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Java > Open Source Codes > org > snipsnap > graph > PSPContentRenderer


1 /*
2  * This file is part of "SnipSnap Wiki/Weblog".
3  *
4  * Copyright (c) 2002 Stephan J. Schmidt, Matthias L. Jugel
5  * All Rights Reserved.
6  *
7  * Please visit http://snipsnap.org/ for updates and contact.
8  *
9  * --LICENSE NOTICE--
10  * This program is free software; you can redistribute it and/or
11  * modify it under the terms of the GNU General Public License
12  * as published by the Free Software Foundation; either version 2
13  * of the License, or (at your option) any later version.
14  *
15  * This program is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18  * GNU General Public License for more details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with this program; if not, write to the Free Software
22  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23  * --LICENSE NOTICE--
24  */
25 package org.snipsnap.graph;
26
27 import org.snipsnap.graph.builder.StringDirectedAcyclicGraphBuilder;
28 import org.snipsnap.graph.context.GraphRendererContext;
29 import org.snipsnap.graph.renderer.DirectedAcyclicGraphRenderer;
30 import org.snipsnap.graph.renderer.Renderer;
31
32 import javax.servlet.ServletOutputStream JavaDoc;
33 import javax.servlet.http.HttpServletRequest JavaDoc;
34 import javax.servlet.http.HttpServletResponse JavaDoc;
35 import java.io.IOException JavaDoc;
36
37 public class PSPContentRenderer implements ContentRenderer {
38   private Renderer renderer = new DirectedAcyclicGraphRenderer();
39
40   public String JavaDoc getName() {
41     return "psp";
42   }
43
44   public Renderer getRenderer() {
45     return renderer;
46   }
47
48   public void render(HttpServletRequest JavaDoc request, HttpServletResponse JavaDoc response, String JavaDoc content) throws IOException JavaDoc {
49     response.setContentType("image/png");
50
51     ServletOutputStream JavaDoc out = response.getOutputStream();
52
53     StringDirectedAcyclicGraphBuilder builder = new StringDirectedAcyclicGraphBuilder(content);
54     renderer.render(builder.build(), out, new GraphRendererContext());
55   }
56 }
57
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