bundles/org.simantics.diagram/src/org/simantics/diagram/ui/SWTPopupMenuParticipantAwt.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
   3  * in Industry THTH ry.\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.diagram.ui;\r
  13 \r
  14 import java.awt.geom.Point2D;\r
  15 \r
  16 import org.eclipse.swt.SWT;\r
  17 import org.eclipse.swt.events.MenuEvent;\r
  18 import org.eclipse.swt.graphics.Point;\r
  19 import org.eclipse.swt.widgets.Control;\r
  20 import org.eclipse.swt.widgets.Display;\r
  21 import org.eclipse.swt.widgets.Menu;\r
  22 import org.eclipse.swt.widgets.Shell;\r
  23 import org.eclipse.ui.IWorkbenchPartSite;\r
  24 import org.simantics.g2d.diagram.DiagramHints;\r
  25 \r
  26 /**\r
  27  * This is a SWTPopupMenu implementation with workaround for SWT popup menus that do not work when overlaid top of AWT widgets in Linux/GTK \r
  28  * \r
  29  * @see https://bugs.eclipse.org/bugs/show_bug.cgi?id=392101\r
  30  * \r
  31  * \r
  32  * @author Marko Luukkainen\r
  33  *\r
  34  */\r
  35 public class SWTPopupMenuParticipantAwt extends SWTPopupMenuParticipant {\r
  36 \r
  37         Shell shell;\r
  38         Menu menu;\r
  39         \r
  40     public SWTPopupMenuParticipantAwt(IWorkbenchPartSite site, Control control, Display display, String menuId) {\r
  41                 super(site, control, display, menuId);\r
  42         }\r
  43     \r
  44     @Override\r
  45     protected void runDispose() {\r
  46         if (shell != null) {\r
  47                 shell.dispose();\r
  48                 shell = null;\r
  49         }\r
  50                 \r
  51         super.runDispose();\r
  52     }\r
  53     \r
  54 \r
  55     @Override\r
  56     protected void createControl() {\r
  57         if(shell == null) {\r
  58             shell = new Shell(control.getShell(),SWT.NO_TRIM|SWT.NO_FOCUS|SWT.ON_TOP);\r
  59             shell.setSize(4, 4);\r
  60             shell.setVisible(false);\r
  61         }\r
  62         menuManager = createPopupMenu();\r
  63         if (menuManager != null) {\r
  64                 menu = menuManager.createContextMenu(shell);\r
  65             menu.addMenuListener(menuListener);\r
  66             shell.setMenu(menu);\r
  67             if (site != null) {\r
  68                 site.registerContextMenu(menuManager.getId(), menuManager, wbsp);\r
  69             }\r
  70         }\r
  71     }\r
  72     \r
  73     @Override\r
  74     protected void menuHidden(MenuEvent e) {\r
  75         if (shell != null)\r
  76                 shell.setVisible(false);\r
  77         super.menuHidden(e);\r
  78     }\r
  79     \r
  80         /**\r
  81      * @param newValue\r
  82      * @thread canvas-thread (AWT)\r
  83      */\r
  84     protected void showPopup(Point2D newValue) {\r
  85         final Point2D cp = (Point2D) newValue;\r
  86         setHint(DiagramHints.POPUP_MENU_CONTROL_POSITION, cp);\r
  87         setHint(DiagramHints.POPUP_MENU_CANVAS_POSITION, trUtil.controlToCanvas(cp, null));\r
  88         display.asyncExec(new Runnable() {\r
  89             @Override\r
  90             public void run() {\r
  91                  \r
  92                 if (control == null || control.isDisposed())\r
  93                     return;\r
  94                 final Point p = control.toDisplay((int) cp.getX(), (int) cp.getY());\r
  95                                           \r
  96                     shell.getDisplay().asyncExec(new Runnable() {\r
  97                       public void run() {\r
  98                                 shell.setLocation(p.x-1, p.y-1);\r
  99                                 shell.setActive();\r
 100                                 shell.setVisible(true);\r
 101                       }});\r
 102                     shell.getDisplay().asyncExec(new Runnable() {\r
 103                       public void run() {\r
 104                         menuManager.getMenu().setLocation(p);\r
 105                     menuManager.getMenu().setVisible(true);\r
 106                       }});\r
 107 \r
 108             }\r
 109         });\r
 110     }\r
 111 \r
 112 }\r