bundles/org.simantics.charts/src/org/simantics/charts/ui/SubscriptionDropActionFactory.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2014 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.charts.ui;\r
  13 \r
  14 import java.util.Collections;\r
  15 import java.util.HashSet;\r
  16 import java.util.List;\r
  17 import java.util.Optional;\r
  18 import java.util.Set;\r
  19 \r
  20 import org.simantics.Simantics;\r
  21 import org.simantics.browsing.ui.common.ErrorLogger;\r
  22 import org.simantics.charts.internal.JsonUtils;\r
  23 import org.simantics.databoard.type.Datatype;\r
  24 import org.simantics.databoard.util.ObjectUtils;\r
  25 import org.simantics.db.ReadGraph;\r
  26 import org.simantics.db.Resource;\r
  27 import org.simantics.db.WriteGraph;\r
  28 import org.simantics.db.common.request.WriteRequest;\r
  29 import org.simantics.db.exception.DatabaseException;\r
  30 import org.simantics.db.layer0.SelectionHints;\r
  31 import org.simantics.db.layer0.adapter.DropActionFactory;\r
  32 import org.simantics.db.layer0.request.PossibleActiveVariableFromVariable;\r
  33 import org.simantics.db.layer0.request.PossibleModel;\r
  34 import org.simantics.db.layer0.variable.RVI;\r
  35 import org.simantics.db.layer0.variable.Variable;\r
  36 import org.simantics.db.layer0.variable.VariableReference;\r
  37 import org.simantics.db.layer0.variable.Variables;\r
  38 import org.simantics.layer0.Layer0;\r
  39 import org.simantics.modeling.ModelingResources;\r
  40 import org.simantics.modeling.PropertyVariables;\r
  41 import org.simantics.modeling.PropertyVariablesImpl;\r
  42 import org.simantics.modeling.utils.VariableReferences;\r
  43 import org.simantics.utils.ui.ISelectionUtils;\r
  44 \r
  45 /**\r
  46  * @author Tuukka Lehtonen\r
  47  */\r
  48 public class SubscriptionDropActionFactory implements DropActionFactory {\r
  49 \r
  50     @Override\r
  51     public Runnable create(ReadGraph g, Object target, Object source, int operation) throws DatabaseException {\r
  52         //System.out.println("DROP: " + source + " -> " + target);\r
  53 \r
  54         final Resource subscription = ISelectionUtils.getSinglePossibleKey(target, SelectionHints.KEY_MAIN, Resource.class);\r
  55         if (subscription == null)\r
  56             return null;\r
  57         Resource targetModel = g.syncRequest(new PossibleModel(subscription));\r
  58 \r
  59         if(source instanceof RVI) {\r
  60             RVI rvi = (RVI)source;\r
  61             List<VariableReference> refs = Collections.singletonList(new VariableReference(rvi, getDatatype(g, targetModel, rvi), null));\r
  62             return addSubscriptions(g, subscription, refs, Collections.<Resource>emptySet());\r
  63         }\r
  64 \r
  65         List<PropertyVariables> vars = ISelectionUtils.getPossibleKeys(source, SelectionHints.KEY_MAIN, PropertyVariables.class);\r
  66         if (!vars.isEmpty()) {\r
  67             // FIXME: this is a hack for indexed value support\r
  68             vars = PropertyVariablesImpl.resolve(g, vars);\r
  69             List<VariableReference> references = g.syncRequest(VariableReferences.toReferences(targetModel, vars));\r
  70             if (!references.isEmpty())\r
  71                 return addSubscriptions(g, subscription, references, Collections.<Resource>emptySet());\r
  72         } else {\r
  73             List<Resource> srcs = ISelectionUtils.getPossibleKeys(source, SelectionHints.KEY_MAIN, Resource.class);\r
  74             ModelingResources MOD = ModelingResources.getInstance(g);\r
  75             Set<Resource> movedItems = new HashSet<>();\r
  76             for (Resource src : srcs) {\r
  77                 if (g.isInstanceOf(src, MOD.Subscription_Item)) {\r
  78                     Resource model = g.syncRequest(new PossibleModel(src));\r
  79                     if (ObjectUtils.objectEquals(targetModel, model))\r
  80                         movedItems.add(src);\r
  81                 }\r
  82             }\r
  83             if (!movedItems.isEmpty())\r
  84                 return addSubscriptions(g, subscription, Collections.emptyList(), movedItems);\r
  85         }\r
  86 \r
  87         if (source instanceof String) {\r
  88             // JSON ?\r
  89             Optional<Variable> v = JsonUtils.tryParseJsonPropertyVariable(g, (String) source);\r
  90             if (v.isPresent()) {\r
  91                 List<VariableReference> references = g.syncRequest(VariableReferences.variablesToReferences(targetModel, Collections.singletonList(v.get())));\r
  92                 return addSubscriptions(g, subscription, references, Collections.emptySet());\r
  93             }\r
  94         }\r
  95 \r
  96         return null;\r
  97     }\r
  98 \r
  99     private Runnable addSubscriptions(ReadGraph graph, Resource subscription, List<VariableReference> references,\r
 100             Set<Resource> movedSubscriptionItems) throws DatabaseException {\r
 101         AddVariableToChartAction action = new AddVariableToChartAction(null, subscription, references).init(graph);\r
 102         return () -> {\r
 103             action.run();\r
 104             if(!movedSubscriptionItems.isEmpty()) {\r
 105                 Simantics.getSession().asyncRequest(new WriteRequest() {\r
 106                     @Override\r
 107                     public void perform(WriteGraph graph) throws DatabaseException {\r
 108                         Layer0 L0 = Layer0.getInstance(graph);\r
 109                         for (Resource item : movedSubscriptionItems) {\r
 110                             graph.deny(item, L0.PartOf);\r
 111                             graph.claim(subscription, L0.ConsistsOf, item);\r
 112                         }\r
 113                     }\r
 114                 }, e -> {\r
 115                     if (e != null)\r
 116                         ErrorLogger.defaultLogError(e);\r
 117                 });\r
 118             }\r
 119         };\r
 120     }\r
 121 \r
 122     static Datatype getDatatype(ReadGraph graph, Resource resource, RVI rvi) throws DatabaseException {\r
 123         Variable configuration = Variables.getConfigurationContext(graph, resource);\r
 124         Variable active = graph.syncRequest(new PossibleActiveVariableFromVariable(configuration));\r
 125         Variable var = rvi.resolve(graph, active != null ? active : configuration);\r
 126         return var.getDatatype(graph);\r
 127     }\r
 128 \r
 129 }\r