2 * shortener - PageToadlet.java - Copyright © 2010 David Roden
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 package net.pterodactylus.sone.web.page;
20 import java.io.IOException;
22 import java.util.Map.Entry;
24 import net.pterodactylus.sone.web.page.Page.Request.Method;
25 import freenet.client.HighLevelSimpleClient;
26 import freenet.clients.http.LinkEnabledCallback;
27 import freenet.clients.http.Toadlet;
28 import freenet.clients.http.ToadletContext;
29 import freenet.clients.http.ToadletContextClosedException;
30 import freenet.support.MultiValueTable;
31 import freenet.support.api.Bucket;
32 import freenet.support.api.HTTPRequest;
33 import freenet.support.io.BucketTools;
34 import freenet.support.io.Closer;
37 * {@link Toadlet} implementation that is wrapped around a {@link Page}.
39 * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
41 public class PageToadlet extends Toadlet implements LinkEnabledCallback {
43 /** The name of the menu item. */
44 private final String menuName;
46 /** The page that handles processing. */
47 private final Page page;
49 /** The path prefix for the page. */
50 private final String pathPrefix;
53 * Creates a new toadlet that hands off processing to a {@link Page}.
55 * @param highLevelSimpleClient
56 * The high-level simple client
58 * The name of the menu item
60 * The page to handle processing
62 * Prefix that is prepended to all {@link Page#getPath()} return
65 protected PageToadlet(HighLevelSimpleClient highLevelSimpleClient, String menuName, Page page, String pathPrefix) {
66 super(highLevelSimpleClient);
67 this.menuName = menuName;
69 this.pathPrefix = pathPrefix;
73 * Returns the name to display in the menu.
75 * @return The name in the menu
77 public String getMenuName() {
85 public String path() {
86 return pathPrefix + page.getPath();
90 * Handles a HTTP GET request.
93 * The URI of the request
96 * @param toadletContext
99 * if an I/O error occurs
100 * @throws ToadletContextClosedException
101 * if the toadlet context is closed
103 public void handleMethodGET(URI uri, HTTPRequest httpRequest, ToadletContext toadletContext) throws IOException, ToadletContextClosedException {
104 handleRequest(new Page.Request(uri, Method.GET, httpRequest, toadletContext));
108 * Handles a HTTP POST request.
111 * The URI of the request
114 * @param toadletContext
115 * The toadlet context
116 * @throws IOException
117 * if an I/O error occurs
118 * @throws ToadletContextClosedException
119 * if the toadlet context is closed
121 public void handleMethodPOST(URI uri, HTTPRequest httpRequest, ToadletContext toadletContext) throws IOException, ToadletContextClosedException {
122 handleRequest(new Page.Request(uri, Method.POST, httpRequest, toadletContext));
129 public String toString() {
130 return getClass().getName() + "[path=" + path() + ",page=" + page + "]";
134 * Handles a HTTP request.
137 * The request to handle
138 * @throws IOException
139 * if an I/O error occurs
140 * @throws ToadletContextClosedException
141 * if the toadlet context is closed
143 private void handleRequest(Page.Request pageRequest) throws IOException, ToadletContextClosedException {
146 Page.Response pageResponse = page.handleRequest(pageRequest);
147 MultiValueTable<String, String> headers = new MultiValueTable<String, String>();
148 if (pageResponse.getHeaders() != null) {
149 for (Entry<String, String> headerEntry : pageResponse.getHeaders().entrySet()) {
150 headers.put(headerEntry.getKey(), headerEntry.getValue());
153 data = pageRequest.getToadletContext().getBucketFactory().makeBucket(-1);
154 if (pageResponse.getContent() != null) {
156 BucketTools.copyFrom(data, pageResponse.getContent(), -1);
158 Closer.close(pageResponse.getContent());
161 /* get an OutputStream and close it immediately. */
162 Closer.close(data.getOutputStream());
164 writeReply(pageRequest.getToadletContext(), pageResponse.getStatusCode(), pageResponse.getContentType(), pageResponse.getStatusText(), headers, data);
165 } catch (Throwable t1) {
166 writeInternalError(t1, pageRequest.getToadletContext());
176 public boolean isEnabled(ToadletContext toadletContext) {
177 if (page instanceof LinkEnabledCallback) {
178 return ((LinkEnabledCallback) page).isEnabled(toadletContext);