org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/latency/listeners/AbstractMouseListener.java

   1 /*******************************************************************************
   2  * Copyright (c) 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  *   Bernd Hufmann - Initial API and implementation
  11  *******************************************************************************/
  12 package org.eclipse.linuxtools.lttng.ui.views.latency.listeners;
  13
  14 import org.eclipse.swt.events.MouseEvent;
  15 import org.eclipse.swt.events.MouseListener;
  16
  17 /**
  18  * <b><u>AbstractMouseListener</u></b>
  19  * <p>
  20  */
  21 public abstract class AbstractMouseListener implements MouseListener {
  22
  23     // ------------------------------------------------------------------------
  24     // Attributes
  25     // ------------------------------------------------------------------------
  26
  27     /**
  28      * Mouse x-coordinate.
  29      */
  30     protected int fMouseX;
  31
  32     /**
  33      * Mouse y-coordinate.
  34      */
  35     protected int fMouseY;
  36
  37     // ------------------------------------------------------------------------
  38     // Constructors
  39     // ------------------------------------------------------------------------
  40
  41     // ------------------------------------------------------------------------
  42     // Accessors
  43     // ------------------------------------------------------------------------
  44
  45     // ------------------------------------------------------------------------
  46     // Operations
  47     // ------------------------------------------------------------------------
  48
  49     /*
  50      * (non-Javadoc)
  51      * @see org.eclipse.swt.events.MouseListener#mouseDoubleClick(org.eclipse.swt.events.MouseEvent)
  52      */
  53     @Override
  54     public void mouseDoubleClick(MouseEvent e) {
  55     }
  56
  57     /*
  58      * (non-Javadoc)
  59      * @see org.eclipse.swt.events.MouseListener#mouseDown(org.eclipse.swt.events.MouseEvent)
  60      */
  61     @Override
  62     public void mouseDown(MouseEvent e) {
  63         fMouseX = e.x;
  64         fMouseY = e.y;
  65         display();
  66     }
  67
  68     /*
  69      * (non-Javadoc)
  70      * @see org.eclipse.swt.events.MouseListener#mouseUp(org.eclipse.swt.events.MouseEvent)
  71      */
  72     @Override
  73     public void mouseUp(MouseEvent e) {
  74     }
  75
  76     /**
  77      * Callback to display information at the current x-y position
  78      */
  79     protected abstract void display();
  80 }