Bug 190207 Integrate Aggregation builder with charts
Charts should be able to use aggregates in their databinding definition. The UI is missing the "Add Aggregation..." button in the chart databinding dialog.
chart/org.eclipse.birt.chart.reportitem.ui/src/org/eclipse/birt/chart/reportitem/ui/ReportDataServiceProvider.java
ChartHelpContextIds.DIALOG_NEW_DATA_SET );
		action.run( );
		return Window.OK;
	}
	protected int invokeEditFilter( )
	{
		ExtendedItemFilterDialog page = new ExtendedItemFilterDialog( itemHandle,
				this );
		return page.open( );
	}
	protected int invokeEditParameter( )
	{
		ReportItemParametersDialog page = new ReportItemParametersDialog( itemHandle );
		return page.open( );
	}
	protected int invokeDataBinding( )
	{
		Shell shell = new Shell( Display.getDefault( ), SWT.DIALOG_TRIM
				| SWT.RESIZE | SWT.APPLICATION_MODAL );
		ChartUIUtil.bindHelp( shell,
				ChartHelpContextIds.DIALOG_DATA_SET_COLUMN_BINDING );
		ColumnBindingDialog page = new ColumnBindingDialog( shell, false ) {
			protected void addBinding( ComputedColumn column )
			{
				try
				{
					DEUtil.addColumn( itemHandle, column, true );
				}
				catch ( SemanticException e )
				{