source: branches/2.2/filemanager/tp/ckeditor/_source/plugins/elementspath/plugin.js @ 3019

/*
Copyright (c) 2003-2009, CKSource - Frederico Knabben. All rights reserved.
For licensing, see LICENSE.html or http://ckeditor.com/license
*/

/**
 * @fileOverview The "elementspath" plugin. It shows all elements in the DOM
 *              parent tree relative to the current selection in the editing area.
 */

(function()
{
        var commands =
        {
                toolbarFocus :
                {
                        exec : function( editor )
                        {
                                var idBase = editor._.elementsPath.idBase;
                                var element = CKEDITOR.document.getById( idBase + '0' );

                                if ( element )
                                        element.focus();
                        }
                }
        };

        var emptyHtml = '<span class="cke_empty">&nbsp;</span>';

        CKEDITOR.plugins.add( 'elementspath',
        {
                requires : [ 'selection' ],

                init : function( editor )
                {
                        var spaceId = 'cke_path_' + editor.name;
                        var spaceElement;
                        var getSpaceElement = function()
                        {
                                if ( !spaceElement )
                                        spaceElement = CKEDITOR.document.getById( spaceId );
                                return spaceElement;
                        };

                        var idBase = 'cke_elementspath_' + CKEDITOR.tools.getNextNumber() + '_';

                        editor._.elementsPath = { idBase : idBase };

                        editor.on( 'themeSpace', function( event )
                                {
                                        if ( event.data.space == 'bottom' )
                                                event.data.html += '<div id="' + spaceId + '" class="cke_path">' + emptyHtml + '</div>';
                                });

                        editor.on( 'selectionChange', function( ev )
                                {
                                        var env = CKEDITOR.env;

                                        var selection = ev.data.selection;

                                        var element = selection.getStartElement(),
                                                html = [],
                                                elementsList = this._.elementsPath.list = [];

                                        while ( element )
                                        {
                                                var index = elementsList.push( element ) - 1;
                                                var name;
                                                if ( element.getAttribute( '_cke_real_element_type' ) )
                                                        name = element.getAttribute( '_cke_real_element_type' );
                                                else
                                                        name = element.getName();

                                                // Use this variable to add conditional stuff to the
                                                // HTML (because we are doing it in reverse order... unshift).
                                                var extra = '';

                                                // Some browsers don't cancel key events in the keydown but in the
                                                // keypress.
                                                // TODO: Check if really needed for Gecko+Mac.
                                                if ( env.opera || ( env.gecko && env.mac ) )
                                                        extra += ' onkeypress="return false;"';

                                                // With Firefox, we need to force the button to redraw, otherwise it
                                                // will remain in the focus state.
                                                if ( env.gecko )
                                                        extra += ' onblur="this.style.cssText = this.style.cssText;"';

                                                html.unshift(
                                                        '<a' +
                                                                ' id="', idBase, index, '"' +
                                                                ' href="javascript:void(\'', name, '\')"' +
                                                                ' tabindex="-1"' +
                                                                ' title="', editor.lang.elementsPath.eleTitle.replace( /%1/, name ), '"' +
                                                                ( ( CKEDITOR.env.gecko && CKEDITOR.env.version < 10900 ) ?
                                                                ' onfocus="event.preventBubble();"' : '' ) +
                                                                ' hidefocus="true" ' +
                                                                ' onkeydown="return CKEDITOR._.elementsPath.keydown(\'', this.name, '\',', index, ', event);"' +
                                                                extra ,
                                                                ' onclick="return CKEDITOR._.elementsPath.click(\'', this.name, '\',', index, ');">',
                                                                        name,
                                                        '</a>' );

                                                if ( name == 'body' )
                                                        break;

                                                element = element.getParent();
                                        }

                                        getSpaceElement().setHtml( html.join('') + emptyHtml );
                                });

                        editor.on( 'contentDomUnload', function()
                                {
                                        getSpaceElement().setHtml( emptyHtml );
                                });

                        editor.addCommand( 'elementsPathFocus', commands.toolbarFocus );
                }
        });
})();

/**
 * Handles the click on an element in the element path.
 * @private
 */
CKEDITOR._.elementsPath =
{
        click : function( instanceName, elementIndex )
        {
                var editor = CKEDITOR.instances[ instanceName ];
                editor.focus();

                var element = editor._.elementsPath.list[ elementIndex ];
                editor.getSelection().selectElement( element );

                return false;
        },

        keydown : function( instanceName, elementIndex, ev )
        {
                var instance = CKEDITOR.ui.button._.instances[ elementIndex ];
                var editor = CKEDITOR.instances[ instanceName ];
                var idBase = editor._.elementsPath.idBase;

                var element;

                ev = new CKEDITOR.dom.event( ev );

                switch ( ev.getKeystroke() )
                {
                        case 37 :                                       // LEFT-ARROW
                        case 9 :                                        // TAB
                                element = CKEDITOR.document.getById( idBase + ( elementIndex + 1 ) );
                                if ( !element )
                                        element = CKEDITOR.document.getById( idBase + '0' );
                                element.focus();
                                return false;

                        case 39 :                                       // RIGHT-ARROW
                        case CKEDITOR.SHIFT + 9 :       // SHIFT + TAB
                                element = CKEDITOR.document.getById( idBase + ( elementIndex - 1 ) );
                                if ( !element )
                                        element = CKEDITOR.document.getById( idBase + ( editor._.elementsPath.list.length - 1 ) );
                                element.focus();
                                return false;

                        case 27 :                                       // ESC
                                editor.focus();
                                return false;

                        case 13 :                                       // ENTER        // Opera
                        case 32 :                                       // SPACE
                                this.click( instanceName, elementIndex );
                                return false;

                        //default :
                        //      alert( ev.getKeystroke() );
                }
                return true;
        }
};