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

   1 /**********************************************************************
   2  * Copyright (c) 2005, 2008 IBM Corporation and others.
   3  * Copyright (c) 2011, 2012 Ericsson.
   4  *
   5  * All rights reserved.   This program and the accompanying materials
   6  * are made available under the terms of the Eclipse Public License v1.0
   7  * which accompanies this distribution, and is available at
   8  * http://www.eclipse.org/legal/epl-v10.html
   9  *
  10  * Contributors:
  11  * IBM - Initial API and implementation
  12  * Bernd Hufmann - Updated for TMF
  13  **********************************************************************/
  14 package org.eclipse.linuxtools.tmf.ui.views.uml2sd.handlers;
  15
  16 import org.eclipse.jface.action.Action;
  17 import org.eclipse.linuxtools.internal.tmf.ui.ITmfImageConstants;
  18 import org.eclipse.linuxtools.internal.tmf.ui.TmfUiPlugin;
  19 import org.eclipse.linuxtools.tmf.ui.views.uml2sd.SDView;
  20 import org.eclipse.linuxtools.tmf.ui.views.uml2sd.util.SDMessages;
  21
  22 /**
  23  * Action class implementation to move the focus to the previous page of the whole sequence diagram.
  24  *
  25  * @version 1.0
  26  * @author sveyrier
  27  *
  28  */
  29 public class PrevPage extends Action {
  30
  31     // ------------------------------------------------------------------------
  32     // Constants
  33     // ------------------------------------------------------------------------
  34
  35     /**
  36      * The action ID.
  37      */
  38     public final static String ID = "org.eclipse.linuxtools.tmf.ui.views.uml2sd.handlers.prevpage"; //$NON-NLS-1$
  39
  40     // ------------------------------------------------------------------------
  41     // Attributes
  42     // ------------------------------------------------------------------------
  43
  44     /**
  45      * The sequence diagram view reference.
  46      */
  47     protected SDView fView = null;
  48
  49     // ------------------------------------------------------------------------
  50     // Constructors
  51     // ------------------------------------------------------------------------
  52
  53     /**
  54      * Default constructor
  55      *
  56      * @param view the view reference
  57      */
  58     public PrevPage(SDView view) {
  59         super();
  60         fView = view;
  61         setText(SDMessages._35);
  62         setToolTipText(SDMessages._37);
  63         setId(ID);
  64         setImageDescriptor(TmfUiPlugin.getDefault().getImageDescripterFromPath(ITmfImageConstants.IMG_UI_PREV_PAGE));
  65     }
  66
  67     // ------------------------------------------------------------------------
  68     // Methods
  69     // ------------------------------------------------------------------------
  70     /*
  71      * (non-Javadoc)
  72      * @see org.eclipse.jface.action.Action#run()
  73      */
  74     @Override
  75     public void run() {
  76         if ((fView == null) || (fView.getSDWidget()) == null) {
  77             return;
  78         }
  79         if (fView.getSDPagingProvider() != null) {
  80             fView.getSDPagingProvider().prevPage();
  81         }
  82         fView.updateCoolBar();
  83         fView.getSDWidget().redraw();
  84     }
  85 }