Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.modeling.template2d.ui / src / org / simantics / modeling / template2d / ui / actions / FixLinkedList.java

diff --git a/bundles/org.simantics.modeling.template2d.ui/src/org/simantics/modeling/template2d/ui/actions/FixLinkedList.java b/bundles/org.simantics.modeling.template2d.ui/src/org/simantics/modeling/template2d/ui/actions/FixLinkedList.java
new file mode 100644 (file)
index 0000000..2963144
--- /dev/null
+++ b/bundles/org.simantics.modeling.template2d.ui/src/org/simantics/modeling/template2d/ui/actions/FixLinkedList.java
@@ -0,0 +1,79 @@
+/*******************************************************************************\r
+ * Copyright (c) 2012 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.actions;\r
+\r
+import java.util.Collection;\r
+import java.util.HashSet;\r
+import java.util.List;\r
+import java.util.Set;\r
+\r
+import org.simantics.Simantics;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.WriteGraph;\r
+import org.simantics.db.common.request.ObjectsWithType;\r
+import org.simantics.db.common.request.WriteRequest;\r
+import org.simantics.db.common.utils.ListUtils;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.layer0.adapter.ActionFactory;\r
+import org.simantics.db.layer0.util.RemoverUtil;\r
+import org.simantics.layer0.Layer0;\r
+import org.simantics.scenegraph.ontology.ScenegraphResources;\r
+\r
+public class FixLinkedList implements ActionFactory {\r
+\r
+    @Override\r
+    public Runnable create(Object target) {\r
+        if(!(target instanceof Resource))\r
+            return null;\r
+        final Resource parent = (Resource)target;\r
+\r
+        return new Runnable() {\r
+            @Override\r
+            public void run() {\r
+                Simantics.getSession().asyncRequest(new WriteRequest() {\r
+                    @Override\r
+                    public void perform(WriteGraph g) throws DatabaseException {\r
+                        g.markUndoPoint();\r
+                        Layer0 L0 = Layer0.getInstance(g);\r
+                        ScenegraphResources SG = ScenegraphResources.getInstance(g);\r
+\r
+                        Collection<Resource> consist = g.syncRequest(new ObjectsWithType(parent, L0.ConsistsOf, SG.Node));\r
+\r
+                        Resource list = g.getPossibleObject(parent, SG.Node_children);\r
+                        if (list != null) {\r
+                            try {\r
+                                List<Resource> children = ListUtils.toList(g, list);\r
+                                Set<Resource> childSet = new HashSet<Resource>(children);\r
+                                Set<Resource> consistSet = new HashSet<Resource>(consist);\r
+                                if (childSet.equals(consistSet)) {\r
+                                    return;\r
+                                }\r
+                            } catch (DatabaseException e) {\r
+                            }\r
+\r
+                            // List is invalid, recreate it.\r
+                            RemoverUtil.remove(g, list);\r
+                            g.deny(parent, SG.Node_children);\r
+                            list = ListUtils.create(g, consist);\r
+                            g.claim(parent, SG.Node_children, list);\r
+\r
+                        } else {\r
+                            // No list at all - create one from children.\r
+                            list = ListUtils.create(g, consist);\r
+                            g.claim(parent, SG.Node_children, list);\r
+                        }\r
+                    }\r
+                });\r
+            }\r
+        };\r
+    }\r
+}\r