module Make : functor (A : ARG) ->
with type identity = A.identity
and type key = A.key
and type server_notif = A.server_notif
and type client_notif = A.client_notif
Use this functor if you need to customise your notifications with client-specific data (or block notifications for specific clients). This is made to work specifically in a multi-server set-up as well, where In a multi-server set-up notifications might need to be serialised twice, once before broadcasting them to the other servers (without client information present), and then once more to forward them to the clients possibly augmenting it with client-specific data or block for specific clients; see ARG.prepare.
Note: The communication between servers is not implemented in this module. To `plug in' your method of transporting notifications between servers you can override S.notify. See the manual for an example (coming soon).
identity is the type of values used to differentiate one listener from another. Typically it will be a user, but it could also for instance be a chat window.
key is the type of values designating a given resource.
server notification type; Can be different from client_notif.
client notification type; Can be different from server_notif.
val init : unit -> unit Lwt.t
Initialise the notification module for the current client. This function needs to be called before using most other functions of this module. It isn't called implicitly during module instantiation because it relies on identity data which might not be available yet.
val deinit : unit -> unit
Deinitialise/deactivate the notification module for the current client.
val listen : key -> unit
Make client process listen on data whose index is key
val unlisten : key -> unit
Stop listening on data key
val notify :
?notfor:[ `Id of identity | `Me ] ->
key -> server_notif -> unit
Call notify key n to send a notification n to all clients currently listening on data referenced by key.
If ~notfor is `Me, notification will not be sent to the tab currently doing the request (the one which caused the notification to happen). Note that if notify is called with ~notfor:`Me outside of a request it will fail. If it is `Id id it won't be sent to the destination defined by id.
val client_ev :
(key * client_notif) Eliom_react.Down.t
Returns the client react event.
'a Eliom_react.Down.t = 'a React.E.t on client side.
Map a function on this event to react to notifications from the server. For example:
let%client handle_notification some_stuff ev = ...
let%server something some_stuff = ignore %client (ignore (React.E.map (handle_notification ~%some_stuff) ~%(Notif_module.client_ev ()) ) : unit)
val clean : unit -> unit
Call clean () to clear the tables from empty data.