RemoveExpressionAction


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.debug.internal.ui.actions.expressions;
12  
13  
14  import java.util.ArrayList  ;
15  import java.util.List  ;
16  
17  import org.eclipse.core.runtime.IProgressMonitor;
18  import org.eclipse.core.runtime.IStatus;
19  import org.eclipse.core.runtime.Status;
20  import org.eclipse.debug.core.DebugPlugin;
21  import org.eclipse.debug.core.IExpressionManager;
22  import org.eclipse.debug.core.model.IExpression;
23  import org.eclipse.debug.internal.ui.actions.AbstractRemoveActionDelegate;
24  import org.eclipse.jface.action.IAction;
25  import org.eclipse.jface.viewers.TreePath;
26  import org.eclipse.jface.viewers.TreeSelection;
27  import org.eclipse.ui.progress.WorkbenchJob;
28  
29  public class RemoveExpressionAction extends AbstractRemoveActionDelegate {
30      
31      protected IExpression[] getExpressions() {
32          TreeSelection selection = (TreeSelection) getSelection();
33          TreePath[] paths = selection.getPaths();
34          List   expressions = new ArrayList  ();
35          for (int i = paths.length-1; i >=0; i--) {
36              TreePath path = paths[i];
37              Object   segment = path.getFirstSegment();
38              if (segment instanceof IExpression) {
39                  expressions.add(segment);
40              }
41          }
42          return (IExpression[]) expressions.toArray(new IExpression[expressions.size()]);
43      }
44  
45      /* (non-Javadoc)
46       * @see org.eclipse.ui.IActionDelegate#run(org.eclipse.jface.action.IAction)
47       */
48      public void run(IAction action) {
49          WorkbenchJob job = new WorkbenchJob("remove expression") { //$NON-NLS-1$
50              public IStatus runInUIThread(IProgressMonitor monitor) {
51                  IExpressionManager expManager = DebugPlugin.getDefault().getExpressionManager();
52                  IExpression[] exp = getExpressions();
53                  if (exp != null) {
54                      expManager.removeExpressions(exp);
55                  }
56                  return Status.OK_STATUS;
57              }
58          };
59          job.setSystem(true);
60          schedule(job);
61      }
62  }
63  
64
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