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diff --git a/src/com/vaadin/shared/Connector.java b/src/com/vaadin/shared/Connector.java
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+/* 
+@VaadinApache2LicenseForJavaFiles@
+ */
+package com.vaadin.shared;
+
+import java.io.Serializable;
+
+import com.vaadin.shared.communication.SharedState;
+import com.vaadin.terminal.gwt.client.ServerConnector;
+import com.vaadin.terminal.gwt.server.ClientConnector;
+
+/**
+ * Interface implemented by all classes that are capable of communicating with
+ * the server or the client side.
+ * <p>
+ * A connector consists of a shared state (server sets the state and
+ * automatically communicates changes to the client) and the possibility to do
+ * RPC calls either from the server to the client or from the client to the
+ * server.
+ * </p>
+ * <p>
+ * No classes should implement this interface directly, client side classes
+ * wanting to communicate with server side should implement
+ * {@link ServerConnector} and server side classes should implement
+ * {@link ClientConnector}.
+ * </p>
+ * 
+ * @author Vaadin Ltd
+ * @version @VERSION@
+ * @since 7.0.0
+ */
+public interface Connector extends Serializable {
+    /**
+     * Gets the current shared state of the connector.
+     * 
+     * @since 7.0.
+     * @return state The shared state object. Can be any sub type of
+     *         {@link SharedState}. Never null.
+     */
+    public SharedState getState();
+
+    /**
+     * Returns the id for this connector. This is set by the framework and does
+     * not change during the lifetime of a connector.
+     * 
+     * @return The id for the connector.
+     */
+    public String getConnectorId();
+
+    /**
+     * Gets the parent connector of this connector, or <code>null</code> if the
+     * connector is not attached to any parent.
+     * 
+     * @return the parent connector, or <code>null</code> if there is no parent.
+     */
+    public Connector getParent();
+
+}