Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.charts / src / org / simantics / charts / ui / ChartItemDropActionFactory.java

diff --git a/bundles/org.simantics.charts/src/org/simantics/charts/ui/ChartItemDropActionFactory.java b/bundles/org.simantics.charts/src/org/simantics/charts/ui/ChartItemDropActionFactory.java
new file mode 100644 (file)
index 0000000..70008d4
--- /dev/null
+++ b/bundles/org.simantics.charts/src/org/simantics/charts/ui/ChartItemDropActionFactory.java
@@ -0,0 +1,91 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2011 Association for Decentralized Information Management in\r
+ * Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ *     VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.charts.ui;\r
+\r
+import java.util.List;\r
+\r
+import org.simantics.Simantics;\r
+import org.simantics.charts.ontology.ChartResource;\r
+import org.simantics.databoard.util.ObjectUtils;\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.WriteGraph;\r
+import org.simantics.db.common.request.WriteRequest;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.layer0.SelectionHints;\r
+import org.simantics.db.layer0.adapter.DropActionFactory;\r
+import org.simantics.db.layer0.request.PossibleModel;\r
+import org.simantics.modeling.ModelingResources;\r
+import org.simantics.utils.datastructures.Callback;\r
+import org.simantics.utils.ui.ErrorLogger;\r
+import org.simantics.utils.ui.ISelectionUtils;\r
+\r
+/**\r
+ * @author Tuukka Lehtonen\r
+ */\r
+public class ChartItemDropActionFactory implements DropActionFactory {\r
+\r
+    @Override\r
+    public Runnable create(ReadGraph g, Object target, Object source, int operation) throws DatabaseException {\r
+        //System.out.println("DROP: " + source + " -> " + target);\r
+\r
+        final Resource chartItem = ISelectionUtils.getSinglePossibleKey(target, SelectionHints.KEY_MAIN, Resource.class);\r
+        if (chartItem == null)\r
+            return null;\r
+        Resource targetModel = g.syncRequest(new PossibleModel(chartItem));\r
+\r
+        List<Resource> srcs = ISelectionUtils.getPossibleKeys(source, SelectionHints.KEY_MAIN, Resource.class);\r
+        ModelingResources MOD = ModelingResources.getInstance(g);\r
+\r
+        Resource subscriptionItem = null;\r
+\r
+        for (Resource res : srcs) {\r
+               if (g.isInstanceOf(res, MOD.Subscription_Item)) {\r
+                       // Too much stuff dropped in one go.\r
+                       if (subscriptionItem != null)\r
+                               return null;\r
+\r
+                       Resource model = g.syncRequest(new PossibleModel(res));\r
+                       if (ObjectUtils.objectEquals(targetModel, model)) {\r
+                               subscriptionItem = res;\r
+                       }\r
+            }\r
+        }\r
+        if (subscriptionItem != null)\r
+               return setSubscriptionItem(chartItem, subscriptionItem);\r
+\r
+        return null;\r
+    }\r
+\r
+    private Runnable setSubscriptionItem(final Resource chartItem, final Resource subscriptionItem) {\r
+        return new Runnable() {\r
+            @Override\r
+            public void run() {\r
+                Simantics.getSession().asyncRequest(new WriteRequest() {\r
+                    @Override\r
+                    public void perform(WriteGraph graph) throws DatabaseException {\r
+                       ChartResource CHART = ChartResource.getInstance(graph);\r
+                       graph.deny(chartItem, CHART.Chart_Item_HasSubscriptionItem);\r
+                       graph.claim(chartItem, CHART.Chart_Item_HasSubscriptionItem, subscriptionItem);\r
+                    }\r
+                }, new Callback<DatabaseException>() {\r
+                    @Override\r
+                    public void run(DatabaseException e) {\r
+                        if (e != null)\r
+                            ErrorLogger.defaultLogError(e);\r
+                    }\r
+                });\r
+            }\r
+        };\r
+    }\r
+\r
+}\r