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

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007 VTT Technical Research Centre of Finland and others.\r
   3  * All rights reserved. This program and the accompanying materials\r
   4  * are made available under the terms of the Eclipse Public License v1.0\r
   5  * which accompanies this distribution, and is available at\r
   6  * http://www.eclipse.org/legal/epl-v10.html\r
   7  *\r
   8  * Contributors:\r
   9  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  10  *******************************************************************************/\r
  11 package org.simantics.modeling.ui.modelBrowser.handlers;\r
  12 \r
  13 \r
  14 import java.util.HashSet;\r
  15 import java.util.Set;\r
  16 \r
  17 import org.eclipse.core.commands.AbstractHandler;\r
  18 import org.eclipse.core.commands.ExecutionEvent;\r
  19 import org.eclipse.core.commands.ExecutionException;\r
  20 import org.eclipse.jface.action.IStatusLineManager;\r
  21 import org.eclipse.jface.viewers.ISelection;\r
  22 import org.eclipse.ui.PlatformUI;\r
  23 import org.eclipse.ui.handlers.HandlerUtil;\r
  24 import org.simantics.Simantics;\r
  25 import org.simantics.db.ReadGraph;\r
  26 import org.simantics.db.Resource;\r
  27 import org.simantics.db.common.request.ReadRequest;\r
  28 import org.simantics.db.common.utils.Logger;\r
  29 import org.simantics.db.exception.DatabaseException;\r
  30 import org.simantics.db.layer0.adapter.CopyHandler;\r
  31 import org.simantics.db.layer0.util.SimanticsClipboardImpl;\r
  32 import org.simantics.ui.utils.ResourceAdaptionUtils;\r
  33 import org.simantics.utils.ui.workbench.WorkbenchUtils;\r
  34 \r
  35 public class StandardCutHandler extends AbstractHandler {\r
  36 \r
  37     private static IStatusLineManager status;\r
  38 \r
  39     @Override\r
  40     public Object execute(ExecutionEvent event) throws ExecutionException {\r
  41         status = WorkbenchUtils.getStatusLine( HandlerUtil.getActiveSite(event) );\r
  42         ISelection selection = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getSelectionService().getSelection();\r
  43         final Resource[] rs = ResourceAdaptionUtils.toResources( selection );\r
  44         if (rs == null) {\r
  45             setStatus("Nothing to cut.");\r
  46            return null;\r
  47         }\r
  48 \r
  49         try {\r
  50             final SimanticsClipboardImpl builder = new SimanticsClipboardImpl();\r
  51 \r
  52             Simantics.getSession().syncRequest(new ReadRequest() {\r
  53                 @Override\r
  54                 public void run(ReadGraph graph) throws DatabaseException {\r
  55                     Set<Resource> unique = new HashSet<Resource>();\r
  56                     for (Resource r : rs) {\r
  57                         if (!unique.add(r))\r
  58                             continue;\r
  59                         CopyHandler handler = graph.adapt(r, CopyHandler.class);\r
  60                         handler.cutToClipboard(graph, builder);\r
  61                     }\r
  62                 }\r
  63             });\r
  64 \r
  65             Simantics.setClipboard(builder);\r
  66             setCutMessage(builder.getContents().size(), "resource");\r
  67 \r
  68         } catch (DatabaseException e) {\r
  69             Logger.defaultLogError(e);\r
  70         }\r
  71 \r
  72         return null;\r
  73     }\r
  74 \r
  75     private static void setCutMessage(int count, String elementName) {\r
  76         if (count > 1)\r
  77             setStatus("Cut " + count + " " + elementName + "s to clipboard");\r
  78         else if (count == 1)\r
  79             setStatus("Cut " + elementName + " to clipboard");\r
  80         else\r
  81             setStatus("Nothing to cut.");\r
  82     }\r
  83 \r
  84     private static void setStatus(String message) {\r
  85         if (status != null)\r
  86             status.setMessage(message);\r
  87     }\r
  88 \r
  89     public static String cutResourcesToClipboard(final Resource[] rs, ISelection selection) {\r
  90 \r
  91         try {\r
  92             final SimanticsClipboardImpl builder = new SimanticsClipboardImpl();\r
  93             Simantics.getSession().syncRequest(new ReadRequest() {\r
  94                 @Override\r
  95                 public void run(ReadGraph graph) throws DatabaseException {\r
  96                     for (Resource r : rs) {\r
  97                         CopyHandler handler = graph.adapt(r, CopyHandler.class);\r
  98                         handler.cutToClipboard(graph, builder);\r
  99                     }\r
 100                 }\r
 101             });\r
 102             Simantics.setClipboard(builder);\r
 103             setCutMessage(builder.getContents().size(), "resource");\r
 104         } catch (DatabaseException e) {\r
 105             Logger.defaultLogError(e);\r
 106         }\r
 107 \r
 108         return null;\r
 109     }\r
 110     \r
 111 }\r