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.linuxtools.tmf.core.signal.TmfTraceSelectedSignal;
  16 import org.eclipse.linuxtools.tmf.core.trace.ITmfTrace;
  17 import org.eclipse.linuxtools.tmf.ui.viewers.xycharts.TmfXYChartViewer;
  18 import org.eclipse.linuxtools.tmf.ui.views.TmfView;
  19 import org.eclipse.swt.SWT;
  20 import org.eclipse.swt.custom.SashForm;
  21 import org.eclipse.swt.layout.FillLayout;
  22 import org.eclipse.swt.widgets.Composite;
  23
  24 /**
  25  * CPU usage view. It contains 2 viewers: one tree viewer showing all the
  26  * threads who were on the CPU in the time range, and one XY chart viewer
  27  * plotting the total time spent on CPU and the time of the threads selected in
  28  * the tree viewer.
  29  *
  30  * @author Geneviève Bastien
  31  */
  32 public class CpuUsageView extends TmfView {
  33
  34     /** ID string */
  35     public static final String ID = "org.eclipse.linuxtools.lttng2.kernel.ui.views.cpuusage"; //$NON-NLS-1$
  36
  37     private CpuUsageComposite fTreeViewer = null;
  38     private TmfXYChartViewer fXYViewer = null;
  39
  40     /**
  41      * Constructor
  42      */
  43     public CpuUsageView() {
  44         super(Messages.CpuUsageView_Title);
  45     }
  46
  47     @Override
  48     public void createPartControl(Composite parent) {
  49
  50         final SashForm sash = new SashForm(parent, SWT.NONE);
  51
  52         fTreeViewer = new CpuUsageComposite(sash);
  53
  54         /* Build the XY chart part of the view */
  55         fXYViewer = new CpuUsageXYViewer(sash, fTreeViewer);
  56
  57         sash.setLayout(new FillLayout());
  58
  59         /* Initialize the viewers with the currently selected trace */
  60         ITmfTrace trace = getActiveTrace();
  61         if (trace != null) {
  62             TmfTraceSelectedSignal signal = new TmfTraceSelectedSignal(this, trace);
  63             fTreeViewer.traceSelected(signal);
  64             fXYViewer.traceSelected(signal);
  65         }
  66
  67     }
  68
  69     @Override
  70     public void setFocus() {
  71     }
  72
  73     @Override
  74     public void dispose() {
  75         super.dispose();
  76         if (fTreeViewer != null) {
  77             fTreeViewer.dispose();
  78         }
  79         if (fXYViewer != null) {
  80             fXYViewer.dispose();
  81         }
  82     }
  83
  84 }