[wp-hackers] CSS backwards compatibility in Admin

[Jason Webster]

IE 6 doesn't support attribute selectors in CSS, so in order to style a 
button, you need to assign a class to it.

Stephen Rider wrote:
> Huh.  That's pretty funny actually.  I think the change then is that 
> the distinction between buttons is much more emphasized in 2.7 than 
> 2.6.  I never noticed the classes, and going through the large number 
> of plugins I have installed, it appears that none of the other plugin 
> authors noticed it either!  :)
>
> Am I reading your response right that there is a class simply called 
> "button"?  isn't a "submit" control already just a button?  Or are you 
> referring to a "just plain submit"?
>
> Stephen
>
> On Nov 5, 2008, at 11:07 AM, Andrew Ozz wrote:
>> Actually there are 3 classes for buttons now:
>>
>> .button has feint gray gradient (very feint, may need to make it a 
>> little stronger),
>> .button-primary with blue-green gradient meant for emphases, one or 
>> two per page, usually the "main" button,
>> .button-secondary has the same gradient like .button but different 
>> border/highlighting meant for use in areas with background color.
>>
>> All existing .button and .button-secondary from 2.5/2.6 are still 
>> used at the same places. The new .button-primary can be used to 
>> emphasis the main action on a page, like the "Publish" button on the 
>> write page, or to draw attention to certain action.
>
>> Stephen Rider wrote:
>>> I've noted that in the Admin for 2.7, the submit buttons on Admin 
>>> pages now have a class="button-primary" assigned.
>>> The visual difference is that with this class, the button is a 
>>> medium blue color, and without it (presumably for "secondary" 
>>> buttons) the color is a faded gray.
>>> For the sake of both a) cleaner code, and b) backwards compatibility 
>>> with plugins, shouldn't this be reversed?
>>> That is, buttons should be blue by default, and IF there is a 
>>> class="button-secondary" then it is the faded gray?  Surely the 
>>> secondary buttons are the special case here, as most forms have a 
>>> single, primary, button.
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