org.eclipse.linuxtools.lttng2.kernel.ui/src/org/eclipse/linuxtools/internal/lttng2/kernel/ui/views/cpuusage/CpuUsageView.java

   1 /*******************************************************************************
   2  * Copyright (c) 2014 École Polytechnique de Montréal
   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.linuxtools.internal.lttng2.kernel.ui.views.cpuusage;
  14
  15 import org.eclipse.jface.viewers.ISelection;
  16 import org.eclipse.jface.viewers.ISelectionChangedListener;
  17 import org.eclipse.jface.viewers.IStructuredSelection;
  18 import org.eclipse.jface.viewers.SelectionChangedEvent;
  19 import org.eclipse.linuxtools.tmf.core.signal.TmfTraceSelectedSignal;
  20 import org.eclipse.linuxtools.tmf.core.trace.ITmfTrace;
  21 import org.eclipse.linuxtools.tmf.ui.views.TmfView;
  22 import org.eclipse.swt.SWT;
  23 import org.eclipse.swt.custom.SashForm;
  24 import org.eclipse.swt.layout.FillLayout;
  25 import org.eclipse.swt.widgets.Composite;
  26
  27 /**
  28  * CPU usage view. It contains 2 viewers: one tree viewer showing all the
  29  * threads who were on the CPU in the time range, and one XY chart viewer
  30  * plotting the total time spent on CPU and the time of the threads selected in
  31  * the tree viewer.
  32  *
  33  * @author Geneviève Bastien
  34  */
  35 public class CpuUsageView extends TmfView {
  36
  37     /** ID string */
  38     public static final String ID = "org.eclipse.linuxtools.lttng2.kernel.ui.views.cpuusage"; //$NON-NLS-1$
  39
  40     private CpuUsageComposite fTreeViewer = null;
  41     private CpuUsageXYViewer fXYViewer = null;
  42
  43     /**
  44      * Constructor
  45      */
  46     public CpuUsageView() {
  47         super(Messages.CpuUsageView_Title);
  48     }
  49
  50     @Override
  51     public void createPartControl(Composite parent) {
  52
  53         final SashForm sash = new SashForm(parent, SWT.NONE);
  54
  55         fTreeViewer = new CpuUsageComposite(sash);
  56
  57         /* Build the XY chart part of the view */
  58         fXYViewer = new CpuUsageXYViewer(sash);
  59
  60         /* Add selection listener to tree viewer */
  61         fTreeViewer.addSelectionChangeListener(new ISelectionChangedListener() {
  62             @Override
  63             public void selectionChanged(SelectionChangedEvent event) {
  64                 ISelection selection = event.getSelection();
  65                 if (selection instanceof IStructuredSelection) {
  66                     Object structSelection = ((IStructuredSelection) selection).getFirstElement();
  67                     if (structSelection instanceof CpuUsageEntry) {
  68                         CpuUsageEntry entry = (CpuUsageEntry) structSelection;
  69                         fTreeViewer.setSelectedThread(entry.getTid());
  70                         fXYViewer.setSelectedThread(Long.valueOf(entry.getTid()));
  71                     }
  72                 }
  73             }
  74         });
  75
  76         sash.setLayout(new FillLayout());
  77
  78         /* Initialize the viewers with the currently selected trace */
  79         ITmfTrace trace = getActiveTrace();
  80         if (trace != null) {
  81             TmfTraceSelectedSignal signal = new TmfTraceSelectedSignal(this, trace);
  82             fTreeViewer.traceSelected(signal);
  83             fXYViewer.traceSelected(signal);
  84         }
  85
  86     }
  87
  88     @Override
  89     public void setFocus() {
  90     }
  91
  92     @Override
  93     public void dispose() {
  94         super.dispose();
  95         if (fTreeViewer != null) {
  96             fTreeViewer.dispose();
  97         }
  98         if (fXYViewer != null) {
  99             fXYViewer.dispose();
 100         }
 101     }
 102
 103 }