import org.eclipse.jface.viewers.TreeViewerFocusCellManager; //导入依赖的package包/类
private void initEditOnDoubleClick() {
	TreeViewerFocusCellManager focusCellManager = new TreeViewerFocusCellManager(treeViewer, new FocusCellOwnerDrawHighlighter(treeViewer));
	ColumnViewerEditorActivationStrategy activationSupport = new ColumnViewerEditorActivationStrategy(treeViewer) {
		@Override
		protected boolean isEditorActivationEvent(ColumnViewerEditorActivationEvent event) {
			// Enable editor only with mouse double click
			if (event.eventType == ColumnViewerEditorActivationEvent.MOUSE_DOUBLE_CLICK_SELECTION) {
				EventObject source = event.sourceEvent;
				if (source instanceof MouseEvent && ((MouseEvent) source).button == 3)
					return false;

				return true;
			}

			return false;
		}
	};
	TreeViewerEditor.create(treeViewer, focusCellManager, activationSupport,
	// ColumnViewerEditor.TABBING_HORIZONTAL |
			ColumnViewerEditor.TABBING_MOVE_TO_ROW_NEIGHBOR | ColumnViewerEditor.TABBING_VERTICAL | ColumnViewerEditor.KEYBOARD_ACTIVATION);
}
 

import org.eclipse.jface.viewers.TreeViewerFocusCellManager; //导入依赖的package包/类
protected void setUpCellEditor(ColumnViewer viewer){
	// set up validation of the cell editors
	textCellEditor = new TextCellEditor((Composite) viewer.getControl());
	
	textCellEditor.addListener(new ICellEditorListener() {
		@Override
		public void editorValueChanged(boolean oldValidState, boolean newValidState){
			if (newValidState) {
				textCellEditor.getControl()
					.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_WHITE));
			} else {
				textCellEditor.getControl()
					.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_RED));
			}
		}
		
		@Override
		public void cancelEditor(){
			textCellEditor.getControl()
				.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_WHITE));
		}
		
		@Override
		public void applyEditorValue(){
			textCellEditor.getControl()
				.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_WHITE));
		}
	});
	
	focusCell =
		new TreeViewerFocusCellManager((TreeViewer) viewer, new FocusCellHighlighter(viewer) {
		
		});
		
	ColumnViewerEditorActivationStrategy actSupport =
		new ColumnViewerEditorActivationStrategy(viewer) {
			@Override
			protected boolean isEditorActivationEvent(ColumnViewerEditorActivationEvent event){
				return event.eventType == ColumnViewerEditorActivationEvent.TRAVERSAL
					|| event.eventType == ColumnViewerEditorActivationEvent.MOUSE_DOUBLE_CLICK_SELECTION
					|| (event.eventType == ColumnViewerEditorActivationEvent.KEY_PRESSED
						&& event.keyCode == SWT.CR)
					|| (event.eventType == ColumnViewerEditorActivationEvent.KEY_PRESSED
						&& event.keyCode == SWT.KEYPAD_CR)
					|| event.eventType == ColumnViewerEditorActivationEvent.PROGRAMMATIC;
			}
		};
	
	TreeViewerEditor.create((TreeViewer) viewer, focusCell, actSupport,
		ColumnViewerEditor.TABBING_VERTICAL | ColumnViewerEditor.KEYBOARD_ACTIVATION);
}