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1 | /********************************************************************** |
2 | * Copyright (c) 2012 Ericsson | |
cfdb727a | 3 | * |
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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 | |
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8 | * |
9 | * Contributors: | |
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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 java.util.Iterator; | |
15 | ||
16 | import org.eclipse.core.commands.ExecutionEvent; | |
17 | import org.eclipse.core.commands.ExecutionException; | |
18 | import org.eclipse.jface.viewers.ISelection; | |
19 | import org.eclipse.jface.viewers.StructuredSelection; | |
9315aeee | 20 | import org.eclipse.linuxtools.internal.lttng2.core.control.model.TargetNodeState; |
115b4a01 | 21 | import org.eclipse.linuxtools.internal.lttng2.ui.views.control.ControlView; |
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22 | import org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.impl.TargetNodeComponent; |
23 | import org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.impl.TraceControlComponent; | |
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24 | import org.eclipse.ui.IWorkbenchPage; |
25 | ||
26 | /** | |
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27 | * <p> |
28 | * Command handler implementation to refresh node configuration. | |
29 | * </p> | |
cfdb727a | 30 | * |
dbd4432d | 31 | * @author Bernd Hufmann |
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32 | */ |
33 | public class RefreshHandler extends BaseControlViewHandler { | |
34 | ||
35 | // ------------------------------------------------------------------------ | |
36 | // Attributes | |
37 | // ------------------------------------------------------------------------ | |
38 | /** | |
39 | * The node component reference. | |
40 | */ | |
41 | private TargetNodeComponent fNode; | |
cfdb727a | 42 | |
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43 | // ------------------------------------------------------------------------ |
44 | // Operations | |
45 | // ------------------------------------------------------------------------ | |
46 | ||
47 | /* | |
48 | * (non-Javadoc) | |
49 | * @see org.eclipse.core.commands.AbstractHandler#execute(org.eclipse.core.commands.ExecutionEvent) | |
50 | */ | |
51 | @Override | |
52 | public Object execute(ExecutionEvent event) throws ExecutionException { | |
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53 | fLock.lock(); |
54 | try { | |
55 | fNode.refresh(); | |
56 | } finally { | |
57 | fLock.unlock(); | |
58 | } | |
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59 | return null; |
60 | } | |
61 | ||
62 | /* | |
63 | * (non-Javadoc) | |
64 | * @see org.eclipse.core.commands.AbstractHandler#isEnabled() | |
65 | */ | |
66 | @Override | |
67 | public boolean isEnabled() { | |
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68 | |
69 | // Get workbench page for the Control View | |
70 | IWorkbenchPage page = getWorkbenchPage(); | |
71 | if (page == null) { | |
72 | return false; | |
73 | } | |
74 | ||
c56972bb | 75 | TargetNodeComponent node = null; |
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76 | // Check if one or more session are selected |
77 | ISelection selection = page.getSelection(ControlView.ID); | |
78 | if (selection instanceof StructuredSelection) { | |
cfdb727a | 79 | |
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80 | StructuredSelection structered = ((StructuredSelection) selection); |
81 | for (Iterator<?> iterator = structered.iterator(); iterator.hasNext();) { | |
cfdb727a | 82 | Object element = iterator.next(); |
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83 | if (element instanceof TraceControlComponent) { |
84 | TraceControlComponent component = (TraceControlComponent) element; | |
85 | boolean isConnected = component.getTargetNodeState() == TargetNodeState.CONNECTED; | |
86 | if (isConnected) { | |
87 | while ((component != null) && component.getClass() != TargetNodeComponent.class) { | |
88 | component = (TraceControlComponent) component.getParent(); | |
89 | } | |
90 | if (component != null) { | |
c56972bb | 91 | node = (TargetNodeComponent) component; |
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92 | } |
93 | } | |
94 | } | |
95 | } | |
96 | } | |
cfdb727a | 97 | |
c56972bb | 98 | boolean isEnabled = node != null; |
cfdb727a | 99 | |
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100 | fLock.lock(); |
101 | try { | |
102 | fNode = null; | |
103 | if (isEnabled) { | |
104 | fNode = node; | |
105 | } | |
106 | } finally { | |
107 | fLock.unlock(); | |
108 | } | |
cfdb727a | 109 | |
c56972bb | 110 | return isEnabled; |
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111 | } |
112 | } |