Bug 176457 Use container's column bindings in chart editor
chart/org.eclipse.birt.chart.reportitem.ui/src/org/eclipse/birt/chart/reportitem/ui/ReportDataServiceProvider.java
return null;
	}
	public int invoke( int command )
	{
		if ( command == COMMAND_NEW_DATASET )
		{
			return invokeNewDataSet( );
		}
		else if ( command == COMMAND_EDIT_FILTER )
		{
			return invokeEditFilter( );
		}
		else if ( command == COMMAND_EDIT_PARAMETER )
		{
			return invokeEditParameter( );
		}
		else if ( command == COMMAND_EDIT_BINDING )
		{
			return invokeDataBinding( );
		}
		return Window.CANCEL;
	}
	protected int invokeNewDataSet( )
	{
		List dataSources = getReportDesignHandle( ).getVisibleDataSources( );
		if ( dataSources.isEmpty( ) )
		{
			
			new NewDataSourceAction( ).run( );
		}