webmaster@1: // $Id: teaser.js,v 1.12 2008/01/09 12:10:04 goba Exp $
webmaster@1: 
webmaster@1: /**
webmaster@1:  * Auto-attach for teaser behavior.
webmaster@1:  *
webmaster@1:  * Note: depends on resizable textareas.
webmaster@1:  */
webmaster@1: Drupal.behaviors.teaser = function(context) {
webmaster@1:   // This breaks in Konqueror. Prevent it from running.
webmaster@1:   if (/KDE/.test(navigator.vendor)) {
webmaster@1:     return;
webmaster@1:   }
webmaster@1: 
webmaster@1:   $('textarea.teaser:not(.teaser-processed)', context).each(function() {
webmaster@1:     var teaser = $(this).addClass('teaser-processed');
webmaster@1: 
webmaster@1:     // Move teaser textarea before body, and remove its form-item wrapper.
webmaster@1:     var body = $('#'+ Drupal.settings.teaser[this.id]);
webmaster@1:     var checkbox = $('#'+ Drupal.settings.teaserCheckbox[this.id]).parent();
webmaster@1:     var checked = $(checkbox).children('input').attr('checked') ? true : false;
webmaster@1:     var parent = teaser[0].parentNode;
webmaster@1:     $(body).before(teaser);
webmaster@1:     $(parent).remove();
webmaster@1: 
webmaster@1:     function trim(text) {
webmaster@1:       return text.replace(/^\s+/g, '').replace(/\s+$/g, '');
webmaster@1:     }
webmaster@1: 
webmaster@1:     // Join the teaser back to the body.
webmaster@1:     function join_teaser() {
webmaster@1:       if (teaser.val()) {
webmaster@1:         body.val(trim(teaser.val()) +'\r\n\r\n'+ trim(body.val()));
webmaster@1:       }
webmaster@1:       // Empty, hide and disable teaser.
webmaster@1:       teaser[0].value = '';
webmaster@1:       $(teaser).attr('disabled', 'disabled');
webmaster@1:       $(teaser).parent().slideUp('fast');
webmaster@1:       // Change label.
webmaster@1:       $(this).val(Drupal.t('Split summary at cursor'));
webmaster@1:       // Hide separate teaser checkbox.
webmaster@1:       $(checkbox).hide();
webmaster@1:       // Force a hidden checkbox to be checked (to ensure that the body is
webmaster@1:       // correctly processed on form submit when teaser/body are in joined
webmaster@1:       // state), and remember the current checked status.
webmaster@1:       checked = $(checkbox).children('input').attr('checked') ? true : false;
webmaster@1:       $(checkbox).children('input').attr('checked', true);
webmaster@1:     }
webmaster@1: 
webmaster@1:     // Split the teaser from the body.
webmaster@1:     function split_teaser() {
webmaster@1:       body[0].focus();
webmaster@1:       var selection = Drupal.getSelection(body[0]);
webmaster@1:       var split = selection.start;
webmaster@1:       var text = body.val();
webmaster@1: 
webmaster@1:       // Note: using val() fails sometimes. jQuery bug?
webmaster@1:       teaser[0].value = trim(text.slice(0, split));
webmaster@1:       body[0].value = trim(text.slice(split));
webmaster@1:       // Reveal and enable teaser
webmaster@1:       $(teaser).attr('disabled', '');
webmaster@1:       $(teaser).parent().slideDown('fast');
webmaster@1:       // Change label
webmaster@1:       $(this).val(Drupal.t('Join summary'));
webmaster@1:       // Show separate teaser checkbox, restore checked value.
webmaster@1:       $(checkbox).show().children('input').attr('checked', checked);
webmaster@1:     }
webmaster@1: 
webmaster@1:     // Add split/join button.
webmaster@1:     var button = $('<div class="teaser-button-wrapper"><input type="button" class="teaser-button" /></div>');
webmaster@1:     var include = $('#'+ this.id.substring(0, this.id.length - 2) +'include');
webmaster@1:     $(include).parent().parent().before(button);
webmaster@1: 
webmaster@1:     // Extract the teaser from the body, if set. Otherwise, stay in joined mode.
webmaster@1:     var text = body.val().split('<!--break-->', 2);
webmaster@1:     if (text.length == 2) {
webmaster@1:       teaser[0].value = trim(text[0]);
webmaster@1:       body[0].value = trim(text[1]);
webmaster@1:       $(teaser).attr('disabled', '');
webmaster@1:       $('input', button).val(Drupal.t('Join summary')).toggle(join_teaser, split_teaser);
webmaster@1:     }
webmaster@1:     else {
webmaster@1:       $('input', button).val(Drupal.t('Split summary at cursor')).toggle(split_teaser, join_teaser);
webmaster@1:       $(checkbox).hide().children('input').attr('checked', true);
webmaster@1:     }
webmaster@1: 
webmaster@1:     // Make sure that textarea.js has done its magic to ensure proper visibility state.
webmaster@1:     if (Drupal.behaviors.textarea && teaser.is(('.form-textarea:not(.textarea-processed)'))) {
webmaster@1:       Drupal.behaviors.textarea(teaser.parentNode);
webmaster@1:     }
webmaster@1:     // Set initial visibility
webmaster@1:     if ($(teaser).is('[@disabled]')) {
webmaster@1:       $(teaser).parent().hide();
webmaster@1:     }
webmaster@1: 
webmaster@1:   });
webmaster@1: };