Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.document.ui / src / org / simantics / document / ui / contribution / NameInputValidator.java

diff --git a/bundles/org.simantics.document.ui/src/org/simantics/document/ui/contribution/NameInputValidator.java b/bundles/org.simantics.document.ui/src/org/simantics/document/ui/contribution/NameInputValidator.java
new file mode 100644 (file)
index 0000000..9bbcbbe
--- /dev/null
+++ b/bundles/org.simantics.document.ui/src/org/simantics/document/ui/contribution/NameInputValidator.java
@@ -0,0 +1,57 @@
+package org.simantics.document.ui.contribution;\r
+\r
+import java.util.Collection;\r
+\r
+import org.eclipse.jface.dialogs.IInputValidator;\r
+import org.simantics.Simantics;\r
+import org.simantics.browsing.ui.swt.widgets.impl.Widget;\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.management.ISessionContext;\r
+import org.simantics.db.request.Read;\r
+import org.simantics.layer0.Layer0;\r
+import org.simantics.utils.ui.AdaptionUtils;\r
+\r
+public class NameInputValidator implements IInputValidator, Widget {\r
+       \r
+       private Resource selection;\r
+       \r
+       @Override\r
+       public String isValid(final String newText) {\r
+               if (newText == null || newText.length() == 0)\r
+                       return "Empty name is not allowed";\r
+               if (selection != null) {\r
+                       try {\r
+                               return Simantics.getSession().syncRequest(new Read<String>() {\r
+                                       @Override\r
+                                       public String perform(ReadGraph graph) throws DatabaseException {\r
+                                               Layer0 l0 = Layer0.getInstance(graph);\r
+                                               Resource lib = graph.getPossibleObject(selection, l0.PartOf);\r
+                                               if (lib == null)\r
+                                                       return null;\r
+                                               Collection<Resource> resources = graph.getObjects(lib, l0.ConsistsOf);\r
+                                               for (Resource resource : resources) {\r
+                                                       if (resource.equals(selection))\r
+                                                               continue;\r
+                                                       String n = graph.getPossibleRelatedValue(resource, l0.HasName);\r
+                                                       if (newText.equals(n))\r
+                                                               return "Cannot have duplicate name " + newText;\r
+                                               }\r
+                                               return null;\r
+                                       }\r
+                               });\r
+                       } catch (DatabaseException e) {\r
+                               return e.getMessage();\r
+                       }\r
+               }\r
+               return null;\r
+       }\r
+       \r
+       @Override\r
+       public void setInput(ISessionContext context, Object input) {\r
+               selection = AdaptionUtils.adaptToSingle(input, Resource.class);\r
+               \r
+       }\r
+\r
+}\r