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diff --git a/bundles/org.simantics.browsing.ui.model/src/org/simantics/browsing/ui/model/tooltips/TooltipContribution.java b/bundles/org.simantics.browsing.ui.model/src/org/simantics/browsing/ui/model/tooltips/TooltipContribution.java
new file mode 100644
index 000000000..2a9d36d02
--- /dev/null
+++ b/bundles/org.simantics.browsing.ui.model/src/org/simantics/browsing/ui/model/tooltips/TooltipContribution.java
@@ -0,0 +1,44 @@
+package org.simantics.browsing.ui.model.tooltips;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import org.simantics.browsing.ui.BuiltinKeys;
+import org.simantics.browsing.ui.NodeContext;
+import org.simantics.browsing.ui.model.InvalidContribution;
+import org.simantics.browsing.ui.model.nodetypes.NodeType;
+import org.simantics.browsing.ui.model.tests.Test;
+import org.simantics.browsing.ui.model.visuals.VisualsContribution;
+import org.simantics.db.ReadGraph;
+import org.simantics.db.exception.DatabaseException;
+
+public class TooltipContribution extends VisualsContribution {
+    TooltipRule tooltipRule;
+    
+    private Map<Object, Object> auxiliary = new HashMap<>();
+    
+    public TooltipContribution(NodeType nodeType, Test test, TooltipRule tooltipRule, double priority) throws InvalidContribution {
+        super(nodeType, test, priority);
+        if(!tooltipRule.isCompatible(nodeType.getContentType()))
+            throw new InvalidContribution("Tooltip rule is not compatible with the content type.");
+        this.tooltipRule = tooltipRule;
+    }
+
+    public Object getTooltip(Object event, Object parent, NodeContext context) {
+        try {
+            return tooltipRule.createTooltip(event, parent, context, auxiliary);
+        } finally {
+            auxiliary.clear();
+        }
+        
+    }    
+    
+    public boolean shouldCreateToolTip(ReadGraph graph, NodeContext context) throws DatabaseException {
+        Object content = context.getConstant(BuiltinKeys.INPUT);
+        if(test != null && !test.test(graph, content))
+            return false;
+        
+        return tooltipRule.shouldCreateToolTip(graph, context, auxiliary);
+    }
+    
+}