Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.document.ui / src / org / simantics / document / ui / actions / FolderDropAction.java

diff --git a/bundles/org.simantics.document.ui/src/org/simantics/document/ui/actions/FolderDropAction.java b/bundles/org.simantics.document.ui/src/org/simantics/document/ui/actions/FolderDropAction.java
new file mode 100644 (file)
index 0000000..3004919
--- /dev/null
+++ b/bundles/org.simantics.document.ui/src/org/simantics/document/ui/actions/FolderDropAction.java
@@ -0,0 +1,77 @@
+package org.simantics.document.ui.actions;\r
+\r
+import java.util.List;\r
+\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.document.DocumentResource;\r
+import org.simantics.ui.SimanticsUI;\r
+import org.simantics.utils.ui.ISelectionUtils;\r
+\r
+public class FolderDropAction implements DropActionFactory {\r
+       \r
+       private Resource folderType;\r
+       private Resource relation;\r
+       private Resource inverse;\r
+       \r
+       public FolderDropAction(ReadGraph graph, String folderUri, String relationUri) throws DatabaseException {\r
+               folderType = graph.getResource(folderUri);\r
+               relation = graph.getResource(relationUri);\r
+               inverse = graph.getPossibleInverse(relation);\r
+       }\r
+       \r
+       @Override\r
+       public Runnable create(ReadGraph g, Object target, Object source, int operation) throws DatabaseException {\r
+               final Resource lib = ISelectionUtils.getSinglePossibleKey(target, SelectionHints.KEY_MAIN, Resource.class);\r
+\r
+               if (lib == null)\r
+                       return null;\r
+\r
+               final List<Resource> selections = ISelectionUtils.getPossibleKeys(source, SelectionHints.KEY_MAIN, Resource.class);\r
+\r
+               if (selections.isEmpty()) {\r
+                       return null;\r
+               }\r
+               if (!g.isInstanceOf(lib, folderType))\r
+                       return null;\r
+               DocumentResource doc = DocumentResource.getInstance(g);\r
+               for (Resource r : selections) {\r
+                       if (!g.isInstanceOf(r, doc.Document))\r
+                               return null;\r
+               }\r
+               Runnable runnable = new Runnable() {\r
+\r
+                       @Override\r
+                       public void run() {\r
+                               SimanticsUI.getSession().asyncRequest(new WriteRequest() {\r
+\r
+                                       @Override\r
+                                       public void perform(WriteGraph graph) throws DatabaseException {\r
+                                               \r
+                                               for (Resource r : selections) {\r
+                                                       if (!graph.hasStatement(lib,relation,r)) {\r
+                                                               if (inverse != null) {\r
+                                                                       // check if moved document is children of another document (tree revisions)\r
+                                                                       // if it is, prevent moving it.\r
+                                                                       Resource r2 = graph.getPossibleObject(r, inverse);\r
+                                                                       if (r2 != null && !graph.isInstanceOf(r2, folderType))\r
+                                                                               continue;\r
+                                                                       graph.deny(r,inverse);\r
+                                                               }\r
+                                                               graph.claim(lib, relation,r);\r
+                                                       }\r
+                                               }\r
+                                       }\r
+                               });\r
+                       }\r
+               };\r
+               return runnable;\r
+               \r
+       }\r
+\r
+}\r