Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.modeling.template2d.ui / src / org / simantics / modeling / template2d / ui / adapters / ScenegraphChildrenRule.java

diff --git a/bundles/org.simantics.modeling.template2d.ui/src/org/simantics/modeling/template2d/ui/adapters/ScenegraphChildrenRule.java b/bundles/org.simantics.modeling.template2d.ui/src/org/simantics/modeling/template2d/ui/adapters/ScenegraphChildrenRule.java
new file mode 100644 (file)
index 0000000..3dedb1c
--- /dev/null
+++ b/bundles/org.simantics.modeling.template2d.ui/src/org/simantics/modeling/template2d/ui/adapters/ScenegraphChildrenRule.java
@@ -0,0 +1,53 @@
+/*******************************************************************************\r
+ * Copyright (c) 2013 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.modeling.template2d.ui.adapters;\r
+\r
+import java.util.ArrayList;\r
+import java.util.Collection;\r
+import java.util.Collections;\r
+\r
+import org.simantics.browsing.ui.model.children.ChildRule;\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.common.utils.ListUtils;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.layer0.Layer0;\r
+import org.simantics.scenegraph.ontology.ScenegraphResources;\r
+\r
+public class ScenegraphChildrenRule implements ChildRule {\r
+\r
+       @Override\r
+       public boolean isCompatible(Class<?> contentType) {\r
+               return contentType.equals(Resource.class);\r
+       }\r
+\r
+       @Override\r
+       public Collection<?> getChildren(ReadGraph graph, Object parent)\r
+                       throws DatabaseException {\r
+\r
+               Resource entry = (Resource)parent;\r
+               Layer0 L0 = Layer0.getInstance(graph);\r
+               ScenegraphResources SG = ScenegraphResources.getInstance(graph);\r
+               Resource list = graph.getPossibleObject(entry, SG.Node_children);\r
+               if(list != null) {\r
+                       if(graph.isInstanceOf(list, L0.List)) return ListUtils.toList(graph, list);\r
+               }\r
+               return Collections.emptyList();\r
+    }\r
+\r
+       @Override\r
+       public Collection<?> getParents(ReadGraph graph, Object child)\r
+                       throws DatabaseException {\r
+               return new ArrayList<Resource>();\r
+       }\r
+\r
+}\r