X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.selectionview%2Fsrc%2Forg%2Fsimantics%2Fselectionview%2FSelectionViewUtils.java;fp=bundles%2Forg.simantics.selectionview%2Fsrc%2Forg%2Fsimantics%2Fselectionview%2FSelectionViewUtils.java;h=c9c38d1794c37c6b2f8e766871fc47c91ecf5a0d;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

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
index 000000000..c9c38d179
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+++ b/bundles/org.simantics.selectionview/src/org/simantics/selectionview/SelectionViewUtils.java
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+package org.simantics.selectionview;
+
+import java.util.List;
+
+import org.simantics.db.ReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.layer0.variable.Variable;
+import org.simantics.db.layer0.variable.Variables;
+import org.simantics.db.layer0.variable.Variables.Role;
+import org.simantics.scl.runtime.SCLContext;
+import org.simantics.scl.runtime.function.Function1;
+
+public class SelectionViewUtils {
+
+	public static Variable getSpecialCategory(ReadGraph graph, Resource rule, Variable info) throws DatabaseException {
+        
+		SelectionViewResources SEL = SelectionViewResources.getInstance(graph);
+		Resource categoryResource = info.getPossibleRepresents(graph);
+		
+		if(SEL.CategoryHidden.equals(categoryResource)) {
+			
+			Variable property = info.getParent(graph);
+			Variable parent = property.getParent(graph);
+			if(Role.PROPERTY.equals(parent.getPossibleRole(graph))) return null;
+			
+			Resource predicate = property.getPossiblePredicateResource(graph);
+			Variable ruleVariable = Variables.getVariable(graph, rule);
+
+			Function1<Object,List<?>> getSpecialCategory = ruleVariable.getPossiblePropertyValue(graph, SEL.getSpecialCategory);
+			if(getSpecialCategory == null) return null;
+
+			SCLContext sclContext = SCLContext.getCurrent();
+	        Object oldGraph = sclContext.get("graph");
+			try {
+				sclContext.put("graph", graph);
+				Resource cat = (Resource)getSpecialCategory.apply(predicate);
+				if(cat != null) return Variables.getVariable(graph, cat);
+			} catch (Throwable t) {
+				throw new DatabaseException(t);
+			} finally {
+	            sclContext.put("graph", oldGraph);
+			}
+		}
+		
+		return null;
+
+	}
+
+}