source: branches/1.2/workflow/js/fckeditor/editor/_source/internals/fcklisthandler.js @ 1349

/*
 * FCKeditor - The text editor for Internet - http://www.fckeditor.net
 * Copyright (C) 2003-2007 Frederico Caldeira Knabben
 *
 * == BEGIN LICENSE ==
 *
 * Licensed under the terms of any of the following licenses at your
 * choice:
 *
 *  - GNU General Public License Version 2 or later (the "GPL")
 *    http://www.gnu.org/licenses/gpl.html
 *
 *  - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
 *    http://www.gnu.org/licenses/lgpl.html
 *
 *  - Mozilla Public License Version 1.1 or later (the "MPL")
 *    http://www.mozilla.org/MPL/MPL-1.1.html
 *
 * == END LICENSE ==
 *
 * Tool object to manage HTML lists items (UL, OL and LI).
 */

var FCKListHandler =
{
        OutdentListItem : function( listItem )
        {
                var eParent = listItem.parentNode ;

                // It may happen that a LI is not in a UL or OL (Orphan).
                if ( eParent.tagName.toUpperCase().Equals( 'UL','OL' ) )
                {
                        var oDocument = FCKTools.GetElementDocument( listItem ) ;
                        var oDogFrag = new FCKDocumentFragment( oDocument ) ;

                        // All children and successive siblings will be moved to a a DocFrag.
                        var eNextSiblings = oDogFrag.RootNode ;
                        var eHasLiSibling = false ;

                        // If we have nested lists inside it, let's move it to the list of siblings.
                        var eChildList = FCKDomTools.GetFirstChild( listItem, ['UL','OL'] ) ;
                        if ( eChildList )
                        {
                                eHasLiSibling = true ;

                                var eChild ;
                                // The extra () is to avoid a warning with strict error checking. This is ok.
                                while ( (eChild = eChildList.firstChild) )
                                        eNextSiblings.appendChild( eChildList.removeChild( eChild ) ) ;

                                FCKDomTools.RemoveNode( eChildList ) ;
                        }

                        // Move all successive siblings.
                        var eSibling ;
                        var eHasSuccessiveLiSibling = false ;
                        // The extra () is to avoid a warning with strict error checking. This is ok.
                        while ( (eSibling = listItem.nextSibling) )
                        {
                                if ( !eHasLiSibling && eSibling.nodeType == 1 && eSibling.nodeName.toUpperCase() == 'LI' )
                                        eHasSuccessiveLiSibling = eHasLiSibling = true ;

                                eNextSiblings.appendChild( eSibling.parentNode.removeChild( eSibling ) ) ;

                                // If a sibling is a incorrectly nested UL or OL, consider only its children.
                                if ( !eHasSuccessiveLiSibling && eSibling.nodeType == 1 && eSibling.nodeName.toUpperCase().Equals( 'UL','OL' ) )
                                        FCKDomTools.RemoveNode( eSibling, true ) ;
                        }

                        // If we are in a list chain.
                        var sParentParentTag = eParent.parentNode.tagName.toUpperCase() ;
                        var bWellNested = ( sParentParentTag == 'LI' ) ;
                        if ( bWellNested || sParentParentTag.Equals( 'UL','OL' ) )
                        {
                                if ( eHasLiSibling )
                                {
                                        var eChildList = eParent.cloneNode( false ) ;
                                        oDogFrag.AppendTo( eChildList ) ;
                                        listItem.appendChild( eChildList ) ;
                                }
                                else if ( bWellNested )
                                        oDogFrag.InsertAfterNode( eParent.parentNode ) ;
                                else
                                        oDogFrag.InsertAfterNode( eParent ) ;

                                // Move the LI after its parent.parentNode (the upper LI in the hierarchy).
                                if ( bWellNested )
                                        FCKDomTools.InsertAfterNode( eParent.parentNode, eParent.removeChild( listItem ) ) ;
                                else
                                        FCKDomTools.InsertAfterNode( eParent, eParent.removeChild( listItem ) ) ;
                        }
                        else
                        {
                                if ( eHasLiSibling )
                                {
                                        var eNextList = eParent.cloneNode( false ) ;
                                        oDogFrag.AppendTo( eNextList ) ;
                                        FCKDomTools.InsertAfterNode( eParent, eNextList ) ;
                                }

                                var eBlock = oDocument.createElement( FCKConfig.EnterMode == 'p' ? 'p' : 'div' ) ;
                                FCKDomTools.MoveChildren( eParent.removeChild( listItem ), eBlock ) ;
                                FCKDomTools.InsertAfterNode( eParent, eBlock ) ;

                                if ( FCKConfig.EnterMode == 'br' )
                                {
                                        // We need the bogus to make it work properly. In Gecko, we
                                        // need it before the new block, on IE, after it.
                                        if ( FCKBrowserInfo.IsGecko )
                                                eBlock.parentNode.insertBefore( FCKTools.CreateBogusBR( oDocument ), eBlock ) ;
                                        else
                                                FCKDomTools.InsertAfterNode( eBlock, FCKTools.CreateBogusBR( oDocument ) ) ;

                                        FCKDomTools.RemoveNode( eBlock, true ) ;
                                }
                        }

                        if ( this.CheckEmptyList( eParent ) )
                                FCKDomTools.RemoveNode( eParent, true ) ;
                }
        },

        CheckEmptyList : function( listElement )
        {
                return ( FCKDomTools.GetFirstChild( listElement, 'LI' ) == null ) ;
        },

        // Check if the list has contents (excluding nested lists).
        CheckListHasContents : function( listElement )
        {
                var eChildNode = listElement.firstChild ;

                while ( eChildNode )
                {
                        switch ( eChildNode.nodeType )
                        {
                                case 1 :
                                        if ( !eChildNode.nodeName.IEquals( 'UL','LI' ) )
                                                return true ;
                                        break ;

                                case 3 :
                                        if ( eChildNode.nodeValue.Trim().length > 0 )
                                                return true ;
                        }

                        eChildNode = eChildNode.nextSibling ;
                }

                return false ;
        }
} ;