question/qbank.js

   1 // This script is included by question_bank_view and other parts of question/editlib.php.
   2
   3 // JavaScript belonging to question_bank_view.
   4 question_bank = {
   5     strselectall: '',
   6     strdeselectall: '',
   7     headercheckbox: null,
   8     firstcheckbox: null,
   9
  10     init_checkbox_column: function(strselectall, strdeselectall, firstcbid) {
  11         question_bank.strselectall = strselectall;
  12         question_bank.strdeselectall = strdeselectall;
  13
  14         // Find the header checkbox, and initialise it.
  15         question_bank.headercheckbox = document.getElementById('qbheadercheckbox');
  16         question_bank.headercheckbox.disabled = false;
  17         question_bank.headercheckbox.title = strselectall;
  18
  19         // Find the first real checkbox.
  20         question_bank.firstcheckbox = document.getElementById(firstcbid);
  21
  22         // Add the event handler.
  23         YAHOO.util.Event.addListener(question_bank.headercheckbox, 'change', question_bank.header_checkbox_click);
  24     },
  25
  26     header_checkbox_click: function() {
  27         if (question_bank.firstcheckbox.checked) {
  28             select_all_in_element_with_id('categoryquestions', '');
  29             question_bank.headercheckbox.title = question_bank.strselectall;
  30         } else {
  31             select_all_in_element_with_id('categoryquestions', 'checked');
  32             question_bank.headercheckbox.title = question_bank.strdeselectall;
  33         }
  34         question_bank.headercheckbox.checked = false;
  35     }
  36 };
  37
  38 // JavaScript to make the list of question types pop-up when you click an add
  39 // add question button.
  40 qtype_chooser = {
  41     radiobuttons: [],
  42     labels: [],
  43     container: null,
  44     submitbutton: null,
  45
  46     init: function(boxid) {
  47         // Find the radio buttons.
  48         qtype_chooser.radiobuttons = YAHOO.util.Dom.getElementsBy(
  49                 function(el) { return el.type == 'radio'; }, 'input' , boxid);
  50         qtype_chooser.labels = YAHOO.util.Dom.getElementsByClassName('qtypeoption', 'div', boxid);
  51
  52         // Find the submit button.
  53         qtype_chooser.submitbutton = document.getElementById(boxid + '_submit');
  54         qtype_chooser.enable_disable_submit();
  55
  56         // Add the event handlers.
  57         YAHOO.util.Event.addListener(boxid, 'click', qtype_chooser.enable_disable_submit);
  58         YAHOO.util.Event.addListener(boxid, 'key_down', qtype_chooser.enable_disable_submit);
  59         YAHOO.util.Event.addListener(boxid, 'key_up', qtype_chooser.enable_disable_submit);
  60         YAHOO.util.Event.addListener(boxid, 'dblclick', qtype_chooser.double_click);
  61
  62         YAHOO.util.Event.onDOMReady(qtype_chooser.init_container);
  63     },
  64
  65     enable_disable_submit: function() {
  66         var ok = false;
  67         for (var i = 0; i < qtype_chooser.radiobuttons.length; i++) {
  68             if (qtype_chooser.radiobuttons[i].checked) {
  69                 ok = true;
  70                 YAHOO.util.Dom.addClass(qtype_chooser.labels[i], 'selected');
  71             } else {
  72                 YAHOO.util.Dom.removeClass(qtype_chooser.labels[i], 'selected');
  73             }
  74         }
  75         qtype_chooser.submitbutton.disabled = !ok;
  76     },
  77
  78     double_click: function() {
  79         if (!qtype_chooser.submitbutton.disabled) {
  80             qtype_chooser.submitbutton.form.submit();
  81         }
  82     },
  83
  84     init_container: function() {
  85         if (!document.getElementById('qtypechoicecontainer')) {
  86             return;
  87         }
  88         var qtypechoicecontainer = document.getElementById('qtypechoicecontainer');
  89         qtypechoicecontainer.style.display = 'block';
  90         qtypechoicecontainer.parentNode.removeChild(qtypechoicecontainer);
  91         document.body.appendChild(qtypechoicecontainer);
  92         qtype_chooser.container = new YAHOO.widget.Dialog(qtypechoicecontainer, {
  93             constraintoviewport: true,
  94             visible: false,
  95             modal: true,
  96             fixedcenter: true,
  97             close: true,
  98             draggable: true,
  99             dragOnly: true,
 100             postmethod: 'form',
 101             zIndex: 1000
 102         });
 103         qtype_chooser.container.render();
 104
 105         YAHOO.util.Event.addListener('chooseqtypecancel', 'click', qtype_chooser.cancel_popup);
 106
 107         var addforms = YAHOO.util.Dom.getElementsBy(function(el) {
 108                 return /question\/addquestion\.php/.test(el.action); }, 'form', document.body);
 109         for (var i = 0; i < addforms.length; i++) {
 110             YAHOO.util.Event.addListener(addforms[i], 'submit', qtype_chooser.add_button_click);
 111         }
 112     },
 113
 114     add_button_click: function(e) {
 115         var form = document.getElementById('qtypeformdiv');
 116
 117         var oldhidden = YAHOO.util.Dom.getElementsBy(
 118                 function(el) { return el.type == 'hidden'; }, 'input', form);
 119         for (var i = 0; i < oldhidden.length; i++) {
 120             oldhidden[i].parentNode.removeChild(oldhidden[i]);
 121         }
 122
 123         var wantedhidden = YAHOO.util.Dom.getElementsBy(
 124                 function(el) { return el.type == 'hidden'; }, 'input', this);
 125         for (i = 0; i < wantedhidden.length; i++) {
 126             form.appendChild(wantedhidden[i].cloneNode(true));
 127         }
 128
 129         qtype_chooser.container.show();
 130         YAHOO.util.Event.preventDefault(e);
 131     },
 132
 133     cancel_popup: function(e) {
 134         qtype_chooser.container.hide();
 135         YAHOO.util.Event.preventDefault(e);
 136     }
 137 };