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

   1 /**********************************************************************
   2  * Copyright (c) 2005, 2013 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.viewers.ISelection;
  18 import org.eclipse.jface.viewers.ISelectionProvider;
  19 import org.eclipse.jface.viewers.StructuredSelection;
  20 import org.eclipse.linuxtools.internal.tmf.ui.Activator;
  21 import org.eclipse.linuxtools.internal.tmf.ui.ITmfImageConstants;
  22 import org.eclipse.linuxtools.tmf.ui.views.uml2sd.SDView;
  23 import org.eclipse.linuxtools.tmf.ui.views.uml2sd.SDWidget;
  24 import org.eclipse.linuxtools.tmf.ui.views.uml2sd.core.GraphNode;
  25
  26 /**
  27  * Action class implementation to show end of a graph node.
  28  *
  29  * @version 1.0
  30  * @author sveyrier
  31  */
  32 public class ShowNodeEnd extends BaseSDAction {
  33
  34     // ------------------------------------------------------------------------
  35     // Constructors
  36     // ------------------------------------------------------------------------
  37     /**
  38      * Default constructor
  39      */
  40     public ShowNodeEnd() {
  41         this(null);
  42     }
  43
  44     /**
  45      * Constructor
  46      *
  47      * @param view The sequence diagram view reference
  48      * @since 2.0
  49      */
  50     public ShowNodeEnd(SDView view) {
  51         super(view);
  52         setImageDescriptor(Activator.getDefault().getImageDescripterFromPath(ITmfImageConstants.IMG_UI_NODE_END));
  53     }
  54
  55     // ------------------------------------------------------------------------
  56     // Operations
  57     // ------------------------------------------------------------------------
  58
  59     @Override
  60     @SuppressWarnings("rawtypes")
  61     public void run() {
  62         if (getView() == null) {
  63             return;
  64         }
  65
  66         SDWidget sdWidget = getView().getSDWidget();
  67
  68         if (sdWidget == null) {
  69             return;
  70         }
  71
  72         ISelectionProvider selProvider = sdWidget.getSelectionProvider();
  73         ISelection sel = selProvider.getSelection();
  74         Object selectedNode = null;
  75
  76         Iterator it = ((StructuredSelection) sel).iterator();
  77         while (it.hasNext()) {
  78             selectedNode = it.next();
  79         }
  80
  81         if (selectedNode != null) {
  82             GraphNode node = (GraphNode) selectedNode;
  83             if ((node.getX() + node.getWidth()) * sdWidget.getZoomFactor() < sdWidget.getContentsX() + sdWidget.getVisibleWidth() / 2) {
  84                 sdWidget.ensureVisible(Math.round((node.getX() + node.getWidth()) * sdWidget.getZoomFactor()) - sdWidget.getVisibleWidth() / 2, Math.round((node.getY() + node.getHeight()) * sdWidget.getZoomFactor()));
  85             } else {
  86                 sdWidget.ensureVisible(Math.round((node.getX() + node.getWidth()) * sdWidget.getZoomFactor() + sdWidget.getVisibleWidth() / (float) 2), Math.round((node.getY() + node.getHeight()) * sdWidget.getZoomFactor()));
  87             }
  88         }
  89     }
  90 }