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
columnList.add( column );
			}
			return columnList;
		}
		return Collections.EMPTY_LIST;
	}
	/**
	 * Gets dataset from ReportItemHandle at first. If null, get dataset from
	 * its container.
	 * 
	 * @return direct dataset
	 */
	protected DataSetHandle getDataSetFromHandle( )
	{
		if ( itemHandle.getDataSet( ) != null )
		{
			return itemHandle.getDataSet( );
		}
		List datasetList = DEUtil.getDataSetList( itemHandle.getContainer( ) );
		if ( datasetList.size( ) > 0 )
		{
			return (DataSetHandle) datasetList.get( 0 );
		}
		return null;
	}
	private StyleHandle[] getAllStyleHandles( )
	{
		List sLst = getReportDesignHandle( ).getAllStyles( );
		StyleHandle[] list = (StyleHandle[]) sLst.toArray( new StyleHandle[sLst.size( )] );
		Arrays.sort( list, new Comparator( ) {