Bug 214572 Implement IAggregationCellViewProvider for crosstab/chart integration
This interface implements the model logic for the designer UI, when the users design a crosstab with charts. Note that it is independent from the multi-view feature. /** * Return the name of this view */ String getViewName( ); // this should simply return "chart" /** * Returns if the given aggregation cell matches this view */ boolean matchView( AggregationCellHandle cell ); Returns true if chart is supported in this type of aggregation cell /** * Switches given aggregation cell to this view */ void switchView( AggregationCellHandle cell ); create a chart inside the aggregation cell (and remove the data elements). This method is called when the UI tries to switch the cell contents from data element to chart. /** * Restores given aggregation cell to previous view */ void restoreView( AggregationCellHandle cell );
chart/org.eclipse.birt.chart.reportitem.ui/src/org/eclipse/birt/chart/reportitem/ui/ReportDataServiceProvider.java
{
				itemHandle.setDataBindingReference( null );
			}
			if ( datasetName == null )
			{
				if ( getBoundDataSet( ) != null )
				{
					
					needClean = true;
				}
				itemHandle.setDataSet( null );
			}
			else
			{
				DataSetHandle dataset = getReportDesignHandle( ).findDataSet( datasetName );
				if ( itemHandle.getDataSet( ) != dataset )
				{
					itemHandle.setDataSet( dataset );
					
					needClean = true;
					needAddBinding = true;
				}
			}
			if ( needClean )
			{
				
				clearBindings( );
			}
			if ( needAddBinding )
			{