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.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/ColumnBindingDialog.java
return parentComposite;
	}
	protected void handleAddEvent( )
	{
		DataColumnBindingDialog dialog = new DataColumnBindingDialog( true );
		dialog.setInput( inputElement );
		dialog.setExpressionProvider( expressionProvider );
		if ( dialog.open( ) == Dialog.OK )
		{
			if ( bindingTable != null )
			{
				refreshBindingTable( );
				bindingTable.getTable( ).setSelection( bindingTable.getTable( )
						.getItemCount( ) - 1 );
			}
		}
	}
	protected void handleEditEvent( )
	{
		ComputedColumnHandle bindingHandle = null;
		int pos = bindingTable.getTable( ).getSelectionIndex( );
		if ( pos > -1 )
		{
			bindingHandle = (ComputedColumnHandle) ( (ReportItemHandle) DEUtil.getBindingHolder( inputElement ) ).getColumnBindings( )
					.getAt( pos );
		}
		if ( bindingHandle == null )
			return;
		String bindingName = bindingHandle.getName( );
		DataColumnBindingDialog dialog = new DataColumnBindingDialog( false );