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1 | /********************************************************************** |
2 | * Copyright (c) 2012 Ericsson | |
3 | * | |
4 | * All rights reserved. This program and the accompanying materials are | |
5 | * made available under the terms of the Eclipse Public License v1.0 which | |
6 | * accompanies this distribution, and is available at | |
7 | * http://www.eclipse.org/legal/epl-v10.html | |
8 | * | |
9 | * Contributors: | |
10 | * Bernd Hufmann - Initial API and implementation | |
11 | **********************************************************************/ | |
115b4a01 | 12 | package org.eclipse.linuxtools.internal.lttng2.ui.views.control.handlers; |
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13 | |
14 | import org.eclipse.core.commands.ExecutionEvent; | |
15 | import org.eclipse.core.commands.ExecutionException; | |
9315aeee | 16 | import org.eclipse.linuxtools.internal.lttng2.core.control.model.TargetNodeState; |
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17 | |
18 | /** | |
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19 | * <p> |
20 | * Command handler implementation to disconnect from a target host. | |
21 | * </p> | |
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22 | * |
23 | * @author Bernd Hufmann | |
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24 | */ |
25 | public class DisconnectHandler extends BaseNodeHandler { | |
26 | ||
27 | // ------------------------------------------------------------------------ | |
28 | // Operations | |
29 | // ------------------------------------------------------------------------ | |
30 | ||
31 | /* | |
32 | * (non-Javadoc) | |
115b4a01 | 33 | * @see org.eclipse.linuxtools.internal.lttng2.ui.views.control.handlers.BaseNodeHandler#execute(org.eclipse.core.commands.ExecutionEvent) |
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34 | */ |
35 | @Override | |
36 | public Object execute(ExecutionEvent event) throws ExecutionException { | |
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37 | fLock.lock(); |
38 | try { | |
c56972bb | 39 | fTargetNode.disconnect(); |
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40 | } finally { |
41 | fLock.unlock(); | |
42 | } | |
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43 | return null; |
44 | } | |
45 | ||
46 | /* | |
47 | * (non-Javadoc) | |
115b4a01 | 48 | * @see org.eclipse.linuxtools.internal.lttng2.ui.views.control.handlers.BaseNodeHandler#isEnabled() |
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49 | */ |
50 | @Override | |
51 | public boolean isEnabled() { | |
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52 | boolean isEnabled = false; |
53 | fLock.lock(); | |
54 | try { | |
55 | isEnabled = super.isEnabled() && (fTargetNode.getTargetNodeState() == TargetNodeState.CONNECTED); | |
56 | } finally { | |
57 | fLock.unlock(); | |
58 | } | |
59 | return isEnabled; | |
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60 | } |
61 | } |