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/src/org/eclipse/birt/chart/reportitem/ChartReportItemUtil.java
public static ChartReportItemImpl getChartReportItemFromHandle(
			ExtendedItemHandle eih )
	{
		ChartReportItemImpl item = null;
		if ( !"Chart".endsWith( eih.getExtensionName( ) ) ) 
		{
			return null;
		}
		try
		{
			item = (ChartReportItemImpl) eih.getReportItem( );
		}
		catch ( ExtendedElementException e )
		{
			logger.log( e );
		}
		if ( item == null )
		{
			try
			{
				eih.loadExtendedElement( );
				item = (ChartReportItemImpl) eih.getReportItem( );
			}
			catch ( ExtendedElementException eeex )
			{
				logger.log( eeex );
			}
			if ( item == null )
			{
				logger.log( ILogger.ERROR,