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1 | /******************************************************************************* |
2 | * Copyright (c) 2015 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 | * France Lapointe Nguyen - Initial API and implementation | |
11 | *******************************************************************************/ | |
12 | ||
13 | package org.eclipse.tracecompass.internal.analysis.os.linux.ui.views.latency; | |
14 | ||
15 | import java.util.Arrays; | |
16 | import java.util.Comparator; | |
17 | ||
18 | import org.eclipse.jdt.annotation.Nullable; | |
19 | import org.eclipse.jface.viewers.TableViewer; | |
20 | import org.eclipse.jface.viewers.Viewer; | |
21 | import org.eclipse.tracecompass.segmentstore.core.ISegment; | |
22 | import org.eclipse.tracecompass.segmentstore.core.ISegmentStore; | |
23 | import org.eclipse.tracecompass.tmf.ui.viewers.table.ISortingLazyContentProvider; | |
24 | ||
25 | import com.google.common.collect.Iterables; | |
26 | ||
27 | /** | |
28 | * Content provider for the latency table viewers. | |
29 | * | |
30 | * @author France Lapointe Nguyen | |
31 | */ | |
32 | public class LatencyContentProvider implements ISortingLazyContentProvider { | |
33 | ||
34 | /** | |
35 | * Array of all the segments in the segment store of the current trace | |
36 | */ | |
37 | private @Nullable ISegment[] fSegmentArray = null; | |
38 | ||
39 | /** | |
40 | * Table viewer of the latency table viewer | |
41 | */ | |
42 | private @Nullable TableViewer fTableViewer = null; | |
43 | ||
44 | /** | |
45 | * Segment comparator | |
46 | */ | |
47 | private @Nullable Comparator<ISegment> fComparator = null; | |
48 | ||
49 | @Override | |
50 | public void updateElement(int index) { | |
51 | final TableViewer tableViewer = fTableViewer; | |
52 | final ISegment[] segmentArray = fSegmentArray; | |
53 | if (tableViewer != null && segmentArray != null) { | |
54 | tableViewer.replace(segmentArray[index], index); | |
55 | } | |
56 | } | |
57 | ||
58 | @Override | |
59 | public void dispose() { | |
60 | fSegmentArray = null; | |
61 | fTableViewer = null; | |
62 | fComparator = null; | |
63 | } | |
64 | ||
65 | @Override | |
66 | public void inputChanged(@Nullable Viewer viewer, @Nullable Object oldInput, @Nullable Object newInput) { | |
67 | fTableViewer = (TableViewer) viewer; | |
68 | if (newInput instanceof ISegmentStore<?>) { | |
69 | ISegmentStore<?> segmentStore = (ISegmentStore<?>) newInput; | |
70 | fSegmentArray = Iterables.toArray(segmentStore, ISegment.class); | |
71 | if (fComparator != null) { | |
72 | Arrays.sort(fSegmentArray, fComparator); | |
73 | } | |
74 | } else { | |
75 | fSegmentArray = null; | |
76 | } | |
77 | } | |
78 | ||
79 | @Override | |
80 | public void setSortOrder(@Nullable Comparator<?> comparator) { | |
81 | if (comparator == null) { | |
82 | return; | |
83 | } | |
84 | if (fSegmentArray == null) { | |
85 | return; | |
86 | } | |
87 | final TableViewer tableViewer = fTableViewer; | |
88 | if (tableViewer == null) { | |
89 | return; | |
90 | } | |
91 | fComparator = (Comparator<ISegment>) comparator; | |
92 | Arrays.sort(fSegmentArray, fComparator); | |
93 | tableViewer.refresh(); | |
94 | } | |
95 | ||
96 | /** | |
97 | * Get the segment count | |
98 | * | |
99 | * @return the segment count | |
100 | */ | |
101 | public int getSegmentCount() { | |
102 | ISegment[] segmentArray = fSegmentArray; | |
103 | return (segmentArray == null ? 0 : segmentArray.length); | |
104 | } | |
105 | } |