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   1  
   2  /**
   3   * Auto-attach for teaser behavior.
   4   *
   5   * Note: depends on resizable textareas.
   6   */
   7  Drupal.behaviors.teaser = function(context) {
   8    $('textarea.teaser:not(.teaser-processed)', context).each(function() {
   9      var teaser = $(this).addClass('teaser-processed');
  10  
  11      // Move teaser textarea before body, and remove its form-item wrapper.
  12      var body = $('#'+ Drupal.settings.teaser[this.id]);
  13      var checkbox = $('#'+ Drupal.settings.teaserCheckbox[this.id]).parent();
  14      var checked = $(checkbox).children('input').attr('checked') ? true : false;
  15      var parent = teaser[0].parentNode;
  16      $(body).before(teaser);
  17      $(parent).remove();
  18  
  19      function trim(text) {
  20        return text.replace(/^\s+/g, '').replace(/\s+$/g, '');
  21      }
  22  
  23      // Join the teaser back to the body.
  24      function join_teaser() {
  25        if (teaser.val()) {
  26          body.val(trim(teaser.val()) +'\r\n\r\n'+ trim(body.val()));
  27        }
  28        // Empty, hide and disable teaser.
  29        teaser[0].value = '';
  30        $(teaser).attr('disabled', 'disabled');
  31        $(teaser).parent().slideUp('fast');
  32        // Change label.
  33        $(this).val(Drupal.t('Split summary at cursor'));
  34        // Hide separate teaser checkbox.
  35        $(checkbox).hide();
  36        // Force a hidden checkbox to be checked (to ensure that the body is
  37        // correctly processed on form submit when teaser/body are in joined
  38        // state), and remember the current checked status.
  39        checked = $(checkbox).children('input').attr('checked') ? true : false;
  40        $(checkbox).children('input').attr('checked', true);
  41      }
  42  
  43      // Split the teaser from the body.
  44      function split_teaser() {
  45        body[0].focus();
  46        var selection = Drupal.getSelection(body[0]);
  47        var split = selection.start;
  48        var text = body.val();
  49  
  50        // Note: using val() fails sometimes. jQuery bug?
  51        teaser[0].value = trim(text.slice(0, split));
  52        body[0].value = trim(text.slice(split));
  53        // Reveal and enable teaser
  54        $(teaser).attr('disabled', '');
  55        $(teaser).parent().slideDown('fast');
  56        // Change label
  57        $(this).val(Drupal.t('Join summary'));
  58        // Show separate teaser checkbox, restore checked value.
  59        $(checkbox).show().children('input').attr('checked', checked);
  60      }
  61  
  62      // Add split/join button.
  63      var button = $('<div class="teaser-button-wrapper"><input type="button" class="teaser-button" /></div>');
  64      var include = $('#'+ this.id.substring(0, this.id.length - 2) +'include');
  65      $(include).parent().parent().before(button);
  66  
  67      // Extract the teaser from the body, if set. Otherwise, stay in joined mode.
  68      var text = body.val().split('<!--break-->', 2);
  69      if (text.length == 2) {
  70        teaser[0].value = trim(text[0]);
  71        body[0].value = trim(text[1]);
  72        $(teaser).attr('disabled', '');
  73        $('input', button).val(Drupal.t('Join summary')).toggle(join_teaser, split_teaser);
  74      }
  75      else {
  76        $('input', button).val(Drupal.t('Split summary at cursor')).toggle(split_teaser, join_teaser);
  77        $(checkbox).hide().children('input').attr('checked', true);
  78      }
  79  
  80      // Make sure that textarea.js has done its magic to ensure proper visibility state.
  81      if (Drupal.behaviors.textarea && teaser.is(('.form-textarea:not(.textarea-processed)'))) {
  82        Drupal.behaviors.textarea(teaser.parentNode);
  83      }
  84      // Set initial visibility
  85      if (teaser[0].disabled) {
  86        teaser.parent().hide();
  87      }
  88  
  89    });
  90  };