--- /dev/null	2019-01-07 20:04:35.000000000 +0100
+++ new/application/org.openjdk.jmc.flightrecorder.ext.jfx/src/main/java/org/openjdk/jmc/flightrecorder/ext/jfx/JfxVersionUtil.java	2019-01-07 20:04:34.000000000 +0100
@@ -0,0 +1,52 @@
+package org.openjdk.jmc.flightrecorder.ext.jfx;
+
+import org.openjdk.jmc.common.item.IAttribute;
+import org.openjdk.jmc.common.item.IItemCollection;
+import org.openjdk.jmc.common.unit.IQuantity;
+import org.openjdk.jmc.flightrecorder.rules.util.RulesToolkit;
+import org.openjdk.jmc.flightrecorder.rules.util.RulesToolkit.EventAvailability;
+
+/**
+ * Package local helper.
+ */
+final class JfxVersionUtil {
+	enum JavaFxEventAvailability {
+		None, JavaFx8, JavaFx12
+	}
+	
+	static JavaFxEventAvailability getAvailability(IItemCollection items) {
+		EventAvailability eventAvailability = RulesToolkit.getEventAvailability(items, JfxConstants.TYPE_ID_PULSE_PHASE_12);
+		if (RulesToolkit.isEventsEnabled(eventAvailability)) {
+			return JavaFxEventAvailability.JavaFx12;
+		}		
+		eventAvailability = RulesToolkit.getEventAvailability(items, JfxConstants.TYPE_ID_PULSE_PHASE_8);
+		if (RulesToolkit.isEventsEnabled(eventAvailability)) {
+			return JavaFxEventAvailability.JavaFx8;
+		}
+		return JavaFxEventAvailability.None;
+	}
+	
+
+	static String getPulseTypeId(JavaFxEventAvailability availability) {
+		if (availability == JavaFxEventAvailability.JavaFx8) {
+			return JfxConstants.TYPE_ID_PULSE_PHASE_8;
+		}
+		return JfxConstants.TYPE_ID_PULSE_PHASE_12;
+	}
+
+
+	static IAttribute<IQuantity> getPulseIdAttribute(JavaFxEventAvailability availability) {
+		if (availability == JavaFxEventAvailability.JavaFx8) {
+			return JfxConstants.ATTRIBUTE_PULSE_ID_8;
+		}
+		return JfxConstants.ATTRIBUTE_PULSE_ID_12;
+	}
+
+
+	static IAttribute<String> getPhaseNameAttribute(JavaFxEventAvailability availability) {
+		if (availability == JavaFxEventAvailability.JavaFx8) {
+			return JfxConstants.ATTRIBUTE_PHASE_NAME_8;
+		}
+		return JfxConstants.ATTRIBUTE_PHASE_NAME_12;
+	}
+}