Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.selectionview / src / org / simantics / selectionview / SelectionViewUtils.java

diff --git a/bundles/org.simantics.selectionview/src/org/simantics/selectionview/SelectionViewUtils.java b/bundles/org.simantics.selectionview/src/org/simantics/selectionview/SelectionViewUtils.java
new file mode 100644 (file)
index 0000000..c9c38d1
--- /dev/null
+++ b/bundles/org.simantics.selectionview/src/org/simantics/selectionview/SelectionViewUtils.java
@@ -0,0 +1,50 @@
+package org.simantics.selectionview;\r
+\r
+import java.util.List;\r
+\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.layer0.variable.Variable;\r
+import org.simantics.db.layer0.variable.Variables;\r
+import org.simantics.db.layer0.variable.Variables.Role;\r
+import org.simantics.scl.runtime.SCLContext;\r
+import org.simantics.scl.runtime.function.Function1;\r
+\r
+public class SelectionViewUtils {\r
+\r
+       public static Variable getSpecialCategory(ReadGraph graph, Resource rule, Variable info) throws DatabaseException {\r
+        \r
+               SelectionViewResources SEL = SelectionViewResources.getInstance(graph);\r
+               Resource categoryResource = info.getPossibleRepresents(graph);\r
+               \r
+               if(SEL.CategoryHidden.equals(categoryResource)) {\r
+                       \r
+                       Variable property = info.getParent(graph);\r
+                       Variable parent = property.getParent(graph);\r
+                       if(Role.PROPERTY.equals(parent.getPossibleRole(graph))) return null;\r
+                       \r
+                       Resource predicate = property.getPossiblePredicateResource(graph);\r
+                       Variable ruleVariable = Variables.getVariable(graph, rule);\r
+\r
+                       Function1<Object,List<?>> getSpecialCategory = ruleVariable.getPossiblePropertyValue(graph, SEL.getSpecialCategory);\r
+                       if(getSpecialCategory == null) return null;\r
+\r
+                       SCLContext sclContext = SCLContext.getCurrent();\r
+               Object oldGraph = sclContext.get("graph");\r
+                       try {\r
+                               sclContext.put("graph", graph);\r
+                               Resource cat = (Resource)getSpecialCategory.apply(predicate);\r
+                               if(cat != null) return Variables.getVariable(graph, cat);\r
+                       } catch (Throwable t) {\r
+                               throw new DatabaseException(t);\r
+                       } finally {\r
+                   sclContext.put("graph", oldGraph);\r
+                       }\r
+               }\r
+               \r
+               return null;\r
+\r
+       }\r
+\r
+}\r