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
return null;
		}
		
		Object[] returnObj = findDataType( expression, itemHandle );
		if ( ( (Boolean) returnObj[0] ).booleanValue( ) )
		{
			return (DataType) returnObj[1];
		}
		
		ReportItemHandle parentHandle = DEUtil.getBindingHolder( itemHandle );
		if ( parentHandle != null )
		{
			returnObj = findDataType( expression, parentHandle );
			if ( ( (Boolean) returnObj[0] ).booleanValue( ) )
			{
				return (DataType) returnObj[1];
			}
		}
		
		try
		{
			NumberFormat.getInstance( ).parse( expression );
			return DataType.NUMERIC_LITERAL;
		}
		catch ( ParseException e )
		{
		}
		
		try
		{