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