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1 | /******************************************************************************* |
2 | * Copyright (c) 2014 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 | *******************************************************************************/ | |
2bdf0193 | 12 | package org.eclipse.tracecompass.internal.tmf.core.filter; |
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13 | |
14 | import java.util.List; | |
15 | ||
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16 | import org.eclipse.tracecompass.tmf.core.event.ITmfEvent; |
17 | import org.eclipse.tracecompass.tmf.core.event.collapse.ITmfCollapsibleEvent; | |
18 | import org.eclipse.tracecompass.tmf.core.filter.model.ITmfFilterTreeNode; | |
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19 | |
20 | /** | |
21 | * Stateful filter that compares consecutive events for collapsing feature. | |
22 | * | |
23 | * Usage of this class in conjunction with other {@link ITmfFilterTreeNode} | |
24 | * filters is not supported. Will throw {@link UnsupportedOperationException} | |
25 | * in that case. | |
26 | * | |
27 | * @author Bernd Hufmann | |
28 | */ | |
29 | public class TmfCollapseFilter implements ITmfFilterTreeNode { | |
30 | ||
31 | private static final String COLLAPSE_NODE_NAME = "Collapse"; //$NON-NLS-1$ | |
32 | ||
33 | private ITmfCollapsibleEvent fPrevEvent = null; | |
34 | ||
35 | @Override | |
36 | public boolean matches(ITmfEvent event) { | |
37 | ||
38 | if (fPrevEvent != null) { | |
39 | if (event instanceof ITmfCollapsibleEvent) { | |
40 | boolean isCollapsible = fPrevEvent.isCollapsibleWith(event); | |
41 | fPrevEvent = (ITmfCollapsibleEvent) event; | |
42 | if (isCollapsible) { | |
43 | return false; | |
44 | } | |
45 | } else { | |
46 | fPrevEvent = null; | |
47 | } | |
48 | } else { | |
49 | if (event instanceof ITmfCollapsibleEvent) { | |
50 | fPrevEvent = (ITmfCollapsibleEvent) event; | |
51 | } | |
52 | } | |
53 | return true; | |
54 | } | |
55 | ||
56 | @Override | |
57 | public ITmfFilterTreeNode getParent() { | |
58 | return null; | |
59 | } | |
60 | ||
61 | @Override | |
62 | public String getNodeName() { | |
63 | return COLLAPSE_NODE_NAME; | |
64 | } | |
65 | ||
66 | @Override | |
67 | public boolean hasChildren() { | |
68 | return false; | |
69 | } | |
70 | ||
71 | @Override | |
72 | public int getChildrenCount() { | |
73 | return 0; | |
74 | } | |
75 | ||
76 | @Override | |
77 | public ITmfFilterTreeNode[] getChildren() { | |
78 | return new ITmfFilterTreeNode[0]; | |
79 | } | |
80 | ||
81 | @Override | |
82 | public ITmfFilterTreeNode getChild(int index) { | |
83 | throw new UnsupportedOperationException(); | |
84 | } | |
85 | ||
86 | @Override | |
87 | public ITmfFilterTreeNode remove() { | |
88 | throw new UnsupportedOperationException(); | |
89 | } | |
90 | ||
91 | @Override | |
92 | public ITmfFilterTreeNode removeChild(ITmfFilterTreeNode node) { | |
93 | throw new UnsupportedOperationException(); | |
94 | } | |
95 | ||
96 | @Override | |
97 | public int addChild(ITmfFilterTreeNode node) { | |
98 | throw new UnsupportedOperationException(); | |
99 | } | |
100 | ||
101 | @Override | |
102 | public ITmfFilterTreeNode replaceChild(int index, ITmfFilterTreeNode node) { | |
103 | throw new UnsupportedOperationException(); | |
104 | } | |
105 | ||
106 | @Override | |
107 | public void setParent(ITmfFilterTreeNode parent) { | |
108 | } | |
109 | ||
110 | @Override | |
111 | public List<String> getValidChildren() { | |
112 | throw new UnsupportedOperationException(); | |
113 | } | |
114 | ||
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115 | @Override |
116 | public String toString(boolean explicit) { | |
117 | return COLLAPSE_NODE_NAME + " [" + fPrevEvent + ']'; //$NON-NLS-1$ | |
118 | } | |
119 | ||
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120 | @Override |
121 | public ITmfFilterTreeNode clone() { | |
122 | return new TmfCollapseFilter(); | |
123 | } | |
124 | } |