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.core.runtime.IProgressMonitor;
  21 import org.eclipse.core.runtime.IStatus;
  22 import org.eclipse.core.runtime.Status;
  23 import org.eclipse.core.runtime.SubMonitor;
  24 import org.eclipse.core.runtime.jobs.Job;
  25 import org.eclipse.jface.action.IStatusLineManager;
  26 import org.eclipse.jface.viewers.ISelection;
  27 import org.eclipse.ui.PlatformUI;
  28 import org.eclipse.ui.handlers.HandlerUtil;
  29 import org.simantics.Simantics;
  30 import org.simantics.db.ReadGraph;
  31 import org.simantics.db.Resource;
  32 import org.simantics.db.common.request.ReadRequest;
  33 import org.simantics.db.common.utils.Logger;
  34 import org.simantics.db.exception.DatabaseException;
  35 import org.simantics.db.layer0.adapter.CopyHandler;
  36 import org.simantics.db.layer0.util.SimanticsClipboardImpl;
  37 import org.simantics.ui.utils.ResourceAdaptionUtils;
  38 import org.simantics.utils.ui.workbench.WorkbenchUtils;
  39
  40 public class StandardCutHandler extends AbstractHandler {
  41
  42     private static IStatusLineManager status;
  43
  44     @Override
  45     public Object execute(ExecutionEvent event) throws ExecutionException {
  46         status = WorkbenchUtils.getStatusLine( HandlerUtil.getActiveSite(event) );
  47         ISelection selection = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getSelectionService().getSelection();
  48         final Resource[] rs = ResourceAdaptionUtils.toResources( selection );
  49         if (rs == null) {
  50             setStatus("Nothing to cut.");
  51            return null;
  52         }
  53         Job job = new Job("Cut resources") {
  54
  55             @Override
  56             protected IStatus run(IProgressMonitor monitor) {
  57                 monitor.beginTask("Cut resources", rs.length);
  58                 try {
  59                     final SimanticsClipboardImpl builder = new SimanticsClipboardImpl();
  60
  61                     Simantics.getSession().syncRequest(new ReadRequest() {
  62                         @Override
  63                         public void run(ReadGraph graph) throws DatabaseException {
  64                             Set<Resource> unique = new HashSet<Resource>();
  65                             for (Resource r : rs) {
  66                                 if (!unique.add(r))
  67                                     continue;
  68                                 CopyHandler handler = graph.adapt(r, CopyHandler.class);
  69                                 handler.cutToClipboard(graph, builder, SubMonitor.convert(monitor, 1));
  70                             }
  71                         }
  72                     });
  73
  74                     Simantics.setClipboard(builder);
  75                     setCutMessage(builder.getContents().size(), "resource");
  76
  77                 } catch (DatabaseException e) {
  78                     Logger.defaultLogError(e);
  79                 }
  80                 return Status.OK_STATUS;
  81             }
  82         };
  83         job.setUser(true);
  84         job.schedule();
  85
  86         return null;
  87     }
  88
  89     private static void setCutMessage(int count, String elementName) {
  90         if (count > 1)
  91             setStatus("Cut " + count + " " + elementName + "s to clipboard");
  92         else if (count == 1)
  93             setStatus("Cut " + elementName + " to clipboard");
  94         else
  95             setStatus("Nothing to cut.");
  96     }
  97
  98     private static void setStatus(String message) {
  99         if (status != null)
 100             status.setMessage(message);
 101     }
 102
 103     public static String cutResourcesToClipboard(final Resource[] rs, ISelection selection) {
 104
 105         try {
 106             final SimanticsClipboardImpl builder = new SimanticsClipboardImpl();
 107             Simantics.getSession().syncRequest(new ReadRequest() {
 108                 @Override
 109                 public void run(ReadGraph graph) throws DatabaseException {
 110                     for (Resource r : rs) {
 111                         CopyHandler handler = graph.adapt(r, CopyHandler.class);
 112                         handler.cutToClipboard(graph, builder, null);
 113                     }
 114                 }
 115             });
 116             Simantics.setClipboard(builder);
 117             setCutMessage(builder.getContents().size(), "resource");
 118         } catch (DatabaseException e) {
 119             Logger.defaultLogError(e);
 120         }
 121
 122         return null;
 123     }
 124
 125 }