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/src/org/eclipse/birt/report/designer/internal/ui/editors/schematic/tools/LibraryElementsToolHandleExtends.java
{
	private DesignElementHandle elementHandle;
	/**
	 * Constructor. Creates a new extends for the given element.
	 * 
	 * @param elementHandle
	 *            the handle of the element
	 */
	public LibraryElementsToolHandleExtends( DesignElementHandle elementHandle )
	{
		super( );
		Assert.isLegal( elementHandle.getRoot( ) instanceof LibraryHandle );
		this.elementHandle = elementHandle;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.designer.internal.ui.editors.schematic.tools.AbstractToolHandleExtends#preHandleMouseUp()
	 */
	public boolean preHandleMouseUp( )
	{
		ModuleHandle moduleHandle = SessionHandleAdapter.getInstance( )
				.getReportDesignHandle( );
		LibraryHandle library = (LibraryHandle) elementHandle.getRoot( );
		try
		{