org.eclipse.linuxtools.tmf.ui/src/org/eclipse/linuxtools/tmf/ui/views/uml2sd/handlers/FirstPage.java

   1 /**********************************************************************
   2  * Copyright (c) 2011, 2013 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.tmf.ui.views.uml2sd.handlers;
  13
  14 import org.eclipse.jface.action.Action;
  15 import org.eclipse.linuxtools.internal.tmf.ui.ITmfImageConstants;
  16 import org.eclipse.linuxtools.internal.tmf.ui.Activator;
  17 import org.eclipse.linuxtools.tmf.ui.views.uml2sd.SDView;
  18 import org.eclipse.linuxtools.tmf.ui.views.uml2sd.util.Messages;
  19
  20 /**
  21  * Action class implementation to move the focus to the first page of the whole sequence diagram.
  22  *
  23  * @version 1.0
  24  * @author Bernd Hufmann
  25  */
  26 public class FirstPage extends Action {
  27
  28     // ------------------------------------------------------------------------
  29     // Constants
  30     // ------------------------------------------------------------------------
  31
  32     /**
  33      * The action ID.
  34      */
  35     public static final String ID = "org.eclipse.linuxtools.tmf.ui.views.uml2sd.handlers.firstpage"; //$NON-NLS-1$
  36
  37     // ------------------------------------------------------------------------
  38     // Attributes
  39     // ------------------------------------------------------------------------
  40
  41     /**
  42      * The sequence diagram view reference
  43      */
  44     protected SDView fView = null;
  45
  46     // ------------------------------------------------------------------------
  47     // Constructors
  48     // ------------------------------------------------------------------------
  49
  50     /**
  51      * Default constructor
  52      *
  53      * @param view the view reference
  54      */
  55     public FirstPage(SDView view) {
  56         super();
  57         fView = view;
  58         setText(Messages.SequenceDiagram_FirstPage);
  59         setToolTipText(Messages.SequenceDiagram_GoToFirstPage);
  60         setId(ID);
  61         setImageDescriptor(Activator.getDefault().getImageDescripterFromPath(ITmfImageConstants.IMG_UI_FIRST_PAGE));
  62     }
  63
  64     // ------------------------------------------------------------------------
  65     // Methods
  66     // ------------------------------------------------------------------------
  67
  68     @Override
  69     public void run() {
  70         if ((fView == null) || (fView.getSDWidget()) == null) {
  71             return;
  72         }
  73         if (fView.getSDPagingProvider() != null) {
  74             fView.getSDPagingProvider().firstPage();
  75         }
  76         fView.updateCoolBar();
  77         fView.getSDWidget().redraw();
  78     }
  79 }