terra25 wrote:I have a class that extendes a Tree component
Is possible to send that class from the client to the server or from the server to the client serializyng that class that extends a visual component.
No. GWT can't do that.
Only classes that implement com.google.gwt.user.client.rpc.IsSerializable
can be serialized and sent between the client and the server.
Widget's are not serializable, so it is better to send moel information and build the GUI on the client side.
If you want to use a custom component on the client, place it in the client directory.