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diff --git a/bundles/org.simantics.g2d/src/org/simantics/g2d/image/impl/ImageProxy.java b/bundles/org.simantics.g2d/src/org/simantics/g2d/image/impl/ImageProxy.java
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+/*******************************************************************************
+ * 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.image.impl;
+
+import java.awt.Shape;
+import java.awt.geom.Rectangle2D;
+import java.lang.ref.WeakReference;
+import java.util.EnumSet;
+
+import org.simantics.g2d.image.Image;
+import org.simantics.scenegraph.Node;
+import org.simantics.scenegraph.g2d.G2DParentNode;
+import org.simantics.utils.datastructures.ListenerList;
+
+/**
+ * ImageProxy keeps strong reference to an original image, but weak reference
+ * from original image to proxy image.
+ * <p>
+ * Listeners attached to ImageProxy relays events from the original image.
+ *
+ * @author Toni Kalajainen <toni.kalajainen@vtt.fi>
+ */
+public class ImageProxy implements Image {
+
+    ListenerList<ImageListener> list = null;
+
+    /** Strong reference to the original image */
+    Image source;
+    Node node = null;
+    /** Listener for the original image */
+    WeakImageListener sourceListener;
+
+    public ImageProxy(Image original) {
+        if (original==null) throw new IllegalArgumentException("null arg");
+        this.source = original;
+    }
+
+    protected void notifyChanged()
+    {
+        ImageListener[] listeners;
+        synchronized(this) {
+            if (list==null) return;
+            listeners = list.getListeners();
+        }
+        for (ImageListener l : listeners)
+            l.onContentChangedNotification(this);
+    }
+
+    @Override
+    public synchronized void addImageListener(ImageListener listener) {
+        if (list==null) list = new ListenerList<ImageListener>(ImageListener.class);
+        if (sourceListener==null) {
+            sourceListener = new WeakImageListener(this);
+            source.addImageListener(sourceListener);
+        }
+        list.add(listener);
+    }
+
+    @Override
+    public synchronized void removeImageListener(ImageListener listener) {
+        if (list==null) return;
+        list.remove(listener);
+        if (list.isEmpty()) {
+            source.removeImageListener(sourceListener);
+        }
+    }
+
+    static class WeakImageListener implements ImageListener {
+        WeakReference<ImageProxy> ref;
+        public WeakImageListener(ImageProxy img)
+        {
+            ref = new WeakReference<ImageProxy>(img);
+        }
+
+        @Override
+        public void onContentChangedNotification(Image image) {
+            ImageProxy i = ref.get();
+            if (i == null) {
+                image.removeImageListener(this);
+            } else {
+                i.notifyChanged();
+            }
+        }
+    }
+
+    @Override
+    public Rectangle2D getBounds() {
+        return source.getBounds();
+    }
+
+    @Override
+    public EnumSet<Feature> getFeatures() {
+        return source.getFeatures();
+    }
+
+    @Override
+    public Shape getOutline() {
+        return source.getOutline();
+    }
+
+    @Override
+    public Node init(G2DParentNode parent) {
+        this.node = source.init(parent);
+        return this.node;
+    }
+
+    public synchronized void setSource(Image newSource) {
+        if (newSource==null) throw new IllegalArgumentException("null");
+        if (source == newSource) return;
+        Image oldSource = source;
+        if(node != null) {
+            node.remove(); // FIXME
+            node = null;
+        }
+
+        source = newSource;
+
+        if (sourceListener!=null) {
+            oldSource.removeImageListener(sourceListener);
+            newSource.addImageListener(sourceListener);
+        }
+
+        notifyChanged();
+    }
+
+}
+