Re: [Canvas] proposal for supportsContext

On Sep 11, 2012, at 1:40 AM, Robin Berjon <robin@w3.org> wrote:

> On 10/09/2012 20:11 , Dean Jackson wrote:
>> I propose adding a new method to HTMLCanvasElement:
>> 
>> interface HTMLCanvasElement : HTMLElement {
>>   boolean supportsContext(DOMString contextId, any... arguments);
>> };
>> 
>> supportsContext takes the same parameters as getContext, and simply returns
>> true if the corresponding call to getContext would have returned a valid
>> context, false otherwise.
> 
> I like it. My only concern is about why this would work when hasFeature() failed so miserably. I guess that it covers a sufficiently limited set that it will be done right.

There has been some discussion on the whatwg list (where I copied my email). Some positive, some negative.

Dean

Received on Tuesday, 11 September 2012 16:15:20 UTC