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Java > Open Source Codes > classycle > renderer > PlainClassRenderer


1 /*
2  * Copyright (c) 2003-2006, Franz-Josef Elmer, All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions are met:
6  *
7  * - Redistributions of source code must retain the above copyright notice,
8  * this list of conditions and the following disclaimer.
9  * - Redistributions in binary form must reproduce the above copyright notice,
10  * this list of conditions and the following disclaimer in the documentation
11  * and/or other materials provided with the distribution.
12  *
13  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
14  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
15  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
20  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
21  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
22  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
23  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24  */

25 package classycle.renderer;
26
27 import classycle.ClassAttributes;
28 import classycle.graph.AtomicVertex;
29 import classycle.graph.StrongComponent;
30
31 /**
32  * Plain text renderer of an {@link AtomicVertex} with
33  * {@link ClassAttributes}.
34  *
35  * @author Franz-Josef Elmer
36  */

37 public class PlainClassRenderer implements AtomicVertexRenderer
38 {
39   /**
40    * Renderes the specified vertex. It is assumed that the vertex attributes
41    * are of the type {@link classycle.ClassAttributes}.
42    * @param vertex Vertex to be rendered.
43    * @return the rendered vertex.
44    */

45   public String JavaDoc render(AtomicVertex vertex, StrongComponent cycle,
46                        int layerIndex)
47   {
48     if (vertex.getAttributes() instanceof ClassAttributes)
49     {
50       int usesInternal = 0;
51       int usesExternal = 0;
52       for (int i = 0, n = vertex.getNumberOfOutgoingArcs(); i < n; i++)
53       {
54         if (((AtomicVertex) vertex.getHeadVertex(i)).isGraphVertex())
55         {
56           usesInternal++;
57         } else
58         {
59           usesExternal++;
60         }
61       }
62       StringBuffer JavaDoc result
63           = new StringBuffer JavaDoc(vertex.getAttributes().toString());
64       result.append(": Used by ").append(vertex.getNumberOfIncomingArcs())
65             .append(" classes. Uses ").append(usesInternal).append('/')
66             .append(usesExternal).append(" internal/external classes");
67       return new String JavaDoc(result);
68     }
69     throw new IllegalArgumentException JavaDoc(
70                   "Missing class attributes in vertex " + vertex);
71   }
72 } //class
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