    struct Mch_UsrAnswer UsrAnswer;
 
    /***** Can I play this match? *****/
-   if (!Mch_CheckIfICanPlayThisMatchBasedOnGrps (Match))
+   if (Mch_CheckIfICanPlayThisMatchBasedOnGrps (Match) == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Get student's answer to this question
@@ -2008,7 +2003,7 @@ static void Mch_ShowMatchStatusForStd (struct Mch_Match *Match,Mch_Update_t Upda
 /************ Check if I belong to any of the groups of a match **************/
 /*****************************************************************************/
 
-bool Mch_CheckIfICanPlayThisMatchBasedOnGrps (const struct Mch_Match *Match)
+Usr_ICan_t Mch_CheckIfICanPlayThisMatchBasedOnGrps (const struct Mch_Match *Match)
   {
    switch (Gbl.Usrs.Me.Role.Logged)
      {
@@ -2018,12 +2013,13 @@ bool Mch_CheckIfICanPlayThisMatchBasedOnGrps (const struct Mch_Match *Match)
 	 return Mch_DB_CheckIfICanPlayThisMatchBasedOnGrps (Match->MchCod);
       case Rol_NET:
 	 /***** Only if I am the creator *****/
-	 return (Match->UsrCod == Gbl.Usrs.Me.UsrDat.UsrCod);
+	 return (Match->UsrCod == Gbl.Usrs.Me.UsrDat.UsrCod) ? Usr_I_CAN :
+							       Usr_I_CAN_NOT;
       case Rol_TCH:
       case Rol_SYS_ADM:
-	 return true;
+	 return Usr_I_CAN;
       default:
-	 return false;
+	 return Usr_I_CAN_NOT;
      }
   }
 

swad_match.h

@@ -126,7 +126,7 @@ void Mch_ToggleVisResultsMchQst (void);
 void Mch_BackMatch (void);
 void Mch_ForwardMatch (void);
 
-bool Mch_CheckIfICanPlayThisMatchBasedOnGrps (const struct Mch_Match *Match);
+Usr_ICan_t Mch_CheckIfICanPlayThisMatchBasedOnGrps (const struct Mch_Match *Match);
 
 bool Mch_RegisterMeAsPlayerInMatch (struct Mch_Match *Match);
 

swad_match_database.c

@@ -569,7 +569,7 @@ unsigned Mch_DB_GetGrpNamesAssociatedToMatch (MYSQL_RES **mysql_res,long MchCod)
 /************ Check if I belong to any of the groups of a match **************/
 /*****************************************************************************/
 
-bool Mch_DB_CheckIfICanPlayThisMatchBasedOnGrps (long MchCod)
+Usr_ICan_t Mch_DB_CheckIfICanPlayThisMatchBasedOnGrps (long MchCod)
   {
    return
    DB_QueryEXISTS ("can not check if I can play a match",
@@ -588,7 +588,8 @@ bool Mch_DB_CheckIfICanPlayThisMatchBasedOnGrps (long MchCod)
 			     " WHERE grp_users.UsrCod=%ld"
 			       " AND grp_users.GrpCod=mch_groups.GrpCod)))",
 		   MchCod,
-		   Gbl.Usrs.Me.UsrDat.UsrCod);
+		   Gbl.Usrs.Me.UsrDat.UsrCod) ? Usr_I_CAN :
+						Usr_I_CAN_NOT;
   }
 
 /*****************************************************************************/

swad_match_database.h

@@ -66,7 +66,7 @@ void Mch_DB_AssociateGroupToMatch (long MchCod,long GrpCod);
 
 unsigned Mch_DB_GetGrpCodsAssociatedToMatch (MYSQL_RES **mysql_res,long MchCod);
 unsigned Mch_DB_GetGrpNamesAssociatedToMatch (MYSQL_RES **mysql_res,long MchCod);
-bool Mch_DB_CheckIfICanPlayThisMatchBasedOnGrps (long MchCod);
+Usr_ICan_t Mch_DB_CheckIfICanPlayThisMatchBasedOnGrps (long MchCod);
 
 void Mch_DB_RemoveGroup (long GrpCod);
 void Mch_DB_RemoveGroupsOfType (long GrpTypCod);

swad_match_result.c

@@ -63,8 +63,8 @@ extern struct Globals Gbl;
 
 struct MchRes_ICanView
   {
-   bool Result;
+   Usr_ICan_t Result;
-   bool Score;
+   Usr_ICan_t Score;
   };
 
 /*****************************************************************************/
@@ -304,7 +304,7 @@ static void MchRes_ListAllMchResultsInSelectedGames (struct Gam_Games *Games)
       if (Usr_ChkUsrCodAndGetAllUsrDataFromUsrCod (&Gbl.Usrs.Other.UsrDat,
                                                    Usr_DONT_GET_PREFS,
                                                    Usr_GET_ROLE_IN_CRS))
-	 if (Usr_CheckIfICanViewTstExaMchResult (&Gbl.Usrs.Other.UsrDat))
+	 if (Usr_CheckIfICanViewTstExaMchResult (&Gbl.Usrs.Other.UsrDat) == Usr_I_CAN)
 	   {
 	    /***** Show matches results *****/
 	    Gbl.Usrs.Other.UsrDat.Accepted = Enr_CheckIfUsrHasAcceptedInCurrentCrs (&Gbl.Usrs.Other.UsrDat);
@@ -335,7 +335,7 @@ static void MchRes_PutFormToSelUsrsToViewMchResults (__attribute__((unused)) voi
 				     Txt_Results,
 				     Hlp_ASSESSMENT_Games_results,
 				     Txt_View_results,
-				     false);	// Do not put form with date range
+				     Frm_DONT_PUT_FORM);	// Do not put form with date range
   }
 
 /*****************************************************************************/
@@ -395,7 +395,7 @@ static void MchRes_ListAllMchResultsInGam (struct Gam_Games *Games)
 	 if (Usr_ChkUsrCodAndGetAllUsrDataFromUsrCod (&Gbl.Usrs.Other.UsrDat,
 	                                              Usr_DONT_GET_PREFS,
 	                                              Usr_GET_ROLE_IN_CRS))
-	    if (Usr_CheckIfICanViewTstExaMchResult (&Gbl.Usrs.Other.UsrDat))
+	    if (Usr_CheckIfICanViewTstExaMchResult (&Gbl.Usrs.Other.UsrDat) == Usr_I_CAN)
 	      {
 	       /***** Show matches results *****/
 	       Gbl.Usrs.Other.UsrDat.Accepted = Enr_CheckIfUsrHasAcceptedInCurrentCrs (&Gbl.Usrs.Other.UsrDat);
@@ -467,7 +467,7 @@ static void MchRes_ListAllMchResultsInMch (struct Gam_Games *Games,long MchCod)
 	 if (Usr_ChkUsrCodAndGetAllUsrDataFromUsrCod (&Gbl.Usrs.Other.UsrDat,
 	                                              Usr_DONT_GET_PREFS,
 	                                              Usr_GET_ROLE_IN_CRS))
-	    if (Usr_CheckIfICanViewTstExaMchResult (&Gbl.Usrs.Other.UsrDat))
+	    if (Usr_CheckIfICanViewTstExaMchResult (&Gbl.Usrs.Other.UsrDat) == Usr_I_CAN)
 	      {
 	       /***** Show matches results *****/
 	       Gbl.Usrs.Other.UsrDat.Accepted = Enr_CheckIfUsrHasAcceptedInCurrentCrs (&Gbl.Usrs.Other.UsrDat);
@@ -778,7 +778,7 @@ static void MchRes_ShowMchResults (struct Gam_Games *Games,
 	 HTM_TD_End ();
 
 	 /* Accumulate questions and score */
-	 if (ICanView.Score)
+	 if (ICanView.Score == Usr_I_CAN)
 	   {
 	    NumTotalQsts.All      += Print.NumQsts.All;
 	    NumTotalQsts.NotBlank += Print.NumQsts.NotBlank;
@@ -789,7 +789,7 @@ static void MchRes_ShowMchResults (struct Gam_Games *Games,
 	 HTM_TD_Begin ("class=\"RT DAT_%s LINE_LEFT %s\"",
 	               The_GetSuffix (),
 	               The_GetColorRows ());
-	    if (ICanView.Score)
+	    if (ICanView.Score == Usr_I_CAN)
 	       HTM_Unsigned (Print.NumQsts.All);
 	    else
 	       Ico_PutIconNotVisible ();
@@ -799,7 +799,7 @@ static void MchRes_ShowMchResults (struct Gam_Games *Games,
 	 HTM_TD_Begin ("class=\"RT DAT_%s LINE_LEFT %s\"",
 	               The_GetSuffix (),
 	               The_GetColorRows ());
-	    if (ICanView.Score)
+	    if (ICanView.Score == Usr_I_CAN)
 	      {
 	       if (Print.NumQsts.NotBlank)
 		  HTM_Unsigned (Print.NumQsts.NotBlank);
@@ -815,7 +815,7 @@ static void MchRes_ShowMchResults (struct Gam_Games *Games,
 	               The_GetSuffix (),
 	               The_GetColorRows ());
 	    NumQstsBlank = Print.NumQsts.All - Print.NumQsts.NotBlank;
-	    if (ICanView.Score)
+	    if (ICanView.Score == Usr_I_CAN)
 	      {
 	       if (NumQstsBlank)
 		  HTM_Unsigned (NumQstsBlank);
@@ -830,7 +830,7 @@ static void MchRes_ShowMchResults (struct Gam_Games *Games,
 	 HTM_TD_Begin ("class=\"RT DAT_%s LINE_LEFT %s\"",
 	               The_GetSuffix (),
 	               The_GetColorRows ());
-	    if (ICanView.Score)
+	    if (ICanView.Score == Usr_I_CAN)
 	      {
 	       HTM_Double2Decimals (Print.Score);
 	       HTM_Txt ("/");
@@ -844,7 +844,7 @@ static void MchRes_ShowMchResults (struct Gam_Games *Games,
 	 HTM_TD_Begin ("class=\"RT DAT_%s %s\"",
 	               The_GetSuffix (),
 	               The_GetColorRows ());
-	    if (ICanView.Score)
+	    if (ICanView.Score == Usr_I_CAN)
 	       HTM_Double2Decimals (Print.NumQsts.All ? Print.Score /
 							(double) Print.NumQsts.All :
 							0.0);
@@ -856,7 +856,7 @@ static void MchRes_ShowMchResults (struct Gam_Games *Games,
 	 HTM_TD_Begin ("class=\"RT DAT_%s LINE_LEFT %s\"",
 	               The_GetSuffix (),
 	               The_GetColorRows ());
-	    if (ICanView.Score)
+	    if (ICanView.Score == Usr_I_CAN)
 	      {
 	       Grade = TstPrn_ComputeGrade (Print.NumQsts.All,Print.Score,Games->Game.MaxGrade);
 	       TstPrn_ShowGrade (Grade,Games->Game.MaxGrade);
@@ -869,7 +869,7 @@ static void MchRes_ShowMchResults (struct Gam_Games *Games,
 	 /* Link to show this result */
 	 HTM_TD_Begin ("class=\"RT LINE_LEFT %s\"",
 	               The_GetColorRows ());
-	    if (ICanView.Result)
+	    if (ICanView.Result == Usr_I_CAN)
 	      {
 	       Games->Game.GamCod = Match.GamCod;
 	       Games->MchCod      = Match.MchCod;
@@ -1084,7 +1084,7 @@ void MchRes_ShowOneMchResult (void)
 
    /***** Check if I can view this match result and score *****/
    MchRes_CheckIfICanViewMatchResult (&Games.Game,&Match,UsrDat->UsrCod,&ICanView);
-   if (!ICanView.Result)
+   if (ICanView.Result == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Get questions and user's answers of the match result from database *****/
@@ -1104,7 +1104,7 @@ void MchRes_ShowOneMchResult (void)
 						       Usr_DONT_GET_PREFS,
 						       Usr_GET_ROLE_IN_CRS))
 	    Err_WrongUserExit ();
-	 if (!Usr_CheckIfICanViewTstExaMchResult (UsrDat))
+	 if (Usr_CheckIfICanViewTstExaMchResult (UsrDat) == Usr_I_CAN_NOT)
 	    Err_NoPermissionExit ();
 
 	 /* Get if user has accepted enrolment */
@@ -1201,7 +1201,7 @@ void MchRes_ShowOneMchResult (void)
 
 	    HTM_TD_Begin ("class=\"LB DAT_%s\"",
 			  The_GetSuffix ());
-	       if (ICanView.Score)
+	       if (ICanView.Score == Usr_I_CAN)
 		 {
 		  HTM_STRONG_Begin ();
 		     HTM_Double2Decimals (Print.Score);
@@ -1225,7 +1225,7 @@ void MchRes_ShowOneMchResult (void)
 
 	    HTM_TD_Begin ("class=\"LB DAT_%s\"",
 			  The_GetSuffix ());
-	       if (ICanView.Score)
+	       if (ICanView.Score == Usr_I_CAN)
 		 {
 		  HTM_STRONG_Begin ();
 		     TstPrn_ComputeAndShowGrade (Print.NumQsts.All,Print.Score,Games.Game.MaxGrade);
@@ -1282,15 +1282,17 @@ static void MchRes_CheckIfICanViewMatchResult (const struct Gam_Game *Game,
 	 // Depends on visibility of game and result (eye icons)
 	 ICanView->Result = (Game->HiddenOrVisible == HidVis_VISIBLE &&	// The game is visible
 			     Match->Status.ShowUsrResults &&		// The results of the match are visible to users
-			     Usr_ItsMe (UsrCod) == Usr_ME);		// The result is mine
+			     Usr_ItsMe (UsrCod) == Usr_ME) ? Usr_I_CAN :	// The result is mine
+							     Usr_I_CAN_NOT;
 	 // Whether I belong or not to groups of match is not checked here...
 	 // ...because I should be able to see old matches made in old groups to which I belonged
 
-	 if (ICanView->Result)
+	 if (ICanView->Result == Usr_I_CAN)
 	    // Depends on 5 visibility icons associated to game
-	    ICanView->Score = TstVis_IsVisibleTotalScore (Game->Visibility);
+	    ICanView->Score = TstVis_IsVisibleTotalScore (Game->Visibility) ? Usr_I_CAN :
+									      Usr_I_CAN_NOT;
 	 else
-	    ICanView->Score = false;
+	    ICanView->Score = Usr_I_CAN_NOT;
 	 break;
       case Rol_NET:
       case Rol_TCH:
@@ -1299,11 +1301,11 @@ static void MchRes_CheckIfICanViewMatchResult (const struct Gam_Game *Game,
       case Rol_INS_ADM:
       case Rol_SYS_ADM:
 	 ICanView->Result =
-	 ICanView->Score  = true;
+	 ICanView->Score  = Usr_I_CAN;
 	 break;
       default:
 	 ICanView->Result =
-	 ICanView->Score  = false;
+	 ICanView->Score  = Usr_I_CAN_NOT;
 	 break;
      }
   }

swad_nickname.c

@@ -424,7 +424,7 @@ void Nck_RemoveOtherUsrNick (void)
    /***** Get user whose nick must be removed *****/
    if (Usr_GetParOtherUsrCodEncryptedAndGetUsrData ())
      {
-      if (Usr_ICanEditOtherUsr (&Gbl.Usrs.Other.UsrDat))
+      if (Usr_CheckIfICanEditOtherUsr (&Gbl.Usrs.Other.UsrDat) == Usr_I_CAN)
 	{
 	 /***** Get nickname from form *****/
 	 Par_GetParText ("Nick",NickWithoutArr,
@@ -470,7 +470,7 @@ void Nck_ChangeOtherUsrNick (void)
    /***** Get user whose nick must be changed *****/
    if (Usr_GetParOtherUsrCodEncryptedAndGetUsrData ())
      {
-      if (Usr_ICanEditOtherUsr (&Gbl.Usrs.Other.UsrDat))
+      if (Usr_CheckIfICanEditOtherUsr (&Gbl.Usrs.Other.UsrDat) == Usr_I_CAN)
 	{
 	 /***** Update user's nickname *****/
 	 Nck_ChangeUsrNick (&Gbl.Usrs.Other.UsrDat);

swad_notice.c

@@ -78,7 +78,7 @@ static unsigned Not_MaxCharsURLOnScreen[Not_NUM_TYPES_LISTING] =
 
 static void Not_PutLinkToRSSFile (void);
 
-static bool Not_CheckIfICanEditNotices (void);
+static Usr_ICan_t Not_CheckIfICanEditNotices (void);
 static void Not_PutIconsListNotices (__attribute__((unused)) void *Args);
 static void Not_PutIconToAddNewNotice (void);
 static void Not_GetDataAndShowNotice (long NotCod);
@@ -401,10 +401,11 @@ static void Not_PutLinkToRSSFile (void)
 /*********************** Check if I can edit notices *************************/
 /*****************************************************************************/
 
-static bool Not_CheckIfICanEditNotices (void)
+static Usr_ICan_t Not_CheckIfICanEditNotices (void)
   {
-   return Gbl.Usrs.Me.Role.Logged == Rol_TCH ||
+   return (Gbl.Usrs.Me.Role.Logged == Rol_TCH ||
-	  Gbl.Usrs.Me.Role.Logged == Rol_SYS_ADM;
+	   Gbl.Usrs.Me.Role.Logged == Rol_SYS_ADM) ? Usr_I_CAN :
+						     Usr_I_CAN_NOT;
   }
 
 /*****************************************************************************/
@@ -414,7 +415,7 @@ static bool Not_CheckIfICanEditNotices (void)
 static void Not_PutIconsListNotices (__attribute__((unused)) void *Args)
   {
    /***** Put icon to add a new notice *****/
-   if (Not_CheckIfICanEditNotices ())
+   if (Not_CheckIfICanEditNotices () == Usr_I_CAN)
       Not_PutIconToAddNewNotice ();
 
    /***** Put icon to show a figure *****/
@@ -551,7 +552,7 @@ static void Not_DrawANotice (Not_Listing_t TypeNoticesListing,
       /***** Write the date in the top part of the yellow note *****/
       /* Write symbol to indicate if notice is obsolete or active */
       if (TypeNoticesListing == Not_LIST_FULL_NOTICES)
-	 if (Not_CheckIfICanEditNotices ())
+	 if (Not_CheckIfICanEditNotices () == Usr_I_CAN)
 	   {
 	    /***** Icon to remove announcement *****/
 	    Ico_PutContextualIconToRemove (ActReqRemNot,NULL,

swad_password.c

@@ -177,7 +177,7 @@ void Pwd_UpdateOtherUsrPwd (void)
    /***** Get other user's code from form and get user's data *****/
    if (Usr_GetParOtherUsrCodEncryptedAndGetUsrData ())
      {
-      if (Usr_ICanEditOtherUsr (&Gbl.Usrs.Other.UsrDat))
+      if (Usr_CheckIfICanEditOtherUsr (&Gbl.Usrs.Other.UsrDat) == Usr_I_CAN)
          /***** Check and update password *****/
 	 Pwd_CheckAndUpdateNewPwd (&Gbl.Usrs.Other.UsrDat);
       else

swad_photo.c

@@ -141,11 +141,11 @@ static void Pho_ComputePhotoSize (const struct Pho_DegPhotos *DegPhotos,
 /************** Check if I can change the photo of another user **************/
 /*****************************************************************************/
 
-bool Pho_ICanChangeOtherUsrPhoto (struct Usr_Data *UsrDat)
+Usr_ICan_t Pho_ICanChangeOtherUsrPhoto (struct Usr_Data *UsrDat)
   {
    /***** I can change my photo *****/
    if (Usr_ItsMe (UsrDat->UsrCod) == Usr_ME)
-      return true;
+      return Usr_I_CAN;
 
    /***** Check if I have permission to change user's photo *****/
    switch (Gbl.Usrs.Me.Role.Logged)
@@ -153,18 +153,19 @@ bool Pho_ICanChangeOtherUsrPhoto (struct Usr_Data *UsrDat)
       case Rol_TCH:
 	 /* A teacher can change the photo of confirmed students */
 	 if (UsrDat->Roles.InCurrentCrs != Rol_STD)	// Not a student
-            return false;
+            return Usr_I_CAN_NOT;
 
 	 /* It's a student in this course,
 	    check if he/she has accepted registration */
-         return (UsrDat->Accepted = Enr_CheckIfUsrHasAcceptedInCurrentCrs (UsrDat));
+         return (UsrDat->Accepted = Enr_CheckIfUsrHasAcceptedInCurrentCrs (UsrDat)) ? Usr_I_CAN :
+										      Usr_I_CAN_NOT;
       case Rol_DEG_ADM:
       case Rol_CTR_ADM:
       case Rol_INS_ADM:
       case Rol_SYS_ADM:
-         return Usr_ICanEditOtherUsr (UsrDat);
+         return Usr_CheckIfICanEditOtherUsr (UsrDat);
       default:
-	 return false;
+	 return Usr_I_CAN_NOT;
      }
   }
 
@@ -198,7 +199,7 @@ void Pho_PutIconToChangeUsrPhoto (struct Usr_Data *UsrDat)
 	 break;
       case Usr_OTHER:
       default:
-	 if (Pho_ICanChangeOtherUsrPhoto (UsrDat))
+	 if (Pho_ICanChangeOtherUsrPhoto (UsrDat) == Usr_I_CAN)
 	    Lay_PutContextualLinkOnlyIcon (NextAction[UsrDat->Roles.InCurrentCrs],NULL,
 					   Rec_PutParUsrCodEncrypted,NULL,
 					   "camera.svg",Ico_BLACK);
@@ -354,7 +355,7 @@ void Pho_SendPhotoUsr (void)
      }
 
    /***** Check if I have permission to change user's photo *****/
-   if (!Pho_ICanChangeOtherUsrPhoto (&Gbl.Usrs.Other.UsrDat))
+   if (Pho_ICanChangeOtherUsrPhoto (&Gbl.Usrs.Other.UsrDat) == Usr_I_CAN_NOT)
      {
       Ale_ShowAlertUserNotFoundOrYouDoNotHavePermission ();
       return;
@@ -521,7 +522,7 @@ void Pho_ReqRemUsrPhoto (void)
                                                 Usr_DONT_GET_PREFS,
                                                 Usr_DONT_GET_ROLE_IN_CRS))
      {
-      if (Pho_ICanChangeOtherUsrPhoto (&Gbl.Usrs.Other.UsrDat))
+      if (Pho_ICanChangeOtherUsrPhoto (&Gbl.Usrs.Other.UsrDat) == Usr_I_CAN)
 	{
 	 /***** Show current photo and help message *****/
 	 if (Pho_BuildLinkToPhoto (&Gbl.Usrs.Other.UsrDat,PhotoURL))
@@ -991,14 +992,9 @@ void Pho_ShowUsrPhotoIfAllowed (struct Usr_Data *UsrDat,
 bool Pho_ShowingUsrPhotoIsAllowed (struct Usr_Data *UsrDat,
                                    char PhotoURL[Cns_MAX_BYTES_WWW + 1])
   {
-   bool ICanSeePhoto;
-
-   /***** Check if I can see the other's photo *****/
-   ICanSeePhoto = Pri_ShowingIsAllowed (UsrDat->PhotoVisibility,UsrDat);
-
    /***** Photo is shown if I can see it, and it exists *****/
-   return ICanSeePhoto ? Pho_BuildLinkToPhoto (UsrDat,PhotoURL) :
+   return (Pri_CheckIfICanView (UsrDat->PhotoVisibility,UsrDat) == Usr_I_CAN) ? Pho_BuildLinkToPhoto (UsrDat,PhotoURL) :
-	                 false;
+									        false;
   }
 
 /*****************************************************************************/

swad_photo.h

@@ -95,7 +95,7 @@ struct Pho_DegPhotos
 /***************************** Public prototypes *****************************/
 /*****************************************************************************/
 
-bool Pho_ICanChangeOtherUsrPhoto (struct Usr_Data *UsrDat);
+Usr_ICan_t Pho_ICanChangeOtherUsrPhoto (struct Usr_Data *UsrDat);
 void Pho_PutIconToChangeUsrPhoto (struct Usr_Data *UsrDat);
 void Pho_ReqMyPhoto (void);
 void Pho_SendPhotoUsr (void);

swad_place.c

@@ -45,17 +45,6 @@
 #include "swad_place.h"
 #include "swad_place_database.h"
 
-/*****************************************************************************/
-/****************************** Private constants ****************************/
-/*****************************************************************************/
-
-static const bool Plc_ICanEditPlaces[Rol_NUM_ROLES] =
-  {
-   /* Users who can edit */
-   [Rol_INS_ADM] = true,
-   [Rol_SYS_ADM] = true,
-  };
-
 /*****************************************************************************/
 /************** External global variables from others modules ****************/
 /*****************************************************************************/
@@ -72,6 +61,8 @@ static struct Plc_Place *Plc_EditingPlc = NULL;	// Static variable to keep the p
 /***************************** Private prototypes ****************************/
 /*****************************************************************************/
 
+static bool Plc_CheckIfICanEditPlaces (void);
+
 static Plc_Order_t Plc_GetParPlcOrder (void);
 static void Plc_PutIconsListingPlaces (__attribute__((unused)) void *Args);
 static void Plc_PutIconToEditPlaces (void);
@@ -91,6 +82,22 @@ static void Plc_PutHeadPlaces (void);
 static void Plc_EditingPlaceConstructor (void);
 static void Plc_EditingPlaceDestructor (void);
 
+/*****************************************************************************/
+/************************* Check if I can edit places ************************/
+/*****************************************************************************/
+
+static bool Plc_CheckIfICanEditPlaces (void)
+  {
+   static bool Plc_ICanEditPlaces[Rol_NUM_ROLES] =
+     {
+      /* Users who can edit */
+      [Rol_INS_ADM] = true,
+      [Rol_SYS_ADM] = true,
+     };
+
+   return Plc_ICanEditPlaces[Gbl.Usrs.Me.Role.Logged];
+  }
+
 /*****************************************************************************/
 /**************************** Reset places context ***************************/
 /*****************************************************************************/
@@ -231,7 +238,7 @@ static Plc_Order_t Plc_GetParPlcOrder (void)
 static void Plc_PutIconsListingPlaces (__attribute__((unused)) void *Args)
   {
    /***** Put icon to edit places *****/
-   if (Plc_ICanEditPlaces[Gbl.Usrs.Me.Role.Logged])
+   if (Plc_CheckIfICanEditPlaces ())
       Plc_PutIconToEditPlaces ();
   }
 
@@ -241,8 +248,7 @@ static void Plc_PutIconsListingPlaces (__attribute__((unused)) void *Args)
 
 static void Plc_PutIconToEditPlaces (void)
   {
-   Ico_PutContextualIconToEdit (ActEdiPlc,NULL,
+   Ico_PutContextualIconToEdit (ActEdiPlc,NULL,NULL,NULL);
-                                NULL,NULL);
   }
 
 /*****************************************************************************/
@@ -298,8 +304,7 @@ static void Plc_EditPlacesInternal (void)
 static void Plc_PutIconsEditingPlaces (__attribute__((unused)) void *Args)
   {
    /***** Put icon to view places *****/
-   Ico_PutContextualIconToView (ActSeePlc,NULL,
+   Ico_PutContextualIconToView (ActSeePlc,NULL,NULL,NULL);
-				NULL,NULL);
   }
 
 /*****************************************************************************/
@@ -467,7 +472,7 @@ static void Plc_ListPlacesForEdition (const struct Plc_Places *Places)
 	    Nam_ExistingShortAndFullNames (ActionRename,
 					   ParCod_Plc,Plc->PlcCod,
 					   Names,
-					   true);	// Put form
+					   Frm_PUT_FORM);
 
 	    /* Number of centers */
 	    HTM_TD_Unsigned (Plc->NumCtrs);

swad_plugin.c

@@ -184,8 +184,7 @@ void Plg_ListPlugins (void)
 
 static void Plg_PutIconToEditPlugins (__attribute__((unused)) void *Args)
   {
-   Ico_PutContextualIconToEdit (ActEdiPlg,NULL,
+   Ico_PutContextualIconToEdit (ActEdiPlg,NULL,NULL,NULL);
-				NULL,NULL);
   }
 
 /*****************************************************************************/
@@ -194,8 +193,7 @@ static void Plg_PutIconToEditPlugins (__attribute__((unused)) void *Args)
 
 static void Plg_PutIconToViewPlugins (__attribute__((unused)) void *Args)
   {
-   Ico_PutContextualIconToView (ActSeePlg,NULL,
+   Ico_PutContextualIconToView (ActSeePlg,NULL,NULL,NULL);
-				NULL,NULL);
   }
 
 /*****************************************************************************/

swad_privacy.c

@@ -246,40 +246,43 @@ Pri_Visibility_t Pri_GetParVisibility (const char *ParName,
   }
 
 /*****************************************************************************/
-/*********** Check if user's photo of public profile can be shown ************/
+/*********** Check if user's photo or public profile can be shown ************/
 /*****************************************************************************/
-// Returns true if it can be shown and false if not.
 
-bool Pri_ShowingIsAllowed (Pri_Visibility_t Visibility,struct Usr_Data *UsrDat)
+Usr_ICan_t Pri_CheckIfICanView (Pri_Visibility_t Visibility,
+				struct Usr_Data *UsrDat)
   {
    /***** I always can see my things *****/
    if (Usr_ItsMe (UsrDat->UsrCod) == Usr_ME)
-      return true;
+      return Usr_I_CAN;
 
    /***** System admins always can see others' profiles *****/
    if (Gbl.Usrs.Me.Role.Logged == Rol_SYS_ADM)
-      return true;
+      return Usr_I_CAN;
 
    /***** Check if I can see the other's photo *****/
    switch (Visibility)
      {
       case Pri_VISIBILITY_UNKNOWN:
-	 return false;			// It's not me
+	 return Usr_I_CAN_NOT;		// It's not me
       case Pri_VISIBILITY_USER:		// Only visible
 					// by me and my teachers if I am a student
 					// or me and my students if I am a teacher
          // Do both users share the same course but whit different role?
-	 return Enr_DB_CheckIfUsrSharesAnyOfMyCrsWithDifferentRole (UsrDat->UsrCod);
+	 return Enr_DB_CheckIfUsrSharesAnyOfMyCrsWithDifferentRole (UsrDat->UsrCod) ? Usr_I_CAN :
+										      Usr_I_CAN_NOT;
       case Pri_VISIBILITY_COURSE:	// Visible by users sharing courses with me
 	 // Do both users share the same course?
-         return Enr_CheckIfUsrSharesAnyOfMyCrs (UsrDat);
+         return Enr_CheckIfUsrSharesAnyOfMyCrs (UsrDat) ? Usr_I_CAN :
+							  Usr_I_CAN_NOT;
       case Pri_VISIBILITY_SYSTEM:	// Visible by any user logged in platform
-         return Gbl.Usrs.Me.Logged;
+         return Gbl.Usrs.Me.Logged ? Usr_I_CAN :
+				     Usr_I_CAN_NOT;
       case Pri_VISIBILITY_WORLD:	// Public, visible by everyone, even unlogged visitors
-         return true;
+         return Usr_I_CAN;
      }
 
-   return false;	// Never reached. To avoid warning
+   return Usr_I_CAN_NOT;	// Never reached. To avoid warning
   }
 
 /*****************************************************************************/

swad_privacy.h

@@ -65,7 +65,7 @@ Pri_Visibility_t Pri_GetVisibilityFromStr (const char *Str);
 Pri_Visibility_t Pri_GetParVisibility (const char *ParName,
                                        unsigned MaskAllowedVisibility);
 
-bool Pri_ShowingIsAllowed (Pri_Visibility_t Visibility,struct Usr_Data *UsrDat);
+Usr_ICan_t Pri_CheckIfICanView (Pri_Visibility_t Visibility,struct Usr_Data *UsrDat);
 
 //-------------------------------- Figures ------------------------------------
 void Pri_GetAndShowNumUsrsPerPrivacy (void);

swad_profile.c

@@ -289,7 +289,7 @@ bool Prf_ShowUsrProfile (struct Usr_Data *UsrDat)
    Usr_MeOrOther_t MeOrOther = Usr_ItsMe (UsrDat->UsrCod);
 
    /***** Check if I can see the public profile *****/
-   if (Pri_ShowingIsAllowed (UsrDat->BaPrfVisibility,UsrDat))
+   if (Pri_CheckIfICanView (UsrDat->BaPrfVisibility,UsrDat) == Usr_I_CAN)
      {
       if (Gbl.Usrs.Me.Logged)
 	{
@@ -314,7 +314,7 @@ bool Prf_ShowUsrProfile (struct Usr_Data *UsrDat)
       Rec_ShowSharedUsrRecord (Rec_SHA_RECORD_PUBLIC,UsrDat,NULL);
 
       /***** Extended profile *****/
-      if (Pri_ShowingIsAllowed (UsrDat->ExPrfVisibility,UsrDat))
+      if (Pri_CheckIfICanView (UsrDat->ExPrfVisibility,UsrDat) == Usr_I_CAN)
         {
          /***** Show details of user's profile *****/
          Prf_ShowDetailsUserProfile (UsrDat);
@@ -1337,7 +1337,7 @@ static void Prf_ShowUsrInRanking (struct Usr_Data *UsrDat,unsigned Rank,
       [PhoSha_SHAPE_OVAL     ] = "PHOTOO30x40",
       [PhoSha_SHAPE_RECTANGLE] = "PHOTOR30x40",
      };
-   bool Visible = Pri_ShowingIsAllowed (UsrDat->BaPrfVisibility,UsrDat);
+   bool Visible = (Pri_CheckIfICanView (UsrDat->BaPrfVisibility,UsrDat) == Usr_I_CAN);
 
    HTM_TD_Begin ("class=\"RM %s_%s %s\"",
 		 Class[MeOrOther],

swad_program.c

@@ -323,10 +323,11 @@ void Prg_ShowAllItems (Prg_ListingType_t ListingType,
 /******************* Check if I can create program items *********************/
 /*****************************************************************************/
 
-bool Prg_CheckIfICanEditProgram (void)
+Usr_ICan_t Prg_CheckIfICanEditProgram (void)
   {
-   return Gbl.Usrs.Me.Role.Logged == Rol_TCH ||
+   return (Gbl.Usrs.Me.Role.Logged == Rol_TCH ||
-          Gbl.Usrs.Me.Role.Logged == Rol_SYS_ADM;
+           Gbl.Usrs.Me.Role.Logged == Rol_SYS_ADM) ? Usr_I_CAN :
+        					     Usr_I_CAN_NOT;
   }
 
 /*****************************************************************************/
@@ -336,7 +337,7 @@ bool Prg_CheckIfICanEditProgram (void)
 static void Prg_PutIconsListItems (__attribute__((unused)) void *Args)
   {
    /***** Put icon to edit program *****/
-   if (Prg_CheckIfICanEditProgram ())
+   if (Prg_CheckIfICanEditProgram () == Usr_I_CAN)
       Prg_PutIconToEditProgram ();
 
    /***** Put icon to show a figure *****/
@@ -352,7 +353,7 @@ static void Prg_PutIconsEditItems (__attribute__((unused)) void *Args)
    /***** Put icon to view program *****/
    Prg_PutIconToViewProgram ();
 
-   if (Prg_CheckIfICanEditProgram ())
+   if (Prg_CheckIfICanEditProgram () == Usr_I_CAN)
      {
       /***** Put icon to create a new program item *****/
       Prg_PutIconToCreateNewItem ();
@@ -371,8 +372,7 @@ static void Prg_PutIconsEditItems (__attribute__((unused)) void *Args)
 
 static void Prg_PutIconToEditProgram (void)
   {
-   Ico_PutContextualIconToEdit (ActEdiPrg,NULL,
+   Ico_PutContextualIconToEdit (ActEdiPrg,NULL,NULL,NULL);
-                                NULL,NULL);
   }
 
 /*****************************************************************************/
@@ -381,8 +381,7 @@ static void Prg_PutIconToEditProgram (void)
 
 static void Prg_PutIconToViewProgram (void)
   {
-   Ico_PutContextualIconToView (ActSeePrg,NULL,
+   Ico_PutContextualIconToView (ActSeePrg,NULL,NULL,NULL);
-                                NULL,NULL);
   }
 
 /*****************************************************************************/
@@ -403,8 +402,7 @@ static void Prg_PutIconToCreateNewItem (void)
 
 static void Prg_PutIconToViewResourceClipboard (void)
   {
-   Ico_PutContextualIconToViewClipboard (ActSeeRscCli_InPrg,NULL,
+   Ico_PutContextualIconToViewClipboard (ActSeeRscCli_InPrg,NULL,NULL,NULL);
-                                         NULL,NULL);
   }
 
 /*****************************************************************************/

swad_program.h

@@ -121,7 +121,7 @@ void Prg_EditCourseProgram (void);
 void Prg_ShowAllItems (Prg_ListingType_t ListingType,
                        long SelectedItmCod,long SelectedRscCod);
 
-bool Prg_CheckIfICanEditProgram (void);
+Usr_ICan_t Prg_CheckIfICanEditProgram (void);
 
 void Prg_PutParItmCod (void *ItmCod);
 void Prg_GetPars (struct Prg_Item *Item);

swad_program_resource.c

@@ -305,7 +305,7 @@ static void PrgRsc_PutIconsViewResources (void *ItmCod)
    /***** Put icon to create a new item resource *****/
    if (ItmCod)
       if (*(long *) ItmCod > 0)
-	 if (Prg_CheckIfICanEditProgram ())
+	 if (Prg_CheckIfICanEditProgram () == Usr_I_CAN)
 	    Ico_PutContextualIconToView (ActFrmSeePrgRsc,PrgRsc_RESOURCE_SECTION_ID,
 					 Prg_PutParItmCod,ItmCod);
   }
@@ -315,7 +315,7 @@ static void PrgRsc_PutIconsEditResources (void *ItmCod)
    /***** Put icon to create a new item resource *****/
    if (ItmCod)
       if (*(long *) ItmCod > 0)
-	 if (Prg_CheckIfICanEditProgram ())
+	 if (Prg_CheckIfICanEditProgram () == Usr_I_CAN)
 	    Ico_PutContextualIconToEdit (ActFrmEdiPrgRsc,PrgRsc_RESOURCE_SECTION_ID,
 					 Prg_PutParItmCod,ItmCod);
   }
@@ -895,7 +895,7 @@ static void PrgRsc_ShowClipboard (void)
 static void PrgRsc_PutIconsClipboard (__attribute__((unused)) void *Args)
   {
    /***** Put icon to remove resource clipboard in program *****/
-   if (Prg_CheckIfICanEditProgram ())
+   if (Prg_CheckIfICanEditProgram () == Usr_I_CAN)
       if (Rsc_DB_GetNumResourcesInClipboard ())	// Only if there are resources
 	 Ico_PutContextualIconToRemove (ActRemRscCli_InPrg,NULL,
 					NULL,NULL);

swad_project.c

@@ -189,7 +189,7 @@ static void Prj_ShowFormToFilterByWarning (const struct Prj_Projects *Projects);
 static void Prj_ShowFormToFilterByReview (const struct Prj_Projects *Projects);
 static void Prj_ShowFormToFilterByDpt (const struct Prj_Projects *Projects);
 
-static bool Prj_CheckIfICanViewProjectFiles (long PrjCod);
+static Usr_ICan_t Prj_CheckIfICanViewProjectFiles (long PrjCod);
 
 static void Prj_PutParAssign (unsigned Assign);
 static void Prj_PutParHidden (unsigned Hidden);
@@ -205,7 +205,7 @@ static Usr_Who_t Prj_GetParWho (void);
 
 static void Prj_ShowProjectsHead (struct Prj_Projects *Projects);
 static void Prj_ShowTableAllProjectsHead (void);
-static bool Prj_CheckIfICanCreateProjects (const struct Prj_Projects *Projects);
+static Usr_ICan_t Prj_CheckIfICanCreateProjects (const struct Prj_Projects *Projects);
 static void Prj_PutIconToCreateNewPrj (struct Prj_Projects *Projects);
 static void Prj_PutIconToShowAllData (struct Prj_Projects *Projects);
 
@@ -226,7 +226,7 @@ static void Prj_ShowReviewStatus (struct Prj_Projects *Projects,
                                   const struct Prj_Faults *Faults,
                                   const char *Anchor);
 static void Prj_PutSelectorReviewStatus (struct Prj_Projects *Projects);
-static bool Prj_CheckIfICanReviewProjects (void);
+static Usr_ICan_t Prj_CheckIfICanReviewProjects (void);
 static void Prj_ShowAssigned (const struct Prj_Projects *Projects,
                               const char *ClassLabel,
                               const char *ClassData,
@@ -288,7 +288,7 @@ static Prj_Order_t Prj_GetParPrjOrder (void);
 static void Prj_PutIconsToRemEditOnePrj (struct Prj_Projects *Projects,
                                          const char *Anchor);
 
-static bool Prj_CheckIfICanEditProject (const struct Prj_Project *Prj);
+static Usr_ICan_t Prj_CheckIfICanEditProject (const struct Prj_Project *Prj);
 
 static void Prj_GetListProjects (struct Prj_Projects *Projects);
 
@@ -317,8 +317,8 @@ static Prj_ReviewStatus_t Prj_GetParReviewStatus (void);
 static void Prj_ShowRubrics (struct Prj_Projects *Projects);
 static void Prj_ShowRubricsOfType (struct Prj_Projects *Projects,
                                    PrjCfg_RubricType_t RubricType);
-static bool Prj_CheckIfICanViewRubric (long PrjCod,PrjCfg_RubricType_t WhichRubric);
+static Usr_ICan_t Prj_CheckIfICanViewRubric (long PrjCod,PrjCfg_RubricType_t WhichRubric);
-static bool Prj_CheckIfICanFillRubric (long PrjCod,PrjCfg_RubricType_t WhichRubric);
+static Usr_ICan_t Prj_CheckIfICanFillRubric (long PrjCod,PrjCfg_RubricType_t WhichRubric);
 
 /*****************************************************************************/
 /******* Set/get project code (used to pass parameter to file browser) *******/
@@ -396,7 +396,7 @@ static void Prj_ReqUsrsToSelect (void *Projects)
 				     Txt_Projects,
 				     Hlp_ASSESSMENT_Projects,
 				     Txt_View_projects,
-				     false);	// Do not put form with date range
+				     Frm_DONT_PUT_FORM);	// Do not put form with date range
   }
 
 /*****************************************************************************/
@@ -864,18 +864,19 @@ static void Prj_ShowFormToFilterByDpt (const struct Prj_Projects *Projects)
 /******************** Can I view files of a given project? *******************/
 /*****************************************************************************/
 
-static bool Prj_CheckIfICanViewProjectFiles (long PrjCod)
+static Usr_ICan_t Prj_CheckIfICanViewProjectFiles (long PrjCod)
   {
    switch (Gbl.Usrs.Me.Role.Logged)
      {
       case Rol_STD:
       case Rol_NET:
-	 return (Prj_GetMyRolesInProject (PrjCod) != 0);	// Am I a member?
+	 return (Prj_GetMyRolesInProject (PrjCod) != 0) ? Usr_I_CAN :	// Am I a member?
+							  Usr_I_CAN_NOT;
       case Rol_TCH:	// Editing teachers in a course can access to all files
       case Rol_SYS_ADM:
-	 return true;
+	 return Usr_I_CAN;
       default:
-	 return false;
+	 return Usr_I_CAN_NOT;
      }
   }
 
@@ -883,41 +884,41 @@ static bool Prj_CheckIfICanViewProjectFiles (long PrjCod)
 /******** Check if I have permission to view project documents zone **********/
 /*****************************************************************************/
 
-bool Prj_CheckIfICanViewProjectDocuments (long PrjCod)
+Usr_ICan_t Prj_CheckIfICanViewProjectDocuments (long PrjCod)
   {
    switch (Gbl.Usrs.Me.Role.Logged)
      {
       case Rol_STD:
       case Rol_NET:
-	 return (Prj_GetMyRolesInProject (PrjCod) != 0);	// Am I a member?
+	 return (Prj_GetMyRolesInProject (PrjCod) != 0) ? Usr_I_CAN :	// Am I a member?
+							  Usr_I_CAN_NOT;
       case Rol_TCH:	// Editing teachers in a course can access to all files
       case Rol_SYS_ADM:
-         return true;
+         return Usr_I_CAN;
       default:
-         return false;
+         return Usr_I_CAN_NOT;
      }
-   return false;
   }
 
 /*****************************************************************************/
 /******** Check if I have permission to view project assessment zone *********/
 /*****************************************************************************/
 
-bool Prj_CheckIfICanViewProjectAssessment (long PrjCod)
+Usr_ICan_t Prj_CheckIfICanViewProjectAssessment (long PrjCod)
   {
    switch (Gbl.Usrs.Me.Role.Logged)
      {
       case Rol_STD:
       case Rol_NET:
-	 return ((Prj_GetMyRolesInProject (PrjCod) & (1 << Prj_ROLE_TUT |		// Tutor...
+	 return ((Prj_GetMyRolesInProject (PrjCod) & (1 << Prj_ROLE_TUT |			// Tutor...
-	                                              1 << Prj_ROLE_EVL)) != 0);	// ...or evaluator
+	                                              1 << Prj_ROLE_EVL)) != 0) ? Usr_I_CAN :	// ...or evaluator
+	                                        				  Usr_I_CAN_NOT;
       case Rol_TCH:	// Editing teachers in a course can access to all files
       case Rol_SYS_ADM:
-         return true;
+         return Usr_I_CAN;
       default:
-         return false;
+         return Usr_I_CAN_NOT;
      }
-   return false;
   }
 
 /*****************************************************************************/
@@ -1228,17 +1229,18 @@ static void Prj_ShowTableAllProjectsHead (void)
 /********************** Check if I can create projects ***********************/
 /*****************************************************************************/
 
-static bool Prj_CheckIfICanCreateProjects (const struct Prj_Projects *Projects)
+static Usr_ICan_t Prj_CheckIfICanCreateProjects (const struct Prj_Projects *Projects)
   {
    switch (Gbl.Usrs.Me.Role.Logged)
      {
       case Rol_NET:
-         return Projects->Config.NETCanCreate;
+         return Projects->Config.NETCanCreate ? Usr_I_CAN :
+						Usr_I_CAN_NOT;
       case Rol_TCH:
       case Rol_SYS_ADM:
-	 return true;
+	 return Usr_I_CAN;
       default:
-	 return false;
+	 return Usr_I_CAN_NOT;
      }
   }
 
@@ -1248,14 +1250,14 @@ static bool Prj_CheckIfICanCreateProjects (const struct Prj_Projects *Projects)
 
 void Prj_PutIconsListProjects (void *Projects)
   {
-   bool ICanConfigAllProjects;
+   Usr_ICan_t ICanConfigAllProjects;
 
    if (Projects)
      {
       ICanConfigAllProjects = PrjCfg_CheckIfICanConfig ();
 
       /***** Put icon to create a new project *****/
-      if (Prj_CheckIfICanCreateProjects ((struct Prj_Projects *) Projects))
+      if (Prj_CheckIfICanCreateProjects ((struct Prj_Projects *) Projects) == Usr_I_CAN)
 	 Prj_PutIconToCreateNewPrj ((struct Prj_Projects *) Projects);
 
       if (((struct Prj_Projects *) Projects)->Num)
@@ -1263,19 +1265,19 @@ void Prj_PutIconsListProjects (void *Projects)
 	 /***** Put icon to show all data in a table *****/
 	 Prj_PutIconToShowAllData ((struct Prj_Projects *) Projects);
 
-	 if (ICanConfigAllProjects)
+	 if (ICanConfigAllProjects == Usr_I_CAN)
 	    /****** Put icons to request locking/unlocking edition
 		    of all selected projects *******/
 	    Prj_PutIconsToLockUnlockAllProjects ((struct Prj_Projects *) Projects);
 	}
 
       /***** Put form to go to configuration of projects *****/
-      if (ICanConfigAllProjects)
+      if (ICanConfigAllProjects == Usr_I_CAN)
 	 Ico_PutContextualIconToConfigure (ActCfgPrj,NULL,
 	                                   NULL,NULL);
 
       /***** Link to get resource link *****/
-      if (Rsc_CheckIfICanGetLink ())
+      if (Rsc_CheckIfICanGetLink () == Usr_I_CAN)
 	 Ico_PutContextualIconToGetLink (ActReqLnkPrj,NULL,
 					 Prj_PutCurrentPars,Projects);
 
@@ -1360,7 +1362,7 @@ void Prj_ShowBoxWithOneProject (struct Prj_Projects *Projects)
       HTM_FIELDSET_End ();
 
       /***** Show project file browsers *****/
-      if (Prj_CheckIfICanViewProjectFiles (Projects->Prj.PrjCod))
+      if (Prj_CheckIfICanViewProjectFiles (Projects->Prj.PrjCod) == Usr_I_CAN)
 	 Brw_ShowFileBrowserProject (Projects->Prj.PrjCod);
 
       /***** Show project rubrics *****/
@@ -1516,8 +1518,13 @@ static void Prj_ShowFirstRow (struct Prj_Projects *Projects,
    extern const char *HidVis_DateBlueClass[HidVis_NUM_HIDDEN_VISIBLE];
    extern const char *HidVis_TitleClass[HidVis_NUM_HIDDEN_VISIBLE];
    extern const char *Txt_Actions[ActLst_NUM_ACTIONS];
-   char *Id;
+   static Act_Action_t NextActions[Usr_NUM_I_CAN] =
+     {
+      [Usr_I_CAN_NOT] = ActSeeOnePrj,
+      [Usr_I_CAN    ] = ActAdmDocPrj,
+     };
    Act_Action_t NextAction;
+   char *Id;
 
    /***** Write first row of data of this project *****/
    HTM_TR_Begin (NULL);
@@ -1614,8 +1621,7 @@ static void Prj_ShowFirstRow (struct Prj_Projects *Projects,
 	 HTM_ARTICLE_Begin (Anchor);
 	    if (Projects->Prj.Title[0])
 	      {
-	       NextAction = Prj_CheckIfICanViewProjectFiles (Projects->Prj.PrjCod) ? ActAdmDocPrj :
+	       NextAction = NextActions[Prj_CheckIfICanViewProjectFiles (Projects->Prj.PrjCod)];
-										     ActSeeOnePrj;
 	       Frm_BeginForm (NextAction);
 		  Prj_PutCurrentPars (Projects);
 		  HTM_BUTTON_Submit_Begin (Txt_Actions[NextAction],
@@ -1703,8 +1709,8 @@ static void Prj_ShowReviewStatus (struct Prj_Projects *Projects,
 	 PutForm = Frm_DONT_PUT_FORM;
 	 break;
       default:
-	 PutForm = Prj_CheckIfICanReviewProjects () ? Frm_PUT_FORM :
+	 PutForm = (Prj_CheckIfICanReviewProjects () == Usr_I_CAN) ? Frm_PUT_FORM :
-						      Frm_DONT_PUT_FORM;
+								     Frm_DONT_PUT_FORM;
 	 break;
      }
 
@@ -1869,12 +1875,12 @@ static void Prj_PutSelectorReviewStatus (struct Prj_Projects *Projects)
 /**************************** Can I review projects? *************************/
 /*****************************************************************************/
 
-static bool Prj_CheckIfICanReviewProjects (void)
+static Usr_ICan_t Prj_CheckIfICanReviewProjects (void)
   {
-   static bool ICanReviewProjects[Rol_NUM_ROLES] =
+   static Usr_ICan_t ICanReviewProjects[Rol_NUM_ROLES] =
      {
-      [Rol_TCH    ] = true,
+      [Rol_TCH    ] = Usr_I_CAN,
-      [Rol_SYS_ADM] = true,
+      [Rol_SYS_ADM] = Usr_I_CAN,
      };
 
    return ICanReviewProjects[Gbl.Usrs.Me.Role.Logged];
@@ -2877,7 +2883,7 @@ static void Prj_FormToSelectUsrs (struct Prj_Projects *Projects,
 				     TxtButton,
                                      Hlp_ASSESSMENT_Projects_add_user,
                                      TxtButton,
-				     false);	// Do not put form with date range
+				     Frm_DONT_PUT_FORM);	// Do not put form with date range
    free (TxtButton);
 
    /***** Put a form to create/edit project *****/
@@ -3045,7 +3051,7 @@ static void Prj_ReqRemUsrFromPrj (struct Prj_Projects *Projects,
    /***** Get user to be removed *****/
    if (Usr_GetParOtherUsrCodEncryptedAndGetUsrData ())
      {
-      if (Prj_CheckIfICanEditProject (&Projects->Prj))
+      if (Prj_CheckIfICanEditProject (&Projects->Prj) == Usr_I_CAN)
 	{
 	 /***** Show question and button to remove user as a role from project *****/
 	 /* Begin alert */
@@ -3123,7 +3129,7 @@ static void Prj_RemUsrFromPrj (Prj_RoleInProject_t RoleInPrj)
    /***** Get user to be removed *****/
    if (Usr_GetParOtherUsrCodEncryptedAndGetUsrData ())
      {
-      if (Prj_CheckIfICanEditProject (&Projects.Prj))
+      if (Prj_CheckIfICanEditProject (&Projects.Prj) == Usr_I_CAN)
 	{
 	 /***** Remove user from the table of project-users *****/
 	 Prj_DB_RemoveUsrFromPrj (Projects.Prj.PrjCod,RoleInPrj,Gbl.Usrs.Other.UsrDat.UsrCod);
@@ -3177,7 +3183,7 @@ static void Prj_PutIconsToRemEditOnePrj (struct Prj_Projects *Projects,
       [HidVis_VISIBLE] = ActHidPrj,	// Visible ==> action to hide
      };
 
-   if (Prj_CheckIfICanEditProject (&Projects->Prj))
+   if (Prj_CheckIfICanEditProject (&Projects->Prj) == Usr_I_CAN)
      {
       /***** Icon to remove project *****/
       Ico_PutContextualIconToRemove (ActReqRemPrj,NULL,
@@ -3190,11 +3196,11 @@ static void Prj_PutIconsToRemEditOnePrj (struct Prj_Projects *Projects,
 
       /***** Icon to edit project *****/
       Ico_PutContextualIconToEdit (ActEdiOnePrj,NULL,
-                                   Prj_PutCurrentPars,Projects);
+				   Prj_PutCurrentPars,Projects);
      }
 
    /***** Icon to admin project documents *****/
-   if (Prj_CheckIfICanViewProjectFiles (Projects->Prj.PrjCod))
+   if (Prj_CheckIfICanViewProjectFiles (Projects->Prj.PrjCod) == Usr_I_CAN)
       Ico_PutContextualIconToViewFiles (ActAdmDocPrj,
                                         Prj_PutCurrentPars,Projects);
 
@@ -3202,7 +3208,7 @@ static void Prj_PutIconsToRemEditOnePrj (struct Prj_Projects *Projects,
    Ico_PutContextualIconToPrint (ActPrnOnePrj,Prj_PutCurrentPars,Projects);
 
    /***** Locked/unlocked project edition *****/
-   if (PrjCfg_CheckIfICanConfig ())
+   if (PrjCfg_CheckIfICanConfig () == Usr_I_CAN)
      {
       /* Icon to lock/unlock project edition */
       HTM_DIV_Begin ("id=\"prj_lck_%ld\" class=\"PRJ_LOCK\"",
@@ -3215,7 +3221,7 @@ static void Prj_PutIconsToRemEditOnePrj (struct Prj_Projects *Projects,
       Prj_PutIconOffLockedUnlocked (&Projects->Prj);
 
    /***** Link to get resource link *****/
-   if (Rsc_CheckIfICanGetLink ())
+   if (Rsc_CheckIfICanGetLink () == Usr_I_CAN)
       Ico_PutContextualIconToGetLink (ActReqLnkPrj,NULL,
 				      Prj_PutCurrentPars,Projects);
   }
@@ -3224,20 +3230,21 @@ static void Prj_PutIconsToRemEditOnePrj (struct Prj_Projects *Projects,
 /************************ Can I edit a given project? ************************/
 /*****************************************************************************/
 
-static bool Prj_CheckIfICanEditProject (const struct Prj_Project *Prj)
+static Usr_ICan_t Prj_CheckIfICanEditProject (const struct Prj_Project *Prj)
   {
    switch (Gbl.Usrs.Me.Role.Logged)
      {
       case Rol_NET:
-	 if (Prj->Locked == Prj_LOCKED)			// Locked edition
+	 if (Prj->Locked == Prj_LOCKED)				// Locked edition
-	    return false;
+	    return Usr_I_CAN_NOT;
-	 return (Prj_GetMyRolesInProject (Prj->PrjCod) &
+	 return ((Prj_GetMyRolesInProject (Prj->PrjCod) &
-	         (1 << Prj_ROLE_TUT)) != 0;		// Am I a tutor?
+	          (1 << Prj_ROLE_TUT)) != 0) ? Usr_I_CAN :	// Am I a tutor?
+	        			       Usr_I_CAN_NOT;
       case Rol_TCH:
       case Rol_SYS_ADM:
-	 return true;
+	 return Usr_I_CAN;
       default:
-	 return false;
+	 return Usr_I_CAN_NOT;
      }
   }
 
@@ -3502,7 +3509,7 @@ void Prj_ReqRemProject (void)
    Prj_GetProjectDataByCod (&Projects.Prj);
 
    /***** Check if I can edit this project *****/
-   if (!Prj_CheckIfICanEditProject (&Projects.Prj))
+   if (Prj_CheckIfICanEditProject (&Projects.Prj) == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Show question and button to remove the project *****/
@@ -3542,7 +3549,7 @@ void Prj_RemoveProject (void)
    Prj_GetProjectDataByCod (&Projects.Prj);	// Inside this function, the course is checked to be the current one
 
    /***** Check if I can edit this project *****/
-   if (!Prj_CheckIfICanEditProject (&Projects.Prj))
+   if (Prj_CheckIfICanEditProject (&Projects.Prj) == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Remove users in project *****/
@@ -3606,7 +3613,7 @@ static void Prj_HideUnhideProject (HidVis_HiddenOrVisible_t HiddenOrVisible)
    Prj_GetProjectDataByCod (&Projects.Prj);
 
    /***** Check if I can edit this project *****/
-   if (!Prj_CheckIfICanEditProject (&Projects.Prj))
+   if (Prj_CheckIfICanEditProject (&Projects.Prj) == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Hide/unhide project *****/
@@ -3631,7 +3638,7 @@ void Prj_ReqCreatePrj (void)
    Prj_ResetPrjsAndReadConfig (&Projects);
 
    /***** Check if I can create new projects *****/
-   if (!Prj_CheckIfICanCreateProjects (&Projects))
+   if (Prj_CheckIfICanCreateProjects (&Projects) == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Get parameters *****/
@@ -3996,7 +4003,7 @@ void Prj_ReceiveProject (void)
    extern const char *Txt_The_project_has_been_modified;
    struct Prj_Projects Projects;
    bool ItsANewProject;
-   bool ICanEditProject;
+   Usr_ICan_t ICanEditProject;
    bool NewProjectIsCorrect = true;
 
    /***** Reset projects *****/
@@ -4025,7 +4032,7 @@ void Prj_ReceiveProject (void)
      }
 
    /* Check if I can create/edit project */
-   if (!ICanEditProject)
+   if (ICanEditProject == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /* Get project title */
@@ -4163,7 +4170,7 @@ void Prj_ReqLockSelectedPrjsEdition (void)
    Prj_ResetPrjsAndReadConfig (&Projects);
 
    /***** Check if I can configure projects *****/
-   if (!PrjCfg_CheckIfICanConfig ())
+   if (PrjCfg_CheckIfICanConfig () == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Get parameters *****/
@@ -4201,7 +4208,7 @@ void Prj_ReqUnloSelectedPrjsEdition (void)
    Prj_ResetPrjsAndReadConfig (&Projects);
 
    /***** Check if I can configure projects *****/
-   if (!PrjCfg_CheckIfICanConfig ())
+   if (PrjCfg_CheckIfICanConfig () == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Get parameters *****/
@@ -4242,7 +4249,7 @@ void Prj_LockSelectedPrjsEdition (void)
    Prj_ResetPrjsAndReadConfig (&Projects);
 
    /***** Check if I can configure projects *****/
-   if (!PrjCfg_CheckIfICanConfig ())
+   if (PrjCfg_CheckIfICanConfig () == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Get parameters *****/
@@ -4278,7 +4285,7 @@ void Prj_UnloSelectedPrjsEdition (void)
    Prj_ResetPrjsAndReadConfig (&Projects);
 
    /***** Check if I can configure projects *****/
-   if (!PrjCfg_CheckIfICanConfig ())
+   if (PrjCfg_CheckIfICanConfig () == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Get parameters *****/
@@ -4368,7 +4375,7 @@ void Prj_LockProjectEdition (void)
    Prj_ResetPrjsAndReadConfig (&Projects);
 
    /***** Check if I can configure projects *****/
-   if (!PrjCfg_CheckIfICanConfig ())
+   if (PrjCfg_CheckIfICanConfig () == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Allocate memory for the project *****/
@@ -4404,7 +4411,7 @@ void Prj_UnloProjectEdition (void)
    Prj_ResetPrjsAndReadConfig (&Projects);
 
    /***** Check if I can configure projects *****/
-   if (!PrjCfg_CheckIfICanConfig ())
+   if (PrjCfg_CheckIfICanConfig () == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Allocate memory for the project *****/
@@ -4440,7 +4447,7 @@ void Prj_ChangeReviewStatus (void)
    Prj_ResetPrjsAndReadConfig (&Projects);
 
    /***** Check if I can review projects *****/
-   if (!Prj_CheckIfICanReviewProjects ())
+   if (Prj_CheckIfICanReviewProjects () == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Allocate memory for the project *****/
@@ -4499,7 +4506,7 @@ static void Prj_ShowRubrics (struct Prj_Projects *Projects)
 	 for (RubricType  = (PrjCfg_RubricType_t) 1;
 	      RubricType <= (PrjCfg_RubricType_t) (PrjCfg_NUM_RUBRIC_TYPES - 1);
 	      RubricType++)
-	    if (Prj_CheckIfICanViewRubric (Projects->Prj.PrjCod,RubricType))
+	    if (Prj_CheckIfICanViewRubric (Projects->Prj.PrjCod,RubricType) == Usr_I_CAN)
 	       Prj_ShowRubricsOfType (Projects,RubricType);
 
       /***** End table *****/
@@ -4521,7 +4528,7 @@ static void Prj_ShowRubricsOfType (struct Prj_Projects *Projects,
    unsigned NumRubricsThisType;
    unsigned NumRubThisType;
    struct Rub_Rubric Rubric;
-   bool ICanFill = Prj_CheckIfICanFillRubric (Projects->Prj.PrjCod,RubricType);
+   Usr_ICan_t ICanFill = Prj_CheckIfICanFillRubric (Projects->Prj.PrjCod,RubricType);
 
    /***** Get project rubrics for current course from database *****/
    NumRubricsThisType = Prj_DB_GetRubricsOfType (&mysql_res,RubricType);
@@ -4587,7 +4594,7 @@ static void Prj_ShowRubricsOfType (struct Prj_Projects *Projects,
 /************************* Who can view/fill rubrics *************************/
 /*****************************************************************************/
 
-static bool Prj_CheckIfICanViewRubric (long PrjCod,PrjCfg_RubricType_t WhichRubric)
+static Usr_ICan_t Prj_CheckIfICanViewRubric (long PrjCod,PrjCfg_RubricType_t WhichRubric)
   {
    switch (Gbl.Usrs.Me.Role.Logged)
      {
@@ -4596,25 +4603,26 @@ static bool Prj_CheckIfICanViewRubric (long PrjCod,PrjCfg_RubricType_t WhichRubr
 	 switch (WhichRubric)
 	   {
 	    case PrjCfg_RUBRIC_ERR:
-	       return false;
+	       return Usr_I_CAN_NOT;
 	    case PrjCfg_RUBRIC_TUT:
 	    case PrjCfg_RUBRIC_EVL:
-	       return ((Prj_GetMyRolesInProject (PrjCod) & (1 << Prj_ROLE_TUT |		// I am a tutor
+	       return ((Prj_GetMyRolesInProject (PrjCod) & (1 << Prj_ROLE_TUT |				// I am a tutor...
-		                                            1 << Prj_ROLE_EVL)) != 0);	// or an evaluator
+		                                            1 << Prj_ROLE_EVL)) != 0) ? Usr_I_CAN :	// ...or an evaluator
+		                                        			        Usr_I_CAN_NOT;
 	    case PrjCfg_RUBRIC_GBL:
-	       return (Prj_GetMyRolesInProject (PrjCod) != 0);	// I am a member
+	       return (Prj_GetMyRolesInProject (PrjCod) != 0) ? Usr_I_CAN :	// I am a member
+								Usr_I_CAN_NOT;
 	   }
-         return false;
+         return Usr_I_CAN_NOT;
       case Rol_TCH:	// Editing teachers in a course can view all rubrics
       case Rol_SYS_ADM:
-         return true;
+         return Usr_I_CAN;
       default:
-         return false;
+         return Usr_I_CAN_NOT;
      }
-   return false;
   }
 
-static bool Prj_CheckIfICanFillRubric (long PrjCod,PrjCfg_RubricType_t WhichRubric)
+static Usr_ICan_t Prj_CheckIfICanFillRubric (long PrjCod,PrjCfg_RubricType_t WhichRubric)
   {
    switch (Gbl.Usrs.Me.Role.Logged)
      {
@@ -4623,20 +4631,22 @@ static bool Prj_CheckIfICanFillRubric (long PrjCod,PrjCfg_RubricType_t WhichRubr
 	 switch (WhichRubric)
 	   {
 	    case PrjCfg_RUBRIC_ERR:
-	       return false;
+	       return Usr_I_CAN_NOT;
 	    case PrjCfg_RUBRIC_TUT:
-	       return ((Prj_GetMyRolesInProject (PrjCod) & (1 << Prj_ROLE_TUT)) != 0);	// I am a tutor
+	       return ((Prj_GetMyRolesInProject (PrjCod) & (1 << Prj_ROLE_TUT)) != 0) ? Usr_I_CAN :	// I am a tutor
+											Usr_I_CAN_NOT;
 	    case PrjCfg_RUBRIC_EVL:
-	       return ((Prj_GetMyRolesInProject (PrjCod) & (1 << Prj_ROLE_EVL)) != 0);	// Am I an evaluator
+	       return ((Prj_GetMyRolesInProject (PrjCod) & (1 << Prj_ROLE_EVL)) != 0) ? Usr_I_CAN :	// Am I an evaluator
+											Usr_I_CAN_NOT;
 	    case PrjCfg_RUBRIC_GBL:
-	       return false;
+	       return Usr_I_CAN_NOT;
 	   }
-         return false;
+         return Usr_I_CAN_NOT;
       case Rol_TCH:	// Editing teachers in a course can fill all rubrics
       case Rol_SYS_ADM:
-	 return true;
+	 return Usr_I_CAN;
       default:
-	 return false;
+	 return Usr_I_CAN_NOT;
      }
   }
 
@@ -4670,7 +4680,7 @@ void Prj_ChangeCriterionScore (void)
       Err_WrongRubricExit ();
 
    /***** Update review *****/
-   if (Prj_CheckIfICanFillRubric (Prj.PrjCod,WhichRubric))
+   if (Prj_CheckIfICanFillRubric (Prj.PrjCod,WhichRubric) == Usr_I_CAN)
       Rub_DB_UpdateScore (Rsc_PROJECT,Prj.PrjCod,-1L,CriCod,Score);
    else
       Err_NoPermission ();

swad_project.h

@@ -205,8 +205,8 @@ void Prj_SeeAllProjects (void);
 void Prj_ShowProjects (struct Prj_Projects *Projects);
 void Prj_ShowTableSelectedPrjs (void);
 
-bool Prj_CheckIfICanViewProjectDocuments (long PrjCod);
+Usr_ICan_t Prj_CheckIfICanViewProjectDocuments (long PrjCod);
-bool Prj_CheckIfICanViewProjectAssessment (long PrjCod);
+Usr_ICan_t Prj_CheckIfICanViewProjectAssessment (long PrjCod);
 
 void Prj_PutCurrentPars (void *Projects);
 void Prj_PutPars (struct Prj_Filter *Filter,

swad_project_config.c

@@ -82,12 +82,12 @@ void PrjCfg_GetConfig (struct PrjCfg_Config *Config)
 /************************ Can I configure all projects? **********************/
 /*****************************************************************************/
 
-bool PrjCfg_CheckIfICanConfig (void)
+Usr_ICan_t PrjCfg_CheckIfICanConfig (void)
   {
-   static const bool ICanConfigAllProjects[Rol_NUM_ROLES] =
+   static Usr_ICan_t ICanConfigAllProjects[Rol_NUM_ROLES] =
      {
-      [Rol_TCH	  ] = true,
+      [Rol_TCH	  ] = Usr_I_CAN,
-      [Rol_SYS_ADM] = true,
+      [Rol_SYS_ADM] = Usr_I_CAN,
      };
 
    return ICanConfigAllProjects[Gbl.Usrs.Me.Role.Logged];

swad_project_config.h

@@ -61,7 +61,7 @@ struct PrgCfg_ListRubCods
 
 void PrjCfg_GetConfig (struct PrjCfg_Config *Config);
 
-bool PrjCfg_CheckIfICanConfig (void);
+Usr_ICan_t PrjCfg_CheckIfICanConfig (void);
 void PrjCfg_ShowFormConfig (void);
 PrjCfg_RubricType_t PrjCfg_GetRubricFromString (const char *Str);
 void PrjCfg_ChangeNETCanCreate (void);

swad_question.c

@@ -427,16 +427,6 @@ void Qst_ShowFormRequestSelectQstsForGame (struct Gam_Games *Games,
    DB_FreeMySQLResult (&mysql_res);
   }
 
-/*****************************************************************************/
-/*********************** Check if I can edit questions ***********************/
-/*****************************************************************************/
-
-bool Qst_CheckIfICanEditQsts (void)
-  {
-   return Gbl.Usrs.Me.Role.Logged == Rol_TCH ||
-          Gbl.Usrs.Me.Role.Logged == Rol_SYS_ADM;
-  }
-
 /*****************************************************************************/
 /********************* Put contextual icons in tests *************************/
 /*****************************************************************************/

swad_question.h

@@ -141,7 +141,6 @@ void Qst_ShowFormRequestSelectQstsForExamSet (struct Exa_Exams *Exams,
 void Qst_ShowFormRequestSelectQstsForGame (struct Gam_Games *Games,
                                            struct Qst_Questions *Questions);
 
-bool Qst_CheckIfICanEditQsts (void);
 void Qst_PutIconsRequestBankQsts (__attribute__((unused)) void *Args);
 void Qst_PutIconsEditBankQsts (void *Questions);
 

swad_record.c

@@ -37,6 +37,7 @@
 #include "swad_action.h"
 #include "swad_action_list.h"
 #include "swad_alert.h"
+#include "swad_agenda.h"
 #include "swad_box.h"
 #include "swad_config.h"
 #include "swad_database.h"
@@ -128,7 +129,7 @@ static bool Rec_GetParShowOfficeHours (void);
 static void Rec_ShowCrsRecord (Rec_CourseRecordViewType_t TypeOfView,
                                struct Usr_Data *UsrDat,const char *Anchor);
 static void Rec_ShowMyCrsRecordUpdated (void);
-static bool Rec_CheckIfICanEditField (Rec_VisibilityRecordFields_t Visibility);
+static Usr_ICan_t Rec_CheckIfICanEditField (Rec_VisibilityRecordFields_t Visibility);
 
 static void Rec_PutIconsCommands (__attribute__((unused)) void *Args);
 static void Rec_PutParsMyResults (__attribute__((unused)) void *Args);
@@ -961,7 +962,7 @@ void Rec_GetUsrAndShowRecOneStdCrs (void)
    if (Usr_ChkUsrCodAndGetAllUsrDataFromUsrCod (&Gbl.Usrs.Other.UsrDat,	// Get student's data from database
                                                 Usr_DONT_GET_PREFS,
                                                 Usr_GET_ROLE_IN_CRS))
-      if (Usr_CheckIfICanViewRecordStd (&Gbl.Usrs.Other.UsrDat))
+      if (Usr_CheckIfICanViewRecordStd (&Gbl.Usrs.Other.UsrDat) == Usr_I_CAN)
 	 Rec_ShowRecordOneStdCrs ();
   }
 
@@ -1184,7 +1185,7 @@ void Rec_GetUsrAndShowRecOneTchCrs (void)
    if (Usr_ChkUsrCodAndGetAllUsrDataFromUsrCod (&Gbl.Usrs.Other.UsrDat,	// Get teacher's data from database
                                                 Usr_DONT_GET_PREFS,
                                                 Usr_GET_ROLE_IN_CRS))
-      if (Usr_CheckIfICanViewRecordTch (&Gbl.Usrs.Other.UsrDat))
+      if (Usr_CheckIfICanViewRecordTch (&Gbl.Usrs.Other.UsrDat) == Usr_I_CAN)
 	 Rec_ShowRecordOneTchCrs ();
   }
 
@@ -1789,7 +1790,7 @@ void Rec_GetFieldsCrsRecordFromForm (void)
    for (NumField = 0;
 	NumField < Gbl.Crs.Records.LstFields.Num;
 	NumField++)
-      if (Rec_CheckIfICanEditField (Gbl.Crs.Records.LstFields.Lst[NumField].Visibility))
+      if (Rec_CheckIfICanEditField (Gbl.Crs.Records.LstFields.Lst[NumField].Visibility) == Usr_I_CAN)
         {
          /* Get text from the form */
          snprintf (FieldParName,sizeof (FieldParName),"Field%ld",
@@ -1811,7 +1812,7 @@ void Rec_UpdateCrsRecord (long UsrCod)
    for (NumField = 0;
 	NumField < Gbl.Crs.Records.LstFields.Num;
 	NumField++)
-      if (Rec_CheckIfICanEditField (Gbl.Crs.Records.LstFields.Lst[NumField].Visibility))
+      if (Rec_CheckIfICanEditField (Gbl.Crs.Records.LstFields.Lst[NumField].Visibility) == Usr_I_CAN)
         {
          /***** Check if already exists this field for this user in database *****/
          FieldAlreadyExists = (Rec_DB_GetFieldTxtFromUsrRecord (&mysql_res,
@@ -1867,7 +1868,7 @@ void Rec_AllocMemFieldsRecordsCrs (void)
    for (NumField = 0;
 	NumField < Gbl.Crs.Records.LstFields.Num;
 	NumField++)
-      if (Rec_CheckIfICanEditField (Gbl.Crs.Records.LstFields.Lst[NumField].Visibility))
+      if (Rec_CheckIfICanEditField (Gbl.Crs.Records.LstFields.Lst[NumField].Visibility) == Usr_I_CAN)
          /* Allocate memory for the texts of the fields */
          if ((Gbl.Crs.Records.LstFields.Lst[NumField].Text = malloc (Cns_MAX_BYTES_TEXT + 1)) == NULL)
             Err_NotEnoughMemoryExit ();
@@ -1884,7 +1885,7 @@ void Rec_FreeMemFieldsRecordsCrs (void)
    for (NumField = 0;
 	NumField < Gbl.Crs.Records.LstFields.Num;
 	NumField++)
-      if (Rec_CheckIfICanEditField (Gbl.Crs.Records.LstFields.Lst[NumField].Visibility))
+      if (Rec_CheckIfICanEditField (Gbl.Crs.Records.LstFields.Lst[NumField].Visibility) == Usr_I_CAN)
          /* Free memory of the text of the field */
          if (Gbl.Crs.Records.LstFields.Lst[NumField].Text)
            {
@@ -1897,13 +1898,14 @@ void Rec_FreeMemFieldsRecordsCrs (void)
 /* Check if I can edit a field depending on my role and the field visibility */
 /*****************************************************************************/
 
-static bool Rec_CheckIfICanEditField (Rec_VisibilityRecordFields_t Visibility)
+static Usr_ICan_t Rec_CheckIfICanEditField (Rec_VisibilityRecordFields_t Visibility)
   {
    // Non-editing teachers can not edit fields
-   return  Gbl.Usrs.Me.Role.Logged == Rol_TCH     ||
+   return ( Gbl.Usrs.Me.Role.Logged == Rol_TCH     ||
-	   Gbl.Usrs.Me.Role.Logged == Rol_SYS_ADM ||
+	    Gbl.Usrs.Me.Role.Logged == Rol_SYS_ADM ||
-	  (Gbl.Usrs.Me.Role.Logged == Rol_STD &&
+	   (Gbl.Usrs.Me.Role.Logged == Rol_STD &&
-	   Visibility == Rec_EDITABLE_FIELD);
+	    Visibility == Rec_EDITABLE_FIELD)) ? Usr_I_CAN :
+						 Usr_I_CAN_NOT;
   }
 
 /*****************************************************************************/
@@ -2064,8 +2066,8 @@ void Rec_ShowSharedUsrRecord (Rec_SharedRecordViewType_t TypeOfView,
 	 ViewType = Vie_EDIT;
 	 break;
       case Rec_SHA_OTHER_EXISTING_USR_FORM:
-	 ViewType = Usr_ICanChangeOtherUsrData (UsrDat) ? Vie_EDIT :
+	 ViewType = (Usr_ICanChangeOtherUsrData (UsrDat) == Usr_I_CAN) ? Vie_EDIT :
-							  Vie_VIEW;
+							                 Vie_VIEW;
 	 break;
       default:	// In other options, I can not edit user's data
 	 ViewType = Vie_VIEW;
@@ -2280,7 +2282,7 @@ void Rec_ShowSharedUsrRecord (Rec_SharedRecordViewType_t TypeOfView,
 static void Rec_PutIconsCommands (__attribute__((unused)) void *Args)
   {
    Usr_MeOrOther_t MeOrOther = Usr_ItsMe (Rec_Record.UsrDat->UsrCod);
-   bool ICanViewUsrProfile;
+   Usr_ICan_t ICanViewUsrProfile;
    bool RecipientHasBannedMe;
    static Act_Action_t NextAction[Rol_NUM_ROLES] =
      {
@@ -2350,8 +2352,8 @@ static void Rec_PutIconsCommands (__attribute__((unused)) void *Args)
        Act_GetBrowserTab (Gbl.Action.Act) == Act_1ST_TAB &&	// Only in main browser tab
        Gbl.Usrs.Me.Logged)					// Only if I am logged
      {
-      ICanViewUsrProfile = Pri_ShowingIsAllowed (Rec_Record.UsrDat->BaPrfVisibility,
+      ICanViewUsrProfile = Pri_CheckIfICanView (Rec_Record.UsrDat->BaPrfVisibility,
-						 Rec_Record.UsrDat);
+						Rec_Record.UsrDat);
 
       /***** Begin container *****/
       HTM_DIV_Begin ("class=\"FRAME_ICO\"");
@@ -2363,25 +2365,25 @@ static void Rec_PutIconsCommands (__attribute__((unused)) void *Args)
 					   "pen.svg",Ico_BLACK);
 
 	 /***** Button to view user's profile *****/
-	 if (ICanViewUsrProfile)
+	 if (ICanViewUsrProfile == Usr_I_CAN)
 	    Lay_PutContextualLinkOnlyIcon (ActSeeOthPubPrf,NULL,
 					   Rec_PutParUsrCodEncrypted,NULL,
 					   "user.svg",Ico_BLACK);
 
 	 /***** Button to view user's record card *****/
-	 if (Usr_CheckIfICanViewRecordStd (Rec_Record.UsrDat))
+	 if (Usr_CheckIfICanViewRecordStd (Rec_Record.UsrDat) == Usr_I_CAN)
 	    /* View student's records: common record card and course record card */
 	    Lay_PutContextualLinkOnlyIcon (ActSeeRecOneStd,NULL,
 					   Rec_PutParUsrCodEncrypted,NULL,
 					   "address-card.svg",Ico_BLACK);
-	 else if (Usr_CheckIfICanViewRecordTch (Rec_Record.UsrDat))
+	 else if (Usr_CheckIfICanViewRecordTch (Rec_Record.UsrDat) == Usr_I_CAN)
 	    /* View teacher's record card and timetable */
 	    Lay_PutContextualLinkOnlyIcon (ActSeeRecOneTch,NULL,
 					   Rec_PutParUsrCodEncrypted,NULL,
 					   "address-card.svg",Ico_BLACK);
 
 	 /***** Button to view user's agenda *****/
-	 if (Usr_CheckIfICanViewUsrAgenda (Rec_Record.UsrDat))
+	 if (Agd_CheckIfICanViewUsrAgenda (Rec_Record.UsrDat) == Usr_I_CAN)
 	    Lay_PutContextualLinkOnlyIcon (ActSeeAgd[MeOrOther],NULL,
 					   FuncPutParsAgd[MeOrOther],NULL,
 					   "calendar.svg",Ico_BLACK);
@@ -2402,7 +2404,7 @@ static void Rec_PutIconsCommands (__attribute__((unused)) void *Args)
 	    if (Rec_Record.UsrDat->Roles.InCurrentCrs == Rol_STD)	// He/she is a student in current course
 	      {
 	       /***** Buttons to view student's test, exam and match results *****/
-	       if (Usr_CheckIfICanViewTstExaMchResult (Rec_Record.UsrDat))
+	       if (Usr_CheckIfICanViewTstExaMchResult (Rec_Record.UsrDat) == Usr_I_CAN)
 		 {
 		  /* Test results in course */
 		  Lay_PutContextualLinkOnlyIcon (ActSeeTstResCrs[MeOrOther],NULL,
@@ -2419,13 +2421,13 @@ static void Rec_PutIconsCommands (__attribute__((unused)) void *Args)
 		 }
 
 	       /***** Button to view student's assignments and works *****/
-	       if (Usr_CheckIfICanViewAsgWrk (Rec_Record.UsrDat))
+	       if (Usr_CheckIfICanViewAsgWrk (Rec_Record.UsrDat) == Usr_I_CAN)
 		  Lay_PutContextualLinkOnlyIcon (ActAdmAsgWrk[MeOrOther],NULL,
 						 FuncPutParsAdmAsgWrk[MeOrOther],NULL,
 						 "folder-open.svg",Ico_BLACK);
 
 	       /***** Button to view student's attendance *****/
-	       if (Usr_CheckIfICanViewAtt (Rec_Record.UsrDat))
+	       if (Usr_CheckIfICanViewAtt (Rec_Record.UsrDat) == Usr_I_CAN)
 		  Lay_PutContextualLinkOnlyIcon (ActSeeLstAtt[MeOrOther],NULL,
 						 FuncPutParsSeeLstAtt[MeOrOther],NULL,
 						 "calendar-check.svg",Ico_BLACK);
@@ -2453,7 +2455,7 @@ static void Rec_PutIconsCommands (__attribute__((unused)) void *Args)
 	       Lay_PutContextualLinkOnlyIcon (ActUnfUsr,NULL,
 					      Rec_PutParUsrCodEncrypted,NULL,
 					      "user-check.svg",Ico_BLACK);	// Put button to unfollow, even if I can not view user's profile
-	    else if (ICanViewUsrProfile)
+	    else if (ICanViewUsrProfile == Usr_I_CAN)
 	       Lay_PutContextualLinkOnlyIcon (ActFolUsr,NULL,
 					      Rec_PutParUsrCodEncrypted,NULL,
 					      "user-plus.svg",Ico_BLACK);	// Put button to follow

swad_resource.c

@@ -472,12 +472,12 @@ bool Rsc_GetParLink (struct Rsc_Link *Link)
 /************************** Check if I can get link **************************/
 /*****************************************************************************/
 
-bool Rsc_CheckIfICanGetLink (void)
+Usr_ICan_t Rsc_CheckIfICanGetLink (void)
   {
-   static const bool ICanGetLink[Rol_NUM_ROLES] =
+   static Usr_ICan_t ICanGetLink[Rol_NUM_ROLES] =
      {
-      [Rol_TCH    ] = true,
+      [Rol_TCH    ] = Usr_I_CAN,
-      [Rol_SYS_ADM] = true,
+      [Rol_SYS_ADM] = Usr_I_CAN,
      };
 
    return ICanGetLink[Gbl.Usrs.Me.Role.Logged];

swad_resource.h

@@ -32,6 +32,7 @@
 #include "swad_form.h"
 #include "swad_HTML.h"
 #include "swad_string.h"
+#include "swad_user.h"
 
 /*****************************************************************************/
 /************************** Public types and constants ***********************/
@@ -88,6 +89,6 @@ Rsc_Type_t Rsc_GetTypeFromString (const char *Str);
 
 bool Rsc_GetParLink (struct Rsc_Link *Link);
 
-bool Rsc_CheckIfICanGetLink (void);
+Usr_ICan_t Rsc_CheckIfICanGetLink (void);
 
 #endif

swad_room.c

@@ -97,7 +97,7 @@ static void Roo_GetAndListMACAddresses (long RooCod);
 static void Roo_GetAndEditMACAddresses (long RooCod,const char *Anchor);
 
 static Roo_Order_t Roo_GetParRoomOrder (void);
-static bool Roo_CheckIfICanCreateRooms (void);
+static Usr_ICan_t Roo_CheckIfICanCreateRooms (void);
 static void Roo_PutIconsListingRooms (__attribute__((unused)) void *Args);
 static void Roo_PutIconToEditRooms (void);
 static void Roo_PutIconsEditingRooms (__attribute__((unused)) void *Args);
@@ -377,9 +377,10 @@ static Roo_Order_t Roo_GetParRoomOrder (void)
 /*********************** Check if I can create rooms *************************/
 /*****************************************************************************/
 
-static bool Roo_CheckIfICanCreateRooms (void)
+static Usr_ICan_t Roo_CheckIfICanCreateRooms (void)
   {
-   return Gbl.Usrs.Me.Role.Logged >= Rol_CTR_ADM;
+   return (Gbl.Usrs.Me.Role.Logged >= Rol_CTR_ADM) ? Usr_I_CAN :
+						     Usr_I_CAN_NOT;
   }
 
 /*****************************************************************************/
@@ -389,7 +390,7 @@ static bool Roo_CheckIfICanCreateRooms (void)
 static void Roo_PutIconsListingRooms (__attribute__((unused)) void *Args)
   {
    /***** Put icon to edit rooms *****/
-   if (Roo_CheckIfICanCreateRooms ())
+   if (Roo_CheckIfICanCreateRooms () == Usr_I_CAN)
       Roo_PutIconToEditRooms ();
   }
 
@@ -399,8 +400,7 @@ static void Roo_PutIconsListingRooms (__attribute__((unused)) void *Args)
 
 static void Roo_PutIconToEditRooms (void)
   {
-   Ico_PutContextualIconToEdit (ActEdiRoo,NULL,
+   Ico_PutContextualIconToEdit (ActEdiRoo,NULL,NULL,NULL);
-                                NULL,NULL);
   }
 
 /*****************************************************************************/
@@ -460,8 +460,7 @@ static void Roo_EditRoomsInternal (void)
 static void Roo_PutIconsEditingRooms (__attribute__((unused)) void *Args)
   {
    /***** Put icon to view rooms *****/
-   Ico_PutContextualIconToView (ActSeeRoo,NULL,
+   Ico_PutContextualIconToView (ActSeeRoo,NULL,NULL,NULL);
-				NULL,NULL);
   }
 
 /*****************************************************************************/
@@ -702,7 +701,7 @@ static void Roo_ListRoomsForEdition (const struct Bld_Buildings *Buildings,
 	    Nam_ExistingShortAndFullNames (ActionRename,
 					   ParCod_Roo,Room->RooCod,
 					   Names,
-					   true);	// Put form
+					   Frm_PUT_FORM);
 
 	    /* Seating capacity */
 	    HTM_TD_Begin ("class=\"LT\"");

swad_room_database.c

@@ -396,7 +396,7 @@ long Roo_DB_CheckIn (long RooCod)
 /********************** Check if I can see user's location *******************/
 /*****************************************************************************/
 
-bool Roo_DB_CheckIfICanSeeUsrLocation (long UsrCod)
+Usr_ICan_t Roo_DB_CheckIfICanSeeUsrLocation (long UsrCod)
   {
    /*
    I can only consult the location of another user
@@ -426,7 +426,8 @@ bool Roo_DB_CheckIfICanSeeUsrLocation (long UsrCod)
 			      " AND crs_courses.DegCod=deg_degrees.DegCod) AS C2"	// centers of user's courses
 			    " WHERE C1.CtrCod=C2.CtrCod)",
 		   Gbl.Usrs.Me.UsrDat.UsrCod,
-		   UsrCod);
+		   UsrCod) ? Usr_I_CAN :
+			     Usr_I_CAN_NOT;
   }
 
 /*****************************************************************************/

swad_room_database.h

@@ -55,7 +55,7 @@ void Roo_DB_RemoveAllRoomsInCtr (long CtrCod);
 //--------------------------------- Check in ----------------------------------
 long Roo_DB_CheckIn (long RooCod);
 
-bool Roo_DB_CheckIfICanSeeUsrLocation (long UsrCod);
+Usr_ICan_t Roo_DB_CheckIfICanSeeUsrLocation (long UsrCod);
 unsigned Roo_DB_GetUsrLastLocation (MYSQL_RES **mysql_res,long UsrCod);
 unsigned Roo_DB_GetLocationByMAC (MYSQL_RES **mysql_res,unsigned long long MACnum);
 

swad_rubric.c

@@ -228,12 +228,12 @@ void Rub_ListAllRubrics (struct Rub_Rubrics *Rubrics)
 /************************ Check if I can edit rubrics ************************/
 /*****************************************************************************/
 
-bool Rub_CheckIfICanEditRubrics (void)
+Usr_ICan_t Rub_CheckIfICanEditRubrics (void)
   {
-   static const bool ICanEditRubrics[Rol_NUM_ROLES] =
+   static Usr_ICan_t ICanEditRubrics[Rol_NUM_ROLES] =
      {
-      [Rol_TCH    ] = true,
+      [Rol_TCH    ] = Usr_I_CAN,
-      [Rol_SYS_ADM] = true,
+      [Rol_SYS_ADM] = Usr_I_CAN,
      };
 
    return ICanEditRubrics[Gbl.Usrs.Me.Role.Logged];
@@ -245,7 +245,7 @@ bool Rub_CheckIfICanEditRubrics (void)
 
 bool Rub_CheckIfEditable (void)
   {
-   if (Rub_CheckIfICanEditRubrics ())
+   if (Rub_CheckIfICanEditRubrics () == Usr_I_CAN)
       /***** Rubric is editable only if ... *****/
       // TODO: Change to control that a rubric is not edited in some circunstances?
       /*
@@ -265,7 +265,7 @@ static void Rub_PutIconsListRubrics (void *Rubrics)
   {
    if (Rubrics)
      {
-      if (Rub_CheckIfICanEditRubrics ())
+      if (Rub_CheckIfICanEditRubrics () == Usr_I_CAN)
 	{
          /***** Put icon to create a new rubric *****/
 	 Rub_PutIconToCreateNewRubric ((struct Rub_Rubrics *) Rubrics);
@@ -275,9 +275,8 @@ static void Rub_PutIconsListRubrics (void *Rubrics)
 	}
 
       /***** Link to get resource link *****/
-      if (Rsc_CheckIfICanGetLink ())
+      if (Rsc_CheckIfICanGetLink () == Usr_I_CAN)
-	 Ico_PutContextualIconToGetLink (ActReqLnkRub,NULL,
+	 Ico_PutContextualIconToGetLink (ActReqLnkRub,NULL,Rub_PutPars,Rubrics);
-					 Rub_PutPars,Rubrics);
 
       /***** Put icon to show a figure *****/
       Fig_PutIconToShowFigure (Fig_RUBRICS);
@@ -300,8 +299,7 @@ static void Rub_PutIconToCreateNewRubric (struct Rub_Rubrics *Rubrics)
 
 static void Prg_PutIconToViewResourceClipboard (void)
   {
-   Ico_PutContextualIconToViewClipboard (ActSeeRscCli_InRub,NULL,
+   Ico_PutContextualIconToViewClipboard (ActSeeRscCli_InRub,NULL,NULL,NULL);
-                                         NULL,NULL);
   }
 
 /*****************************************************************************/
@@ -472,26 +470,22 @@ static void Rub_PutIconsEditingOneRubric (void *Rubrics)
   {
    if (Rubrics)
       /***** Icon to view rubric *****/
-      Ico_PutContextualIconToView (ActSeeOneRub,NULL,
+      Ico_PutContextualIconToView (ActSeeOneRub,NULL,Rub_PutPars,Rubrics);
-				   Rub_PutPars,Rubrics);
   }
 
 static void Rub_PutIconsToRemEditOneRubric (struct Rub_Rubrics *Rubrics)
   {
-   if (Rub_CheckIfICanEditRubrics ())
+   if (Rub_CheckIfICanEditRubrics () == Usr_I_CAN)
      {
       /***** Icon to remove rubric *****/
-      Ico_PutContextualIconToRemove (ActReqRemRub,NULL,
+      Ico_PutContextualIconToRemove (ActReqRemRub,NULL,Rub_PutPars,Rubrics);
-				     Rub_PutPars,Rubrics);
 
       /***** Icon to edit rubric *****/
-      Ico_PutContextualIconToEdit (ActEdiOneRub,NULL,
+      Ico_PutContextualIconToEdit (ActEdiOneRub,NULL,Rub_PutPars,Rubrics);
-				   Rub_PutPars,Rubrics);
 
       /***** Link to get resource link *****/
-      if (Rsc_CheckIfICanGetLink ())
+      if (Rsc_CheckIfICanGetLink () == Usr_I_CAN)
-	 Ico_PutContextualIconToGetLink (ActReqLnkRub,NULL,
+	 Ico_PutContextualIconToGetLink (ActReqLnkRub,NULL,Rub_PutPars,Rubrics);
-					 Rub_PutPars,Rubrics);
      }
   }
 
@@ -652,7 +646,7 @@ void Rub_AskRemRubric (void)
 
    /***** Get data of the rubric from database *****/
    Rub_GetRubricDataByCod (&Rubrics.Rubric);
-   if (!Rub_CheckIfICanEditRubrics ())
+   if (Rub_CheckIfICanEditRubrics () == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Show criterion and button to remove rubric *****/
@@ -686,7 +680,7 @@ void Rub_RemoveRubric (void)
 
    /***** Get data of the rubric from database *****/
    Rub_GetRubricDataByCod (&Rubrics.Rubric);
-   if (!Rub_CheckIfICanEditRubrics ())
+   if (Rub_CheckIfICanEditRubrics () == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Remove rubric from all tables *****/
@@ -738,7 +732,7 @@ void Rub_ReqCreatOrEditRubric (void)
    Rub_ExistingNewRubric_t ExistingNewRubric;
 
    /***** Check if I can edit rubrics *****/
-   if (!Rub_CheckIfICanEditRubrics ())
+   if (Rub_CheckIfICanEditRubrics () == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Reset rubrics context *****/
@@ -910,7 +904,7 @@ void Rub_ReceiveRubric (void)
    Rub_ExistingNewRubric_t ExistingNewRubric;
 
    /***** Check if I can edit rubrics *****/
-   if (!Rub_CheckIfICanEditRubrics ())
+   if (Rub_CheckIfICanEditRubrics () == Usr_I_CAN_NOT)
       Err_NoPermissionExit ();
 
    /***** Reset rubrics context *****/

swad_rubric.h

@@ -54,7 +54,7 @@ void Rub_RubricDestructor (struct Rub_Rubric *Rubric);
 
 void Rub_SeeAllRubrics (void);
 void Rub_ListAllRubrics (struct Rub_Rubrics *Rubrics);
-bool Rub_CheckIfICanEditRubrics (void);
+Usr_ICan_t Rub_CheckIfICanEditRubrics (void);
 bool Rub_CheckIfEditable (void);
 void Rub_SeeOneRubric (void);
 void Rub_ShowOnlyOneRubric (struct Rub_Rubrics *Rubrics);

swad_rubric_criteria.c

@@ -561,7 +561,7 @@ void RubCri_ListCriteriaForEdition (struct Rub_Rubrics *Rubrics)
 /*****************************************************************************/
 
 void RubCri_ListCriteriaInProject (struct Prj_Projects *Projects,long RubCod,
-				   bool ICanFill)
+				   Usr_ICan_t ICanFill)
   {
    MYSQL_RES *mysql_res;
    unsigned NumCriteria;

swad_rubric_criteria.h

@@ -45,7 +45,7 @@ void RubCri_ChangeWeight (void);
 void RubCri_ListCriteriaForSeeing (const struct Rub_Rubrics *Rubrics);
 void RubCri_ListCriteriaForEdition (struct Rub_Rubrics *Rubrics);
 void RubCri_ListCriteriaInProject (struct Prj_Projects *Projects,long RubCod,
-				   bool ICanFill);
+				   Usr_ICan_t ICanFill);
 
 void Rub_PushRubCod (struct Rub_Node **TOS,long RubCod);
 void Rub_PopRubCod (struct Rub_Node **TOS);

swad_rubric_resource.c

@@ -114,7 +114,7 @@ static void RubRsc_ShowClipboard (void)
 static void RubRsc_PutIconsClipboard (__attribute__((unused)) void *Args)
   {
    /***** Put icon to remove resource clipboard in rubrics *****/
-   if (Rub_CheckIfICanEditRubrics ())
+   if (Rub_CheckIfICanEditRubrics () == Usr_I_CAN)
       if (Rsc_DB_GetNumResourcesInClipboard ())	// Only if there are resources
 	 Ico_PutContextualIconToRemove (ActRemRscCli_InRub,NULL,
 					NULL,NULL);

swad_survey.c

@@ -75,7 +75,7 @@ extern struct Globals Gbl;
 /***************************** Private prototypes ****************************/
 /*****************************************************************************/
 
-static bool Svy_CheckIfICanCreateSvy (void);
+static Usr_ICan_t Svy_CheckIfICanCreateSvy (void);
 static void Svy_PutIconsListSurveys (void *Surveys);
 static void Svy_PutIconToCreateNewSvy (struct Svy_Surveys *Surveys);
 static void Svy_PutParsToCreateNewSvy (void *Surveys);
@@ -224,7 +224,7 @@ void Svy_ListAllSurveys (struct Svy_Surveys *Surveys)
 	    HTM_TR_Begin (NULL);
 
 	       if (Surveys->Svy.Status.ICanEdit ||
-		   Rsc_CheckIfICanGetLink ())
+		   Rsc_CheckIfICanGetLink () == Usr_I_CAN)
                   HTM_TH_Span (NULL,HTM_HEAD_CENTER,1,1,"CONTEXT_COL");	// Column for contextual icons
 
 	       for (Order  = (Dat_StartEndTime_t) 0;
@@ -287,15 +287,15 @@ void Svy_ListAllSurveys (struct Svy_Surveys *Surveys)
 /******************* Check if I can create a new survey **********************/
 /*****************************************************************************/
 
-static bool Svy_CheckIfICanCreateSvy (void)
+static Usr_ICan_t Svy_CheckIfICanCreateSvy (void)
   {
-   static const bool ICanCreateSvy[Rol_NUM_ROLES] =
+   static Usr_ICan_t ICanCreateSvy[Rol_NUM_ROLES] =
      {
-      [Rol_TCH	  ] = true,
+      [Rol_TCH	  ] = Usr_I_CAN,
-      [Rol_DEG_ADM] = true,
+      [Rol_DEG_ADM] = Usr_I_CAN,
-      [Rol_CTR_ADM] = true,
+      [Rol_CTR_ADM] = Usr_I_CAN,
-      [Rol_INS_ADM] = true,
+      [Rol_INS_ADM] = Usr_I_CAN,
-      [Rol_SYS_ADM] = true,
+      [Rol_SYS_ADM] = Usr_I_CAN,
      };
 
    return ICanCreateSvy[Gbl.Usrs.Me.Role.Logged];
@@ -308,13 +308,12 @@ static bool Svy_CheckIfICanCreateSvy (void)
 static void Svy_PutIconsListSurveys (void *Surveys)
   {
    /***** Put icon to create a new survey *****/
-   if (Svy_CheckIfICanCreateSvy ())
+   if (Svy_CheckIfICanCreateSvy () == Usr_I_CAN)
       Svy_PutIconToCreateNewSvy ((struct Svy_Surveys *) Surveys);
 
    /***** Put icon to get resource link *****/
-   if (Rsc_CheckIfICanGetLink ())
+   if (Rsc_CheckIfICanGetLink () == Usr_I_CAN)
-      Ico_PutContextualIconToGetLink (ActReqLnkSvy,NULL,
+      Ico_PutContextualIconToGetLink (ActReqLnkSvy,NULL,Svy_PutPars,Surveys);
-				      Svy_PutPars,Surveys);
 
    /***** Put icon to show a figure *****/
    Fig_PutIconToShowFigure (Fig_SURVEYS);
@@ -439,7 +438,7 @@ static void Svy_ShowOneSurvey (struct Svy_Surveys *Surveys,
 	 HTM_TD_Begin ("rowspan=\"2\" class=\"CONTEXT_COL %s\"",
 	               The_GetColorRows ());
 	    if (Surveys->Svy.Status.ICanEdit ||
-		Rsc_CheckIfICanGetLink ())
+		Rsc_CheckIfICanGetLink () == Usr_I_CAN)
 	       Svy_PutFormsToRemEditOneSvy (Surveys,Anchor);
 	 HTM_TD_End ();
 	}
@@ -846,12 +845,10 @@ static void Svy_PutFormsToRemEditOneSvy (struct Svy_Surveys *Surveys,
    if (Surveys->Svy.Status.ICanEdit)
      {
       /***** Icon to remove survey *****/
-      Ico_PutContextualIconToRemove (ActReqRemSvy,NULL,
+      Ico_PutContextualIconToRemove (ActReqRemSvy,NULL,Svy_PutPars,Surveys);
-				     Svy_PutPars,Surveys);
 
       /***** Icon to reset survey *****/
-      Ico_PutContextualIconToReset (ActReqRstSvy,NULL,
+      Ico_PutContextualIconToReset (ActReqRstSvy,NULL,Svy_PutPars,Surveys);
-				    Svy_PutPars,Surveys);
 
       /***** Icon to hide/unhide survey *****/
       Ico_PutContextualIconToHideUnhide (ActionHideUnhide,Anchor,
@@ -859,14 +856,12 @@ static void Svy_PutFormsToRemEditOneSvy (struct Svy_Surveys *Surveys,
 					 Surveys->Svy.Status.HiddenOrVisible);
 
       /***** Icon to edit survey *****/
-      Ico_PutContextualIconToEdit (ActEdiOneSvy,NULL,
+      Ico_PutContextualIconToEdit (ActEdiOneSvy,NULL,Svy_PutPars,Surveys);
-				   Svy_PutPars,Surveys);
      }
 
    /***** Icon to get resource link *****/
-   if (Rsc_CheckIfICanGetLink ())
+   if (Rsc_CheckIfICanGetLink () == Usr_I_CAN)
-      Ico_PutContextualIconToGetLink (ActReqLnkSvy,NULL,
+      Ico_PutContextualIconToGetLink (ActReqLnkSvy,NULL,Svy_PutPars,Surveys);
-				      Svy_PutPars,Surveys);
   }
 
 /*****************************************************************************/
@@ -1165,7 +1160,7 @@ void Svy_GetSurveyDataByCod (struct Svy_Survey *Svy)
 	    break;
 	 case Hie_CRS:	// Course
 	    Svy->Status.IBelongToScope = Hie_CheckIfIBelongTo (Svy->Level,Svy->HieCod) &&
-					 Svy_DB_CheckIfICanDoThisSurveyBasedOnGrps (Svy->SvyCod);
+					 Svy_DB_CheckIfICanDoThisSurveyBasedOnGrps (Svy->SvyCod) == Usr_I_CAN;
 	    break;
 	 default:	// Unknown
             Err_WrongHierarchyLevelExit ();
@@ -1596,7 +1591,7 @@ void Svy_ReqCreatOrEditSvy (void)
    if (ItsANewSurvey)
      {
       /***** Put link (form) to create new survey *****/
-      if (!Svy_CheckIfICanCreateSvy ())
+      if (Svy_CheckIfICanCreateSvy () == Usr_I_CAN_NOT)
          Err_NoPermissionExit ();
 
       /* Initialize to empty survey */

swad_survey_database.c

@@ -743,7 +743,7 @@ unsigned Svy_DB_GetGrpNamesAssociatedToSvy (MYSQL_RES **mysql_res,long SvyCod)
 /************ Check if I belong to any of the groups of a survey *************/
 /*****************************************************************************/
 
-bool Svy_DB_CheckIfICanDoThisSurveyBasedOnGrps (long SvyCod)
+Usr_ICan_t Svy_DB_CheckIfICanDoThisSurveyBasedOnGrps (long SvyCod)
   {
    return
    DB_QueryEXISTS ("can not check if I can do a survey",
@@ -762,7 +762,8 @@ bool Svy_DB_CheckIfICanDoThisSurveyBasedOnGrps (long SvyCod)
 			     " WHERE grp_users.UsrCod=%ld"
 			       " AND grp_users.GrpCod=svy_groups.GrpCod)))",
 		   SvyCod,
-		   Gbl.Usrs.Me.UsrDat.UsrCod);
+		   Gbl.Usrs.Me.UsrDat.UsrCod) ? Usr_I_CAN :
+						Usr_I_CAN_NOT;
   }
 
 /*****************************************************************************/

swad_survey_database.h

@@ -66,7 +66,7 @@ void Svy_DB_RemoveSvysIn (Hie_Level_t Level,long HieCod);
 void Svy_DB_CreateGrp (long SvyCod,long GrpCod);
 
 unsigned Svy_DB_GetGrpNamesAssociatedToSvy (MYSQL_RES **mysql_res,long SvyCod);
-bool Svy_DB_CheckIfICanDoThisSurveyBasedOnGrps (long SvyCod);
+Usr_ICan_t Svy_DB_CheckIfICanDoThisSurveyBasedOnGrps (long SvyCod);
 
 void Svy_DB_RemoveGroupsOfType (long GrpTypCod);
 void Svy_DB_RemoveGroup (long GrpCod);

swad_tab.c

@@ -43,7 +43,7 @@ extern struct Globals Gbl;
 /***************************** Private prototypes ****************************/
 /*****************************************************************************/
 
-static bool Tab_CheckIfICanViewTab (Tab_Tab_t Tab);
+static Usr_ICan_t Tab_CheckIfICanViewTab (Tab_Tab_t Tab);
 static const char *Tab_GetIcon (Tab_Tab_t Tab);
 
 /*****************************************************************************/
@@ -55,7 +55,6 @@ void Tab_DrawTabs (void)
    extern const char *Ico_IconSetId[Ico_NUM_ICON_SETS];
    Tab_Tab_t NumTab;
    const char *TabTxt;
-   bool ICanViewTab;
    char URLIconSet[PATH_MAX + 1];
    static const char *ClassIcoTab[Ico_NUM_ICON_SETS] =
      {
@@ -73,8 +72,6 @@ void Tab_DrawTabs (void)
 	      NumTab <= (Tab_Tab_t) (Tab_NUM_TABS - 1);
 	      NumTab++)
 	   {
-	    ICanViewTab = Tab_CheckIfICanViewTab (NumTab);
-
 	    /* If current tab is unknown, then activate the first one with access allowed */
 	    if (Gbl.Action.Tab == TabUnk)
 	      {
@@ -82,7 +79,7 @@ void Tab_DrawTabs (void)
 	       Tab_DisableIncompatibleTabs ();
 	      }
 
-	    if (ICanViewTab)	// Don't show the first hidden tabs
+	    if (Tab_CheckIfICanViewTab (NumTab) == Usr_I_CAN)	// Don't show the first hidden tabs
 	      {
 	       TabTxt = Tab_GetTxt (NumTab);
 
@@ -133,32 +130,40 @@ void Tab_DrawTabs (void)
 /************************* Check if I can view a tab *************************/
 /*****************************************************************************/
 
-static bool Tab_CheckIfICanViewTab (Tab_Tab_t Tab)
+static Usr_ICan_t Tab_CheckIfICanViewTab (Tab_Tab_t Tab)
   {
    switch (Tab)
      {
       case TabUnk:
-	 return false;
+	 return Usr_I_CAN_NOT;
       case TabSys:
-	 return (Gbl.Hierarchy.Level == Hie_SYS);	// Institution selected
+	 return (Gbl.Hierarchy.Level == Hie_SYS) ? Usr_I_CAN :	// Institution selected
+						   Usr_I_CAN_NOT;
       case TabCty:
-	 return (Gbl.Hierarchy.Level == Hie_CTY);	// Institution selected
+	 return (Gbl.Hierarchy.Level == Hie_CTY) ? Usr_I_CAN :	// Institution selected
+						   Usr_I_CAN_NOT;
       case TabIns:
-	 return (Gbl.Hierarchy.Level == Hie_INS);	// Institution selected
+	 return (Gbl.Hierarchy.Level == Hie_INS) ? Usr_I_CAN :	// Institution selected
+						   Usr_I_CAN_NOT;
       case TabCtr:
-	 return (Gbl.Hierarchy.Level == Hie_CTR);	// Center selected
+	 return (Gbl.Hierarchy.Level == Hie_CTR) ? Usr_I_CAN :	// Center selected
+						   Usr_I_CAN_NOT;
       case TabDeg:
-	 return (Gbl.Hierarchy.Level == Hie_DEG);	// Degree selected
+	 return (Gbl.Hierarchy.Level == Hie_DEG) ? Usr_I_CAN :	// Degree selected
+						   Usr_I_CAN_NOT;
       case TabCrs:
-	 return (Gbl.Hierarchy.Level == Hie_CRS);	// Course selected
+	 return (Gbl.Hierarchy.Level == Hie_CRS) ? Usr_I_CAN :	// Course selected
+						   Usr_I_CAN_NOT;
       case TabAss:
-	 return (Gbl.Hierarchy.Level == Hie_CRS &&	// Course selected
+	 return (Gbl.Hierarchy.Level == Hie_CRS &&		// Course selected
-	         Gbl.Usrs.Me.Role.Logged >= Rol_STD);	// I belong to course or I am an admin
+	         Gbl.Usrs.Me.Role.Logged >= Rol_STD) ? Usr_I_CAN :	// I belong to course or I am an admin
+						       Usr_I_CAN_NOT;
       case TabFil:
       	 return (Gbl.Hierarchy.Node[Hie_INS].HieCod > 0 ||	// Institution selected
-	         Gbl.Usrs.Me.Logged);				// I'm logged
+	         Gbl.Usrs.Me.Logged) ? Usr_I_CAN :		// I'm logged
+				       Usr_I_CAN_NOT;
       default:
-	 return true;
+	 return Usr_I_CAN;
      }
   }
 

swad_test_print.c

@@ -126,31 +126,31 @@ static void TstPrn_GetCorrectAndComputeTxtAnsScore (struct TstPrn_PrintedQuestio
 static void TstPrn_WriteIntAnsPrint (struct Usr_Data *UsrDat,
                                      const struct TstPrn_PrintedQuestion *PrintedQuestion,
 				     struct Qst_Question *Question,
-				     bool ICanView[TstVis_NUM_ITEMS_VISIBILITY],
+				     Usr_ICan_t ICanView[TstVis_NUM_ITEMS_VISIBILITY],
 				     __attribute__((unused)) const char *ClassTxt,
 				     __attribute__((unused)) const char *ClassFeedback);
 static void TstPrn_WriteFltAnsPrint (struct Usr_Data *UsrDat,
                                      const struct TstPrn_PrintedQuestion *PrintedQuestion,
 				     struct Qst_Question *Question,
-				     bool ICanView[TstVis_NUM_ITEMS_VISIBILITY],
+				     Usr_ICan_t ICanView[TstVis_NUM_ITEMS_VISIBILITY],
 				     __attribute__((unused)) const char *ClassTxt,
 				     __attribute__((unused)) const char *ClassFeedback);
 static void TstPrn_WriteTF_AnsPrint (struct Usr_Data *UsrDat,
                                      const struct TstPrn_PrintedQuestion *PrintedQuestion,
 				     struct Qst_Question *Question,
-				     bool ICanView[TstVis_NUM_ITEMS_VISIBILITY],
+				     Usr_ICan_t ICanView[TstVis_NUM_ITEMS_VISIBILITY],
 				     __attribute__((unused)) const char *ClassTxt,
 				     __attribute__((unused)) const char *ClassFeedback);
 static void TstPrn_WriteChoAnsPrint (struct Usr_Data *UsrDat,
                                      const struct TstPrn_PrintedQuestion *PrintedQuestion,
 				     struct Qst_Question *Question,
-				     bool ICanView[TstVis_NUM_ITEMS_VISIBILITY],
+				     Usr_ICan_t ICanView[TstVis_NUM_ITEMS_VISIBILITY],
 				     const char *ClassTxt,
 				     const char *ClassFeedback);
 static void TstPrn_WriteTxtAnsPrint (struct Usr_Data *UsrDat,
                                      const struct TstPrn_PrintedQuestion *PrintedQuestion,
 				     struct Qst_Question *Question,
-				     bool ICanView[TstVis_NUM_ITEMS_VISIBILITY],
+				     Usr_ICan_t ICanView[TstVis_NUM_ITEMS_VISIBILITY],
 				     __attribute__((unused)) const char *ClassTxt,
 				     __attribute__((unused)) const char *ClassFeedback);
 //-----------------------------------------------------------------------------
@@ -605,16 +605,20 @@ static void TstPrn_WriteQstAndAnsExam (struct Usr_Data *UsrDat,
    extern const char *Txt_Question_removed;
    extern const char *Txt_Question_modified;
    bool QuestionUneditedAfterExam = false;
-   bool ICanView[TstVis_NUM_ITEMS_VISIBILITY];
+   Usr_ICan_t ICanView[TstVis_NUM_ITEMS_VISIBILITY];
 
    /***** Check if I can view each part of the question *****/
    switch (Gbl.Usrs.Me.Role.Logged)
      {
       case Rol_STD:
-	 ICanView[TstVis_VISIBLE_QST_ANS_TXT   ] = TstVis_IsVisibleQstAndAnsTxt (Visibility);
+	 ICanView[TstVis_VISIBLE_QST_ANS_TXT   ] = TstVis_IsVisibleQstAndAnsTxt (Visibility) ? Usr_I_CAN :
-	 ICanView[TstVis_VISIBLE_FEEDBACK_TXT  ] = TstVis_IsVisibleFeedbackTxt  (Visibility);
+											       Usr_I_CAN_NOT;
-	 ICanView[TstVis_VISIBLE_CORRECT_ANSWER] = TstVis_IsVisibleCorrectAns   (Visibility);
+	 ICanView[TstVis_VISIBLE_FEEDBACK_TXT  ] = TstVis_IsVisibleFeedbackTxt  (Visibility) ? Usr_I_CAN :
-	 ICanView[TstVis_VISIBLE_EACH_QST_SCORE] = TstVis_IsVisibleEachQstScore (Visibility);
+											       Usr_I_CAN_NOT;
+	 ICanView[TstVis_VISIBLE_CORRECT_ANSWER] = TstVis_IsVisibleCorrectAns   (Visibility) ? Usr_I_CAN :
+											       Usr_I_CAN_NOT;
+	 ICanView[TstVis_VISIBLE_EACH_QST_SCORE] = TstVis_IsVisibleEachQstScore (Visibility) ? Usr_I_CAN :
+											       Usr_I_CAN_NOT;
 	 break;
       case Rol_NET:
       case Rol_TCH:
@@ -625,13 +629,13 @@ static void TstPrn_WriteQstAndAnsExam (struct Usr_Data *UsrDat,
 	 ICanView[TstVis_VISIBLE_QST_ANS_TXT   ] =
 	 ICanView[TstVis_VISIBLE_FEEDBACK_TXT  ] =
 	 ICanView[TstVis_VISIBLE_CORRECT_ANSWER] =
-	 ICanView[TstVis_VISIBLE_EACH_QST_SCORE] = true;
+	 ICanView[TstVis_VISIBLE_EACH_QST_SCORE] = Usr_I_CAN;
 	 break;
       default:
 	 ICanView[TstVis_VISIBLE_QST_ANS_TXT   ] =
 	 ICanView[TstVis_VISIBLE_FEEDBACK_TXT  ] =
 	 ICanView[TstVis_VISIBLE_CORRECT_ANSWER] =
-	 ICanView[TstVis_VISIBLE_EACH_QST_SCORE] = false;
+	 ICanView[TstVis_VISIBLE_EACH_QST_SCORE] = Usr_I_CAN_NOT;
 	 break;
      }
 
@@ -663,7 +667,7 @@ static void TstPrn_WriteQstAndAnsExam (struct Usr_Data *UsrDat,
 	                         ICanView[TstVis_VISIBLE_QST_ANS_TXT]);
 
 	       /* Media */
-	       if (ICanView[TstVis_VISIBLE_QST_ANS_TXT])
+	       if (ICanView[TstVis_VISIBLE_QST_ANS_TXT] == Usr_I_CAN)
 		  Med_ShowMedia (&Question->Media,
 				 "Tst_MED_SHOW_CONT",
 				 "Tst_MED_SHOW");
@@ -674,7 +678,7 @@ static void TstPrn_WriteQstAndAnsExam (struct Usr_Data *UsrDat,
 					ICanView,"Qst_TXT","Qst_TXT_LIGHT");
 
 	       /* Write score retrieved from database */
-	       if (ICanView[TstVis_VISIBLE_EACH_QST_SCORE])
+	       if (ICanView[TstVis_VISIBLE_EACH_QST_SCORE] == Usr_I_CAN)
 		 {
 		  HTM_DIV_Begin ("class=\"LM DAT_SMALL_%s\"",
 				 The_GetSuffix ());
@@ -698,7 +702,7 @@ static void TstPrn_WriteQstAndAnsExam (struct Usr_Data *UsrDat,
 
 	 /* Question feedback */
 	 if (QuestionUneditedAfterExam)
-	    if (ICanView[TstVis_VISIBLE_FEEDBACK_TXT])
+	    if (ICanView[TstVis_VISIBLE_FEEDBACK_TXT] == Usr_I_CAN)
 	       Qst_WriteQstFeedback (Question->Feedback,"Qst_TXT_LIGHT");
 
       HTM_TD_End ();
@@ -1169,14 +1173,14 @@ void TstPrn_ShowGrade (double Grade,double MaxGrade)
 void TstPrn_WriteAnswersExam (struct Usr_Data *UsrDat,
                               const struct TstPrn_PrintedQuestion *PrintedQuestion,
 			      struct Qst_Question *Question,
-			      bool ICanView[TstVis_NUM_ITEMS_VISIBILITY],
+			      Usr_ICan_t ICanView[TstVis_NUM_ITEMS_VISIBILITY],
 			      const char *ClassTxt,
 			      const char *ClassFeedback)
   {
    void (*TstPrn_WriteAnsExam[Qst_NUM_ANS_TYPES]) (struct Usr_Data *UsrDat,
                                                    const struct TstPrn_PrintedQuestion *PrintedQuestion,
 				                   struct Qst_Question *Question,
-				                   bool ICanView[TstVis_NUM_ITEMS_VISIBILITY],
+				                   Usr_ICan_t ICanView[TstVis_NUM_ITEMS_VISIBILITY],
 				                   const char *ClassTxt,
 				                   const char *ClassFeedback) =
     {
@@ -1200,7 +1204,7 @@ void TstPrn_WriteAnswersExam (struct Usr_Data *UsrDat,
 static void TstPrn_WriteIntAnsPrint (struct Usr_Data *UsrDat,
                                      const struct TstPrn_PrintedQuestion *PrintedQuestion,
 				     struct Qst_Question *Question,
-				     bool ICanView[TstVis_NUM_ITEMS_VISIBILITY],
+				     Usr_ICan_t ICanView[TstVis_NUM_ITEMS_VISIBILITY],
 				     __attribute__((unused)) const char *ClassTxt,
 				     __attribute__((unused)) const char *ClassFeedback)
   {
@@ -1225,7 +1229,7 @@ static void TstPrn_WriteIntAnsPrint (struct Usr_Data *UsrDat,
 	    if (sscanf (PrintedQuestion->StrAnswers,"%ld",&IntAnswerUsr) == 1)
 	      {
 	       HTM_TD_Begin ("class=\"CM %s_%s\"",
-			     ICanView[TstVis_VISIBLE_CORRECT_ANSWER] ?
+			     ICanView[TstVis_VISIBLE_CORRECT_ANSWER] == Usr_I_CAN ?
 				(IntAnswerUsr == Question->Answer.Integer ? "Qst_ANS_OK" :	// Correct
 									    "Qst_ANS_BAD") :	// Wrong
 									    "Qst_ANS_0",	// Blank answer
@@ -1246,7 +1250,7 @@ static void TstPrn_WriteIntAnsPrint (struct Usr_Data *UsrDat,
 
 	 /***** Write the correct answer *****/
 	 HTM_TD_Begin ("class=\"CM Qst_ANS_0_%s\"",The_GetSuffix ());
-	    if (ICanView[TstVis_VISIBLE_CORRECT_ANSWER])
+	    if (ICanView[TstVis_VISIBLE_CORRECT_ANSWER] == Usr_I_CAN)
 	       HTM_Long (Question->Answer.Integer);
 	    else
 	       Ico_PutIconNotVisible ();
@@ -1264,7 +1268,7 @@ static void TstPrn_WriteIntAnsPrint (struct Usr_Data *UsrDat,
 static void TstPrn_WriteFltAnsPrint (struct Usr_Data *UsrDat,
                                      const struct TstPrn_PrintedQuestion *PrintedQuestion,
 				     struct Qst_Question *Question,
-				     bool ICanView[TstVis_NUM_ITEMS_VISIBILITY],
+				     Usr_ICan_t ICanView[TstVis_NUM_ITEMS_VISIBILITY],
 				     __attribute__((unused)) const char *ClassTxt,
 				     __attribute__((unused)) const char *ClassFeedback)
   {
@@ -1290,7 +1294,7 @@ static void TstPrn_WriteFltAnsPrint (struct Usr_Data *UsrDat,
 	    FloatAnsUsr = Str_GetDoubleFromStr (PrintedQuestion->StrAnswers);
 	    // A bad formatted floating point answer will interpreted as 0.0
 	    HTM_TD_Begin ("class=\"CM %s_%s\"",
-			  ICanView[TstVis_VISIBLE_CORRECT_ANSWER] ?
+			  ICanView[TstVis_VISIBLE_CORRECT_ANSWER] == Usr_I_CAN ?
 			     ((FloatAnsUsr >= Question->Answer.FloatingPoint[0] &&
 			       FloatAnsUsr <= Question->Answer.FloatingPoint[1]) ? "Qst_ANS_OK" :	// Correct
 										   "Qst_ANS_BAD") :	// Wrong
@@ -1304,7 +1308,7 @@ static void TstPrn_WriteFltAnsPrint (struct Usr_Data *UsrDat,
 
 	 /***** Write the correct answer *****/
 	 HTM_TD_Begin ("class=\"CM Qst_ANS_0_%s\"",The_GetSuffix ());
-	    if (ICanView[TstVis_VISIBLE_CORRECT_ANSWER])
+	    if (ICanView[TstVis_VISIBLE_CORRECT_ANSWER] == Usr_I_CAN)
 	      {
 	       HTM_Txt ("[");
 	       HTM_Double (Question->Answer.FloatingPoint[0]);
@@ -1328,7 +1332,7 @@ static void TstPrn_WriteFltAnsPrint (struct Usr_Data *UsrDat,
 static void TstPrn_WriteTF_AnsPrint (struct Usr_Data *UsrDat,
                                      const struct TstPrn_PrintedQuestion *PrintedQuestion,
 				     struct Qst_Question *Question,
-				     bool ICanView[TstVis_NUM_ITEMS_VISIBILITY],
+				     Usr_ICan_t ICanView[TstVis_NUM_ITEMS_VISIBILITY],
 				     __attribute__((unused)) const char *ClassTxt,
 				     __attribute__((unused)) const char *ClassFeedback)
   {
@@ -1352,7 +1356,7 @@ static void TstPrn_WriteTF_AnsPrint (struct Usr_Data *UsrDat,
 
 	 /***** Write the user answer *****/
 	 HTM_TD_Begin ("class=\"CM %s_%s\"",
-		       ICanView[TstVis_VISIBLE_CORRECT_ANSWER] ?
+		       ICanView[TstVis_VISIBLE_CORRECT_ANSWER] == Usr_I_CAN ?
 			  (AnsTFUsr == Question->Answer.TF ? "Qst_ANS_OK" :	// Correct
 							     "Qst_ANS_BAD") :	// Wrong
 							     "Qst_ANS_0",	// Blank answer
@@ -1362,7 +1366,7 @@ static void TstPrn_WriteTF_AnsPrint (struct Usr_Data *UsrDat,
 
 	 /***** Write the correct answer *****/
 	 HTM_TD_Begin ("class=\"CM Qst_ANS_0_%s\"",The_GetSuffix ());
-	    if (ICanView[TstVis_VISIBLE_CORRECT_ANSWER])
+	    if (ICanView[TstVis_VISIBLE_CORRECT_ANSWER] == Usr_I_CAN)
 	       Qst_WriteAnsTF (Question->Answer.TF);
 	    else
 	       Ico_PutIconNotVisible ();
@@ -1380,7 +1384,7 @@ static void TstPrn_WriteTF_AnsPrint (struct Usr_Data *UsrDat,
 static void TstPrn_WriteChoAnsPrint (struct Usr_Data *UsrDat,
                                      const struct TstPrn_PrintedQuestion *PrintedQuestion,
 				     struct Qst_Question *Question,
-				     bool ICanView[TstVis_NUM_ITEMS_VISIBILITY],
+				     Usr_ICan_t ICanView[TstVis_NUM_ITEMS_VISIBILITY],
 				     const char *ClassTxt,
 				     const char *ClassFeedback)
   {
@@ -1399,7 +1403,7 @@ static void TstPrn_WriteChoAnsPrint (struct Usr_Data *UsrDat,
    Qst_ChangeFormatAnswersText (Question);
 
    /***** Change format of answers feedback *****/
-   if (ICanView[TstVis_VISIBLE_FEEDBACK_TXT])
+   if (ICanView[TstVis_VISIBLE_FEEDBACK_TXT] == Usr_I_CAN)
       Qst_ChangeFormatAnswersFeedback (Question);
 
    /***** Get indexes for this question from string *****/
@@ -1426,7 +1430,7 @@ static void TstPrn_WriteChoAnsPrint (struct Usr_Data *UsrDat,
 	    /* Draw icon depending on user's answer */
 	    if (UsrAnswers[Indexes[NumOpt]])	// This answer has been selected by the user
 	      {
-	       if (ICanView[TstVis_VISIBLE_CORRECT_ANSWER])
+	       if (ICanView[TstVis_VISIBLE_CORRECT_ANSWER] == Usr_I_CAN)
 		 {
 		  if (Question->Answer.Options[Indexes[NumOpt]].Correct)
 		    {
@@ -1455,7 +1459,7 @@ static void TstPrn_WriteChoAnsPrint (struct Usr_Data *UsrDat,
 	       HTM_TD_Empty (1);
 
 	    /* Draw icon that indicates whether the answer is correct */
-	    if (ICanView[TstVis_VISIBLE_CORRECT_ANSWER])
+	    if (ICanView[TstVis_VISIBLE_CORRECT_ANSWER] == Usr_I_CAN)
 	      {
 	       if (Question->Answer.Options[Indexes[NumOpt]].Correct)
 		 {
@@ -1487,7 +1491,7 @@ static void TstPrn_WriteChoAnsPrint (struct Usr_Data *UsrDat,
 
 	       HTM_DIV_Begin ("class=\"%s_%s\"",
 	                      ClassTxt,The_GetSuffix ());
-		  if (ICanView[TstVis_VISIBLE_QST_ANS_TXT])
+		  if (ICanView[TstVis_VISIBLE_QST_ANS_TXT] == Usr_I_CAN)
 		    {
 		     HTM_Txt (Question->Answer.Options[Indexes[NumOpt]].Text);
 		     Med_ShowMedia (&Question->Answer.Options[Indexes[NumOpt]].Media,
@@ -1498,7 +1502,7 @@ static void TstPrn_WriteChoAnsPrint (struct Usr_Data *UsrDat,
 		     Ico_PutIconNotVisible ();
 	       HTM_DIV_End ();
 
-	       if (ICanView[TstVis_VISIBLE_CORRECT_ANSWER])
+	       if (ICanView[TstVis_VISIBLE_CORRECT_ANSWER] == Usr_I_CAN)
 		  if (Question->Answer.Options[Indexes[NumOpt]].Feedback)
 		     if (Question->Answer.Options[Indexes[NumOpt]].Feedback[0])
 		       {
@@ -1524,7 +1528,7 @@ static void TstPrn_WriteChoAnsPrint (struct Usr_Data *UsrDat,
 static void TstPrn_WriteTxtAnsPrint (struct Usr_Data *UsrDat,
                                      const struct TstPrn_PrintedQuestion *PrintedQuestion,
 				     struct Qst_Question *Question,
-				     bool ICanView[TstVis_NUM_ITEMS_VISIBILITY],
+				     Usr_ICan_t ICanView[TstVis_NUM_ITEMS_VISIBILITY],
 				     __attribute__((unused)) const char *ClassTxt,
 				     __attribute__((unused)) const char *ClassFeedback)
   {
@@ -1537,7 +1541,7 @@ static void TstPrn_WriteTxtAnsPrint (struct Usr_Data *UsrDat,
    Qst_ChangeFormatAnswersText (Question);
 
    /***** Change format of answers feedback *****/
-   if (ICanView[TstVis_VISIBLE_FEEDBACK_TXT])
+   if (ICanView[TstVis_VISIBLE_FEEDBACK_TXT] == Usr_I_CAN)
       Qst_ChangeFormatAnswersFeedback (Question);
 
    /***** Begin table *****/
@@ -1578,9 +1582,9 @@ static void TstPrn_WriteTxtAnsPrint (struct Usr_Data *UsrDat,
 		 }
 	      }
 	    HTM_TD_Begin ("class=\"CT %s_%s\"",
-			  ICanView[TstVis_VISIBLE_CORRECT_ANSWER] ? (Correct ? "Qst_ANS_OK" :	// Correct
+			  ICanView[TstVis_VISIBLE_CORRECT_ANSWER] == Usr_I_CAN ? (Correct ? "Qst_ANS_OK" :	// Correct
-							                       "Qst_ANS_BAD") :	// Wrong
+											    "Qst_ANS_BAD") :	// Wrong
-									       "Qst_ANS_0",	// Blank answer
+											    "Qst_ANS_0",	// Blank answer
 			  The_GetSuffix ());
 	       HTM_Txt (PrintedQuestion->StrAnswers);
 	    HTM_TD_End ();
@@ -1589,7 +1593,7 @@ static void TstPrn_WriteTxtAnsPrint (struct Usr_Data *UsrDat,
             HTM_TD_Empty (1);
 
 	 /***** Write the correct answers *****/
-	 if (ICanView[TstVis_VISIBLE_CORRECT_ANSWER])
+	 if (ICanView[TstVis_VISIBLE_CORRECT_ANSWER] == Usr_I_CAN)
 	   {
 	    HTM_TD_Begin ("class=\"CT\"");
 	       HTM_TABLE_BeginPadding (2);
@@ -1614,7 +1618,7 @@ static void TstPrn_WriteTxtAnsPrint (struct Usr_Data *UsrDat,
 			      HTM_Txt (Question->Answer.Options[NumOpt].Text);
 			   HTM_DIV_End ();
 
-			   if (ICanView[TstVis_VISIBLE_FEEDBACK_TXT])
+			   if (ICanView[TstVis_VISIBLE_FEEDBACK_TXT] == Usr_I_CAN)
 			      if (Question->Answer.Options[NumOpt].Feedback)
 				 if (Question->Answer.Options[NumOpt].Feedback[0])
 				   {
@@ -1682,7 +1686,7 @@ static void TstPrn_PutFormToSelectUsrsToViewUsrsPrints (__attribute__((unused))
 				     Act_GetActionText (ActSeeUsrTstResCrs),
 				     Hlp_ASSESSMENT_Tests_results,
 				     Txt_View_results,
-				     true);	// Put form with date range
+				     Frm_PUT_FORM);	// Put form with date range
   }
 
 /*****************************************************************************/
@@ -1784,7 +1788,7 @@ static void TstPrn_ShowUsrsPrints (__attribute__((unused)) void *Args)
 	 if (Usr_ChkUsrCodAndGetAllUsrDataFromUsrCod (&Gbl.Usrs.Other.UsrDat,
 						      Usr_DONT_GET_PREFS,
 						      Usr_DONT_GET_ROLE_IN_CRS))
-	    if (Usr_CheckIfICanViewTstExaMchResult (&Gbl.Usrs.Other.UsrDat))
+	    if (Usr_CheckIfICanViewTstExaMchResult (&Gbl.Usrs.Other.UsrDat) == Usr_I_CAN)
 	      {
 	       /***** Show tests *****/
 	       Gbl.Usrs.Other.UsrDat.Accepted = Enr_CheckIfUsrHasAcceptedInCurrentCrs (&Gbl.Usrs.Other.UsrDat);
@@ -1920,7 +1924,7 @@ static void TstPrn_ShowUsrPrints (struct Usr_Data *UsrDat)
 	      }
 
 	    /* Accumulate questions and score */
-	    if (ICanView.Score)
+	    if (ICanView.Score == Usr_I_CAN)
 	      {
 	       NumTotalQsts.All      += Print.NumQsts.All;
 	       NumTotalQsts.NotBlank += Print.NumQsts.NotBlank;
@@ -1931,7 +1935,7 @@ static void TstPrn_ShowUsrPrints (struct Usr_Data *UsrDat)
 	    HTM_TD_Begin ("class=\"RT %s_%s LINE_LEFT %s\"",
 	                  ClassDat,The_GetSuffix (),
 	                  The_GetColorRows ());
-	       if (ICanView.Result)
+	       if (ICanView.Result == Usr_I_CAN)
 		  HTM_Unsigned (Print.NumQsts.All);
 	       else
 		  Ico_PutIconNotVisible ();
@@ -1941,7 +1945,7 @@ static void TstPrn_ShowUsrPrints (struct Usr_Data *UsrDat)
 	    HTM_TD_Begin ("class=\"RT %s_%s LINE_LEFT %s\"",
 	                  ClassDat,The_GetSuffix (),
 	                  The_GetColorRows ());
-	       if (ICanView.Result)
+	       if (ICanView.Result == Usr_I_CAN)
 		 {
 		  if (Print.NumQsts.NotBlank)
 		     HTM_Unsigned (Print.NumQsts.NotBlank);
@@ -1956,7 +1960,7 @@ static void TstPrn_ShowUsrPrints (struct Usr_Data *UsrDat)
 	    HTM_TD_Begin ("class=\"RT %s_%s %s\"",
 	                  ClassDat,The_GetSuffix (),
 	                  The_GetColorRows ());
-	       if (ICanView.Result)
+	       if (ICanView.Result == Usr_I_CAN)
 		 {
 		  NumQstsBlank = Print.NumQsts.All - Print.NumQsts.NotBlank;
 		  if (NumQstsBlank)
@@ -1972,7 +1976,7 @@ static void TstPrn_ShowUsrPrints (struct Usr_Data *UsrDat)
 	    HTM_TD_Begin ("class=\"RT %s_%s LINE_LEFT %s\"",
 	                  ClassDat,The_GetSuffix (),
 	                  The_GetColorRows ());
-	       if (ICanView.Score)
+	       if (ICanView.Score == Usr_I_CAN)
 		 {
 		  HTM_Double2Decimals (Print.Score);
 		  HTM_Txt ("/");
@@ -1986,7 +1990,7 @@ static void TstPrn_ShowUsrPrints (struct Usr_Data *UsrDat)
 	    HTM_TD_Begin ("class=\"RT %s_%s %s\"",
 	                  ClassDat,The_GetSuffix (),
 	                  The_GetColorRows ());
-	       if (ICanView.Score)
+	       if (ICanView.Score == Usr_I_CAN)
 		  HTM_Double2Decimals (Print.NumQsts.All ? Print.Score /
 							   (double) Print.NumQsts.All :
 							   0.0);
@@ -1998,7 +2002,7 @@ static void TstPrn_ShowUsrPrints (struct Usr_Data *UsrDat)
 	    HTM_TD_Begin ("class=\"RT %s_%s LINE_LEFT %s\"",
 	                  ClassDat,The_GetSuffix (),
 	                  The_GetColorRows ());
-	       if (ICanView.Score)
+	       if (ICanView.Score == Usr_I_CAN)
 		  TstPrn_ComputeAndShowGrade (Print.NumQsts.All,Print.Score,Tst_SCORE_MAX);
 	       else
 		  Ico_PutIconNotVisible ();
@@ -2007,7 +2011,7 @@ static void TstPrn_ShowUsrPrints (struct Usr_Data *UsrDat)
 	    /* Link to show this test */
 	    HTM_TD_Begin ("class=\"RT LINE_LEFT %s\"",
 	                  The_GetColorRows ());
-	       if (ICanView.Result)
+	       if (ICanView.Result == Usr_I_CAN)
 		 {
 		  Frm_BeginForm (Gbl.Action.Act == ActSeeMyTstResCrs ? ActSeeOneTstResMe :
 								       ActSeeOneTstResOth);
@@ -2220,7 +2224,7 @@ void TstPrn_ShowOnePrint (void)
    if (Gbl.Usrs.Me.Role.Logged == Rol_STD)
       TstCfg_GetConfig ();	// To get visibility
    TstRes_CheckIfICanSeePrintResult (&Print,Gbl.Usrs.Other.UsrDat.UsrCod,&ICanView);
-   if (!ICanView.Result)	// I am not allowed to view this test
+   if (ICanView.Result == Usr_I_CAN_NOT)	// I am not allowed to view this test
       Err_NoPermissionExit ();
 
    /***** Get questions and user's answers of the test from database *****/
@@ -2241,7 +2245,7 @@ void TstPrn_ShowOnePrint (void)
 						       Usr_DONT_GET_PREFS,
 						       Usr_DONT_GET_ROLE_IN_CRS))
 	    Err_WrongUserExit ();
-	 if (!Usr_CheckIfICanViewTstExaMchResult (&Gbl.Usrs.Other.UsrDat))
+	 if (Usr_CheckIfICanViewTstExaMchResult (&Gbl.Usrs.Other.UsrDat) == Usr_I_CAN_NOT)
 	    Err_NoPermissionExit ();
 
 	 /* User */
@@ -2333,7 +2337,7 @@ void TstPrn_ShowOnePrint (void)
 
 	    HTM_TD_Begin ("class=\"LB DAT_%s\"",
 			  The_GetSuffix ());
-	       if (ICanView.Score)
+	       if (ICanView.Score == Usr_I_CAN)
 		 {
 		  HTM_STRONG_Begin ();
 		     HTM_Double2Decimals (Print.Score);
@@ -2357,7 +2361,7 @@ void TstPrn_ShowOnePrint (void)
 
 	    HTM_TD_Begin ("class=\"LB DAT_%s\"",
 			  The_GetSuffix ());
-	       if (ICanView.Score)
+	       if (ICanView.Score == Usr_I_CAN)
 		 {
 		  HTM_STRONG_Begin ();
 		     TstPrn_ComputeAndShowGrade (Print.NumQsts.All,Print.Score,Tst_SCORE_MAX);
@@ -2412,13 +2416,14 @@ static void TstRes_CheckIfICanSeePrintResult (const struct TstPrn_Print *Print,
       case Rol_STD:
 	 // Depends on whether the print is sent or not
 	 // if the print is not sent ==> I can not view results
-	 ICanView->Result = Print->Sent && Usr_ItsMe (UsrCod) == Usr_ME;
+	 ICanView->Result = (Print->Sent && Usr_ItsMe (UsrCod) == Usr_ME) ? Usr_I_CAN :
-
+									    Usr_I_CAN_NOT;
-	 if (ICanView->Result)
+	 if (ICanView->Result == Usr_I_CAN)
 	    // Depends on 5 visibility icons associated to tests
-	    ICanView->Score = TstVis_IsVisibleTotalScore (TstCfg_GetConfigVisibility ());
+	    ICanView->Score = TstVis_IsVisibleTotalScore (TstCfg_GetConfigVisibility ()) ? Usr_I_CAN :
+											   Usr_I_CAN_NOT;
 	 else
-	    ICanView->Score = false;
+	    ICanView->Score = Usr_I_CAN_NOT;
 	 break;
       case Rol_NET:
       case Rol_TCH:
@@ -2430,15 +2435,16 @@ static void TstRes_CheckIfICanSeePrintResult (const struct TstPrn_Print *Print,
 	 // if teachers are not allowed ==> I can not view results (except if the print is mine)
 	 ICanView->Result =
 	 ICanView->Score  = Print->Sent &&
-	                    (Print->AllowTeachers || Usr_ItsMe (UsrCod) == Usr_ME);
+	                    (Print->AllowTeachers || Usr_ItsMe (UsrCod) == Usr_ME) ? Usr_I_CAN :
+										     Usr_I_CAN_NOT;
 	 break;
       case Rol_SYS_ADM:
 	 ICanView->Result =
-	 ICanView->Score  = true;
+	 ICanView->Score  = Usr_I_CAN;
 	 break;
       default:
 	 ICanView->Result =
-	 ICanView->Score  = false;
+	 ICanView->Score  = Usr_I_CAN_NOT;
 	 break;
      }
   }

swad_test_print.h

@@ -131,7 +131,7 @@ void TstPrn_ShowGrade (double Grade,double MaxGrade);
 void TstPrn_WriteAnswersExam (struct Usr_Data *UsrDat,
                               const struct TstPrn_PrintedQuestion *PrintedQuestion,
 			      struct Qst_Question *Question,
-			      bool ICanView[TstVis_NUM_ITEMS_VISIBILITY],
+			      Usr_ICan_t ICanView[TstVis_NUM_ITEMS_VISIBILITY],
 			      const char *ClassTxt,
 			      const char *ClassFeedback);
 

swad_timeline_comment.c

@@ -877,7 +877,7 @@ static void TmlCom_ReqRemComm (struct Tml_Timeline *Timeline)
    TmlCom_GetCommDataByCod (&Com);
 
    /***** Do some checks *****/
-   if (!TmlUsr_CheckIfICanRemove (Com.PubCod,Com.UsrCod))
+   if (TmlUsr_CheckIfICanRemove (Com.PubCod,Com.UsrCod) == Usr_I_CAN_NOT)
      {
       Med_MediaDestructor (&Com.Content.Media);
       return;

swad_timeline_favourite.c

@@ -135,7 +135,7 @@ static void TmlFav_FavNote (struct TmlNot_Note *Not)
    TmlNot_GetNoteDataByCod (Not);
 
    /***** Do some checks *****/
-   if (!TmlUsr_CheckIfICanFavSha (Not->NotCod,Not->UsrCod))
+   if (TmlUsr_CheckIfICanFavSha (Not->NotCod,Not->UsrCod) == Usr_I_CAN_NOT)
       return;
 
    /***** Trivial check: Have I faved this note? *****/
@@ -165,7 +165,7 @@ static void TmlFav_UnfNote (struct TmlNot_Note *Not)
    TmlNot_GetNoteDataByCod (Not);
 
    /***** Do some checks *****/
-   if (!TmlUsr_CheckIfICanFavSha (Not->NotCod,Not->UsrCod))
+   if (TmlUsr_CheckIfICanFavSha (Not->NotCod,Not->UsrCod) == Usr_I_CAN_NOT)
       return;
 
    /***** Trivial check: Have I faved this note? *****/
@@ -272,7 +272,7 @@ static void TmlFav_FavComm (struct TmlCom_Comment *Com)
    TmlCom_GetCommDataByCod (Com);
 
    /***** Do some checks *****/
-   if (!TmlUsr_CheckIfICanFavSha (Com->PubCod,Com->UsrCod))
+   if (TmlUsr_CheckIfICanFavSha (Com->PubCod,Com->UsrCod) == Usr_I_CAN_NOT)
      {
       Med_MediaDestructor (&Com->Content.Media);
       return;
@@ -311,7 +311,7 @@ static void TmlFav_UnfComm (struct TmlCom_Comment *Com)
    TmlCom_GetCommDataByCod (Com);
 
    /***** Do some checks *****/
-   if (!TmlUsr_CheckIfICanFavSha (Com->PubCod,Com->UsrCod))
+   if (TmlUsr_CheckIfICanFavSha (Com->PubCod,Com->UsrCod) == Usr_I_CAN_NOT)
      {
       Med_MediaDestructor (&Com->Content.Media);
       return;

swad_timeline_note.c

@@ -1010,7 +1010,7 @@ static void TmlNot_ReqRemNote (struct Tml_Timeline *Timeline)
    TmlNot_GetNoteDataByCod (&Not);
 
    /***** Do some checks *****/
-   if (!TmlUsr_CheckIfICanRemove (Not.NotCod,Not.UsrCod))
+   if (TmlUsr_CheckIfICanRemove (Not.NotCod,Not.UsrCod) == Usr_I_CAN_NOT)
       return;
 
    /***** Show question and button to remove note *****/