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Diffstat (limited to 'src/com/vaadin/terminal/Extension.java')
| -rw-r--r-- | src/com/vaadin/terminal/Extension.java | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/src/com/vaadin/terminal/Extension.java b/src/com/vaadin/terminal/Extension.java index 7769423f0d..ef5bb4cf8d 100644 --- a/src/com/vaadin/terminal/Extension.java +++ b/src/com/vaadin/terminal/Extension.java @@ -6,6 +6,22 @@ package com.vaadin.terminal; import com.vaadin.terminal.gwt.server.ClientConnector; +/** + * An extension is an entity that is attached to a Component or another + * Extension and independently communicates between client and server. + * <p> + * An extension can only be attached once. It is not supported to move an + * extension from one target to another. + * <p> + * Extensions can use shared state and RPC in the same way as components. + * + * @author Vaadin Ltd + * @version @VERSION@ + * @since 7.0.0 + */ public interface Extension extends ClientConnector { - + /* + * Currently just an empty marker interface to distinguish between + * extensions and other connectors, e.g. components + */ } |