Java tutorial
/* * Copyright 2015 The original authors * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.gmail.volodymyrdotsenko.cms.fe.vaadin.operations; import com.gmail.volodymyrdotsenko.cms.fe.vaadin.Sections; import com.gmail.volodymyrdotsenko.cms.fe.vaadin.backend.MyBackend; import com.vaadin.server.FontAwesome; import com.vaadin.spring.annotation.SpringComponent; import com.vaadin.ui.Notification; import org.springframework.beans.factory.annotation.Autowired; import org.vaadin.spring.sidebar.annotation.FontAwesomeIcon; import org.vaadin.spring.sidebar.annotation.SideBarItem; /** * An operation that invokes a backend method that is available for admin users only. The operation is, however, * always visible in the side bar to demonstrate that the security checks on the backend layer are working. * * @author Petter Holmstrm (petter@vaadin.com) */ @SpringComponent @SideBarItem(sectionId = Sections.OPERATIONS, caption = "Admin operation", order = 1) @FontAwesomeIcon(FontAwesome.WRENCH) public class AdminOperation implements Runnable { private final MyBackend backend; @Autowired public AdminOperation(MyBackend backend) { this.backend = backend; } @Override public void run() { Notification.show(backend.adminOnlyEcho("Hello Admin World")); } }