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
}
		return ""; 
	}
	/**
	 * The <code>Page</code> implementation of this <code>IPage</code>
	 * method disposes of this page's control (if it has one and it has not
	 * already been disposed). Disposes the visitor of the element
	 */
	public void dispose( )
	{
		removeListener( treeViewer.getInput( ) );
		if ( visitor != null )
		{
			visitor.removeListener( SessionHandleAdapter.getInstance( )
					.getReportDesignHandle( ) );
			visitor.dispose( );
			visitor = null;
		}
		if ( reportPreferenceNode != null )
			reportPreferenceNode.removePreferenceChangeListener( this );
		SessionHandleAdapter.getInstance( )
				.getCommandStack( )
				.removeListener( this );
		super.dispose( );
	}
	/**
	 * Refreshes the focus and the focus container of the tree view. And applies
	 * the visitor to the given focus.
	 * 
	 * @param focus