eads@16: /**
eads@16:  * Drag and Drop Library For Drupal
eads@16:  *
eads@16:  * This builds on the DnD jQuery plugin written to provide drag and drop media
eads@16:  * handling to Rich Text Editors to consume, display, and attach behavior to
eads@16:  * a "media library" provided via JSON and implemented for Drupal running
eads@16:  * the Wysiwyg plugin.
eads@16:  */
eads@16: 
eads@16: /**
eads@16:  *  Extend jQuery a bit
eads@16:  *  
eads@16:  *  We add a selector to look for "empty" elements (empty elements in TinyMCE
eads@17:  *  often have non-breaking spaces and <br /> tags).  An exception is required
eads@17:  *  to make this work in IE.
eads@16:  */
eads@16: (function($) {
eads@16:   // Custom selectors
eads@16:   $.extend($.expr[":"], {
eads@31:     'dnd_empty' : function(a, i, m) {
eads@17:       return !$(a).filter(function(i) {
eads@17:         return !$(this).is('br');
eads@30:       }).length && !$.trim(a.textContent || a.innerText||$(a).text() || "");
eads@16:     }
eads@16:   });
eads@16: }) (jQuery);
eads@16: 
eads@30: /** 
eads@30:  * Initialize and load drag and drop library and pass off rendering and
eads@30:  * behavior attachment.
eads@30:  */
eads@2: Drupal.behaviors.dndLibrary = function(context) {
eads@16:   $('.dnd-library-wrapper', context).each(function() {
eads@4:     var $this = $(this);
eads@2: 
eads@4:     // This is a bad hack to lop off '-dnd-library' from the id to get the editor name
eads@17:     var $editor = $('#' + this.id.slice(0, -12)); 
eads@17: 
eads@30:     // Set up some initial settings for BeautyTips
eads@30:     var settings = Drupal.settings.dndEnabledLibraries[$editor.get(0).id] = $.extend({
eads@31:       'btSettings' : {
eads@20:         'trigger': 'none',
eads@21:         'width': 375,
eads@20:         'spikeLength': 7,
eads@20:         'spikeGirth': 9,
eads@18:         'corner-radius' : 3,
eads@20:         'strokeWidth': 1,
eads@20:         'fill': '#ffd',
eads@18:         'strokeStyle': '#555'
eads@31:       },
eads@31:       'libraryHoverIntentSettings' : {
eads@31:         'interval': 500,
eads@31:         'timeout' : 0,
eads@31:         'over': function() {
eads@31:           var $this = $(this);
eads@31:           this.btOn();
eads@31:           // Remove the preview once dragging of any image has commenced
eads@31:           $('img', $this).bind('drag', function(e) {
eads@31:             $this.btOff();
eads@31:           });
eads@31:           $('img', $this).bind('click', function(e) {
eads@31:             $this.btOff();
eads@31:           });
eads@31:         }, 
eads@31:         'out': function() { this.btOff(); }
eads@31:       }
eads@30:     }, Drupal.settings.dndEnabledLibraries[$editor.get(0).id]);
eads@24: 
eads@24:     // Bind Drag and Drop plugin invocation to events emanating from Wysiwyg
eads@24:     $editor.bind('wysiwygAttach', Drupal.behaviors.dndLibrary.attach_library);
eads@24:     $editor.bind('wysiwygDetach', Drupal.behaviors.dndLibrary.detach_library);
eads@24: 
eads@30:     // Set up empty objects to keep track of things
eads@30:     Drupal.settings.dndEditorRepresentations = {};
eads@30:     Drupal.settings.dndLibraryPreviews = {};
eads@30: 
eads@31:     // Initialize the library
eads@30:     $.getJSON(Drupal.settings.basePath + settings.url, function(data) {
eads@30:       Drupal.behaviors.dndLibrary.renderLibrary.call($this.get(0), data, $editor);
eads@17:     });
eads@4: 
eads@4:   });
eads@4: }
eads@2: 
eads@30: Drupal.behaviors.dndLibrary.renderLibrary = function(data, editor) {
eads@17:   $this = $(this);
eads@17: 
eads@30:   $this.html(data.library);
eads@17: 
eads@30:   var settings = Drupal.settings.dndEnabledLibraries[editor.get(0).id];
eads@17:   var params = Drupal.wysiwyg.instances[editor.get(0).id];
eads@30: 
eads@17:   editor.trigger('wysiwygDetach', params);
eads@17:   editor.trigger('wysiwygAttach', params);
eads@17: 
eads@17:   for (editor_id in data.editor_representations) {
eads@17:     Drupal.settings.dndEditorRepresentations[editor_id] = data.editor_representations[editor_id];
eads@17:   }
eads@17:   for (preview_id in data.library_previews) {
eads@17:     Drupal.settings.dndLibraryPreviews[preview_id] = data.library_previews[preview_id];
eads@17:   }
eads@19: 
eads@30:   // Add preview behavior to editor items (thanks, BeautyTips!)
eads@30:   $('.editor-item', $this).each(function () {
eads@31:     $(this).bt(Drupal.settings.dndLibraryPreviews[this.id], settings.btSettings);
eads@31:     $(this).hoverIntent(settings.libraryHoverIntentSettings);
eads@30:   });
eads@30: 
eads@30:   // Preload images in editor representations
eads@30:   var cached = $.data($(editor), 'dnd_preload') || {};
eads@31:   for (editor_id in Drupal.settings.dndEditorRepresentations) {
eads@30:     if (!cached[editor_id]) {
eads@30:       $representation = $(Drupal.settings.dndEditorRepresentations[editor_id].body);
eads@30:       if ($representation.is('img') && $representation.get(0).src) { 
eads@30:         $representation.attr('src', $representation.get(0).src);
eads@30:       } else {
eads@30:         $('img', $representation).each(function() {
eads@31:           $(this).attr('src', this.src);
eads@30:         });
eads@30:       }
eads@30:     }
eads@30:   }
eads@31:   $.data($(editor), 'dnd_preload', cached);
eads@30: 
eads@31:   $('.pager a', $this).click(function() {
eads@31:     $.getJSON(this.href, function(data) {
eads@31:       Drupal.behaviors.dndLibrary.renderLibrary.call($this.get(0), data, $(editor));
eads@31:     });
eads@31:     return false;
eads@31:   });
eads@31:   $('.view-filters input[type=submit]', $this).click(function() {
eads@31:     $(this).ajaxSubmit({
eads@31:       'url' : Drupal.settings.basePath + settings.url,
eads@31:       'dataType' : 'json',
eads@31:       'success' : function(data) {
eads@31:         Drupal.behaviors.dndLibrary.renderLibrary.call($this.get(0), data, $(editor));
eads@31:       }
eads@31:     });
eads@31:     return false;
eads@31:   });
eads@17: }
eads@17: 
eads@16: // Dynamically compose a callback based on the editor name
eads@4: Drupal.behaviors.dndLibrary.attach_library = function(e, data) {
eads@17:   var settings = $.extend({idSelector: Drupal.behaviors.dndLibrary.idSelector}, Drupal.settings.dndEnabledLibraries[data.field]);
eads@4:   var editor_fn = 'attach_' + data.editor;
eads@4:   if ($.isFunction(window.Drupal.behaviors.dndLibrary[editor_fn])) {
eads@17:     window.Drupal.behaviors.dndLibrary[editor_fn](data, settings); 
eads@2:   }
eads@2: }
eads@2: 
eads@16: // Do garbage collection on detach
eads@31: Drupal.behaviors.dndLibrary.detach_library = function(e, data) {}
eads@4: 
eads@16: // Basic textareas
eads@16: Drupal.behaviors.dndLibrary.attach_none = function(data, settings) {
eads@16:   settings = $.extend({
eads@16:     targets: $('#'+ data.field),
eads@25:     processTextAreaClick: function(clicked, representation_id, e, data) {
eads@25:       var target = this, $target = $(target);
eads@25: 
eads@25:       // Update element count
eads@25:       Drupal.behaviors.dndLibrary.countElements.call(target, representation_id);
eads@25: 
eads@31:       var snippet = '<p class="dnd-drop-wrapper">' + Drupal.settings.dndEditorRepresentations[representation_id].body + '</p>';
eads@25:       $target.replaceSelection(snippet, true);
eads@16:     }
eads@16:   }, settings);
eads@16:   $(settings.drop_selector).dnd(settings);
eads@16: }
eads@4: 
eads@16: // Attach TinyMCE
eads@2: Drupal.behaviors.dndLibrary.attach_tinymce = function(data, settings) {
eads@4:   var tiny_instance = tinyMCE.getInstanceById(data.field);
eads@4: 
eads@4:   // If the Tiny instance exists, attach directly, otherwise wait until Tiny
eads@4:   // has registered a new instance.
eads@4:   if (tiny_instance) { 
eads@4:     Drupal.behaviors.dndLibrary._attach_tinymce(data, settings, tiny_instance);
eads@4:   } else {
eads@4:     var t = setInterval(function() {
eads@4:       var tiny_instance = tinyMCE.getInstanceById(data.field);
eads@4:       if (tiny_instance) {
eads@4:         Drupal.behaviors.dndLibrary._attach_tinymce(data, settings, tiny_instance);
eads@24:         $('#'+ data.field +'-wrapper').trigger('dnd_attach_library');
eads@4:         clearInterval(t);
eads@2:       }
eads@4:     }, 100);
eads@4:   }
eads@4: }
eads@2: 
eads@17: Drupal.behaviors.dndLibrary.idSelector = function(element) { 
eads@17:   if ($(element).is('img')) {
eads@17:     return $.url.setUrl(element.src).param('dnd_id');
eads@17:   }
eads@17:   return false;
eads@17: }
eads@17: 
eads@16: // Really attach TinyMCE
eads@4: Drupal.behaviors.dndLibrary._attach_tinymce = function(data, settings, tiny_instance) {
eads@16:   var ed = tiny_instance, dom = ed.dom, s = ed.selection;
eads@16: 
eads@4:   settings = $.extend({
eads@4:     targets: $('#'+ data.field +'-wrapper iframe'),
eads@31:     processTargets: function(targets) {
eads@31:       return targets.each(function() {
eads@31:         var target = this
eads@31:         // Decrement counter on delete
eads@31:         $(target).bind('dnd_delete', function(e, data) {
eads@31:           Drupal.behaviors.dndLibrary.countElements(target, $(data.node).attr('dnd_id'), true); 
eads@31:         });
eads@31:         $('head', $(this).contents()).append('<style type="text/css">img { display: none; } img.dnd-dropped {display: block; }</style>');
eads@31:         return this;
eads@31:       });
eads@31:     },
eads@20:     processIframeDrop: function(drop, id_selector) {
eads@20:       var representation_id = id_selector.call(this, drop);
eads@24:       var representation = Drupal.settings.dndEditorRepresentations[representation_id].body;
eads@20:       var target = this, $target = $(target), $drop = $(drop), block;
eads@15: 
eads@25:       // Update element count
eads@31:       Drupal.behaviors.dndLibrary.countElements(target, representation_id);
eads@24: 
eads@16:       // Search through block level parents
eads@20:       $drop.parents().each(function() {
eads@16:         var $this = $(this);
eads@16:         if ($this.css('display') == 'block') {
eads@16:           block = this;
eads@16:           return false;
eads@16:         }
eads@16:       });
eads@16: 
eads@16:       // Remove dropped item
eads@20:       $drop.remove();
eads@16: 
eads@16:       // Create an element to insert
eads@31:       var insert = dom.create('p', {'class' : 'dnd-drop-wrapper', 'id' : 'dnd-inserted'}, representation);
eads@16: 
eads@16:       // The no-parent case
eads@16:       if ($(block).is('body')) {
eads@16:         s.setNode(insert);
eads@16:       }
eads@16:       else {
eads@16:         var old_id = block.id;
eads@16:         block.id = 'target-block';
eads@16:         $block = $('#target-block', $target.contents());
eads@16: 
eads@16:         // @TODO is finding the parent broken in safari??
eads@31:         $block.after('<p class="dnd-drop-wrapper" id="dnd-inserted">' + representation + '</p>');
eads@16: 
eads@16:         // The active target block should be empty
eads@31:         if ($('#target-block:dnd_empty', $target.contents()).length > 0) {
eads@17:           $('#target-block', $target.contents()).remove();
eads@16:         } else if (old_id) {
eads@16:           block.id = old_id;
eads@16:         } else {
eads@16:           $block.removeAttr('id');
eads@16:         }
eads@31:       } 
eads@16: 
eads@16:       var $inserted = $('#dnd-inserted', $target.contents());
eads@16:       var inserted = $inserted.get(0);
eads@16: 
eads@16:       // Look behind in the DOM
eads@16:       var previous = $inserted.prev().get(0);
eads@16: 
eads@16:       // If the previous element is also an editor representation, we need to
eads@16:       // put a dummy paragraph between the elements to prevent editor errors.
eads@31:       if (previous ) {
eads@31:         $inserted.before('<p></p>');
eads@16:       }
eads@16: 
eads@16:       // Look ahead in the DOM
eads@16:       var next = $inserted.next().get(0);
eads@16: 
eads@16:       // If the next item exists and isn't an editor representation, drop the
eads@16:       // caret at the beginning of the element, otherwise make a new paragraph
eads@16:       // to advance the caret to.
eads@31:       if (next && !$(next).hasClass('dnd-drop-wrapper')) {
eads@16:         $(next).prepend('<span id="__caret">_</span>');
eads@16:       }
eads@31:       else if (!$(next).hasClass('dnd-drop-wrapper')) {
eads@16:         var after = dom.create('p', {}, '<span id="__caret">_</span>');
eads@16:         dom.insertAfter(after, 'dnd-inserted');
eads@16:       }
eads@31:  
eads@16:       // Force selection to reset the caret
eads@16:       var c = dom.get('__caret');
eads@31:       if (c) {
eads@31:         s.select(c);
eads@31:         ed.execCommand('Delete', false, null);
eads@31:         dom.remove(c);
eads@31:       }
eads@31: 
eads@31:       // Unset id for next drop and add special dnd attribute for counting
eads@31:       // purposes
eads@31:       $inserted
eads@31:         .removeAttr('id')
eads@31:         .attr('dnd_id', representation_id);
eads@31: 
eads@4:     }
eads@4:   }, settings);
eads@4: 
eads@4:   $(settings.drop_selector).dnd(settings);
eads@2: }
eads@25: 
eads@25: 
eads@25: // Keep a counter of times a representation ID has been used
eads@31: Drupal.behaviors.dndLibrary.countElements = function(target, representation_id, decrement) {
eads@31:   var counter = $(target).data('dnd_representation_counter');      
eads@25:   if (!counter) {
eads@25:     counter = {}
eads@25:     counter[representation_id] = 1;
eads@25:   } else if (counter && !counter[representation_id]) {
eads@25:     counter[representation_id] = 1;
eads@25:   } else {
eads@31:     counter[representation_id] = counter[representation_id] + ((decrement) ? -1 : 1);
eads@25:   }
eads@31:   $(target).data('dnd_representation_counter', counter);
eads@31:   return counter[representation_id];
eads@25: }