Bug 183733 Implement the IScriptOjectClassInfo to provide the class infromation to support the JS code assistant.
Engine should implement the IScriptObjectClassInfo interface to return the class information for script object.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/script/internal/GridScriptExecutor.java
eh.onPageBreak( grid, context.getReportContext( ) );
		} catch ( Exception e )
		{
			addException( context, e );
		}
	}
	private static IGridEventHandler getEventHandler( ReportItemDesign design,
			ExecutionContext context )
	{
		GridHandle handle = ( GridHandle ) design.getHandle( );
		if ( handle == null )
			return null;
		return getEventHandler( handle, context );
	}
	private static IGridEventHandler getEventHandler( GridHandle handle,
			ExecutionContext context )
	{
		IGridEventHandler eh = null;
		try
		{
			eh = ( IGridEventHandler ) getInstance( handle, context );
		} catch ( ClassCastException e )
		{
			addClassCastException( context, e, handle.getEventHandlerClass( ),
					IGridEventHandler.class );
		}
		return eh;
	}
}