Club Drupal

/*

Copyright (c) 2003-2013, CKSource - Frederico Knabben. All rights reserved.

For licensing, see LICENSE.html or http://ckeditor.com/license

*/

/**

 * @file Plugin for inserting images from Drupal media module

 *

 * @TODO Remove all the legecy media wrapper once it's sure nobody uses that

 * anymore.

 */

( function() {

  var mediaPluginDefinition = {

    icons: 'media',

    requires: ['button'],

    // All the default distributions of the editor have the widget plugin

    // disabled by default.

    hasWidgetSupport: false,

    mediaLegacyWrappers: false,

    hidpi: true,

    onLoad: function() {

      // Check if this instance has widget support.

      mediaPluginDefinition.hasWidgetSupport = typeof(CKEDITOR.plugins.registered.widget) != 'undefined';

      // Add dependency to widget plugin if possible.

      if (parseFloat(CKEDITOR.version) >= 4.3 && mediaPluginDefinition.hasWidgetSupport) {

        mediaPluginDefinition.requires.push('widget');

      }

    },

    // Wrap Drupal plugin in a proxy plugin.

    init: function(editor){

      editor.addCommand( 'media',

      {

        exec: function (editor) {

          var data = {

            format: 'html',

            node: null,

            content: ''

          };

          var selection = editor.getSelection();

          if (selection) {

            data.node = selection.getSelectedElement();

            if (data.node) {

              data.node = data.node.$;

            }

            if (selection.getType() == CKEDITOR.SELECTION_TEXT) {

              if (CKEDITOR.env.ie && CKEDITOR.env.version < 10) {

                data.content = selection.getNative().createRange().text;

              }

              else {

                data.content = selection.getNative().toString();

              }

            }

            else if (data.node) {

              // content is supposed to contain the "outerHTML".

              data.content = data.node.parentNode.innerHTML;

            }

          }

          // If we are inside another media element, we need to move the cursor to the end of the element

          var selected_element = selection.getStartElement();

          var parent = selected_element.getParent();

          //if we are inside "a" tag and inside "span" (with class media-element)

          if (selected_element.is('a') && parent.is('span') && parent.hasClass('media-element')) {

            selection.selectElement(parent);

            selected_ranges = selection.getRanges();

            selected_ranges[0].collapse(false);

            selection.selectRanges(selected_ranges);

          }

          //if we are outside "a" tag but inside "span" (with class media-element)

          else if (selected_element.is('span') && selected_element.hasClass('media-element')) {

              selection.selectElement(selected_element);

              selected_ranges = selection.getRanges();

              selected_ranges[0].collapse(false);

              selection.selectRanges(selected_ranges);

          }

          Drupal.settings.ckeditor.plugins['media'].invoke(data, Drupal.settings.ckeditor.plugins['media'], editor.name);

        }

      });

      // Add a Ckeditor context menu item for editing already-inserted media.

      if (editor.contextMenu) {

        editor.addCommand('mediaConfigure', {

          exec: function (editor) {

            editor.execCommand('media');

          },

        });

        editor.addMenuGroup('mediaGroup');

        editor.addMenuItem('mediaConfigureItem', {

          label: Drupal.t('Media settings'),

          icon: this.path + 'images/icon.gif',

          command: 'mediaConfigure',

          group: 'mediaGroup'

        });

        editor.contextMenu.addListener(function(element) {

          if (element.getAttribute('data-media-element') ||

              element.find('[data-media-element]').count()) {

            return { mediaConfigureItem: CKEDITOR.TRISTATE_OFF };

          };

        });

      }

      // Add the toolbar button.

      editor.ui.addButton( 'Media',

      {

        label: 'Add media',

        command: 'media'

      });

      var ckeditorversion = parseFloat(CKEDITOR.version);

      // Because the media comment wrapper don't work well for CKEditor we

      // replace them by using a custom mediawrapper element.

      // Instead having

      // <!--MEDIA-WRAPPER-START-1--><img /><!--MEDIA-WRAPPER-END-1-->

      // We wrap the placeholder with

      // <mediawrapper data="1"><img /></mediawrapper>

      // That way we can deal better with selections - see selectionChange.

      CKEDITOR.dtd['mediawrapper'] = CKEDITOR.dtd;

      CKEDITOR.dtd.$blockLimit['mediawrapper'] = 1;

      CKEDITOR.dtd.$inline['mediawrapper'] = 1;

      CKEDITOR.dtd.$nonEditable['mediawrapper'] = 1;

      if (ckeditorversion >= 4.1) {

        // Register allowed tag for advanced filtering.

        editor.filter.allow( 'mediawrapper[!data]', 'mediawrapper', true);

        // Don't remove the data-file_info attribute added by media!

        editor.filter.allow( '*[!data-file_info]', 'mediawrapper', true);

        // Ensure image tags accept all kinds of attributes.

        editor.filter.allow( 'img[*]{*}(*)', 'mediawrapper', true);

        // Objects should be selected as a whole in the editor.

        CKEDITOR.dtd.$object['mediawrapper'] = 1;

      }

      function prepareDataForWysiwygMode(data) {

        if (typeof Drupal.media !== 'undefined') {

          data = Drupal.media.filter.replaceTokenWithPlaceholder(data);

        }

        // Legacy media wrapper.

        mediaPluginDefinition.mediaLegacyWrappers = (data.indexOf("<!--MEDIA-WRAPPER-START-") !== -1);

        if (mediaPluginDefinition.mediaLegacyWrappers) {

          data = data.replace(/<!--MEDIA-WRAPPER-START-(\d+)-->(.*?)<!--MEDIA-WRAPPER-END-\d+-->/gi, '<mediawrapper data="$1">$2</mediawrapper>');

        }

        return data;

      }

      function prepareDataForSourceMode(data) {

        var replacement = '$2';

        // Legacy wrapper

        if (mediaPluginDefinition.mediaLegacyWrappers) {

          replacement = '<!--MEDIA-WRAPPER-START-$1-->$2<!--MEDIA-WRAPPER-END-$1-->';

        }

        data = data.replace(/<mediawrapper data="(.*?)">(.*?)<\/mediawrapper>/gi, replacement);

        if (typeof Drupal.media !== 'undefined') {

          data = Drupal.media.filter.replacePlaceholderWithToken(data);

        }

        return data;

      }

      // Ensure the tokens are replaced by placeholders while editing.

      // Check for widget support.

      if (mediaPluginDefinition.hasWidgetSupport) {

        editor.widgets.add( 'mediabox',

        {

          button: 'Create a mediabox',

          editables: {},

          allowedContent: '*',

          upcast: function( element ) {

            // Ensure media tokens are converted to media placeholders.

            html = Drupal.media.filter.replaceTokenWithPlaceholder(element.getHtml());

            // Only replace html if it's different

            if (html != element.getHtml()) {

              element.setHtml(html);

              // CKEditor's setHtml() method automatically fixes the HTML that

              // it receives, which means that if it gets an <li> without a

              // <ul> or <ol> parent, it adds a <ul>. These extra <ul> tags just

              // keep piling up every time this function runs. So check here to

              // see if we may need to fix this.

              if (element.children && element.children[0]) {

                // We identify this by looking for a <ul> inside a <ul> or <ol>.

                if (('ul' === element.name && 'ul' === element.children[0].name) ||

                    ('ol' === element.name && 'ul' === element.children[0].name)) {

                  // If this did happen, fix it by promoting the grandchildren

                  // (ie, actual list items) to children.

                  element.children = element.children[0].children;

                }

              }

            }

            return element.name == 'mediawrapper' || 'data-media-element' in element.attributes;

          },

          downcast: function( widgetElement ) {

            var token = Drupal.media.filter.replacePlaceholderWithToken(widgetElement.getOuterHtml());

            if (token) {

              return new CKEDITOR.htmlParser.text(token);

            }

            return false;

          },

          init: function() {

            // Add double-click functionality to the widget.

            this.on('doubleclick', function(evt) {

              editor.execCommand('media');

            }, null, null, 5 );

          }

        });

      }

      else if (ckeditorversion >= 4) {

        // CKEditor >=4.0

        editor.on('setData', function( event ) {

          event.data.dataValue = prepareDataForWysiwygMode(event.data.dataValue);

        });

      }

      else {

        // CKEditor >=3.6 behaviour.

        editor.on( 'beforeSetMode', function( event, data ) {

          event.removeListener();

          var wysiwyg = editor._.modes[ 'wysiwyg' ];

          var source = editor._.modes[ 'source' ];

          wysiwyg.loadData = CKEDITOR.tools.override( wysiwyg.loadData, function( org )

          {

            return function( data ) {

              return ( org.call( this, prepareDataForWysiwygMode(data)) );

            };

          } );

          source.loadData = CKEDITOR.tools.override( source.loadData, function( org )

          {

            return function( data ) {

              return ( org.call( this, prepareDataForSourceMode(data) ) );

            };

          } );

        });

      }

      // Provide alternative to the widget functionality introduced in 4.3.

      if (!mediaPluginDefinition.hasWidgetSupport) {

        // Ensure tokens instead the html element is saved.

        editor.on('getData', function( event ) {

          event.data.dataValue = prepareDataForSourceMode(event.data.dataValue);

        });

        // Ensure our enclosing wrappers are always included in the selection.

        editor.on('selectionChange', function( event ) {

          var ranges = editor.getSelection().getRanges().createIterator();

          var newRanges = [];

          var currRange;

          while(currRange = ranges.getNextRange()) {

            var commonAncestor = currRange.getCommonAncestor(false);

            if (commonAncestor && typeof(commonAncestor.getName) != 'undefined' && commonAncestor.getName() == 'mediawrapper') {

              var range = new CKEDITOR.dom.range( editor.document );

              if (currRange.collapsed === true) {

                // Don't allow selection within the wrapper element.

                if (currRange.startOffset == 0) {

                  // While v3 plays nice with setting start and end to avoid

                  // editing within the media wrapper element, v4 ignores that.

                  // Thus we try to move the cursor further away.

                  if (parseInt(CKEDITOR.version) > 3) {

                    range.setStart(commonAncestor.getPrevious());

                    range.setEnd(commonAncestor.getPrevious());

                  }

                  else {

                    range.setStartBefore(commonAncestor);

                  }

                }

                else {

                  // While v3 plays nice with setting start and end to avoid

                  // editing within the media wrapper element, v4 ignores that.

                  // Thus we try to move the cursor further away.

                  if (parseInt(CKEDITOR.version) > 3) {

                    range.setStart(commonAncestor.getNext(), 1);

                    range.setEnd(commonAncestor.getNext(), 1);

                  }

                  else {

                    range.setStartAfter(commonAncestor);

                  }

                }

              }

              else {

                // Always select the whole wrapper element.

                range.setStartBefore(commonAncestor);

                range.setEndAfter(commonAncestor);

              }

              newRanges.push(range);

            }

          }

          if (newRanges.length) {

            editor.getSelection().selectRanges(newRanges);

          }

        });

      }

    }

  };

  CKEDITOR.plugins.add( 'media', mediaPluginDefinition);

} )();