Re: ARIA: proposed changes to the class inheritance hierarchy for button, checkbox, radio, and menuitemradio.

On 7 Dec 2008, at 11:44 PM, James Craig wrote:

>
> I'd like to propose a series of changes to the ARIA class  
> inheritance hierarchy for button, checkbox, radio, and  
> menuitemradio. They are somewhat interdependent, so I'm proposing  
> them as a set of changes rather than individual issues.
>
> 1. BUTTON should inherit from INPUT, not WIDGET.
>
> 2. CHECKBOX should inherit from BUTTON, not INPUT. A checkbox is a  
> type of toggle button.)
>
> 3. RADIO inherits from CHECKBOX, and RADIOGROUP inherits from  
> SELECT, so RADIO should inherit from both CHECKBOX and OPTION.
>
> 4. RADIO inherits from CHECKBOX, so MENUITEMRADIO should inherit  
> from MENUITEMCHECKBOX and RADIO. It currently inherits from  
> MENUITEM and RADIO.
>

I understand James's revised proposal to be

>
> 1. BUTTON should inherit from INPUT, not WIDGET.
>
> 2. RADIO inherits from CHECKBOX, and RADIOGROUP inherits from  
> SELECT, so RADIO should inherit from both CHECKBOX and OPTION.
>
> 3. RADIO inherits from CHECKBOX, so MENUITEMRADIO should inherit  
> from MENUITEMCHECKBOX and RADIO. It currently inherits from  
> MENUITEM and RADIO.
>

I agree with those three.

Al

PS: relates to ISSUE-90