org.eclipse.ui.part.ViewPart#org.eclipse.core.commands.IHandler源码实例Demo

private TestingTypeHierarchyHandler invokeTestingHandler(XtextEditor xtextEditor, String commandID) throws Exception {
	IHandlerService handlerService = xtextEditor.getSite().getService(IHandlerService.class);
	final ICommandService commandService = xtextEditor.getSite()
			.getService(ICommandService.class);
	Command command = commandService.getCommand("org.eclipse.xtext.xbase.ui.hierarchy.OpenTypeHierarchy");
	TestingTypeHierarchyHandler testingHandler = new TestingTypeHierarchyHandler();
	getInjector().injectMembers(testingHandler);
	IHandler originalHandler = command.getHandler();
	command.setHandler(testingHandler);
	final ExecutionEvent event = new ExecutionEvent(command,
			Collections.EMPTY_MAP, null, handlerService.getCurrentState());
	command.executeWithChecks(event);
	command.setHandler(originalHandler);
	return testingHandler;
}
 

@Test
public void testExtension() {
  Extension extension = readCommandExtension();

  assertThat( extension.getAttribute( "name" ) ).isNotEmpty();
  assertThat( extension.getAttribute( "description" ) ).isNotEmpty();
  assertThat( extension.getAttribute( "categoryId" ) ).isEqualTo( "org.eclipse.ui.category.file" );
  IHandler handler = extension.createExecutableExtension( "defaultHandler", IHandler.class );
  assertThat( handler ).isInstanceOf( OpenWithQuickMenuHandler.class );
}
 

@Test
public void testExtension() {
  Extension extension = readCommandExtension();

  assertThat( extension.getAttribute( "name" ) ).isNotEmpty();
  assertThat( extension.getAttribute( "description" ) ).isNotEmpty();
  assertThat( extension.getAttribute( "categoryId" ) ).isEqualTo( "org.eclipse.ui.category.file" );
  IHandler handler = extension.createExecutableExtension( "defaultHandler", IHandler.class );
  assertThat( handler ).isInstanceOf( DeleteEditorFileHandler.class );
}
 

@Test
public void testExtension() {
  Extension extension = readCommandExtension();

  assertThat( extension.getAttribute( "name" ) ).isNotEmpty();
  assertThat( extension.getAttribute( "description" ) ).isNotEmpty();
  assertThat( extension.getAttribute( "categoryId" ) ).isEqualTo( "org.eclipse.ui.category.views" );
  IHandler handler = extension.createExecutableExtension( "defaultHandler", IHandler.class );
  assertThat( handler ).isInstanceOf( CloseViewHandler.class );
}
 

@Test
public void testExtension() {
  Extension extension = readCommandExtension();

  assertThat( extension.getAttribute( "name" ) ).isNotEmpty();
  assertThat( extension.getAttribute( "description" ) ).isNotEmpty();
  assertThat( extension.getAttribute( "categoryId" ) ).isEqualTo( "org.eclipse.debug.ui.category.run" );
  IHandler handler = extension.createExecutableExtension( "defaultHandler", IHandler.class );
  assertThat( handler ).isInstanceOf( OpenLaunchDialogHander.class );
}
 

private void installQuickAccessAction() {
	fHandlerService= (IHandlerService)fSite.getService(IHandlerService.class);
	if (fHandlerService != null) {
		IHandler handler= new JDTQuickMenuCreator(fEditor) {
			@Override
			protected void fillMenu(IMenuManager menu) {
				fillQuickMenu(menu);
			}
		}.createHandler();
		fQuickAccessHandlerActivation= fHandlerService.activateHandler(QUICK_MENU_ID, handler);
	}
}
 

private void installQuickAccessAction() {
	fHandlerService= (IHandlerService)fSite.getService(IHandlerService.class);
	if (fHandlerService != null) {
		IHandler handler= new JDTQuickMenuCreator(fEditor) {
			@Override
			protected void fillMenu(IMenuManager menu) {
				fillQuickMenu(menu);
			}
		}.createHandler();
		fQuickAccessHandlerActivation= fHandlerService.activateHandler(QUICK_MENU_ID, handler);
	}
}
 

/**
 * Returns a handler that can create and open the quick menu.
 * 
 * @return a handler that can create and open the quick menu
 */
public IHandler createHandler() {
	return new AbstractHandler() {
		public Object execute(ExecutionEvent event) throws ExecutionException {
			createMenu();
			return null;
		}
	};
}
 

public void preExecute(String commandId, ExecutionEvent event) {
	IHandler handler = event.getCommand().getHandler();
	// The handler class is not visible
	if (handler != null && handler.getClass().getName().startsWith(ASSIST_HANDLER)) {
		// disable beep if in content assist				
		Beeper.setBeepon(false);	// will be set back in the finally clause 
	}
}
 

/**
 * Creates an ActionHandler for the given IAction and registers it to the Site's HandlerService,
 * i. e. binds the action to the command so that key bindings get activated. You need to set the
 * action's actionDefinitionId to the command id.
 * 
 * @param action
 *            the action to activate. The action's actionDefinitionId must have been set to the
 *            command's id (using <code>setActionDefinitionId()</code>)
 * @param part
 *            the view this action should be registered for
 */
public static void registerActionHandler(final ViewPart part, final IAction action){
	String commandId = action.getActionDefinitionId();
	if (!StringTool.isNothing(commandId)) {
		IHandlerService handlerService = part.getSite().getService(IHandlerService.class);
		IHandler handler = new ActionHandler(action);
		handlerService.activateHandler(commandId, handler);
	}
}