bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/modelBrowser/handlers/StandardCutHandler.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007 VTT Technical Research Centre of Finland and others.
   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  *     VTT Technical Research Centre of Finland - initial API and implementation
  10  *******************************************************************************/
  11 package org.simantics.modeling.ui.modelBrowser.handlers;
  12
  13
  14 import java.util.HashSet;
  15 import java.util.Set;
  16
  17 import org.eclipse.core.commands.AbstractHandler;
  18 import org.eclipse.core.commands.ExecutionEvent;
  19 import org.eclipse.core.commands.ExecutionException;
  20 import org.eclipse.jface.action.IStatusLineManager;
  21 import org.eclipse.jface.viewers.ISelection;
  22 import org.eclipse.ui.PlatformUI;
  23 import org.eclipse.ui.handlers.HandlerUtil;
  24 import org.simantics.Simantics;
  25 import org.simantics.db.ReadGraph;
  26 import org.simantics.db.Resource;
  27 import org.simantics.db.common.request.ReadRequest;
  28 import org.simantics.db.common.utils.Logger;
  29 import org.simantics.db.exception.DatabaseException;
  30 import org.simantics.db.layer0.adapter.CopyHandler;
  31 import org.simantics.db.layer0.util.SimanticsClipboardImpl;
  32 import org.simantics.ui.utils.ResourceAdaptionUtils;
  33 import org.simantics.utils.ui.workbench.WorkbenchUtils;
  34
  35 public class StandardCutHandler extends AbstractHandler {
  36
  37     private static IStatusLineManager status;
  38
  39     @Override
  40     public Object execute(ExecutionEvent event) throws ExecutionException {
  41         status = WorkbenchUtils.getStatusLine( HandlerUtil.getActiveSite(event) );
  42         ISelection selection = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getSelectionService().getSelection();
  43         final Resource[] rs = ResourceAdaptionUtils.toResources( selection );
  44         if (rs == null) {
  45             setStatus("Nothing to cut.");
  46            return null;
  47         }
  48
  49         try {
  50             final SimanticsClipboardImpl builder = new SimanticsClipboardImpl();
  51
  52             Simantics.getSession().syncRequest(new ReadRequest() {
  53                 @Override
  54                 public void run(ReadGraph graph) throws DatabaseException {
  55                     Set<Resource> unique = new HashSet<Resource>();
  56                     for (Resource r : rs) {
  57                         if (!unique.add(r))
  58                             continue;
  59                         CopyHandler handler = graph.adapt(r, CopyHandler.class);
  60                         handler.cutToClipboard(graph, builder);
  61                     }
  62                 }
  63             });
  64
  65             Simantics.setClipboard(builder);
  66             setCutMessage(builder.getContents().size(), "resource");
  67
  68         } catch (DatabaseException e) {
  69             Logger.defaultLogError(e);
  70         }
  71
  72         return null;
  73     }
  74
  75     private static void setCutMessage(int count, String elementName) {
  76         if (count > 1)
  77             setStatus("Cut " + count + " " + elementName + "s to clipboard");
  78         else if (count == 1)
  79             setStatus("Cut " + elementName + " to clipboard");
  80         else
  81             setStatus("Nothing to cut.");
  82     }
  83
  84     private static void setStatus(String message) {
  85         if (status != null)
  86             status.setMessage(message);
  87     }
  88
  89     public static String cutResourcesToClipboard(final Resource[] rs, ISelection selection) {
  90
  91         try {
  92             final SimanticsClipboardImpl builder = new SimanticsClipboardImpl();
  93             Simantics.getSession().syncRequest(new ReadRequest() {
  94                 @Override
  95                 public void run(ReadGraph graph) throws DatabaseException {
  96                     for (Resource r : rs) {
  97                         CopyHandler handler = graph.adapt(r, CopyHandler.class);
  98                         handler.cutToClipboard(graph, builder);
  99                     }
 100                 }
 101             });
 102             Simantics.setClipboard(builder);
 103             setCutMessage(builder.getContents().size(), "resource");
 104         } catch (DatabaseException e) {
 105             Logger.defaultLogError(e);
 106         }
 107
 108         return null;
 109     }
 110
 111 }