question/qbank.js

   1 // This file is part of Moodle - http://moodle.org/
   2 //
   3 // Moodle is free software: you can redistribute it and/or modify
   4 // it under the terms of the GNU General Public License as published by
   5 // the Free Software Foundation, either version 3 of the License, or
   6 // (at your option) any later version.
   7 //
   8 // Moodle is distributed in the hope that it will be useful,
   9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 // GNU General Public License for more details.
  12 //
  13 // You should have received a copy of the GNU General Public License
  14 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  15
  16 /**
  17  * JavaScript belonging to question_bank_view.
  18  *
  19  * This script is included by question_bank_view and other parts of question/editlib.php.
  20  *
  21  * @package    moodlecore
  22  * @subpackage questionbank
  23  * @copyright  2009 Tim Hunt
  24  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  25  */
  26
  27
  28 question_bank = {
  29     strselectall: '',
  30     strdeselectall: '',
  31     headercheckbox: null,
  32     firstcheckbox: null,
  33
  34     init_checkbox_column: function(Y, strselectall, strdeselectall, firstcbid) {
  35         question_bank.strselectall = strselectall;
  36         question_bank.strdeselectall = strdeselectall;
  37
  38         // Find the header checkbox, and initialise it.
  39         question_bank.headercheckbox = document.getElementById('qbheadercheckbox');
  40         question_bank.headercheckbox.disabled = false;
  41         question_bank.headercheckbox.title = strselectall;
  42
  43         // Find the first real checkbox.
  44         question_bank.firstcheckbox = document.getElementById(firstcbid);
  45
  46         // Add the event handler.
  47         Y.YUI2.util.Event.addListener(question_bank.headercheckbox, 'click', question_bank.header_checkbox_click);
  48     },
  49
  50     header_checkbox_click: function() {
  51         if (question_bank.firstcheckbox.checked) {
  52             select_all_in_element_with_id('categoryquestions', '');
  53             question_bank.headercheckbox.title = question_bank.strselectall;
  54         } else {
  55             select_all_in_element_with_id('categoryquestions', 'checked');
  56             question_bank.headercheckbox.title = question_bank.strdeselectall;
  57         }
  58         question_bank.headercheckbox.checked = false;
  59     }
  60 };
  61
  62 // JavaScript to make the list of question types pop-up when you click an add
  63 // add question button.
  64 qtype_chooser = {
  65     radiobuttons: [],
  66     labels: [],
  67     container: null,
  68     submitbutton: null,
  69     yui3: null,
  70
  71     init: function(Y, boxid) {
  72         // Store Y reference.
  73         qtype_chooser.yui3 = Y;
  74         // Find the radio buttons.
  75         qtype_chooser.radiobuttons = Y.YUI2.util.Dom.getElementsBy(
  76                 function(el) { return el.type == 'radio'; }, 'input' , boxid);
  77         qtype_chooser.labels = Y.YUI2.util.Dom.getElementsByClassName('qtypeoption', 'div', boxid);
  78
  79         // Find the submit button.
  80         qtype_chooser.submitbutton = document.getElementById(boxid + '_submit');
  81         qtype_chooser.enable_disable_submit();
  82
  83         // Add the event handlers.
  84         Y.YUI2.util.Event.addListener(boxid, 'click', qtype_chooser.enable_disable_submit);
  85         Y.YUI2.util.Event.addListener(boxid, 'key_down', qtype_chooser.enable_disable_submit);
  86         Y.YUI2.util.Event.addListener(boxid, 'key_up', qtype_chooser.enable_disable_submit);
  87         Y.YUI2.util.Event.addListener(boxid, 'dblclick', function(e) {
  88                 if (!qtype_chooser.submitbutton.disabled) {
  89                     M.core_scroll_manager.save_scroll_pos(Y, Y.one(qtype_chooser.submitbutton));
  90                     qtype_chooser.submitbutton.form.submit();
  91                 }
  92             });
  93
  94         Y.YUI2.util.Event.onDOMReady(qtype_chooser.init_container);
  95         Y.on('submit', function(e) {
  96             M.core_scroll_manager.save_scroll_pos(Y, Y.one(qtype_chooser.submitbutton));
  97         }, qtype_chooser.submitbutton.form);
  98     },
  99
 100     enable_disable_submit: function() {
 101         var Y = qtype_chooser.yui3;
 102         var ok = false;
 103         for (var i = 0; i < qtype_chooser.radiobuttons.length; i++) {
 104             if (qtype_chooser.radiobuttons[i].checked) {
 105                 ok = true;
 106                 Y.YUI2.util.Dom.addClass(qtype_chooser.labels[i], 'selected');
 107             } else {
 108                 Y.YUI2.util.Dom.removeClass(qtype_chooser.labels[i], 'selected');
 109             }
 110         }
 111         qtype_chooser.submitbutton.disabled = !ok;
 112     },
 113
 114     init_container: function() {
 115         var Y = qtype_chooser.yui3;
 116         if (!document.getElementById('qtypechoicecontainer')) {
 117             return;
 118         }
 119         var qtypechoicecontainer = document.getElementById('qtypechoicecontainer');
 120         qtypechoicecontainer.style.display = 'block';
 121         qtypechoicecontainer.parentNode.removeChild(qtypechoicecontainer);
 122         document.body.appendChild(qtypechoicecontainer);
 123         qtype_chooser.container = new Y.YUI2.widget.Dialog(qtypechoicecontainer, {
 124             constraintoviewport: true,
 125             visible: false,
 126             modal: true,
 127             fixedcenter: true,
 128             close: true,
 129             draggable: true,
 130             dragOnly: true,
 131             postmethod: 'form',
 132             zIndex: 1000
 133         });
 134         qtype_chooser.container.render();
 135
 136         Y.YUI2.util.Event.addListener('chooseqtypecancel', 'click', qtype_chooser.cancel_popup);
 137
 138         var addforms = Y.YUI2.util.Dom.getElementsBy(function(el) {
 139                 return /question\/addquestion\.php/.test(el.action); }, 'form', document.body);
 140         for (var i = 0; i < addforms.length; i++) {
 141             Y.YUI2.util.Event.addListener(addforms[i], 'submit', qtype_chooser.add_button_click);
 142         }
 143     },
 144
 145     add_button_click: function(e) {
 146         var Y = qtype_chooser.yui3;
 147         var form = document.getElementById('qtypeformdiv');
 148
 149         var oldhidden = Y.YUI2.util.Dom.getElementsBy(
 150                 function(el) { return el.type == 'hidden'; }, 'input', form);
 151         for (var i = 0; i < oldhidden.length; i++) {
 152             oldhidden[i].parentNode.removeChild(oldhidden[i]);
 153         }
 154
 155         var wantedhidden = Y.YUI2.util.Dom.getElementsBy(
 156                 function(el) { return el.type == 'hidden'; }, 'input', this);
 157         for (i = 0; i < wantedhidden.length; i++) {
 158             form.appendChild(wantedhidden[i].cloneNode(true));
 159         }
 160
 161         qtype_chooser.container.show();
 162         Y.YUI2.util.Event.preventDefault(e);
 163     },
 164
 165     cancel_popup: function(e) {
 166         var Y = qtype_chooser.yui3;
 167         qtype_chooser.container.hide();
 168         Y.YUI2.util.Event.preventDefault(e);
 169     }
 170 };