X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.modeling%2Fsrc%2Forg%2Fsimantics%2Fmodeling%2Fadapters%2FSCLChildRule.java;fp=bundles%2Forg.simantics.modeling%2Fsrc%2Forg%2Fsimantics%2Fmodeling%2Fadapters%2FSCLChildRule.java;h=8ca1b9ae8b5a676a8916a1b8b4ce95ac0bde9ca7;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.modeling/src/org/simantics/modeling/adapters/SCLChildRule.java b/bundles/org.simantics.modeling/src/org/simantics/modeling/adapters/SCLChildRule.java
new file mode 100644
index 000000000..8ca1b9ae8
--- /dev/null
+++ b/bundles/org.simantics.modeling/src/org/simantics/modeling/adapters/SCLChildRule.java
@@ -0,0 +1,59 @@
+package org.simantics.modeling.adapters;
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+
+import org.simantics.browsing.ui.model.children.ChildRule;
+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.modeling.ModelingResources;
+import org.simantics.scl.runtime.SCLContext;
+import org.simantics.scl.runtime.function.Function1;
+
+public class SCLChildRule implements ChildRule {
+
+    private Resource rule;
+    
+    public SCLChildRule(ReadGraph graph, Resource rule) {
+        this.rule = rule;
+    }
+    
+    @Override
+    public boolean isCompatible(Class<?> contentType) {
+        return contentType.equals(Resource.class) || contentType.equals(Variable.class);
+    }
+
+    @Override
+    public Collection<?> getChildren(ReadGraph graph, Object parent) throws DatabaseException {
+        
+        ModelingResources MOD = ModelingResources.getInstance(graph);
+        
+        Variable ruleVariable = Variables.getVariable(graph, rule);
+
+        Function1<Object,List<?>> getChildren = ruleVariable.getPossiblePropertyValue(graph, MOD.SCLChildRule_getChildren);
+        if(getChildren == null) return Collections.emptyList();
+
+        SCLContext sclContext = SCLContext.getCurrent();
+        Object oldGraph = sclContext.get("graph");
+        try {
+            sclContext.put("graph", graph);
+            Object value = getChildren.apply(parent);
+            return (Collection<?>)value;
+        } catch (Throwable t) {
+        	throw new DatabaseException(t);
+        } finally {
+            sclContext.put("graph", oldGraph);
+        }
+
+    }
+
+    @Override
+    public Collection<?> getParents(ReadGraph graph, Object child) throws DatabaseException {
+        return null;
+    }
+
+}