com.sun.faces.facelets.tag.ui.UIDebug Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of jsf-impl Show documentation
Show all versions of jsf-impl Show documentation
This is the master POM file for Oracle's Implementation of the JSF 2.2 Specification.
The newest version!
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 1997-2012 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*
*
* This file incorporates work covered by the following copyright and
* permission notice:
*
* Copyright 2005-2007 The Apache Software Foundation
*
* 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.sun.faces.facelets.tag.ui;
import com.sun.faces.facelets.util.DevTools;
import com.sun.faces.facelets.util.FastWriter;
import javax.faces.component.UIComponentBase;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
/**
* @author Jacob Hookom
*/
public final class UIDebug extends UIComponentBase {
public final static String COMPONENT_TYPE = "facelets.ui.Debug";
public final static String COMPONENT_FAMILY = "facelets";
private static long nextId = System.currentTimeMillis();
private final static String KEY = "facelets.ui.DebugOutput";
public final static String DEFAULT_HOTKEY = "D";
private String hotkey = DEFAULT_HOTKEY;
public UIDebug() {
super();
this.setTransient(true);
this.setRendererType(null);
}
public String getFamily() {
return COMPONENT_FAMILY;
}
public List getChildren() {
return new ArrayList() {
public boolean add(Object o) {
throw new IllegalStateException(" does not support children");
}
public void add(int index, Object o) {
throw new IllegalStateException(" does not support children");
}
};
}
public void encodeBegin(FacesContext facesContext) throws IOException {
if (isRendered()) {
pushComponentToEL(facesContext, this);
String actionId = facesContext.getApplication().getViewHandler().getActionURL(facesContext, facesContext.getViewRoot().getViewId());
StringBuffer sb = new StringBuffer(512);
sb.append("//\n");
ResponseWriter writer = facesContext.getResponseWriter();
writer.startElement("span", this);
writer.writeAttribute("id", getClientId(facesContext), "id");
writer.startElement("script", this);
writer.writeAttribute("language", "javascript", "language");
writer.writeAttribute("type", "text/javascript", "type");
writer.writeText(sb.toString(), this, null);
writer.endElement("script");
writer.endElement("span");
}
}
private static String writeDebugOutput(FacesContext faces) throws IOException {
FastWriter fw = new FastWriter();
DevTools.debugHtml(fw, faces);
Map session = faces.getExternalContext().getSessionMap();
Map debugs = (Map) session.get(KEY);
if (debugs == null) {
debugs = new LinkedHashMap() {
protected boolean removeEldestEntry(Map.Entry eldest) {
return (this.size() > 5);
}
};
}
session.put(KEY, debugs);
String id = "" + nextId++;
debugs.put(id, fw.toString());
return id;
}
private static String fetchDebugOutput(FacesContext faces, String id) {
Map session = faces.getExternalContext().getSessionMap();
Map debugs = (Map) session.get(KEY);
if (debugs != null) {
return (String) debugs.get(id);
}
return null;
}
public static boolean debugRequest(FacesContext faces) {
String id = (String) faces.getExternalContext().getRequestParameterMap().get(KEY);
if (id != null) {
Object resp = faces.getExternalContext().getResponse();
if (!faces.getResponseComplete()
&& resp instanceof HttpServletResponse) {
try {
HttpServletResponse httpResp = (HttpServletResponse) resp;
String page = fetchDebugOutput(faces, id);
if (page != null) {
httpResp.setContentType("text/html");
httpResp.getWriter().write(page);
} else {
httpResp.setContentType("text/plain");
httpResp.getWriter().write("No Debug Output Available");
}
httpResp.flushBuffer();
faces.responseComplete();
} catch (IOException e) {
return false;
}
return true;
}
}
return false;
}
public String getHotkey() {
return this.hotkey;
}
public void setHotkey(String hotkey) {
this.hotkey = (hotkey != null) ? hotkey.toUpperCase() : "";
}
}