bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/modelBrowser2/model/SubscriptionNode.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
   3  * in 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.modeling.ui.modelBrowser2.model;\r
  13 \r
  14 import java.util.List;\r
  15 \r
  16 import org.eclipse.jface.viewers.ISelection;\r
  17 import org.simantics.browsing.ui.common.node.IDeletable;\r
  18 import org.simantics.browsing.ui.common.node.IDropTargetNode;\r
  19 import org.simantics.db.Resource;\r
  20 import org.simantics.db.exception.DatabaseException;\r
  21 import org.simantics.db.layer0.variable.VariableReference;\r
  22 import org.simantics.modeling.PropertyVariables;\r
  23 import org.simantics.modeling.subscription.AddSubscriptionItems;\r
  24 import org.simantics.modeling.utils.VariableReferences;\r
  25 import org.simantics.structural.ui.modelBrowser.nodes.AbstractNode;\r
  26 import org.simantics.ui.SimanticsUI;\r
  27 import org.simantics.utils.datastructures.Callback;\r
  28 import org.simantics.utils.ui.ErrorLogger;\r
  29 import org.simantics.utils.ui.ISelectionUtils;\r
  30 \r
  31 /**\r
  32  * @author Tuukka Lehtonen\r
  33  */\r
  34 public class SubscriptionNode extends AbstractNode implements IDeletable, IDropTargetNode {\r
  35 \r
  36     public SubscriptionNode(Resource resource) {\r
  37         super(resource);\r
  38     }\r
  39 \r
  40     @Override\r
  41     public void drop(Object data) {\r
  42         if (!(data instanceof ISelection))\r
  43             return;\r
  44         final List<PropertyVariables> vars = ISelectionUtils.filterSelection((ISelection) data, PropertyVariables.class);\r
  45         if (!vars.isEmpty()) {\r
  46             List<VariableReference> references;\r
  47             try {\r
  48                 references = SimanticsUI.getSession().syncRequest(VariableReferences.toReferences(vars));\r
  49                 addSubscriptions(references);\r
  50             } catch (DatabaseException e) {\r
  51                 ErrorLogger.defaultLogError(e);\r
  52             }\r
  53         } else {\r
  54             final List<VariableReference> references = ISelectionUtils.filterSelection((ISelection) data, VariableReference.class);\r
  55             if (!references.isEmpty()) {\r
  56                 addSubscriptions(references);\r
  57             }\r
  58         }\r
  59     }\r
  60 \r
  61     private void addSubscriptions(List<VariableReference> references) {\r
  62         SimanticsUI.getSession().asyncRequest(new AddSubscriptionItems(resource, references), new Callback<DatabaseException>() {\r
  63             @Override\r
  64             public void run(DatabaseException e) {\r
  65                 if (e != null)\r
  66                     ErrorLogger.defaultLogError(e);\r
  67             }\r
  68         });\r
  69     }\r
  70 \r
  71 }\r