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diff --git a/bundles/org.simantics.g2d/src/org/simantics/g2d/elementclass/canvas/CanvasClass.java b/bundles/org.simantics.g2d/src/org/simantics/g2d/elementclass/canvas/CanvasClass.java
new file mode 100644
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+++ b/bundles/org.simantics.g2d/src/org/simantics/g2d/elementclass/canvas/CanvasClass.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.elementclass.canvas;
+
+import org.simantics.g2d.canvas.ICanvasContext;
+import org.simantics.g2d.diagram.DiagramHints;
+import org.simantics.g2d.element.ElementClass;
+import org.simantics.g2d.element.handler.impl.BorderColorImpl;
+import org.simantics.g2d.element.handler.impl.DefaultTransform;
+import org.simantics.g2d.element.handler.impl.FillColorImpl;
+import org.simantics.g2d.element.handler.impl.Resizeable;
+import org.simantics.utils.datastructures.hints.IHintContext.Key;
+import org.simantics.utils.datastructures.hints.IHintContext.KeyOf;
+
+/**
+ * @author Toni Kalajainen
+ */
+public class CanvasClass {
+
+    public static final Key KEY_CANVAS = new KeyOf(ICanvasContext.class);
+
+    /**
+     * Class that paints canvas as an element
+     * Keys:
+     *  {@link CanvasPainter}.KEY_CANVAS
+     */
+    public static final ElementClass CANVAS_CLASS =
+        ElementClass.compile(
+                Resizeable.UNCONSTRICTED,
+                DefaultTransform.INSTANCE,
+                CanvasPainter.INSTANCE
+        );
+
+    /**
+     * Class that previews another diagram
+     * Keys:
+     * 	{@link DiagramHints}.KEY_DIAGRAM
+     * 	{@link DiagramPainter}.KEY_VIEWPORT
+     */
+    public static final ElementClass DIAGRAM_CLASS =
+        ElementClass.compile(
+                Resizeable.UNCONSTRICTED,
+                DefaultTransform.INSTANCE,
+                DiagramPainter.INSTANCE
+        );
+
+    /**
+     * Class that previews an element of another diagram.
+     * Keys:
+     * 	{@link ElementViewport}.KEY_ELEMENT
+     */
+    public static final ElementClass ELEMENT_VIEWPORT_CLASS =
+        ElementClass.compile(
+                FillColorImpl.UNSET,
+                BorderColorImpl.UNSET,
+                Resizeable.UNCONSTRICTED,
+                DefaultTransform.INSTANCE,
+                ElementViewport.INSTANCE,
+                DiagramPainter.INSTANCE
+        );
+
+}