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   1  var SELECTORS = {
   2      CREATENEWQUESTION: 'div.createnewquestion',
   3      CREATENEWQUESTIONFORM: 'div.createnewquestion form',
   4      CHOOSERDIALOGUE: 'div.chooserdialogue',
   5      CHOOSERHEADER: 'div.choosertitle'
   6  };
   7  
   8  function Chooser() {
   9      Chooser.superclass.constructor.apply(this, arguments);
  10  }
  11  
  12  Y.extend(Chooser, M.core.chooserdialogue, {
  13      initializer: function() {
  14          Y.all('form').each(function(node) {
  15              if (/question\/addquestion\.php/.test(node.getAttribute('action'))) {
  16                  node.on('submit', this.displayQuestionChooser, this);
  17              }
  18          }, this);
  19      },
  20      displayQuestionChooser: function(e) {
  21          var dialogue = Y.one(SELECTORS.CREATENEWQUESTION + ' ' + SELECTORS.CHOOSERDIALOGUE),
  22              header = Y.one(SELECTORS.CREATENEWQUESTION + ' ' + SELECTORS.CHOOSERHEADER);
  23  
  24          if (this.container === null) {
  25              // Setup the dialogue, and then prepare the chooser if it's not already been set up.
  26              this.setup_chooser_dialogue(dialogue, header, {});
  27              this.prepare_chooser();
  28          }
  29  
  30          // Update all of the hidden fields within the questionbank form.
  31          var originForm = e.target.ancestor('form', true),
  32              targetForm = this.container.one('form'),
  33              hiddenElements = originForm.all('input[type="hidden"]');
  34  
  35          targetForm.all('input.customfield').remove();
  36          hiddenElements.each(function(field) {
  37              targetForm.appendChild(field.cloneNode())
  38                  .removeAttribute('id')
  39                  .addClass('customfield');
  40          });
  41  
  42          // Display the chooser dialogue.
  43          this.display_chooser(e);
  44      }
  45  }, {
  46      NAME: 'questionChooser'
  47  });
  48  
  49  M.question = M.question || {};
  50  M.question.init_chooser = function(config) {
  51      return new Chooser(config);
  52  };