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diff --git a/bundles/org.simantics.g2d/src/org/simantics/g2d/canvas/impl/MouseCaptureHandle.java b/bundles/org.simantics.g2d/src/org/simantics/g2d/canvas/impl/MouseCaptureHandle.java
new file mode 100644
index 000000000..a57d979cd
--- /dev/null
+++ b/bundles/org.simantics.g2d/src/org/simantics/g2d/canvas/impl/MouseCaptureHandle.java
@@ -0,0 +1,71 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.g2d.canvas.impl;
+
+import org.simantics.g2d.canvas.IMouseCaptureHandle;
+import org.simantics.g2d.canvas.IMouseCaptureHandleListener;
+import org.simantics.utils.datastructures.ListenerList;
+
+/**
+ * @author Toni Kalajainen
+ */
+public class MouseCaptureHandle implements IMouseCaptureHandle {
+
+    boolean released = false;
+    final int mouseId;
+    ListenerList<IMouseCaptureHandleListener> listeners;
+
+    public MouseCaptureHandle(int mouseId) 
+    {
+        this.mouseId = mouseId;
+    }
+    
+    @Override
+    public int mouseId() {
+        return mouseId;
+    }
+
+    @Override
+    public void release() {
+        synchronized(this) {
+            if (released) return;
+            released = true;
+        }
+        fireOnReleased();
+    }
+
+    void fireOnReleased() {
+        ListenerList<IMouseCaptureHandleListener> lis;
+        synchronized(this) {
+            lis = listeners;
+            if (lis==null) return;
+        }
+        
+        for (IMouseCaptureHandleListener l : lis.getListeners())
+            l.onCaptureReleased(this);
+    }
+
+    @Override
+    public void removeMouseCaptureHandleListener(IMouseCaptureHandleListener listener) {    
+        if (listeners == null) return;
+        listeners.remove(listener);
+    }
+
+    @Override
+    public synchronized void addMouseCaptureHandleListener(IMouseCaptureHandleListener listener) {
+        if (listeners == null) {
+            listeners = new ListenerList<IMouseCaptureHandleListener>(IMouseCaptureHandleListener.class);
+        }
+        listeners.add(listener);
+    }
+    
+}