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

   1 /**********************************************************************
   2  * Copyright (c) 2005, 2012 IBM Corporation, Ericsson
   3  * All rights reserved.   This program and the accompanying materials
   4  * are made available under the terms of the Eclipse Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/epl-v10.html
   7  *
   8  * Contributors:
   9  *     IBM - Initial API and implementation
  10  *     Bernd Hufmann - Updated for TMF
  11  **********************************************************************/
  12
  13 package org.eclipse.linuxtools.tmf.ui.views.uml2sd.handlers;
  14
  15 import java.util.Iterator;
  16
  17 import org.eclipse.jface.action.Action;
  18 import org.eclipse.jface.viewers.ISelection;
  19 import org.eclipse.jface.viewers.ISelectionProvider;
  20 import org.eclipse.jface.viewers.StructuredSelection;
  21 import org.eclipse.linuxtools.internal.tmf.ui.ITmfImageConstants;
  22 import org.eclipse.linuxtools.internal.tmf.ui.Activator;
  23 import org.eclipse.linuxtools.tmf.ui.views.uml2sd.SDView;
  24 import org.eclipse.linuxtools.tmf.ui.views.uml2sd.SDWidget;
  25 import org.eclipse.linuxtools.tmf.ui.views.uml2sd.core.GraphNode;
  26 import org.eclipse.ui.IViewPart;
  27
  28 /**
  29  * Action class implementation to show end of a graph node.
  30  *
  31  * @version 1.0
  32  * @author sveyrier
  33  */
  34 public class ShowNodeEnd extends Action {
  35
  36     // ------------------------------------------------------------------------
  37     // Attributes
  38     // ------------------------------------------------------------------------
  39     /**
  40      * The sequence diagram view reference
  41      */
  42     protected SDView fView = null;
  43
  44     // ------------------------------------------------------------------------
  45     // Constructors
  46     // ------------------------------------------------------------------------
  47     /**
  48      * Default constructor
  49      */
  50     public ShowNodeEnd() {
  51         this(null);
  52     }
  53
  54     /**
  55      * Constructor
  56      *
  57      * @param view The sequence diagram view reference
  58      */
  59     public ShowNodeEnd(IViewPart view) {
  60         super();
  61         if (view instanceof SDView) {
  62             fView = (SDView)view;
  63         }
  64         setImageDescriptor(Activator.getDefault().getImageDescripterFromPath(ITmfImageConstants.IMG_UI_NODE_END));
  65     }
  66
  67     // ------------------------------------------------------------------------
  68     // Operations
  69     // ------------------------------------------------------------------------
  70     /*
  71      * (non-Javadoc)
  72      * @see org.eclipse.jface.action.Action#run()
  73      */
  74     @Override
  75     @SuppressWarnings("rawtypes")
  76     public void run() {
  77         if (fView == null) {
  78             return;
  79         }
  80
  81         SDWidget sdWidget = fView.getSDWidget();
  82
  83         if (sdWidget == null) {
  84             return;
  85         }
  86
  87         ISelectionProvider selProvider = sdWidget.getSelectionProvider();
  88         ISelection sel = selProvider.getSelection();
  89         Object selectedNode = null;
  90
  91         Iterator it = ((StructuredSelection) sel).iterator();
  92         while (it.hasNext()) {
  93             selectedNode = it.next();
  94         }
  95
  96         if (selectedNode != null) {
  97             GraphNode node = (GraphNode) selectedNode;
  98             if ((node.getX() + node.getWidth()) * sdWidget.getZoomFactor() < sdWidget.getContentsX() + sdWidget.getVisibleWidth() / 2) {
  99                 sdWidget.ensureVisible(Math.round((node.getX() + node.getWidth()) * sdWidget.getZoomFactor()) - sdWidget.getVisibleWidth() / 2, Math.round((node.getY() + node.getHeight()) * sdWidget.getZoomFactor()));
 100             } else {
 101                 sdWidget.ensureVisible(Math.round((node.getX() + node.getWidth()) * sdWidget.getZoomFactor() + sdWidget.getVisibleWidth() / (float) 2), Math.round((node.getY() + node.getHeight()) * sdWidget.getZoomFactor()));
 102             }
 103         }
 104     }
 105
 106     /**
 107      * Sets the active SD view.
 108      *
 109      * @param view The SD view.
 110      */
 111    public void setView(SDView view) {
 112         fView = view;
 113     }
 114 }