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Java > Open Source Codes > org > eclipse > debug > internal > core > commands > StepFiltersCommand


1 /*******************************************************************************
2  * Copyright (c) 2006, 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.debug.internal.core.commands;
12
13 import org.eclipse.core.runtime.CoreException;
14 import org.eclipse.core.runtime.IAdaptable;
15 import org.eclipse.debug.core.DebugPlugin;
16 import org.eclipse.debug.core.ILaunch;
17 import org.eclipse.debug.core.commands.IStepFiltersHandler;
18 import org.eclipse.debug.core.model.IDebugElement;
19 import org.eclipse.debug.core.model.IDebugTarget;
20 import org.eclipse.debug.core.model.IProcess;
21 import org.eclipse.debug.core.model.IStepFilters;
22
23 /**
24  * Default toggle step filters command for the standard debug model.
25  *
26  * @since 3.3
27  */
28 public class StepFiltersCommand extends ForEachCommand implements IStepFiltersHandler {
29
30     protected Object JavaDoc getTarget(Object JavaDoc element) {
31         IDebugTarget[] targets = getDebugTargets(element);
32         if (targets.length > 0) {
33             IStepFilters[] filters = new IStepFilters[targets.length];
34             for (int i = 0; i < targets.length; i++) {
35                 IDebugTarget target = targets[i];
36                 if (target instanceof IStepFilters) {
37                     filters[i] = (IStepFilters) target;
38                 } else {
39                     filters[i] = (IStepFilters) ((IAdaptable)element).getAdapter(IStepFilters.class);
40                 }
41                 if (filters[i] == null) {
42                     return null;
43                 }
44             }
45             return filters;
46         }
47         return null;
48     }
49     
50    private IDebugTarget[] getDebugTargets(Object JavaDoc element) {
51         if (element instanceof IDebugElement) {
52             IDebugElement debugElement = (IDebugElement) element;
53             return new IDebugTarget[] { debugElement.getDebugTarget() };
54         } else if (element instanceof ILaunch) {
55             ILaunch launch = (ILaunch) element;
56             return launch.getDebugTargets();
57         } else if (element instanceof IProcess) {
58             IProcess process = (IProcess) element;
59             return process.getLaunch().getDebugTargets();
60         } else {
61             return new IDebugTarget[0];
62         }
63     }
64
65     /* (non-Javadoc)
66      * @see org.eclipse.debug.internal.core.commands.ForEachCommand#execute(java.lang.Object)
67      */
68     protected void execute(Object JavaDoc target) throws CoreException {
69         if (target == null) {
70             return;
71         }
72         IStepFilters[] filters = (IStepFilters[]) target;
73         for (int i = 0; i < filters.length; i++) {
74             IStepFilters filter = filters[i];
75             filter.setStepFiltersEnabled(DebugPlugin.isUseStepFilters());
76         }
77     }
78     
79     /* (non-Javadoc)
80      * @see org.eclipse.debug.internal.core.commands.ForEachCommand#isExecutable(java.lang.Object)
81      */
82     protected boolean isExecutable(Object JavaDoc target) {
83         IStepFilters[] filters = (IStepFilters[]) target;
84         for (int i = 0; i < filters.length; i++) {
85             IStepFilters filter = filters[i];
86             if (filter == null || !filter.supportsStepFilters()) {
87                 return false;
88             }
89         }
90         return true;
91     }
92 }
93
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