org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/internal/lttng/ui/views/latency/GraphViewer.java

   1 /*******************************************************************************
   2  * Copyright (c) 2010, 2011 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  *   Philippe Sawicki (INF4990.A2010@gmail.com)   - Initial API and implementation
  11  *   Mathieu Denis    (mathieu.denis55@gmail.com) - Refactored code
  12  *   Bernd Hufmann - Adapted to new model-view-controller design
  13  *******************************************************************************/
  14 package org.eclipse.linuxtools.internal.lttng.ui.views.latency;
  15
  16 import org.eclipse.linuxtools.internal.lttng.ui.views.latency.listeners.GraphMouseListener;
  17 import org.eclipse.linuxtools.internal.lttng.ui.views.latency.listeners.GraphPaintListener;
  18 import org.eclipse.linuxtools.internal.lttng.ui.views.latency.listeners.TimePointerListener;
  19 import org.eclipse.linuxtools.internal.lttng.ui.views.latency.model.IGraphDataModel;
  20 import org.eclipse.linuxtools.internal.lttng.ui.views.latency.model.IGraphModelListener;
  21 import org.eclipse.linuxtools.internal.lttng.ui.views.latency.model.LatencyGraphModel;
  22 import org.eclipse.swt.widgets.Composite;
  23
  24 /**
  25  * <b><u>GraphViewer</u></b>
  26  * <p>
  27  * Graph viewer.
  28  *
  29  * @author Philippe Sawicki
  30  */
  31 public class GraphViewer extends AbstractViewer implements IGraphModelListener {
  32
  33     // ------------------------------------------------------------------------
  34     // Attributes
  35     // ------------------------------------------------------------------------
  36
  37     /**
  38      * Latency graph model
  39      */
  40     private LatencyGraphModel fModel;
  41
  42     // ------------------------------------------------------------------------
  43     // Constructors
  44     // ------------------------------------------------------------------------
  45
  46         /**
  47          * Constructor.
  48          * @param parent The parent composite node.
  49          * @param style The SWT style to use to render the view.
  50          */
  51         public GraphViewer(Composite parent, int style) {
  52                 super(parent, style);
  53
  54                 // Register the paint listener
  55                 fPaintListener = new GraphPaintListener(this);
  56                 addPaintListener(fPaintListener);
  57
  58                 // Register the mouse track listener
  59                 fMouseTraceListener = new TimePointerListener(this, (GraphPaintListener)fPaintListener);
  60                 addMouseTrackListener(fMouseTraceListener);
  61
  62                 // Register mouse listener
  63                 fMouseListener = new GraphMouseListener(this, (GraphPaintListener)fPaintListener);
  64                 addMouseListener(fMouseListener);
  65
  66                 fModel = new LatencyGraphModel();
  67         fModel.addGraphModelListener(this);
  68         }
  69
  70     // ------------------------------------------------------------------------
  71     // Operations
  72     // ------------------------------------------------------------------------
  73
  74         /*
  75          * (non-Javadoc)
  76          * @see org.eclipse.linuxtools.lttng.ui.views.latency.AbstractViewer#dispose()
  77          */
  78         @Override
  79         public void dispose() {
  80             fModel.removeGraphModelListener(this);
  81             fPaintListener.dispose();
  82             super.dispose();
  83         }
  84
  85         /*
  86          * (non-Javadoc)
  87          * @see org.eclipse.linuxtools.lttng.ui.views.latency.AbstractViewer#clear()
  88          */
  89         @Override
  90         public void clear() {
  91                 fPaintListener.clear();
  92         }
  93
  94         /*
  95          * (non-Javadoc)
  96          * @see org.eclipse.linuxtools.lttng.ui.views.latency.AbstractViewer#clearBackground()
  97          */
  98         @Override
  99         public void clearBackground() {
 100                 fPaintListener.clear();
 101         }
 102
 103     /*
 104      * (non-Javadoc)
 105      * @see org.eclipse.linuxtools.lttng.ui.views.latency.AbstractViewer#increaseBarWidth()
 106      */
 107     @Override
 108     public void increaseBarWidth() {
 109         fPaintListener.increaseBarWitdh();
 110         graphModelUpdated();
 111     }
 112
 113     /*
 114      * (non-Javadoc)
 115      * @see org.eclipse.linuxtools.lttng.ui.views.latency.AbstractViewer#decreaseBarWidth()
 116      */
 117     @Override
 118     public void decreaseBarWidth() {
 119         fPaintListener.decreaseBarWitdh();
 120         graphModelUpdated();
 121     }
 122
 123     /*
 124      * (non-Javadoc)
 125      * @see org.eclipse.linuxtools.lttng.ui.views.latency.AbstractViewer#getModel()
 126      */
 127     @Override
 128     public IGraphDataModel getModel() {
 129         return fModel;
 130     }
 131
 132     /*
 133      * (non-Javadoc)
 134      * @see org.eclipse.linuxtools.lttng.ui.views.latency.model.IGraphModelListener#graphModelUpdated()
 135      */
 136     @Override
 137     public void graphModelUpdated() {
 138         if (!isDisposed() && getDisplay() != null) {
 139             getDisplay().asyncExec(new Runnable() {
 140                 @Override
 141                 public void run() {
 142                     if (!isDisposed()) {
 143                         redraw();
 144                     }
 145                 }
 146             });
 147         }
 148     }
 149
 150     /*
 151      * (non-Javadoc)
 152      * @see org.eclipse.linuxtools.lttng.ui.views.latency.model.IGraphModelListener#currentEventUpdated()
 153      */
 154     @Override
 155     public void currentEventUpdated(long currentEventTime) {
 156         graphModelUpdated();
 157     }
 158 }