bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/diagramEditor/handlers/DefaultElementDoubleClickHandler.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.modeling.ui.diagramEditor.handlers;\r
  13 \r
  14 import java.util.Set;\r
  15 \r
  16 import org.eclipse.core.commands.ExecutionException;\r
  17 import org.eclipse.jface.action.IAction;\r
  18 import org.eclipse.swt.widgets.Display;\r
  19 import org.eclipse.ui.IWorkbenchPage;\r
  20 import org.eclipse.ui.PartInitException;\r
  21 import org.eclipse.ui.PlatformUI;\r
  22 import org.simantics.Simantics;\r
  23 import org.simantics.browsing.ui.common.ErrorLogger;\r
  24 import org.simantics.db.ReadGraph;\r
  25 import org.simantics.db.Resource;\r
  26 import org.simantics.db.common.request.UniqueRead;\r
  27 import org.simantics.db.exception.DatabaseException;\r
  28 import org.simantics.g2d.canvas.impl.AbstractCanvasParticipant;\r
  29 import org.simantics.g2d.canvas.impl.DependencyReflection.Dependency;\r
  30 import org.simantics.g2d.diagram.participant.Selection;\r
  31 import org.simantics.g2d.element.ElementHints;\r
  32 import org.simantics.g2d.element.IElement;\r
  33 import org.simantics.scenegraph.g2d.events.EventHandlerReflection.EventHandler;\r
  34 import org.simantics.scenegraph.g2d.events.MouseEvent.MouseDoubleClickedEvent;\r
  35 import org.simantics.ui.workbench.action.ChooseActionRequest;\r
  36 import org.simantics.utils.ui.ExceptionUtils;\r
  37 import org.simantics.utils.ui.action.IPriorityAction;\r
  38 import org.simantics.utils.ui.workbench.WorkbenchUtils;\r
  39 \r
  40 /**\r
  41  * Really simple support for activating property view from diagram when a single\r
  42  * element is double clicked.\r
  43  * \r
  44  * @author Tuukka Lehtonen\r
  45  */\r
  46 public class DefaultElementDoubleClickHandler extends AbstractCanvasParticipant {\r
  47 \r
  48     @Dependency\r
  49     Selection selection;\r
  50 \r
  51     public boolean accept(IElement element) {\r
  52         return true;\r
  53     }\r
  54     \r
  55     @EventHandler(priority = -10)\r
  56     public boolean handleDoubleClick(MouseDoubleClickedEvent me) {\r
  57         \r
  58         Set<IElement> sel = selection.getSelection(0);\r
  59         if (sel.size() == 1) {\r
  60                 \r
  61             IElement e = sel.iterator().next();\r
  62             if(!accept(e)) return false;\r
  63             \r
  64             final Object data = e.getHint(ElementHints.KEY_OBJECT);\r
  65 \r
  66             final Display display = PlatformUI.getWorkbench().getDisplay();\r
  67             if (display == null)\r
  68                 return false;\r
  69 \r
  70             // See if there's any highest-priority editor adapter that we could use for the object:\r
  71             try {\r
  72                 Boolean consumed = Simantics.getSession().sync(new UniqueRead<Boolean>() {\r
  73                     @Override\r
  74                     public Boolean perform(ReadGraph graph) throws DatabaseException {\r
  75                         IPriorityAction[] actions = ChooseActionRequest.findActions(graph, null, data, "", false, false);\r
  76                         IPriorityAction priorityAction = (IPriorityAction) ChooseActionRequest.chooseAction(null, actions, null, true);\r
  77                         if (priorityAction != null && priorityAction.getPriority() >= 10) {\r
  78                             //System.out.println("HIGH PRIORITY ACTION(" + priorityAction.getPriority() + "): " + priorityAction);\r
  79                             display.asyncExec( actionAsRunnable( priorityAction) );\r
  80                             return true;\r
  81                         } else if (data instanceof Resource) {\r
  82                             PlatformUI.getWorkbench().getDisplay().asyncExec( revealView("org.simantics.browsing.ui.graph.propertyView") );\r
  83                             return true;\r
  84                         }\r
  85                         return false;\r
  86                     }\r
  87                 });\r
  88                 return consumed;\r
  89             } catch (DatabaseException ex) {\r
  90                 ErrorLogger.defaultLogError(ex);\r
  91             }\r
  92         }\r
  93 \r
  94         return false;\r
  95     }\r
  96 \r
  97     public static Runnable revealView(final String viewIdPart) {\r
  98         return new Runnable() {\r
  99             @Override\r
 100             public void run() {\r
 101                 try {\r
 102                     WorkbenchUtils.showView(viewIdPart, IWorkbenchPage.VIEW_VISIBLE);\r
 103                 } catch (PartInitException e) {\r
 104                     ExceptionUtils.logAndShowError(e);\r
 105                 }\r
 106             }\r
 107         };\r
 108     }\r
 109 \r
 110     public static Runnable revealAndShowView(final String viewIdPart) {\r
 111         return new Runnable() {\r
 112             @Override\r
 113             public void run() {\r
 114                 try {\r
 115                     WorkbenchUtils.showView(viewIdPart, IWorkbenchPage.VIEW_VISIBLE);\r
 116 \r
 117                     // Give the post selection listeners time to settle.\r
 118                     PlatformUI.getWorkbench().getDisplay().timerExec( 500, showView(viewIdPart) );\r
 119                 } catch (PartInitException e) {\r
 120                     ExceptionUtils.logAndShowError(e);\r
 121                 }\r
 122             }\r
 123         };\r
 124     }\r
 125 \r
 126     public static Runnable showView(final String viewIdPart) {\r
 127         return new Runnable() {\r
 128             @Override\r
 129             public void run() {\r
 130                 try {\r
 131                     CommandUtil.showView(viewIdPart);\r
 132                 } catch (ExecutionException e) {\r
 133                     ExceptionUtils.logAndShowError(e);\r
 134                 }\r
 135             }\r
 136         };\r
 137     }\r
 138 \r
 139     public static Runnable actionAsRunnable(final IAction action) {\r
 140         return new Runnable() {\r
 141             @Override\r
 142             public void run() {\r
 143                 action.run();\r
 144             }\r
 145         };\r
 146     }\r
 147 \r
 148 }\r