WatchAction


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    *     IBM Corporation - initial API and implementation
10   *******************************************************************************/
11  package org.eclipse.jdt.internal.debug.ui.actions;
12  
13  
14  import java.util.Iterator  ;
15  
16  import org.eclipse.core.runtime.IAdaptable;
17  import org.eclipse.debug.core.DebugException;
18  import org.eclipse.debug.core.DebugPlugin;
19  import org.eclipse.debug.core.ILaunch;
20  import org.eclipse.debug.core.model.IDebugElement;
21  import org.eclipse.debug.core.model.IWatchExpression;
22  import org.eclipse.debug.ui.DebugUITools;
23  import org.eclipse.jdt.debug.core.IJavaVariable;
24  import org.eclipse.jdt.internal.debug.ui.JDIDebugUIPlugin;
25  import org.eclipse.jface.viewers.IStructuredSelection;
26  
27  /**
28   * Create a watch item from a selected variable
29   */
30  public class WatchAction extends InspectAction {
31          
32      public void run() {
33          Object   selectedObject= getSelectedObject();
34          if (selectedObject instanceof IStructuredSelection) {
35              IStructuredSelection selection = (IStructuredSelection)selectedObject;
36              Iterator   elements = selection.iterator();
37              while (elements.hasNext()) {
38                  try {
39                      createWatchExpression(((IJavaVariable)elements.next()).getName());
40                  } catch (DebugException e) {
41                      JDIDebugUIPlugin.log(e);
42                      return;
43                  }
44              }
45              showExpressionView();
46          } else if (selectedObject instanceof String  ) {
47              createWatchExpression((String  ) selectedObject);
48              showExpressionView();
49          }
50      }
51  
52      private void createWatchExpression(String   snippet) {
53          IWatchExpression expression= DebugPlugin.getDefault().getExpressionManager().newWatchExpression(snippet);
54          DebugPlugin.getDefault().getExpressionManager().addExpression(expression);
55          IAdaptable object = DebugUITools.getDebugContext();
56          IDebugElement context= null;
57          if (object instanceof IDebugElement) {
58              context= (IDebugElement) object;
59          } else if (object instanceof ILaunch) {
60              context= ((ILaunch) object).getDebugTarget();
61          }
62          expression.setExpressionContext(context);
63      }
64  
65  }
66
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