2 * Sone - GetPostAjaxPage.java - Copyright © 2010–2013 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.ajax;
20 import java.io.StringWriter;
21 import static com.fasterxml.jackson.databind.node.JsonNodeFactory.instance;
23 import com.google.common.base.Optional;
25 import net.pterodactylus.sone.data.Post;
26 import net.pterodactylus.sone.data.Sone;
27 import net.pterodactylus.sone.web.WebInterface;
28 import net.pterodactylus.sone.web.page.FreenetRequest;
29 import net.pterodactylus.util.io.Closer;
30 import net.pterodactylus.util.template.Template;
31 import net.pterodactylus.util.template.TemplateContext;
32 import net.pterodactylus.util.template.TemplateException;
34 import com.fasterxml.jackson.databind.JsonNode;
35 import com.fasterxml.jackson.databind.node.ObjectNode;
38 * This AJAX handler retrieves information and rendered representation of a
41 * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
43 public class GetPostAjaxPage extends JsonPage {
45 /** The template to render for posts. */
46 private final Template postTemplate;
49 * Creates a new “get post” AJAX handler.
52 * The Sone web interface
54 * The template to render for posts
56 public GetPostAjaxPage(WebInterface webInterface, Template postTemplate) {
57 super("getPost.ajax", webInterface);
58 this.postTemplate = postTemplate;
65 protected JsonReturnObject createJsonObject(FreenetRequest request) {
66 String postId = request.getHttpRequest().getParam("post");
67 Optional<Post> post = webInterface.getCore().getPost(postId);
68 if (!post.isPresent()) {
69 return createErrorJsonObject("invalid-post-id");
71 return createSuccessJsonObject().put("post", createJsonPost(request, post.get(), getCurrentSone(request.getToadletContext())));
78 protected boolean needsFormPassword() {
87 * Creates a JSON object from the given post. The JSON object will only
88 * contain the ID of the post, its time, and its rendered HTML code.
91 * The request being processed
93 * The post to create a JSON object from
95 * The currently logged in Sone (to store in the template)
96 * @return The JSON representation of the post
98 private JsonNode createJsonPost(FreenetRequest request, Post post, Sone currentSone) {
99 ObjectNode jsonPost = new ObjectNode(instance);
100 jsonPost.put("id", post.getId());
101 jsonPost.put("sone", post.getSone().getId());
102 jsonPost.put("recipient", post.getRecipientId().orNull());
103 jsonPost.put("time", post.getTime());
104 StringWriter stringWriter = new StringWriter();
105 TemplateContext templateContext = webInterface.getTemplateContextFactory().createTemplateContext();
106 templateContext.set("core", webInterface.getCore());
107 templateContext.set("request", request);
108 templateContext.set("post", post);
109 templateContext.set("currentSone", currentSone);
110 templateContext.set("localSones", webInterface.getCore().getLocalSones());
112 postTemplate.render(templateContext, stringWriter);
113 } catch (TemplateException te1) {
114 /* TODO - shouldn’t happen. */
116 Closer.close(stringWriter);
118 jsonPost.put("html", stringWriter.toString());