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
expressionCellEditor.setExpressionProvider( expressionProvider );
						else
						{
							ComputedColumnHandle column = (ComputedColumnHandle) obj;
							BindingExpressionProvider provider = new BindingExpressionProvider( column.getElementHandle( ) );
							provider.addFilter( new ComputedColumnExpressionFilter( bindingTable ) );
							expressionCellEditor.setExpressionProvider( provider );
						}
					}
				}
				updateButtons( );
			}
		} );
		btnAdd = new Button( contentComposite, SWT.PUSH );
		btnAdd.setText( MSG_ADD );
		GridData data = new GridData( );
		data.widthHint = Math.max( 60, btnAdd.computeSize( SWT.DEFAULT,
				SWT.DEFAULT,
				true ).x );
		btnAdd.setLayoutData( data );
		btnAdd.addSelectionListener( new SelectionAdapter( ) {
			public void widgetSelected( SelectionEvent e )
			{
				handleAddEvent( );
				refreshBindingTable( );
				if ( table.getItemCount( ) > 0 )
					selectIndex = ( table.getItemCount( ) - 1 );
				updateButtons( );
			}
		} );