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diff --git a/bundles/org.simantics.db.management/src/org/simantics/db/management/ISessionContextProvider.java b/bundles/org.simantics.db.management/src/org/simantics/db/management/ISessionContextProvider.java
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+++ b/bundles/org.simantics.db.management/src/org/simantics/db/management/ISessionContextProvider.java
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+/*******************************************************************************
+ * Copyright (c) 2007, 2011 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.db.management;
+
+/**
+ * @see ISessionContextChangedListener
+ * @see SessionContextChangedEvent
+ * @see ISessionContext
+ * 
+ * @author Tuukka Lehtonen
+ */
+public interface ISessionContextProvider {
+
+    /**
+     * Adds a listener for selection changes in this selection provider.
+     * Has no effect if an identical listener is already registered.
+     *
+     * @param listener a session context changed listener
+     */
+    public void addContextChangedListener(ISessionContextChangedListener listener);
+
+    /**
+     * Returns the current selection for this provider.
+     * 
+     * @return the current session context
+     */
+    public ISessionContext getSessionContext();
+
+    /**
+     * Removes the given selection change listener from this selection provider.
+     * Has no affect if an identical listener is not registered.
+     *
+     * @param listener a session context changed listener
+     */
+    public void removeContextChangedListener(ISessionContextChangedListener listener);
+
+    /**
+     * Sets the current selection for this selection provider. The operation
+     * must only fire {@link ISessionContextChangedListener}s if the
+     * ISessionContext actually changed in the {@link #equals(Object)} sense.
+     * 
+     * @param context the new session context
+     * @return the old ISessionContext or <code>null</code> there was no
+     *         previous context
+     */
+    public ISessionContext setSessionContext(ISessionContext context);
+
+}