- From: Venezia Claudio <claudio.venezia@telecomitalia.it>
- Date: Fri, 15 Feb 2008 14:29:17 +0100
- To: <public-appformats@w3.org>
- Message-ID: <F5F8BEB3F2C54240999C08F4D455D28802712D4C@PTPEVS108BA020.idc.cww.telecomitalia.i>
Hi All, A few <comments> on the "spec": Spec section 7.4 - Cross-widget messaging "AT RISK/Low Priority: This section will define how widgets will be able to communicate with each other by sending messages via javascript. We are going to base this model on the Cross-document messaging model found in HTML 5. Widgets should be able to announce and unannounce themselves to other widgets." <We understand the Cross widget messaging issue as the matter of enabling a web application running in a browser window to communicate with another running in a different one. In the HTML 5 spec the the cross document messaging processing model if DOC A needs to post a message to DOC B, DOC A must have inside the object element containing DOC B. In the cross messaging between Widgets created by different providers this assumption seems to be unfeasible without introducing a broker/middleware layer.> "Widgets ought to be able to have some control as to which other widgets they expose themselves to (in some unique/per instance base). For instance, by association via digital signature" <In our understanding the need of keeping control of which other widgets they expose themselves to is again the proof that a minimal broker/middleware should be specified.> "Look at the OpenAjax hub model."[Open Ajax hub model for Cross-window, same-domain communications: provider sends messages from one frame to another within the same computer system, where the frames might be in different windows but have to use the same domain.] <The Open Ajax HUB would indeed address those broker/middleware functionalities thus addressing the problem of posting messages between Widgets but should be endowed by some additional registry capability.> Req. 37 We would be in favor of the local storage option Best Regards Claudio -------------------------------------------------------------------- CONFIDENTIALITY NOTICE This message and its attachments are addressed solely to the persons above and may contain confidential information. If you have received the message in error, be informed that any use of the content hereof is prohibited. Please return it immediately to the sender and delete the message. Should you have any questions, please contact us by replying to webmaster@telecomitalia.it. Thank you www.telecomitalia.it --------------------------------------------------------------------
Received on Friday, 15 February 2008 13:32:33 UTC