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Re: [widgets]

From: Scott Wilson <scott.bradley.wilson@gmail.com>
Date: Mon, 23 May 2011 09:18:13 +0100
Cc: Marcos Caceres <marcosscaceres@gmail.com>, public-webapps@w3.org
Message-Id: <D726CE57-DFD0-4C53-850C-5E67E119204A@gmail.com>
To: Doug Schepers <schepers@w3.org>
Within the education vertical, the IMS consortium created a basic "launch" protocol for widget-like applications including user information and custom parameters [1] and we created a shim for using it with Apache Wookie [2]. So certainly a tractable area; If anything the IMS spec could work with far fewer parameters.

That said I don't think it would be difficult to construct a simple launch process for the STB that mapped parameters like programme/channel context information onto one of Preferences or Feature Parameters.

[1] http://www.imsglobal.org/lti/blti/bltiv1p0/ltiBLTIimgv1p0.html
[2] http://code.google.com/p/basiclti4wookie/

On 23 May 2011, at 00:51, Doug Schepers wrote:

> Hi, Richard-
> 
> Depending on your timeline, this could be a v2 feature...
> 
> Any interest in following that up?
> 
> Regards-
> -Doug
> 
> Marcos Caceres wrote (on 5/20/11 3:47 PM):
>> On 5/20/11 5:19 PM, Richard Felton wrote:
>>> Hi,
>>> 
>>> Hopefully this is the right place to ask this question.
>>> 
>>> I'm looking at the possibility of using W3C widgets as a web-app
>>> mechanism on an IP connected set-top box. I've had a look through the
>>> specifications available and I can't see a way to pass launch parameters
>>> to a widget. Is this possible or has it been ruled out for good reason?
>>> 
>>> For example, if I want to write a branded media player application (in a
>>> widget) it'd be useful if I could allow the set-top box user interface
>>> to pass the identifier of the programme to be played into the widget.
>>> Effectively I'm looking for a way for a widget to specify something
>>> similar to command line options so that the launching entity can control
>>> the state the widget starts up in.
>> 
>> There is no standardized means to do this today, I'm afraid. However,
>> you could either pre-generate the widget to contain such information, or
>> acquire it from from the set top box through a http request. Another
>> means might be to create a proprietary <feature>:
>> 
>> <widget ...>
>> <feature name="tv:startup">
>> <param name="custom_config" value="{'a': 'b', 'c': 'd'}">
>> <feature>
>> </widget>
>> 
> 
Received on Monday, 23 May 2011 08:18:45 GMT

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