| 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 ShowNodeStart 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 ShowNodeStart() { |
| 51 | this(null); |
| 52 | } |
| 53 | |
| 54 | /** |
| 55 | * Constructor |
| 56 | * |
| 57 | * @param view The sequence diagram view reference |
| 58 | */ |
| 59 | public ShowNodeStart(IViewPart view) { |
| 60 | super(); |
| 61 | if (view instanceof SDView) { |
| 62 | fView = (SDView)view; |
| 63 | } |
| 64 | setImageDescriptor(Activator.getDefault().getImageDescripterFromPath(ITmfImageConstants.IMG_UI_NODE_START)); |
| 65 | } |
| 66 | |
| 67 | // ------------------------------------------------------------------------ |
| 68 | // Methods |
| 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 | Iterator it = ((StructuredSelection) sel).iterator(); |
| 91 | while (it.hasNext()) { |
| 92 | selectedNode = it.next(); |
| 93 | } |
| 94 | if (selectedNode != null) { |
| 95 | GraphNode node = (GraphNode) selectedNode; |
| 96 | if (node.getX() * sdWidget.getZoomFactor() < sdWidget.getContentsX() + sdWidget.getVisibleWidth() / 2) { |
| 97 | sdWidget.ensureVisible(Math.round(node.getX() * sdWidget.getZoomFactor() - sdWidget.getVisibleWidth() / (float) 2), Math.round(node.getY() * sdWidget.getZoomFactor())); |
| 98 | } else { |
| 99 | sdWidget.ensureVisible(Math.round(node.getX() * sdWidget.getZoomFactor() + sdWidget.getVisibleWidth() / (float) 2), Math.round(node.getY() * sdWidget.getZoomFactor())); |
| 100 | } |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | /** |
| 105 | * Sets the active SD view. |
| 106 | * |
| 107 | * @param view The SD view. |
| 108 | */ |
| 109 | public void setView(SDView view) { |
| 110 | fView = view; |
| 111 | } |
| 112 | } |