001    /**
002     * Copyright (c) 2000-2013 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.kernel.servlet;
016    
017    import com.liferay.portal.kernel.io.unsync.UnsyncStringWriter;
018    
019    import java.io.IOException;
020    import java.io.Writer;
021    
022    import java.util.Enumeration;
023    
024    import javax.el.ELContext;
025    
026    import javax.servlet.Servlet;
027    import javax.servlet.ServletConfig;
028    import javax.servlet.ServletContext;
029    import javax.servlet.ServletException;
030    import javax.servlet.ServletRequest;
031    import javax.servlet.ServletResponse;
032    import javax.servlet.http.HttpSession;
033    import javax.servlet.jsp.ErrorData;
034    import javax.servlet.jsp.JspWriter;
035    import javax.servlet.jsp.PageContext;
036    import javax.servlet.jsp.tagext.BodyContent;
037    
038    /**
039     * @author Brian Wing Shun Chan
040     * @author Shuyang Zhou
041     */
042    public class PageContextWrapper extends PageContext {
043    
044            public PageContextWrapper(PageContext pageContext) {
045                    _pageContext = pageContext;
046            }
047    
048            @Override
049            public Object findAttribute(String name) {
050                    return _pageContext.findAttribute(name);
051            }
052    
053            @Override
054            public void forward(String relativeUrlPath)
055                    throws IOException, ServletException {
056    
057                    _pageContext.forward(relativeUrlPath);
058            }
059    
060            @Override
061            public Object getAttribute(String name) {
062                    return _pageContext.getAttribute(name);
063            }
064    
065            @Override
066            public Object getAttribute(String name, int scope) {
067                    return _pageContext.getAttribute(name, scope);
068            }
069    
070            @Override
071            public Enumeration<String> getAttributeNamesInScope(int scope) {
072                    return _pageContext.getAttributeNamesInScope(scope);
073            }
074    
075            @Override
076            public int getAttributesScope(String name) {
077                    return _pageContext.getAttributesScope(name);
078            }
079    
080            @Override
081            public ELContext getELContext() {
082                    return _pageContext.getELContext();
083            }
084    
085            @Override
086            public ErrorData getErrorData() {
087                    return super.getErrorData();
088            }
089    
090            @Override
091            public Exception getException() {
092                    return _pageContext.getException();
093            }
094    
095            /**
096             * @deprecated As of 6.1.0
097             */
098            @Override
099            public javax.servlet.jsp.el.ExpressionEvaluator getExpressionEvaluator() {
100                    return _pageContext.getExpressionEvaluator();
101            }
102    
103            @Override
104            public JspWriter getOut() {
105                    return _pageContext.getOut();
106            }
107    
108            @Override
109            public Object getPage() {
110                    return _pageContext.getPage();
111            }
112    
113            @Override
114            public ServletRequest getRequest() {
115                    return _pageContext.getRequest();
116            }
117    
118            @Override
119            public ServletResponse getResponse() {
120                    return _pageContext.getResponse();
121            }
122    
123            @Override
124            public ServletConfig getServletConfig() {
125                    return _pageContext.getServletConfig();
126            }
127    
128            @Override
129            public ServletContext getServletContext() {
130                    return _pageContext.getServletContext();
131            }
132    
133            @Override
134            public HttpSession getSession() {
135                    return _pageContext.getSession();
136            }
137    
138            /**
139             * @deprecated As of 6.1.0
140             */
141            @Override
142            public javax.servlet.jsp.el.VariableResolver getVariableResolver() {
143                    return _pageContext.getVariableResolver();
144            }
145    
146            public PageContext getWrappedPageContext() {
147                    return _pageContext;
148            }
149    
150            @Override
151            public void handlePageException(Exception e)
152                    throws IOException, ServletException {
153    
154                    _pageContext.handlePageException(e);
155            }
156    
157            @Override
158            public void handlePageException(Throwable t)
159                    throws IOException, ServletException {
160    
161                    _pageContext.handlePageException(t);
162            }
163    
164            @Override
165            public void include(String relativeUrlPath)
166                    throws IOException, ServletException {
167    
168                    _pageContext.include(relativeUrlPath);
169            }
170    
171            @Override
172            public void include(String relativeUrlPath, boolean flush)
173                    throws IOException, ServletException {
174    
175                    _pageContext.include(relativeUrlPath, flush);
176            }
177    
178            @Override
179            public void initialize(
180                            Servlet servlet, ServletRequest servletRequest,
181                            ServletResponse servletResponse, String errorPageURL,
182                            boolean needsSession, int bufferSize, boolean autoFlush)
183                    throws IllegalArgumentException, IllegalStateException, IOException {
184    
185                    _pageContext.initialize(
186                            servlet, servletRequest, servletResponse, errorPageURL,
187                            needsSession, bufferSize, autoFlush);
188            }
189    
190            @Override
191            public JspWriter popBody() {
192                    return _pageContext.popBody();
193            }
194    
195            @Override
196            public BodyContent pushBody() {
197                    UnsyncStringWriter unsyncStringWriter = new UnsyncStringWriter();
198    
199                    BodyContent bodyContent = (BodyContent)_pageContext.pushBody(
200                            unsyncStringWriter);
201    
202                    return new BodyContentWrapper(bodyContent, unsyncStringWriter);
203            }
204    
205            @Override
206            public JspWriter pushBody(Writer writer) {
207                    return _pageContext.pushBody(new PipingJspWriter(writer));
208            }
209    
210            @Override
211            public void release() {
212                    _pageContext.release();
213            }
214    
215            @Override
216            public void removeAttribute(String name) {
217                    _pageContext.removeAttribute(name);
218            }
219    
220            @Override
221            public void removeAttribute(String name, int scope) {
222                    _pageContext.removeAttribute(name, scope);
223            }
224    
225            @Override
226            public void setAttribute(String name, Object value) {
227                    _pageContext.setAttribute(name, value);
228            }
229    
230            @Override
231            public void setAttribute(String name, Object value, int scope) {
232                    _pageContext.setAttribute(name, value, scope);
233            }
234    
235            private PageContext _pageContext;
236    
237    }