664757 - Trackpad taps often don't result in visible feedback (add minimum duration for :active)

Status: NEW

(Core :: DOM: UI Events & Focus Handling, defect)

Description

[Jesse Ruderman]

Attachment: testcase

1. Enable tap-to-click (Mac system preferences > Trackpad > Tap to Click).
2. Load the testcase.
3. Tap the button.

Result: no blue flash (or nearly-imperceptibly short blue flash).

Expected: a solid blue flash, so I know Firefox accepted the tap and it landed on the button.

See also bug 376119.

Comment 1

[Olli Pettay [:smaug][[e-mail]]]

David, could we add some timer which clear active state, or
can you see some problem in such behavior?
If active state moves to some other place, the old active should be
cleared immediately.

It might be nice if we could have some animation, but that is hard, I assume.

Comment 2

[Olli Pettay [:smaug][[e-mail]]]

Though, this could be OSX level thing.

Comment 3

[Jesse Ruderman]

It wouldn't make sense for the OS to delay the mouseup, because that would delay the action.