Bug 190957 The cancel button in group level dialog in cube take no effect[1101]
Description: The cancel button in group level dialog in cube take no effect[1101] Build number: 2.2.0.v20070605-0630 Steps to reproduce: 1, New a cube 2, New a level 3, Do some operations on the level 4, Click cancel button Expected result: The cancel button can take effect to cancel all the operations Actual result: The cancel button take no effect and all the operations have done
UI/org.eclipse.birt.report.designer.ui.cubebuilder/src/org/eclipse/birt/report/designer/ui/cubebuilder/page/CubeGroupContent.java
gd.grabExcessVerticalSpace = true;
		gd.verticalAlignment = SWT.TOP;
		removeButton.setLayoutData( gd );
	}
	private void createDataField( )
	{
		Composite dataField = new Composite( this, SWT.NONE );
		dataField.setLayoutData( new GridData( GridData.FILL_BOTH ) );
		dataField.setLayout( new GridLayout( ) );
		Label dataLabel = new Label( dataField, SWT.NONE );
		dataLabel.setText( Messages.getString( "GroupsPage.Label.DataField" ) ); 
		dataFieldsViewer = new TreeViewer( dataField, SWT.SINGLE
				| SWT.H_SCROLL
				| SWT.V_SCROLL
				| SWT.BORDER );
		cubeLabelProvider = new CubeLabelProvider( );
		dataFieldsViewer.setLabelProvider( cubeLabelProvider );
		dataFieldsViewer.setContentProvider( dataContentProvider );
		dataFieldsViewer.setAutoExpandLevel( 3 );
		GridData gd = new GridData( GridData.FILL_BOTH );
		dataFieldsViewer.getTree( ).setLayoutData( gd );
		( (GridData) dataFieldsViewer.getTree( ).getLayoutData( ) ).heightHint = 250;
		( (GridData) dataFieldsViewer.getTree( ).getLayoutData( ) ).widthHint = 225;
		dataFieldsViewer.addSelectionChangedListener( new ISelectionChangedListener( ) {
			public void selectionChanged( SelectionChangedEvent event )
			{
				updateButtons( );
			}
		} );
		final DragSource fieldsSource = new DragSource( dataFieldsViewer.getTree( ),