001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.wicket.behavior; 018 019import org.apache.wicket.Component; 020import org.apache.wicket.MarkupContainer; 021import org.apache.wicket.markup.ComponentTag; 022import org.apache.wicket.settings.DebugSettings; 023import org.apache.wicket.util.lang.Classes; 024 025/** 026 * <p>A behavior that applies to {@link MarkupContainer}s with associated markup. 027 * It adds an attribute named <em>namespace:className</em> to 028 * the markup element of {@link ComponentTag} with value the fully 029 * qualified class name of the markup container.</p> 030 * 031 * <p>It is used internally by Wicket when {@link org.apache.wicket.settings.DebugSettings.ClassOutputStrategy#TAG_ATTRIBUTE} is active.</p> 032 * 033 * @see DebugSettings#setOutputMarkupContainerClassNameStrategy(DebugSettings.ClassOutputStrategy) 034 */ 035public class OutputMarkupContainerClassNameBehavior extends Behavior { 036 037 public static final OutputMarkupContainerClassNameBehavior INSTANCE = new OutputMarkupContainerClassNameBehavior(); 038 039 private OutputMarkupContainerClassNameBehavior() 040 {} 041 042 @Override 043 public void onComponentTag(Component component, ComponentTag tag) { 044 super.onComponentTag(component, tag); 045 046 if (component instanceof MarkupContainer) 047 { 048 String namespace = tag.getNamespace(); 049 if (namespace == null) 050 { 051 namespace = "wicket"; 052 } 053 tag.put(namespace + ":className", Classes.name(component.getClass())); 054 } 055 } 056 057 @Override 058 public boolean isTemporary(Component component) { 059 return true; 060 } 061}