CallersTreeContentProvider


1   /*******************************************************************************
2    * Copyright (c) 2000, 2007 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.views.dependencies;
12  
13  import org.eclipse.jface.viewers.ITreeContentProvider;
14  import org.eclipse.osgi.service.resolver.BundleDescription;
15  import org.eclipse.pde.core.plugin.IPluginBase;
16  import org.eclipse.pde.core.plugin.IPluginModelBase;
17  
18  public class CallersTreeContentProvider extends CallersContentProvider
19          implements ITreeContentProvider {
20  
21      /**
22       * Constructor.
23       */
24      public CallersTreeContentProvider(DependenciesView view) {
25          super(view);
26      }
27  
28      public Object  [] getChildren(Object   parentElement) {
29          if (parentElement instanceof IPluginBase) {
30              parentElement = ((IPluginBase)parentElement).getModel();
31          }
32          if (parentElement instanceof IPluginModelBase ) {
33              parentElement = ((IPluginModelBase)parentElement).getBundleDescription();
34          }
35          if (parentElement instanceof BundleDescription) {
36              return findReferences((BundleDescription)parentElement).toArray();
37          }
38          return new Object  [0];
39      }
40  
41      /**
42       * @see IStructuredContentProvider#getElements(Object)
43       * @return Object[] with 0 or 1 IPluginBase
44       */
45      public Object  [] getElements(Object   inputElement) {
46          if (inputElement instanceof IPluginModelBase) {
47              return new Object  [] { ((IPluginModelBase) inputElement)
48                      .getPluginBase() };
49          }
50          return new Object  [0];
51      }
52  
53      /**
54       * @see ITreeContentProvider#getParent(Object)
55       */
56      public Object   getParent(Object   element) {
57          return null;
58      }
59  
60      /**
61       * @see ITreeContentProvider#hasChildren(Object)
62       */
63      public boolean hasChildren(Object   element) {
64          return getChildren(element).length > 0;
65      }
66  
67  }
68
A to Z: JavaDoc & Examples Daily Java News & Articles Open Source Projects Open Source Codes Free Computer Books Remove Frame
Popular Tags