analysis/org.eclipse.tracecompass.analysis.os.linux.ui/src/org/eclipse/tracecompass/analysis/os/linux/ui/views/cpuusage/CpuUsageView.java

   1 /*******************************************************************************
   2  * Copyright (c) 2014, 2016 École Polytechnique de Montréal and others
   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  *   Geneviève Bastien - Initial API and implementation
  11  *******************************************************************************/
  12
  13 package org.eclipse.tracecompass.analysis.os.linux.ui.views.cpuusage;
  14
  15 import org.eclipse.jdt.annotation.Nullable;
  16 import org.eclipse.jface.viewers.ISelection;
  17 import org.eclipse.jface.viewers.ISelectionChangedListener;
  18 import org.eclipse.jface.viewers.IStructuredSelection;
  19 import org.eclipse.jface.viewers.SelectionChangedEvent;
  20 import org.eclipse.swt.events.ControlAdapter;
  21 import org.eclipse.swt.events.ControlEvent;
  22 import org.eclipse.swt.widgets.Composite;
  23 import org.eclipse.tracecompass.tmf.core.signal.TmfTraceSelectedSignal;
  24 import org.eclipse.tracecompass.tmf.core.trace.ITmfTrace;
  25 import org.eclipse.tracecompass.tmf.core.trace.TmfTraceManager;
  26 import org.eclipse.tracecompass.tmf.ui.viewers.TmfViewer;
  27 import org.eclipse.tracecompass.tmf.ui.viewers.xycharts.TmfXYChartViewer;
  28 import org.eclipse.tracecompass.tmf.ui.views.TmfChartView;
  29
  30 /**
  31  * CPU usage view. It contains 2 viewers: one tree viewer showing all the
  32  * threads who were on the CPU in the time range, and one XY chart viewer
  33  * plotting the total time spent on CPU and the time of the threads selected in
  34  * the tree viewer.
  35  *
  36  * @author Geneviève Bastien
  37  */
  38 public class CpuUsageView extends TmfChartView {
  39
  40     /** ID string */
  41     public static final String ID = "org.eclipse.tracecompass.analysis.os.linux.views.cpuusage"; //$NON-NLS-1$
  42
  43     private @Nullable CpuUsageComposite fTreeViewer = null;
  44     private @Nullable CpuUsageXYViewer fXYViewer = null;
  45
  46     /**
  47      * Constructor
  48      */
  49     public CpuUsageView() {
  50         super(Messages.CpuUsageView_Title);
  51     }
  52
  53     @Override
  54     public void createPartControl(Composite parent) {
  55         super.createPartControl(parent);
  56
  57         /* Initialize the viewers with the currently selected trace */
  58         ITmfTrace trace = TmfTraceManager.getInstance().getActiveTrace();
  59         if (trace != null) {
  60             TmfTraceSelectedSignal signal = new TmfTraceSelectedSignal(this, trace);
  61             if (fTreeViewer != null) {
  62                 fTreeViewer.traceSelected(signal);
  63             }
  64             if (fXYViewer != null) {
  65                 fXYViewer.traceSelected(signal);
  66             }
  67         }
  68     }
  69
  70     @Override
  71     protected TmfXYChartViewer createChartViewer(Composite parent) {
  72         CpuUsageXYViewer viewer = new CpuUsageXYViewer(parent);
  73         viewer.setSendTimeAlignSignals(true);
  74         fXYViewer = viewer;
  75         return viewer;
  76     }
  77
  78     @Override
  79     public TmfViewer createLeftChildViewer(Composite parent) {
  80         final CpuUsageComposite viewer = new CpuUsageComposite(parent);
  81
  82         /* Add selection listener to tree viewer */
  83         viewer.addSelectionChangeListener(new ISelectionChangedListener() {
  84             @Override
  85             public void selectionChanged(SelectionChangedEvent event) {
  86                 ISelection selection = event.getSelection();
  87                 if (selection instanceof IStructuredSelection) {
  88                     Object structSelection = ((IStructuredSelection) selection).getFirstElement();
  89                     if (structSelection instanceof CpuUsageEntry) {
  90                         CpuUsageEntry entry = (CpuUsageEntry) structSelection;
  91                         if (fTreeViewer != null) {
  92                             fTreeViewer.setSelectedThread(entry.getTid());
  93                         }
  94                         if (fXYViewer != null) {
  95                             fXYViewer.setSelectedThread(Long.valueOf(entry.getTid()));
  96                         }
  97                     }
  98                 }
  99             }
 100         });
 101
 102         viewer.getControl().addControlListener(new ControlAdapter() {
 103             @Override
 104             public void controlResized(ControlEvent e) {
 105                 super.controlResized(e);
 106             }
 107         });
 108
 109         fTreeViewer = viewer;
 110         return fTreeViewer;
 111     }
 112
 113     @Override
 114     public void setFocus() {
 115         if (fXYViewer != null) {
 116             fXYViewer.getControl().setFocus();
 117         }
 118     }
 119
 120 }