W3C home > Mailing lists > Public > public-device-apis@w3.org > March 2010

Re: CfC: Messaging FPWD

From: Marengo Marco <marco.marengo@telecomitalia.it>
Date: Fri, 12 Mar 2010 12:21:38 +0100
To: DAP W3C <public-device-apis@w3.org>
Message-ID: <053289E9-EC9A-4417-A9F0-768FC696A068@telecomitalia.it>
before moving to FPWD I'd suggest to extend the subscription method with some basic filters. The rationale is that a generic subscription (e.g. on MessagingManager.EMAIL_TYPE) may generate a big number of callback invocations, forcing each application to implement its own filters.

My proposal for extending the subscribe method is:

int subscribe (in MessagingFilter filter, in OnIncomingMessage messageEventCB, in optional ErrorCallback errorCB);

interface MessagingFilter {
    attribute unsigned short messagingType;
    attribute DOMString from;
    attribute DOMString to;
    attribute DOMString body;

As you can see the basic use case (filtering on message type) is still supported, but it is now possible to receive callbacks only when a particular condition on sender and/or receiver and/or body is verified (eg. an email sent by "public-device-apis@w3.org").

Marco Marengo

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Received on Friday, 12 March 2010 11:22:32 UTC

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