| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.struts2.components; |
| |
| import com.opensymphony.xwork2.inject.Inject; |
| import com.opensymphony.xwork2.util.ValueStack; |
| import com.opensymphony.xwork2.util.reflection.ReflectionProvider; |
| |
| import javax.servlet.http.HttpServletResponse; |
| import javax.servlet.http.HttpServletRequest; |
| import java.io.Writer; |
| import java.util.Iterator; |
| import java.util.Map; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.apache.struts2.dispatcher.PrepareOperations; |
| import org.apache.struts2.views.annotations.StrutsTag; |
| import org.apache.struts2.StrutsException; |
| |
| @StrutsTag(name="debug", tldTagClass="org.apache.struts2.views.jsp.ui.DebugTag", |
| description="Prints debugging information (Only if 'struts.devMode' is enabled)") |
| public class Debug extends UIBean { |
| public static final String TEMPLATE = "debug"; |
| |
| protected ReflectionProvider reflectionProvider; |
| |
| |
| public Debug(ValueStack stack, HttpServletRequest request, HttpServletResponse response) { |
| super(stack, request, response); |
| } |
| |
| @Inject |
| public void setReflectionProvider(ReflectionProvider prov) { |
| this.reflectionProvider = prov; |
| } |
| |
| protected String getDefaultTemplate() { |
| return TEMPLATE; |
| } |
| |
| public boolean start(Writer writer) { |
| boolean result = super.start(writer); |
| |
| if (showDebug()) { |
| ValueStack stack = getStack(); |
| Iterator iter = stack.getRoot().iterator(); |
| List stackValues = new ArrayList(stack.getRoot().size()); |
| while (iter.hasNext()) { |
| Object o = iter.next(); |
| Map values; |
| try { |
| values = reflectionProvider.getBeanMap(o); |
| } catch (Exception e) { |
| throw new StrutsException("Caught an exception while getting the property values of " + o, e); |
| } |
| stackValues.add(new DebugMapEntry(o.getClass().getName(), values)); |
| } |
| |
| addParameter("stackValues", stackValues); |
| } |
| return result; |
| } |
| |
| @Override |
| public boolean end(Writer writer, String body) { |
| if (showDebug()) { |
| return super.end(writer, body); |
| } else { |
| popComponentStack(); |
| return false; |
| } |
| } |
| |
| protected boolean showDebug() { |
| return (devMode || Boolean.TRUE == PrepareOperations.getDevModeOverride()); |
| } |
| |
| private static class DebugMapEntry implements Map.Entry { |
| private Object key; |
| private Object value; |
| |
| DebugMapEntry(Object key, Object value) { |
| this.key = key; |
| this.value = value; |
| } |
| |
| public Object getKey() { |
| return key; |
| } |
| |
| public Object getValue() { |
| return value; |
| } |
| |
| public Object setValue(Object newVal) { |
| Object oldVal = value; |
| value = newVal; |
| return oldVal; |
| } |
| } |
| |
| } |