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 org.vaadin.spring.sidebar; import org.vaadin.spring.sidebar.annotation.ThemeIcon; import com.vaadin.server.Resource; import com.vaadin.server.ThemeResource; /** * Icon provider for {@link org.vaadin.spring.sidebar.annotation.ThemeIcon}. * * @author Petter Holmstrm (petter@vaadin.com) */ public class ThemeIconProvider implements SideBarItemIconProvider<ThemeIcon> { @Override public Resource getIcon(ThemeIcon annotation) { final String resourceId = annotation.value(); if (resourceId.isEmpty()) { return null; } else { return new ThemeResource(resourceId); } } }