Bug 146159 [Regression]Changing font operation doesn't work other than the first time
Description: The first time changing operation can work well. However, Change it again, it won't work. Steps: 1.Insert lable/text to layout or master page 2.Change the font from serif to cursive, it works well 3.Change the font again Result: The action doesn't work Additional infor: build number:200606080632
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/util/UIUtil.java
else
			{
				level[i] = bidi.getLevelAt( i );
				if ( level[i] % 2 == 1 )
				{
					bidiStart = true;
				}
			}
		}
		return level;
	}
	private static boolean isNeutral( char c )
	{
		boolean match = punctuation.matcher( new StringBuffer( 0 ).append( c ) )
				.matches( );
		return match;
	}
	/**
	 * Sets the given help context id on the given control's shell.
	 * 
	 * @param control
	 *            the control on which to register the context id
	 * @param contextId
	 *            the context id to use when F1 help is invoked
	 */
	public static void bindHelp( Control control, String contextId )
	{
		try
		{
			IWorkbench workbench = PlatformUI.getWorkbench( );