diagramEditor/handlers/DefaultElementDoubleClickHandler.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management
   3  * in Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.modeling.ui.diagramEditor.handlers;
  13
  14 import java.util.Set;
  15
  16 import org.eclipse.core.commands.ExecutionException;
  17 import org.eclipse.jface.action.IAction;
  18 import org.eclipse.swt.widgets.Display;
  19 import org.eclipse.ui.IWorkbenchPage;
  20 import org.eclipse.ui.PartInitException;
  21 import org.eclipse.ui.PlatformUI;
  22 import org.simantics.Simantics;
  23 import org.simantics.browsing.ui.common.ErrorLogger;
  24 import org.simantics.db.ReadGraph;
  25 import org.simantics.db.Resource;
  26 import org.simantics.db.common.request.UniqueRead;
  27 import org.simantics.db.exception.DatabaseException;
  28 import org.simantics.g2d.canvas.impl.AbstractCanvasParticipant;
  29 import org.simantics.g2d.canvas.impl.DependencyReflection.Dependency;
  30 import org.simantics.g2d.diagram.participant.Selection;
  31 import org.simantics.g2d.element.ElementHints;
  32 import org.simantics.g2d.element.IElement;
  33 import org.simantics.scenegraph.g2d.events.EventHandlerReflection.EventHandler;
  34 import org.simantics.scenegraph.g2d.events.MouseEvent.MouseDoubleClickedEvent;
  35 import org.simantics.ui.workbench.action.ChooseActionRequest;
  36 import org.simantics.utils.ui.ExceptionUtils;
  37 import org.simantics.utils.ui.action.IPriorityAction;
  38 import org.simantics.utils.ui.workbench.WorkbenchUtils;
  39
  40 /**
  41  * Really simple support for activating property view from diagram when a single
  42  * element is double clicked.
  43  *
  44  * @author Tuukka Lehtonen
  45  */
  46 public class DefaultElementDoubleClickHandler extends AbstractCanvasParticipant {
  47
  48     @Dependency
  49     Selection selection;
  50
  51     public boolean accept(IElement element) {
  52         return true;
  53     }
  54
  55     @EventHandler(priority = -10)
  56     public boolean handleDoubleClick(MouseDoubleClickedEvent me) {
  57
  58         Set<IElement> sel = selection.getSelection(0);
  59         if (sel.size() == 1) {
  60
  61             IElement e = sel.iterator().next();
  62             if(!accept(e)) return false;
  63
  64             final Object data = e.getHint(ElementHints.KEY_OBJECT);
  65
  66             final Display display = PlatformUI.getWorkbench().getDisplay();
  67             if (display == null)
  68                 return false;
  69
  70             // See if there's any highest-priority editor adapter that we could use for the object:
  71             try {
  72                 Boolean consumed = Simantics.getSession().sync(new UniqueRead<Boolean>() {
  73                     @Override
  74                     public Boolean perform(ReadGraph graph) throws DatabaseException {
  75                         IPriorityAction[] actions = ChooseActionRequest.findActions(graph, null, data, "", false, false);
  76                         IPriorityAction priorityAction = (IPriorityAction) ChooseActionRequest.chooseAction(null, actions, null, true);
  77                         if (priorityAction != null && priorityAction.getPriority() >= 10) {
  78                             //System.out.println("HIGH PRIORITY ACTION(" + priorityAction.getPriority() + "): " + priorityAction);
  79                             display.asyncExec( actionAsRunnable( priorityAction) );
  80                             return true;
  81                         } else if (data instanceof Resource) {
  82                             PlatformUI.getWorkbench().getDisplay().asyncExec( revealView("org.simantics.browsing.ui.graph.propertyView") );
  83                             return true;
  84                         }
  85                         return false;
  86                     }
  87                 });
  88                 return consumed;
  89             } catch (DatabaseException ex) {
  90                 ErrorLogger.defaultLogError(ex);
  91             }
  92         }
  93
  94         return false;
  95     }
  96
  97     public static Runnable revealView(final String viewIdPart) {
  98         return new Runnable() {
  99             @Override
 100             public void run() {
 101                 try {
 102                     WorkbenchUtils.showView(viewIdPart, IWorkbenchPage.VIEW_VISIBLE);
 103                 } catch (PartInitException e) {
 104                     ExceptionUtils.logAndShowError(e);
 105                 }
 106             }
 107         };
 108     }
 109
 110     public static Runnable revealAndShowView(final String viewIdPart) {
 111         return new Runnable() {
 112             @Override
 113             public void run() {
 114                 try {
 115                     WorkbenchUtils.showView(viewIdPart, IWorkbenchPage.VIEW_VISIBLE);
 116
 117                     // Give the post selection listeners time to settle.
 118                     PlatformUI.getWorkbench().getDisplay().timerExec( 500, showView(viewIdPart) );
 119                 } catch (PartInitException e) {
 120                     ExceptionUtils.logAndShowError(e);
 121                 }
 122             }
 123         };
 124     }
 125
 126     public static Runnable showView(final String viewIdPart) {
 127         return new Runnable() {
 128             @Override
 129             public void run() {
 130                 try {
 131                     CommandUtil.showView(viewIdPart);
 132                 } catch (ExecutionException e) {
 133                     ExceptionUtils.logAndShowError(e);
 134                 }
 135             }
 136         };
 137     }
 138
 139     public static Runnable actionAsRunnable(final IAction action) {
 140         return new Runnable() {
 141             @Override
 142             public void run() {
 143                 action.run();
 144             }
 145         };
 146     }
 147
 148 }