source: sandbox/3.0/phpgwapi/js/ckeditor/_source/plugins/link/plugin.js @ 2862

/*
Copyright (c) 2003-2010, CKSource - Frederico Knabben. All rights reserved.
For licensing, see LICENSE.html or http://ckeditor.com/license
*/

CKEDITOR.plugins.add( 'link',
{
        init : function( editor )
        {
                // Add the link and unlink buttons.
                editor.addCommand( 'link', new CKEDITOR.dialogCommand( 'link' ) );
                editor.addCommand( 'anchor', new CKEDITOR.dialogCommand( 'anchor' ) );
                editor.addCommand( 'unlink', new CKEDITOR.unlinkCommand() );
                editor.ui.addButton( 'Link',
                        {
                                label : editor.lang.link.toolbar,
                                command : 'link'
                        } );
                editor.ui.addButton( 'Unlink',
                        {
                                label : editor.lang.unlink,
                                command : 'unlink'
                        } );
                editor.ui.addButton( 'Anchor',
                        {
                                label : editor.lang.anchor.toolbar,
                                command : 'anchor'
                        } );
                CKEDITOR.dialog.add( 'link', this.path + 'dialogs/link.js' );
                CKEDITOR.dialog.add( 'anchor', this.path + 'dialogs/anchor.js' );

                // Add the CSS styles for anchor placeholders.
                editor.addCss(
                        'img.cke_anchor' +
                        '{' +
                                'background-image: url(' + CKEDITOR.getUrl( this.path + 'images/anchor.gif' ) + ');' +
                                'background-position: center center;' +
                                'background-repeat: no-repeat;' +
                                'border: 1px solid #a9a9a9;' +
                                'width: 18px;' +
                                'height: 18px;' +
                        '}\n' +
                        'a.cke_anchor' +
                        '{' +
                                'background-image: url(' + CKEDITOR.getUrl( this.path + 'images/anchor.gif' ) + ');' +
                                'background-position: 0 center;' +
                                'background-repeat: no-repeat;' +
                                'border: 1px solid #a9a9a9;' +
                                'padding-left: 18px;' +
                        '}'
                        );

                // Register selection change handler for the unlink button.
                 editor.on( 'selectionChange', function( evt )
                        {
                                /*
                                 * Despite our initial hope, document.queryCommandEnabled() does not work
                                 * for this in Firefox. So we must detect the state by element paths.
                                 */
                                var command = editor.getCommand( 'unlink' ),
                                        element = evt.data.path.lastElement.getAscendant( 'a', true );
                                if ( element && element.getName() == 'a' && element.getAttribute( 'href' ) )
                                        command.setState( CKEDITOR.TRISTATE_OFF );
                                else
                                        command.setState( CKEDITOR.TRISTATE_DISABLED );
                        } );

                // If the "menu" plugin is loaded, register the menu items.
                if ( editor.addMenuItems )
                {
                        editor.addMenuItems(
                                {
                                        anchor :
                                        {
                                                label : editor.lang.anchor.menu,
                                                command : 'anchor',
                                                group : 'anchor'
                                        },

                                        link :
                                        {
                                                label : editor.lang.link.menu,
                                                command : 'link',
                                                group : 'link',
                                                order : 1
                                        },

                                        unlink :
                                        {
                                                label : editor.lang.unlink,
                                                command : 'unlink',
                                                group : 'link',
                                                order : 5
                                        }
                                });
                }

                // If the "contextmenu" plugin is loaded, register the listeners.
                if ( editor.contextMenu )
                {
                        editor.contextMenu.addListener( function( element, selection )
                                {
                                        if ( !element )
                                                return null;

                                        var isAnchor = ( element.is( 'img' ) && element.getAttribute( '_cke_real_element_type' ) == 'anchor' );

                                        if ( !isAnchor )
                                        {
                                                if ( !( element = CKEDITOR.plugins.link.getSelectedLink( editor ) ) )
                                                        return null;

                                                isAnchor = ( element.getAttribute( 'name' ) && !element.getAttribute( 'href' ) );
                                        }

                                        return isAnchor ?
                                                        { anchor : CKEDITOR.TRISTATE_OFF } :
                                                        { link : CKEDITOR.TRISTATE_OFF, unlink : CKEDITOR.TRISTATE_OFF };
                                });
                }
        },

        afterInit : function( editor )
        {
                // Register a filter to displaying placeholders after mode change.

                var dataProcessor = editor.dataProcessor,
                        dataFilter = dataProcessor && dataProcessor.dataFilter;

                if ( dataFilter )
                {
                        dataFilter.addRules(
                                {
                                        elements :
                                        {
                                                a : function( element )
                                                {
                                                        var attributes = element.attributes;
                                                        if ( attributes.name && !attributes.href )
                                                                return editor.createFakeParserElement( element, 'cke_anchor', 'anchor' );
                                                }
                                        }
                                });
                }
        },

        requires : [ 'fakeobjects' ]
} );

CKEDITOR.plugins.link =
{
        /**
         *  Get the surrounding link element of current selection.
         * @param editor
         * @example CKEDITOR.plugins.link.getSelectedLink( editor );
         * @since 3.2.1
         * The following selection will all return the link element.
         *       <pre>
         *  <a href="#">li^nk</a>
         *  <a href="#">[link]</a>
         *  text[<a href="#">link]</a>
         *  <a href="#">li[nk</a>]
         *  [<b><a href="#">li]nk</a></b>]
         *  [<a href="#"><b>li]nk</b></a>
         * </pre>
         */
        getSelectedLink : function( editor )
        {
                var range;
                try { range  = editor.getSelection().getRanges()[ 0 ]; }
                catch( e ) { return null; }

                range.shrink( CKEDITOR.SHRINK_TEXT );
                var root = range.getCommonAncestor();
                return root.getAscendant( 'a', true );
        }
};

CKEDITOR.unlinkCommand = function(){};
CKEDITOR.unlinkCommand.prototype =
{
        /** @ignore */
        exec : function( editor )
        {
                /*
                 * execCommand( 'unlink', ... ) in Firefox leaves behind <span> tags at where
                 * the <a> was, so again we have to remove the link ourselves. (See #430)
                 *
                 * TODO: Use the style system when it's complete. Let's use execCommand()
                 * as a stopgap solution for now.
                 */
                var selection = editor.getSelection(),
                        bookmarks = selection.createBookmarks(),
                        ranges = selection.getRanges(),
                        rangeRoot,
                        element;

                for ( var i = 0 ; i < ranges.length ; i++ )
                {
                        rangeRoot = ranges[i].getCommonAncestor( true );
                        element = rangeRoot.getAscendant( 'a', true );
                        if ( !element )
                                continue;
                        ranges[i].selectNodeContents( element );
                }

                selection.selectRanges( ranges );
                editor.document.$.execCommand( 'unlink', false, null );
                selection.selectBookmarks( bookmarks );
        },

        startDisabled : true
};

CKEDITOR.tools.extend( CKEDITOR.config,
{
        linkShowAdvancedTab : true,
        linkShowTargetTab : true
} );