Bug 123404 Pre-define style shouldn't be listed in the style list
Description: Pre-define style shouldn't be listed in the style list Steps to reproduce: 1.Add a label 2.New a pre-define style named "label", set font color to red 3.New a text, select it Expected result: The pre-define style can't apply to the text through any way Actual result: In property editor or properties sheet, the style list lists the pre-define style, and it can be applied to the text Note: In context menu, pre-define style is invisible for the text
UI/org.eclipse.birt.report.designer.ui.lib.explorer/src/org/eclipse/birt/report/designer/ui/lib/explorer/LibraryExplorerTreeViewPage.java
{
				reportPreferenceNode = (IEclipsePreferences) rootNode.node( reportName );
				reportPreferenceNode.addPreferenceChangeListener( this );
			}
		}
		catch ( BackingStoreException e )
		{
			ExceptionHandler.handle( e );
		}
	}
	/**
	 * Creates the context menu
	 */
	private void createContextMenus( )
	{
		MenuManager menuManager = new LibraryExplorerContextMenuProvider( treeViewer );
		Menu menu = menuManager.createContextMenu( treeViewer.getControl( ) );
		treeViewer.getControl( ).setMenu( menu );
		getSite( ).registerContextMenu( "#Pop up", menuManager, 
				getSite( ).getSelectionProvider( ) );			
	}
	private String getTooltip( TreeItem item )
	{
		if ( item != null )
		{
			Object object = item.getData( );
			if ( object instanceof LibraryHandle )
			{
				return ( (LibraryHandle) object ).getFileName( );
			}