org.eclipse.ui.handlers.IHandlerActivation#org.eclipse.core.commands.AbstractHandler源码实例Demo

private void setFindBarContextActive(boolean activate)
{
	fActivated = activate;
	IWorkbenchPartSite site = textEditor.getSite();
	IHandlerService handlerService = (IHandlerService) site.getService(IHandlerService.class);
	IBindingService service = (IBindingService) site.getService(IBindingService.class);

	if (activate)
	{

		// These will be the only active commands (note that they may have multiple keybindings
		// defined in plugin.xml)
		for (Map.Entry<String, AbstractHandler> entry : fCommandToHandler.entrySet())
		{
			AbstractHandler handler = entry.getValue();
			if (handler != null)
			{
				fHandlerActivations.add(handlerService.activateHandler(entry.getKey(), handler));
			}
		}

		// Yes, no longer execute anything from the binding service (we'll do our own handling so that the commands
		// we need still get executed).
		service.setKeyFilterEnabled(false);

		service.addBindingManagerListener(fClearCommandToBindingOnChangesListener);
	}
	else
	{
		fCommandToBinding = null;
		service.setKeyFilterEnabled(true);

		service.removeBindingManagerListener(fClearCommandToBindingOnChangesListener);
		handlerService.deactivateHandlers(fHandlerActivations);
		fHandlerActivations.clear();
	}
}
 

/**
 * 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;
		}
	};
}
 

protected AbstractHandler getHandler_OpenDefinition() {
	return getEditorHandler((editor) -> {
		OpenNewEditorMode newEditorMode = OpenNewEditorMode.TRY_REUSING_EXISTING;
		SourceRange selection = EditorUtils.getSelectionSR(editor);
		return createOpenDefinitionOperation(editor, selection, newEditorMode);
	});
}
 

protected void activateHandler(String string, AbstractHandler handler) {
	IHandlerActivation handlerActivation = getHandlerService_2().activateHandler(string, handler);
	handlerActivations.add(handlerActivation);
}
 

protected AbstractHandler getHandler_GoToMatchingBracket() {
	return new GoToMatchingBracketHandler(getPage());
}
 

protected AbstractHandler getHandler_ToggleComment() {
	return new ToggleCommentHandler(getPage());
}
 

protected AbstractHandler getHandler_QuickOutline() {
	return new OpenQuickOutlineHandler(getPage());
}