--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/visualizer/Util/src/com/sun/hotspot/igv/util/CompilationViewModel.java	Tue Feb 07 22:41:09 2012 +0100
@@ -0,0 +1,47 @@
+/*
+ * To change this template, choose Tools | Templates
+ * and open the template in the editor.
+ */
+
+package com.sun.hotspot.igv.util;
+
+import com.sun.hotspot.igv.data.*;
+import java.awt.Color;
+import java.util.List;
+
+public class CompilationViewModel implements ChangedEventProvider<CompilationViewModel> {
+    
+    private final ChangedEvent<CompilationViewModel> changedEvent = new ChangedEvent<>(this);
+    private final RangeSliderModel model;
+    private final Group group;
+
+    @Override
+    public ChangedEvent<CompilationViewModel> getChangedEvent() {
+        return changedEvent;
+    }
+    
+    public CompilationViewModel(RangeSliderModel model, Group group) {
+        this.model = model;
+        this.group = group;
+        model.getChangedEvent().addListener(rangeSliderChangedListener);
+    }
+    
+    private final ChangedListener<RangeSliderModel> rangeSliderChangedListener = new ChangedListener<RangeSliderModel>() {
+        @Override
+        public void changed(RangeSliderModel source) {
+            changedEvent.fire();
+        }
+    };
+    
+    public InputGraph getFirstSnapshot() {
+        return group.getGraphs().get(model.getFirstPosition());
+    }
+    
+    public InputGraph getSecondSnapshot() {
+        return group.getGraphs().get(model.getSecondPosition());
+    }
+
+    public void setColors(List<Color> colors) {
+        model.setColors(colors);
+    }
+}