OpenDeclarationAction


1   /*******************************************************************************
2    * Copyright (c) 2000, 2005 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    *   Jesper Kamstrup Linnet (eclipse@kamstrup-linnet.dk) - initial API and implementation 
10   *          (report 36180: Callers/Callees view)
11   *******************************************************************************/
12  package org.eclipse.jdt.internal.ui.callhierarchy;
13  
14  import org.eclipse.jdt.core.IMember;
15  import org.eclipse.jdt.internal.corext.callhierarchy.MethodWrapper;
16  import org.eclipse.jdt.internal.ui.util.SelectionUtil;
17  import org.eclipse.jdt.ui.actions.OpenAction;
18  import org.eclipse.jface.viewers.ISelection;
19  import org.eclipse.ui.IWorkbenchSite;
20  
21  /**
22   * This class is used for opening the declaration of an element from the call hierarchy view.
23   */
24  class OpenDeclarationAction extends OpenAction {
25      public OpenDeclarationAction(IWorkbenchSite site) {
26          super(site);
27      }
28  
29      public boolean canActionBeAdded() {
30          // It is safe to cast to IMember since the selection has already been converted
31          IMember member = (IMember) SelectionUtil.getSingleElement(getSelection());
32          
33          if (member != null) {
34              return true;
35          }
36  
37          return false;
38      }
39  
40      public ISelection getSelection() {
41          return CallHierarchyUI.convertSelection(getSelectionProvider().getSelection());
42      }
43  
44      public Object   getElementToOpen(Object   object) {
45          if (object instanceof MethodWrapper) {
46              return ((MethodWrapper) object).getMember();
47          }
48          return object;
49      }   
50  }
51
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