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Java > Open Source Codes > org > eclipse > debug > internal > ui > actions > expressions > 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 JavaDoc;
15 import java.util.List JavaDoc;
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 JavaDoc expressions = new ArrayList JavaDoc();
35         for (int i = paths.length-1; i >=0; i--) {
36             TreePath path = paths[i];
37             Object JavaDoc 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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