Re: Using HTML5 Channel Messaging with Web Intents to create persistent relations

I should add, though: the structured clone algorithm should take a transfer
map (see [1]). Chromium's algorithm doesn't have this feature at this point
yet, though. (Or maybe I'm just doing it wrong...)


[1] http://dev.w3.org/html5/spec/common-dom-interfaces.html

On Wed, Feb 22, 2012 at 3:02 PM, Greg Billock <gbillock@google.com> wrote:

> No. Ports aren't clone-able. :-(
>
>
> On Wed, Feb 22, 2012 at 11:32 AM, James Hawkins <jhawkins@google.com>wrote:
>
>> Greg, this works in the current implementation in Chrome, right?
>>
>> James
>>
>>
>>
>> On Wed, Feb 22, 2012 at 11:02 AM, Paul Kinlan <paulkinlan@google.com>wrote:
>>
>>> Hi,
>>>
>>> At the moment, this is one of the things that doesn't work in the shim.
>>>  Because the shim uses a lot of hacks to get it working in IE and FF I have
>>> had to limit some functionality.  Most of this is due to the fact that data
>>> signaling is currently done via localStorage events and you can't serialize
>>> a MessagePort to a string.
>>>
>>> P
>>>
>>>
>>> On Wed, Feb 22, 2012 at 5:14 PM, Nilsson, Claes1 <
>>> Claes1.Nilsson@sonyericsson.com> wrote:
>>>
>>>> Hi, ****
>>>>
>>>> ** **
>>>>
>>>> I wanted to text creating a message channel between a Client page and a
>>>> Service page when running in Chrome and using the JS shim from
>>>> webintents.org but I didn’t get it working. I a probably doing
>>>> something stupid…****
>>>>
>>>> ** **
>>>>
>>>> The code in the Client page is:****
>>>>
>>>> ** **
>>>>
>>>>          var channel = new MessageChannel();****
>>>>
>>>>     ****
>>>>
>>>>           var intent = new Intent();****
>>>>
>>>>           intent.action = "http://webintents.org/view";****
>>>>
>>>>           intent.type = "video/*";****
>>>>
>>>>           intent.data = channel.port2;****
>>>>
>>>> ** **
>>>>
>>>>           window.navigator.startActivity(intent, function (intentData) {
>>>> ****
>>>>
>>>>               alert (intentData);****
>>>>
>>>>           });     ****
>>>>
>>>> ** **
>>>>
>>>>          channel.port1.onmessage = function (evt) {****
>>>>
>>>>                 alert (evt.data);****
>>>>
>>>>           };  ****
>>>>
>>>> ** **
>>>>
>>>> The Service page code is:****
>>>>
>>>> ** **
>>>>
>>>>      If (!!window.intent) {****
>>>>
>>>>      ****
>>>>
>>>>           var port = intent.data;****
>>>>
>>>>        ****
>>>>
>>>>           if (port) {****
>>>>
>>>>              port.start();****
>>>>
>>>>              port.postMessage("Port received");        ****
>>>>
>>>>           }, false);****
>>>>
>>>>         ****
>>>>
>>>>       }****
>>>>
>>>> ** **
>>>>
>>>> However, Chrome does not recognize port as a Message port object.
>>>> What’s wrong. Sorry for not being very experienced with JavaScript.****
>>>>
>>>> ** **
>>>>
>>>> Claes ****
>>>>
>>>> ** **
>>>>
>>>> [image: cid:3333625383_1036728]
>>>>
>>>> *Claes Nilsson M.Sc.E.E*
>>>> Master Engineer, Research
>>>> Technology Research - Advanced Application Lab
>>>> *
>>>> Sony Ericsson Mobile Communications*
>>>>  Phone:  +46 10 80 15178
>>>> Mobile: +46 705 56 68 78
>>>> Switchboard: +46 10 80 00000
>>>> E-Mail:* **mailto:claes1.nilsson@sonyericsson.com*<claes1.nilsson@sonyericsson.com>
>>>> * *
>>>> Visiting Address; Nya Vattentornet
>>>> SE-221 88 LUND,
>>>> Sweden ****
>>>>
>>>> *Disclaimer:
>>>> *The information in this e-mail is confidential and may be legally
>>>> privileged. It is intended solely for the named recipient(s) and access to
>>>> this e-mail by anyone else is unauthorized. The views are those of the
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>>>> recipient, please inform the sender by replying this transmission and
>>>> delete the e-mail and any copies of it without disclosing it.****
>>>>
>>>>  ****
>>>>
>>>> ** **
>>>>
>>>
>>>
>>>
>>> --
>>> Paul Kinlan
>>> Developer Advocate @ Google for Chrome and HTML5
>>> G+: http://plus.ly/paul.kinlan
>>> t: +447730517944
>>> tw: @Paul_Kinlan
>>> LinkedIn: http://uk.linkedin.com/in/paulkinlan
>>> Blog: http://paul.kinlan.me
>>> Skype: paul.kinlan
>>>
>>>
>>
>