CalleesTreeContentProvider


1   /*******************************************************************************
2    * Copyright (c) 2000, 2006 IBM Corporation and others.
3    * All rights reserved. This program and the accompanying materials
4    * are made available under the terms of the Eclipse Public License v1.0
5    * which accompanies this distribution, and is available at
6    * http://www.eclipse.org/legal/epl-v10.html
7    *
8    * Contributors:
9    *     IBM Corporation - initial API and implementation
10   *******************************************************************************/
11  package org.eclipse.pde.internal.ui.view;
12  
13  import org.eclipse.jface.viewers.ITreeContentProvider;
14  import org.eclipse.pde.core.plugin.IPlugin;
15  import org.eclipse.pde.core.plugin.IPluginBase;
16  import org.eclipse.pde.core.plugin.IPluginImport;
17  import org.eclipse.pde.core.plugin.IPluginModelBase;
18  import org.eclipse.pde.internal.core.PDECore;
19  
20  public class CalleesTreeContentProvider extends CalleesContentProvider
21          implements ITreeContentProvider {
22  
23      /**
24       * Constructor.
25       */
26      public CalleesTreeContentProvider(DependenciesView view) {
27          super(view);
28      }
29  
30      /**
31       * @see ITreeContentProvider#getChildren(Object)
32       */
33      public Object  [] getChildren(Object   parentElement) {
34          if (parentElement instanceof IPluginBase) {
35              IPluginBase plugin = (IPluginBase) parentElement;
36              return findCallees(plugin);
37          } else if (parentElement instanceof IPluginImport) {
38              IPluginImport pluginImport = (IPluginImport) parentElement;
39              String   id = pluginImport.getId();
40              IPlugin importedPlugin = PDECore.getDefault().findPlugin(id);
41              if (importedPlugin != null)
42                  return findCallees(importedPlugin);
43  
44          }
45          return new Object  [0];
46      }
47  
48      /**
49       * @see IStructuredContentProvider#getElements(Object)
50       * @return Object[] of IPluginBase
51       */
52      public Object  [] getElements(Object   inputElement) {
53          if (inputElement instanceof IPluginModelBase) {
54              return new Object  [] { ((IPluginModelBase) inputElement)
55                      .getPluginBase() };
56          }
57          return new Object  [0];
58      }
59  
60      /**
61       * @see ITreeContentProvider#getParent(Object)
62       */
63      public Object   getParent(Object   element) {
64          return null;
65      }
66  
67      /**
68       * @see ITreeContentProvider#hasChildren(Object)
69       */
70      public boolean hasChildren(Object   element) {
71          return getChildren(element).length > 0;
72      }
73  
74  }
75
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