mirror of https://github.com/acanas/swad-core.git
521 lines
20 KiB
JavaScript
521 lines
20 KiB
JavaScript
// swad.js: javascript functions
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/*
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SWAD (Shared Workspace At a Distance),
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is a web platform developed at the University of Granada (Spain),
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and used to support university teaching.
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Copyright (C) 1999-2015 Antonio Cañas-Vargas
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University of Granada (SPAIN) (acanas@ugr.es)
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as
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published by the Free Software Foundation, either version 3 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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// Global variable used in refreshConnected()
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var ActionAJAX;
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// Global variables used in writeLocalTime()
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var secondsSince1970UTC;
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// Global variables used in writeClockConnected()
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var NumUsrsCon;
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var ListSeconds = new Array();
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var countClockConnected = 0;
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// Write a date in client local time
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function writeLocalDateFromUTC(id,secsSince1970UTC) {
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var d = new Date;
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var Yea;
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var Mon;
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var Day;
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var StrMon;
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var StrDay;
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d.setTime(secsSince1970UTC * 1000);
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Yea = d.getFullYear();
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Mon = d.getMonth() + 1;
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Day = d.getDate();
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StrMon = ((Mon < 10) ? '0' : '') + Mon;
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StrDay = ((Day < 10) ? '0' : '') + Day;
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document.getElementById(id).innerHTML = Yea + '/' + StrMon + '/' + StrDay;
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}
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/*************** Write a date-time in client local time **********************/
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// - id is the id of the HTML element in which date-time will be written
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// - secsSince1970UTC is the date-time to write in UTC UNIX time format
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// - separator is HTML code to write between date and time
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function writeLocalDateTimeFromUTC(id,secsSince1970UTC,separator) {
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var d = new Date;
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var Yea;
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var Mon;
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var Day;
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var Hou;
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var Min;
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var Sec;
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var StrMon;
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var StrDay;
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var StrHou;
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var StrMin;
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var StrSec;
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d.setTime(secsSince1970UTC * 1000);
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Yea = d.getFullYear();
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Mon = d.getMonth() + 1;
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Day = d.getDate();
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Hou = d.getHours();
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Min = d.getMinutes();
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Sec = d.getSeconds();
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StrMon = ((Mon < 10) ? '0' : '') + Mon;
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StrDay = ((Day < 10) ? '0' : '') + Day;
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StrHou = ((Hou < 10) ? '0' : '') + Hou;
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StrMin = ((Min < 10) ? '0' : '') + Min;
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StrSec = ((Sec < 10) ? '0' : '') + Sec;
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document.getElementById(id).innerHTML = Yea + '/' + StrMon + '/' + StrDay +
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separator +
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StrHou + ':' + StrMin + ':' + StrSec;
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}
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// Set local date-time form fields from UTC time
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function setLocalDateTimeFormFromUTC(id,secsSince1970UTC) {
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var d = new Date;
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var YearForm = document.getElementById(id+'Year');
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var Year;
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d.setTime(secsSince1970UTC * 1000);
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Year = d.getFullYear()
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for (var i=0; i<YearForm.options.length ; i++)
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if (YearForm.options[i].value == Year) {
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YearForm.options[i].selected = true;
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break;
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}
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document.getElementById(id+'Month' ).options[d.getMonth()+1].selected = true;
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document.getElementById(id+'Day' ).options[d.getDate() ].selected = true;
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document.getElementById(id+'Hour' ).options[d.getHours() ].selected = true;
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document.getElementById(id+'Minute').options[d.getMinutes()].selected = true;
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document.getElementById(id+'Second').options[d.getSeconds()].selected = true;
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}
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// Set UTC time from local date-time form fields
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function setUTCFromLocalDateTimeForm(id) {
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var d = new Date;
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// Important: set year first in order to work properly with leap years
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d.setFullYear(document.getElementById(id+'Year' ).value);
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d.setMonth (document.getElementById(id+'Month' ).value-1);
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d.setDate (document.getElementById(id+'Day' ).value);
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d.setHours (document.getElementById(id+'Hour' ).value);
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d.setMinutes (document.getElementById(id+'Minute').value);
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d.setSeconds (document.getElementById(id+'Second').value);
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d.setMilliseconds(0);
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document.getElementById(id+'TimeUTC').value = d.getTime() / 1000;
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}
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// Adjust a date form correcting days in the month
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function adjustDateForm (id) {
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var Days = 31;
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var YearForm = document.getElementById(id+'Year' );
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var MonthForm = document.getElementById(id+'Month');
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var DayForm = document.getElementById(id+'Day' );
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var Year = YearForm.options[YearForm.selectedIndex].value;
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if (MonthForm.options[2].selected) // Adjust days of february
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Days = ((((Year % 4) == 0) && ((Year % 100) != 0)) || ((Year % 400) == 0)) ? 29 : 28;
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else if (MonthForm.options[ 4].selected ||
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MonthForm.options[ 6].selected ||
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MonthForm.options[ 9].selected ||
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MonthForm.options[11].selected)
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Days = 30;
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if (DayForm.selectedIndex > Days)
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DayForm.options[Days].selected = true;
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for (var i=DayForm.options.length; i<=Days ; i++) { // Create new days
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var x = String (i);
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DayForm.options[i] = new Option(x,x);
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}
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for (var i=DayForm.options.length-1; i>Days; i--) // Remove days
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DayForm.options[i] = null;
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}
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// Set a the date in a date form to a specified date
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function setDateTo (elem,Day,Month,Year) {
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document.getElementById('StartYear' ).options[Year ].selected = true;
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document.getElementById('StartMonth').options[Month].selected = true;
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adjustDateForm (elem.form.StartDay,elem.form.StartMonth,elem.form.StartYear)
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document.getElementById('StartDay' ).options[Day ].selected = true;
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document.getElementById('EndYear' ).options[Year ].selected = true;
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document.getElementById('EndMonth').options[Month].selected = true;
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adjustDateForm (elem.form.EndDay,elem.form.EndMonth,elem.form.EndYear)
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document.getElementById('EndDay' ).options[Day ].selected = true;
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}
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// Write clock in client local time updated every minute
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function writeLocalClock() {
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var d = new Date;
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var H;
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var M;
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var StrH;
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var StrM;
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setTimeout('writeLocalTime()',60000);
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d.setTime(secondsSince1970UTC * 1000);
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secondsSince1970UTC += 60; // For next call
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H = d.getHours();
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M = d.getMinutes();
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StrH = ((H < 10) ? '0' : '') + H;
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StrM = ((M < 10) ? '0' : '') + M;
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document.getElementById('hm').innerHTML = StrH + ':' + StrM;
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}
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function writeClockConnected() {
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var BoxClock;
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var H;
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var M;
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var S;
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var StrM;
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var StrS;
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var PrintableClock;
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countClockConnected++;
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countClockConnected %= 10;
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for (var i=0; i<NumUsrsCon; i++) {
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BoxClock = document.getElementById('hm'+i);
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if (BoxClock) {
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ListSeconds[i] += 1;
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if (!countClockConnected) { // Print after 10 seconds
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M = Math.floor(ListSeconds[i] / 60);
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if (M >= 60) {
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H = Math.floor(M / 60);
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M %= 60;
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} else
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H = 0;
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S = ListSeconds[i] % 60;
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if (H != 0) {
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StrM = ((M < 10) ? '0' : '') + M;
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StrS = ((S < 10) ? '0' : '') + S;
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PrintableClock = H + ':' + StrM + ''' + StrS + '"';
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} else if (M != 0) {
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StrS = ((S < 10) ? '0' : '') + S;
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PrintableClock = M + ''' + StrS + '"';
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} else
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PrintableClock = S + '"';
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BoxClock.innerHTML = PrintableClock;
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}
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}
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}
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setTimeout('writeClockConnected()',1000); // refresh after 1 second
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}
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// Automatic refresh of connected users using AJAX. This function must be called from time to time
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var objXMLHttpReqCon = false;
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function refreshConnected() {
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objXMLHttpReqCon = AJAXCreateObject();
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if (objXMLHttpReqCon) {
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var RefreshParams = RefreshParamNxtActCon + '&' + RefreshParamIdSes + '&' + RefreshParamCrsCod;
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objXMLHttpReqCon.onreadystatechange = readConnUsrsData; // onreadystatechange must be lowercase
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objXMLHttpReqCon.open('POST',ActionAJAX,true);
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objXMLHttpReqCon.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
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objXMLHttpReqCon.send(RefreshParams);
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}
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}
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// Automatic refresh of last clicks using AJAX. This function must be called from time to time
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var objXMLHttpReqLog = false;
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function refreshLastClicks() {
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objXMLHttpReqLog = AJAXCreateObject();
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if (objXMLHttpReqLog) {
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var RefreshParams = RefreshParamNxtActLog + '&' + RefreshParamIdSes + '&' + RefreshParamCrsCod;
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objXMLHttpReqLog.onreadystatechange = readLastClicksData; // onreadystatechange must be lowercase
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objXMLHttpReqLog.open('POST',ActionAJAX,true);
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objXMLHttpReqLog.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
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objXMLHttpReqLog.send(RefreshParams);
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}
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}
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// Create AJAX object (try is unknown in earlier versions of Netscape, but works in IE5)
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function AJAXCreateObject() {
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var obj = false;
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if (window.XMLHttpRequest) { // Mozilla, Safari,...
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obj = new XMLHttpRequest();
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} else if (window.ActiveXObject) { // IE
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try {
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obj = new ActiveXObject('Msxml2.XMLHTTP');
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} catch (e) {
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try {
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obj = new ActiveXObject('Microsoft.XMLHTTP');
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} catch (e) {}
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}
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}
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return obj;
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}
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// Receives and show connected users data
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function readConnUsrsData() {
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if (objXMLHttpReqCon.readyState == 4) { // Check if data have been received
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if (objXMLHttpReqCon.status == 200) {
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var endOfDelay = objXMLHttpReqCon.responseText.indexOf('|',0); // Get separator position
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var endOfNotif = objXMLHttpReqCon.responseText.indexOf('|',endOfDelay+1); // Get separator position
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var endOfGblCon = objXMLHttpReqCon.responseText.indexOf('|',endOfNotif+1); // Get separator position
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var endOfCrsCon = objXMLHttpReqCon.responseText.indexOf('|',endOfGblCon+1); // Get separator position
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var endOfNumUsrs = objXMLHttpReqCon.responseText.indexOf('|',endOfCrsCon+1); // Get separator position
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var delay = parseInt(objXMLHttpReqCon.responseText.substring(0,endOfDelay)); // Get refresh delay
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var htmlNotif = objXMLHttpReqCon.responseText.substring(endOfDelay +1,endOfNotif); // Get HTML code for new notifications
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var htmlGblCon = objXMLHttpReqCon.responseText.substring(endOfNotif +1,endOfGblCon); // Get HTML code for connected
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var htmlCrsCon = objXMLHttpReqCon.responseText.substring(endOfGblCon+1,endOfCrsCon); // Get HTML code for course connected
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var NumUsrsStr = objXMLHttpReqCon.responseText.substring(endOfCrsCon+1,endOfNumUsrs); // Get number of users
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var startOfUsr;
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var endOfUsr;
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NumUsrsCon = (NumUsrsStr.length ? parseInt(NumUsrsStr) : 0);
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var divNewNotif = document.getElementById('msg'); // Access to new notifications DIV
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if (divNewNotif)
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divNewNotif.innerHTML = (htmlNotif.length) ? htmlNotif : ''; // Update new notifications DIV
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var divGblConnected = document.getElementById('globalconnected'); // Access to global connected DIV
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if (divGblConnected)
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divGblConnected.innerHTML = htmlGblCon; // Update global connected DIV
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if (htmlCrsCon.length) {
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var divCrsConnected = document.getElementById('courseconnected'); // Access to course connected DIV
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if (divCrsConnected) {
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divCrsConnected.innerHTML = htmlCrsCon; // Update course connected DIV
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countClockConnected = 0; // Don't refresh again using writeClockConnected until past 10 seconds
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startOfUsr = endOfNumUsrs + 1;
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for (var NumUsr=0; NumUsr<NumUsrsCon; NumUsr++) {
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endOfUsr = objXMLHttpReqCon.responseText.indexOf('|',startOfUsr+1);
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ListSeconds[NumUsr] = parseInt(objXMLHttpReqCon.responseText.substring(startOfUsr,endOfUsr));
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startOfUsr = endOfUsr + 1;
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}
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}
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}
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if (delay >= 60000) // If refresh slower than 1 time each 60 seconds, do refresh; else abort
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setTimeout('refreshConnected()',delay);
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}
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}
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}
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// Receives and show last clicks data
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function readLastClicksData() {
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if (objXMLHttpReqLog.readyState == 4) { // Check if data have been received
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if (objXMLHttpReqLog.status == 200) {
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var endOfDelay = objXMLHttpReqLog.responseText.indexOf('|',0); // Get separator position
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var endOfLastClicks = objXMLHttpReqLog.responseText.indexOf('|',endOfDelay+1); // Get separator position
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var delay = parseInt(objXMLHttpReqLog.responseText.substring(0,endOfDelay)); // Get refresh delay
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var htmlLastClicks = objXMLHttpReqLog.responseText.substring(endOfDelay+1); // Get HTML code for last clicks
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var divLastClicks = document.getElementById('lastclicks'); // Access to last click DIV
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if (divLastClicks)
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divLastClicks.innerHTML = htmlLastClicks; // Update global connected DIV
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if (delay > 200) // If refresh slower than 1 time each 0.2 seconds, do refresh; else abort
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setTimeout('refreshLastClicks()',delay);
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}
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}
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}
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// Zoom a user's photograph
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function zoom(imagen,urlPhoto,shortName) {
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var xPos = imagen.offsetLeft;
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var yPos = imagen.offsetTop;
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var tempEl = imagen.offsetParent;
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while (tempEl != null) {
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xPos += tempEl.offsetLeft;
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yPos += tempEl.offsetTop;
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tempEl = tempEl.offsetParent;
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}
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xPos -= (187+15);
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yPos -= ((250+15)/2);
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if (yPos < 0)
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yPos = 0;
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document.getElementById('zoomLyr').style.left = xPos + 'px';
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document.getElementById('zoomLyr').style.top = yPos + 'px';
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document.getElementById('zoomImg').src = urlPhoto;
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document.getElementById('zoomTxt').innerHTML = '<span class="ZOOM_TXT">' + shortName + '</span>';
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}
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// Exit from zooming a user's photograph
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function noZoom(imagen) {
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var xPos = -(187+15);
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var yPos = -(250+15+110);
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document.getElementById('zoomTxt').innerHTML = '';
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document.getElementById('zoomImg').src='/icon/_.gif';
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document.getElementById('zoomLyr').style.left = xPos + 'px';
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document.getElementById('zoomLyr').style.top = yPos + 'px';
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}
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// Select or unselect a radio element in a form
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function selectUnselectRadio (radio,groupRadios,numRadiosInGroup){
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if (radio.IsChecked) radio.checked = false;
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radio.IsChecked = !radio.IsChecked;
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for (var i=0; i<numRadiosInGroup; i++)
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if (groupRadios[i] != radio) groupRadios[i].IsChecked = 0;
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}
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// Activate a parent checkbox when all children checkboxes are activated
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// Deactivate a parent checkbox when any child checkbox is deactivated
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function checkParent(CheckBox, MainCheckbox) {
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var IsChecked = true, i, Formul = CheckBox.form;
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for (i=0; i<Formul.elements.length; i++)
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if (Formul.elements[i].name == CheckBox.name)
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if (!(Formul.elements[i].checked)) { IsChecked = false; break; }
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Formul[MainCheckbox].checked = IsChecked;
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}
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// Activate all children checkboxes when parent checkbox is activated
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// Deactivate all children checkboxes when parent checkbox is deactivated
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function togglecheckChildren(MainCheckbox, GroupCheckboxes) {
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var i, Formul = MainCheckbox.form;
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for (i=0; i<Formul.elements.length; i++)
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if (Formul.elements[i].name == GroupCheckboxes) Formul.elements[i].checked = MainCheckbox.checked;
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}
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// Deactivate a parent checkbox when any child checkbox is activated
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// Activate a parent checkbox when all children checkboxes are deactivated
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function uncheckParent(CheckBox, MainCheckbox) {
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var IsChecked = false, i, Formul = CheckBox.form;
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for (i=0; i<Formul.elements.length; i++)
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if (Formul.elements[i].name == CheckBox.name)
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if (Formul.elements[i].checked) { IsChecked = true; break; }
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Formul[MainCheckbox].checked = !IsChecked;
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}
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// Deactivate all children checkboxes when parent checkbox is activated
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function uncheckChildren(MainCheckbox, GroupCheckboxes) {
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var i, Formul = MainCheckbox.form;
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if (MainCheckbox.checked)
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for (i=0; i<Formul.elements.length; i++)
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if (Formul.elements[i].name == GroupCheckboxes) Formul.elements[i].checked = false;
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}
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// Change text of a test descriptor
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function changeTxtTag(NumTag){
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var Sel = document.getElementById('SelDesc'+NumTag);
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document.getElementById('TagTxt'+NumTag).value = Sel.options[Sel.selectedIndex].value;
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}
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// Change selectors of test descriptors
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function changeSelTag(NumTag){
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var Sel = document.getElementById('SelDesc'+NumTag);
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var Txt = document.getElementById('TagTxt'+NumTag);
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for (var i=0; i<Sel.options.length-1 ; i++)
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if (Sel.options[i].value.toUpperCase() == Txt.value.toUpperCase()){
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Sel.options[i].selected = true;
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Txt.value = Sel.options[i].value;
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break;
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}
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if (i == Sel.options.length-1) // End reached without matching
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Sel.options[i].selected = true;
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}
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// Activate or deactivate answer types of a test question
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function enableDisableAns(Formul) {
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var Tst_ANS_INT = 0;
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var Tst_ANS_FLOAT = 1;
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var Tst_ANS_TRUE_FALSE = 2;
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var Tst_ANS_UNIQUE_CHOICE = 3;
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var Tst_ANS_MULTIPLE_CHOICE = 4;
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var Tst_ANS_TEXT = 5;
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if (Formul.AnswerType[Tst_ANS_INT].checked){
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for (var i=0; i<Formul.elements.length; i++)
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if (Formul.elements[i].name == 'AnsInt') Formul.elements[i].disabled = false;
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else if (Formul.elements[i].name == 'AnsMulti' ||
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Formul.elements[i].name == 'AnsFloatMin' ||
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Formul.elements[i].name == 'AnsFloatMax' ||
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Formul.elements[i].name == 'AnsTF' ||
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Formul.elements[i].name == 'AnsUni' ||
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|
Formul.elements[i].name == 'Shuffle') Formul.elements[i].disabled = true;
|
|
else enableDisableContAns(Formul.elements[i],true);
|
|
}
|
|
else if (Formul.AnswerType[Tst_ANS_FLOAT].checked){
|
|
for (var i=0; i<Formul.elements.length; i++)
|
|
if (Formul.elements[i].name == 'AnsFloatMin' ||
|
|
Formul.elements[i].name == 'AnsFloatMax') Formul.elements[i].disabled = false;
|
|
else if (Formul.elements[i].name == 'AnsInt' ||
|
|
Formul.elements[i].name == 'AnsTF' ||
|
|
Formul.elements[i].name == 'AnsUni' ||
|
|
Formul.elements[i].name == 'AnsMulti' ||
|
|
Formul.elements[i].name == 'Shuffle') Formul.elements[i].disabled = true;
|
|
else enableDisableContAns(Formul.elements[i],true);
|
|
}
|
|
else if (Formul.AnswerType[Tst_ANS_TRUE_FALSE].checked){
|
|
for (var i=0; i<Formul.elements.length; i++)
|
|
if (Formul.elements[i].name == 'AnsTF') Formul.elements[i].disabled = false;
|
|
else if (Formul.elements[i].name == 'AnsInt' ||
|
|
Formul.elements[i].name == 'AnsFloatMin' ||
|
|
Formul.elements[i].name == 'AnsFloatMax' ||
|
|
Formul.elements[i].name == 'AnsUni' ||
|
|
Formul.elements[i].name == 'AnsMulti' ||
|
|
Formul.elements[i].name == 'Shuffle') Formul.elements[i].disabled = true;
|
|
else enableDisableContAns(Formul.elements[i],true);
|
|
}
|
|
else if (Formul.AnswerType[Tst_ANS_UNIQUE_CHOICE].checked){
|
|
for (var i=0; i<Formul.elements.length; i++)
|
|
if (Formul.elements[i].name == 'AnsUni' ||
|
|
Formul.elements[i].name == 'Shuffle') Formul.elements[i].disabled = false;
|
|
else if (Formul.elements[i].name == 'AnsInt' ||
|
|
Formul.elements[i].name == 'AnsFloatMin' ||
|
|
Formul.elements[i].name == 'AnsFloatMax' ||
|
|
Formul.elements[i].name == 'AnsTF' ||
|
|
Formul.elements[i].name == 'AnsMulti') Formul.elements[i].disabled = true;
|
|
else enableDisableContAns(Formul.elements[i],false);
|
|
}
|
|
else if (Formul.AnswerType[Tst_ANS_MULTIPLE_CHOICE].checked){
|
|
for (var i=0; i<Formul.elements.length; i++)
|
|
if (Formul.elements[i].name == 'AnsMulti' ||
|
|
Formul.elements[i].name == 'Shuffle') Formul.elements[i].disabled = false;
|
|
else if (Formul.elements[i].name == 'AnsInt' ||
|
|
Formul.elements[i].name == 'AnsFloatMin' ||
|
|
Formul.elements[i].name == 'AnsFloatMax' ||
|
|
Formul.elements[i].name == 'AnsTF' ||
|
|
Formul.elements[i].name == 'AnsUni') Formul.elements[i].disabled = true;
|
|
else enableDisableContAns(Formul.elements[i],false);
|
|
}
|
|
else if (Formul.AnswerType[Tst_ANS_TEXT].checked){
|
|
for (var i=0; i<Formul.elements.length; i++)
|
|
if (Formul.elements[i].name == 'AnsInt' ||
|
|
Formul.elements[i].name == 'AnsFloatMin' ||
|
|
Formul.elements[i].name == 'AnsFloatMax' ||
|
|
Formul.elements[i].name == 'AnsTF' ||
|
|
Formul.elements[i].name == 'AnsUni' ||
|
|
Formul.elements[i].name == 'AnsMulti') Formul.elements[i].disabled = true;
|
|
else enableDisableContAns(Formul.elements[i],false);
|
|
}
|
|
}
|
|
|
|
// Activate or deactivate response contents of a test question
|
|
function enableDisableContAns(Elem,IsDisabled) {
|
|
var Tst_MAX_OPTIONS_PER_QUESTION = 10;
|
|
for (var i=0; i<Tst_MAX_OPTIONS_PER_QUESTION; i++)
|
|
if (Elem.name == ('AnsStr'+i) || Elem.name == ('FbStr'+i))
|
|
Elem.disabled = IsDisabled;
|
|
}
|
|
|
|
// Selection of statistics of current course ****/
|
|
function enableDetailedClicks () {
|
|
document.getElementById('CountType').disabled = true;
|
|
document.getElementById('GroupedBy').disabled = true;
|
|
document.getElementById('RowsPage').disabled = false;
|
|
}
|
|
function disableDetailedClicks () {
|
|
document.getElementById('CountType').disabled = false;
|
|
document.getElementById('GroupedBy').disabled = false;
|
|
document.getElementById('RowsPage').disabled = true;
|
|
}
|