gerrit.simantics Code Review - simantics/sysdyn.git/blob

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2012 Association for Decentralized Information Management in\r
   3  * Industry THTH ry.\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.sysdyn.ui.browser.actions.drop;\r
  13 \r
  14 import org.simantics.db.ReadGraph;\r
  15 import org.simantics.db.Resource;\r
  16 import org.simantics.db.WriteGraph;\r
  17 import org.simantics.db.common.request.WriteRequest;\r
  18 import org.simantics.db.exception.DatabaseException;\r
  19 import org.simantics.db.layer0.adapter.DropActionFactory;\r
  20 import org.simantics.layer0.Layer0;\r
  21 import org.simantics.sysdyn.SysdynResource;\r
  22 import org.simantics.ui.SimanticsUI;\r
  23 import org.simantics.ui.utils.AdaptionUtils;\r
  24 \r
  25 /**\r
  26  * Action for moving functions and function libraries in model browser \r
  27  * @author Teemu Lempinen\r
  28  *\r
  29  */\r
  30 public class FunctionDropAction implements DropActionFactory {\r
  31 \r
  32     @Override\r
  33     public Runnable create(ReadGraph g, Object target, Object source) throws DatabaseException {\r
  34         Resource t = AdaptionUtils.adaptToSingle(target, Resource.class);\r
  35         Resource s = AdaptionUtils.adaptToSingle(source, Resource.class);\r
  36 \r
  37         if(t == null || s == null)\r
  38             return null;\r
  39 \r
  40         SysdynResource sr = SysdynResource.getInstance(g);\r
  41         Layer0 L0 = Layer0.getInstance(g);\r
  42 \r
  43         // If target is a function, find functions parent to be the drop target\r
  44         if(g.isInstanceOf(t, sr.SysdynModelicaFunction))\r
  45             t = g.getSingleObject(t, L0.PartOf);\r
  46 \r
  47         final Resource library = t;\r
  48         final Resource tobemoved = s;\r
  49 \r
  50         // Libraries and model accept drops\r
  51         if(!(g.isInstanceOf(library, sr.SysdynModelicaFunctionLibrary) || \r
  52                 g.isInstanceOf(library, sr.SysdynModel) ||\r
  53                 g.isInstanceOf(library, sr.SharedFunctionOntology)))\r
  54             return null;\r
  55 \r
  56         // Functions and function libraries can be dropped\r
  57         if(!(g.isInstanceOf(tobemoved, sr.SysdynModelicaFunction) || \r
  58                 g.isInstanceOf(tobemoved, sr.SysdynModelicaFunctionLibrary)))\r
  59             return null;\r
  60 \r
  61 \r
  62         return new Runnable() {\r
  63 \r
  64             @Override\r
  65             public void run() {\r
  66                 SimanticsUI.getSession().asyncRequest(new WriteRequest() {\r
  67 \r
  68                     @Override\r
  69                     public void perform(WriteGraph graph) throws DatabaseException {\r
  70                         Layer0 L0 = Layer0.getInstance(graph);\r
  71                         Resource oldLib = graph.getSingleObject(tobemoved, L0.PartOf);\r
  72 \r
  73                         // Remove dragged entity from its parent and add it to the new parent\r
  74                         graph.claim(tobemoved, L0.PartOf, library);\r
  75                         graph.deny(tobemoved, L0.PartOf, oldLib);\r
  76                     }\r
  77 \r
  78                 });\r
  79             }\r
  80         };\r
  81     }\r
  82 \r
  83 }\r