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(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         YAHOO.util.Event.addListener(question_bank.headercheckbox, 'change', 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
  70     init: function(Y, boxid) {
  71         // Find the radio buttons.
  72         qtype_chooser.radiobuttons = YAHOO.util.Dom.getElementsBy(
  73                 function(el) { return el.type == 'radio'; }, 'input' , boxid);
  74         qtype_chooser.labels = YAHOO.util.Dom.getElementsByClassName('qtypeoption', 'div', boxid);
  75
  76         // Find the submit button.
  77         qtype_chooser.submitbutton = document.getElementById(boxid + '_submit');
  78         qtype_chooser.enable_disable_submit();
  79
  80         // Add the event handlers.
  81         YAHOO.util.Event.addListener(boxid, 'click', qtype_chooser.enable_disable_submit);
  82         YAHOO.util.Event.addListener(boxid, 'key_down', qtype_chooser.enable_disable_submit);
  83         YAHOO.util.Event.addListener(boxid, 'key_up', qtype_chooser.enable_disable_submit);
  84         YAHOO.util.Event.addListener(boxid, 'dblclick', function(e) {
  85                 if (!qtype_chooser.submitbutton.disabled) {
  86                     M.core_scroll_manager.save_scroll_pos(Y, Y.one(qtype_chooser.submitbutton));
  87                     qtype_chooser.submitbutton.form.submit();
  88                 }
  89             });
  90
  91         YAHOO.util.Event.onDOMReady(qtype_chooser.init_container);
  92         Y.on('submit', function(e) {
  93             M.core_scroll_manager.save_scroll_pos(Y, Y.one(qtype_chooser.submitbutton));
  94         }, qtype_chooser.submitbutton.form);
  95     },
  96
  97     enable_disable_submit: function() {
  98         var ok = false;
  99         for (var i = 0; i < qtype_chooser.radiobuttons.length; i++) {
 100             if (qtype_chooser.radiobuttons[i].checked) {
 101                 ok = true;
 102                 YAHOO.util.Dom.addClass(qtype_chooser.labels[i], 'selected');
 103             } else {
 104                 YAHOO.util.Dom.removeClass(qtype_chooser.labels[i], 'selected');
 105             }
 106         }
 107         qtype_chooser.submitbutton.disabled = !ok;
 108     },
 109
 110     init_container: function() {
 111         if (!document.getElementById('qtypechoicecontainer')) {
 112             return;
 113         }
 114         var qtypechoicecontainer = document.getElementById('qtypechoicecontainer');
 115         qtypechoicecontainer.style.display = 'block';
 116         qtypechoicecontainer.parentNode.removeChild(qtypechoicecontainer);
 117         document.body.appendChild(qtypechoicecontainer);
 118         qtype_chooser.container = new YAHOO.widget.Dialog(qtypechoicecontainer, {
 119             constraintoviewport: true,
 120             visible: false,
 121             modal: true,
 122             fixedcenter: true,
 123             close: true,
 124             draggable: true,
 125             dragOnly: true,
 126             postmethod: 'form',
 127             zIndex: 1000
 128         });
 129         qtype_chooser.container.render();
 130
 131         YAHOO.util.Event.addListener('chooseqtypecancel', 'click', qtype_chooser.cancel_popup);
 132
 133         var addforms = YAHOO.util.Dom.getElementsBy(function(el) {
 134                 return /question\/addquestion\.php/.test(el.action); }, 'form', document.body);
 135         for (var i = 0; i < addforms.length; i++) {
 136             YAHOO.util.Event.addListener(addforms[i], 'submit', qtype_chooser.add_button_click);
 137         }
 138     },
 139
 140     add_button_click: function(e) {
 141         var form = document.getElementById('qtypeformdiv');
 142
 143         var oldhidden = YAHOO.util.Dom.getElementsBy(
 144                 function(el) { return el.type == 'hidden'; }, 'input', form);
 145         for (var i = 0; i < oldhidden.length; i++) {
 146             oldhidden[i].parentNode.removeChild(oldhidden[i]);
 147         }
 148
 149         var wantedhidden = YAHOO.util.Dom.getElementsBy(
 150                 function(el) { return el.type == 'hidden'; }, 'input', this);
 151         for (i = 0; i < wantedhidden.length; i++) {
 152             form.appendChild(wantedhidden[i].cloneNode(true));
 153         }
 154
 155         qtype_chooser.container.show();
 156         YAHOO.util.Event.preventDefault(e);
 157     },
 158
 159     cancel_popup: function(e) {
 160         qtype_chooser.container.hide();
 161         YAHOO.util.Event.preventDefault(e);
 162     }
 163 };