ScenarioTreeContentProvider


1   /*
2   * CLIF is a Load Injection Framework
3   * Copyright (C) 2004 France Telecom R&D
4   *
5   * This library is free software; you can redistribute it and/or
6   * modify it under the terms of the GNU Lesser General Public
7   * License as published by the Free Software Foundation; either
8   * version 2 of the License, or (at your option) any later version.
9   *
10  * This library is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13  * Lesser General Public License for more details.
14  *
15  * You should have received a copy of the GNU Lesser General Public
16  * License along with this library; if not, write to the Free Software
17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18  *
19  * CLIF 
20  *
21  * Contact: clif@objectweb.org
22  */
23  package org.objectweb.clif.scenario.util.isac.gui.tree;
24  
25  import org.objectweb.clif.scenario.util.isac.util.tree.ScenarioNode;
26  import org.apache.log4j.Category;
27  import org.eclipse.jface.viewers.ITreeContentProvider;
28  import java.util.Vector  ;
29  import org.eclipse.jface.viewers.Viewer;
30  
31  /**
32   * This class is an extension to ContentProvider class, which permit to build the tree
33   * showed by the TreeViewer with ScenarioNode elements
34   * 
35   * @author JC Meillaud
36   * @author A Peyrard
37   */
38  public class ScenarioTreeContentProvider implements ITreeContentProvider {
39      static Category cat = Category.getInstance(ScenarioTreeContentProvider.class.getName());
40      
41      /**
42       * Method which return a table object containing all the children nodes
43       * @param element The parent node
44       * @return The children nodes
45       */
46      public Object  [] getChildren(Object   element) {
47          cat.debug("-> getChildren") ;
48          Vector   children = ((ScenarioNode) element).getChildren();
49          return (Object  []) children.toArray(new Object  [children.size()]);
50          //Object[] kids = new Object[children.size()];
51          //for (int i = 0; i < children.size(); i++)
52          //    kids[i] = children.elementAt(i);
53  
54          //return kids;
55      }
56  
57      /**
58       * Method which return a table of object, in this case the children nodes
59       * @param element The parent node
60       * @return The children nodes
61       */
62      public Object  [] getElements(Object   element) {
63          cat.debug("-> getElements") ;   
64          return getChildren(element);
65      }
66  
67      /**
68       * Method which analyse if a node have got children
69       * @param element The parent node
70       * @return True if the node have got children
71       */
72      public boolean hasChildren(Object   element) {
73          cat.debug("-> hasChildren") ;
74          return getChildren(element).length > 0;
75      }
76  
77      /**
78       * Method returning the parent of a node
79       * @param element The child node
80       * @return The parent node
81       */
82      public Object   getParent(Object   element) {
83          cat.debug("-> getParent") ;
84          return ((ScenarioNode) element).getParent();
85      }
86  
87      /**
88       * Do nothing
89       */
90      public void dispose() {
91          cat.debug("-> dispose") ;
92      }
93  
94      /**
95       * Do nothing
96       * @param viewer
97       * @param old_input
98       * @param new_input
99       */
100     public void inputChanged(
101         Viewer viewer,
102         Object   old_input,
103         Object   new_input) {
104     }
105 
106 }
107
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