modelBrowser/handlers/CreateConnectionPoint.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.modelBrowser.handlers;
  13
  14 import java.util.HashSet;
  15 import java.util.List;
  16 import java.util.Set;
  17
  18 import org.eclipse.core.commands.AbstractHandler;
  19 import org.eclipse.core.commands.ExecutionEvent;
  20 import org.eclipse.core.commands.ExecutionException;
  21 import org.eclipse.jface.viewers.ISelection;
  22 import org.eclipse.ui.handlers.HandlerUtil;
  23 import org.simantics.db.Resource;
  24 import org.simantics.db.WriteGraph;
  25 import org.simantics.db.common.request.WriteRequest;
  26 import org.simantics.db.exception.DatabaseException;
  27 import org.simantics.db.layer0.SelectionHints;
  28 import org.simantics.modeling.flags.LiftFlag;
  29 import org.simantics.ui.SimanticsUI;
  30 import org.simantics.utils.ui.ISelectionUtils;
  31
  32 /**
  33  * See <a href="https://www.simantics.org/wiki/index.php/Modeling_ontology#Creating_connection_points}">Creating connection points</a>
  34  *
  35  * @author Hannu Niemistö
  36  */
  37 public class CreateConnectionPoint extends AbstractHandler {
  38
  39     private static List<Resource> getFlagResource(ISelection sel) {
  40         return ISelectionUtils.getPossibleKeys(sel, SelectionHints.KEY_MAIN, Resource.class);
  41     }
  42
  43     @Override
  44     public Object execute(ExecutionEvent event) throws ExecutionException {
  45         ISelection sel = HandlerUtil.getCurrentSelection(event);
  46         List<Resource> flags = getFlagResource(sel);
  47         if (flags.isEmpty())
  48             return null;
  49         final Set<Resource> flagSet = new HashSet<Resource>(flags);
  50
  51         SimanticsUI.getSession().asyncRequest(new WriteRequest() {
  52             @Override
  53             public void perform(WriteGraph g) throws DatabaseException {
  54                 for (Resource flag : flagSet)
  55                     LiftFlag.liftFlag(g, flag);
  56             }
  57         });
  58
  59         return null;
  60     }
  61
  62 }
  63