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Re: Proposal for <reco> tag

From: Olli Pettay <Olli.Pettay@helsinki.fi>
Date: Thu, 13 Oct 2011 17:29:32 +0300
Message-ID: <4E96F5CC.8040308@helsinki.fi>
To: "public-xg-htmlspeech@w3.org" <public-xg-htmlspeech@w3.org>
IIRC, Glen's proposal hasn't been discussed during conf calls.
(Not very surprisingly I like especially "The reco tag would not 
explicitly bind to input fields or other tags,
instead it would use simple javascript to achieve this." part of it.)

Should we discuss about it? It would simplify the API spec.


On 10/04/2011 08:56 PM, Glen Shires wrote:
> Some of the goals for the <reco> tag that have been discussed in this
> group are:
> 1. Make it easy for developers, at least "keep the simple things simple".
>      Even though he was discussing the <tts> tag, many of the considerations
>      that Charles listed also apply to <reco>
> http://lists.w3.org/Archives/Public/public-xg-htmlspeech/2011Jul/0027.html
>         - Helps the API be more declarative.
>         - Can control features through the standard DOM
>         - Better for standard HTML developers (the main target?)
>         - Provides a standard place to add event handlers.
>         - Allows for visual control (examples: listening indicator,
> cancel button)
>         - Can support GUI related interaction considerations: focus and
> visibility.
> 2. Enable a markup-affordance-based permissions model (click to speak) as
>      Satish describes.
> http://lists.w3.org/Archives/Public/public-xg-htmlspeech/2011Sep/0019.html.
>      Preventing click-jacking is important if this is to be used for as
> one of the
>      permissions models.  Olli and Satish have described ways to handle
> this:
> http://lists.w3.org/Archives/Public/public-xg-htmlspeech/2011Jul/0004.html
> 3.  From the User/UI perspective, the <reco> tag can show a visual indicator
>      (for example, an icon of a microphone) that:
>         - Provides an indication to the user that speech input can be
> used for these fields.
>         - By clicking on the icon, the user can simultaneously indicate
> which field he
>           wishes to speak into, and that he grants permission for audio
> to be captured.
> I believe the following proposal achieves all of these goals.
> The <reco> tag would have attributes that mirror most of the attributes,
> event-attributes and methods of the SpeechInputService. For example:
> <reco continuous="true" languages="en-AU" grammars="<builtin:datetime>"
>           onresult="processResult()"/>
> A comma-separated list of items can also be specified, for example:
> <reco continuous="true" languages="en-AU, en-GB"
>           grammars="<builtin:datetime>, http://example.com/mygrammar.xml">
> The reco tag would not explicitly bind to input fields or other tags,
> instead it would use simple javascript to achieve this.  Keeping the
> "keeping simple things simple" mindset, bindings can be achieved with
> inline javascript code that developers can easily cut-and-paste along
> with the rest of the markup.  See attached html file for examples.  (If
> you open this html file in Chrome, the examples are functional...click
> on the microphone icon to see them in action. I've emulated the reco tag
> using Chrome's current experimental syntax.  I've also attached a
> screenshot in case you don't have Chrome handy.)  The use of javascript
> also provides the flexibility to enable advanced developers to create
> complex interactions, while keeping the browser implementation and
> syntax simple.
> While these examples are not purely declarative in the strict sense,
> they achieve the spirit of this goal in that developers can easily
> specify speech input, without having to connect multiple diverse
> sections of the file together (they don't have to connect the javascript
> section of the file to the html markup section). Instead, developers can
> use the common practice of copying snippets of markup to "keep the
> simple things simple".
Received on Thursday, 13 October 2011 14:30:06 UTC

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