1021384 - (vertical-homescreen) Scrollbar never disappears from homescreen when locking device with it visible

Status: RESOLVED FIXED

(Core :: Panning and Zooming, defect)

Description

[Peter La]

If you scroll on the homescreen, immediately lock the device before the scrollbar disappears, and then unlock the device, the scrollbar will remain on screen indefinitely.

Expected:
The scrollbar should fade from view when the user is not scrolling.

Comment 1

[Cristian Rodriguez (:crdlc)]

I think that it is a Gecko issue because I can see the same issue in Settings for instance or any app with scrollbar

Comment 2

[Kartikaya Gupta (email:[e-mail])]

The TransformEnd notification probably never gets sent to the GeckoContentController upon destruction of the APZ, and so it never calls ScrollbarActivityStopped() on the scrollframe. Should be an easy fix.

Comment 3

[Kartikaya Gupta (email:[e-mail])]

Attachment: Patch

Comment 4

[Kartikaya Gupta (email:[e-mail])]

Comment on attachment 8436526 [details] [diff] [review]
Patch

Review of attachment 8436526 [details] [diff] [review]:
-----------------------------------------------------------------

As part of clearing the animation the state is reset back to NONE, which triggers the TransformEnd notification to TabChild.

Comment 5

[Kartikaya Gupta (email:[e-mail])]

gtests pass: https://tbpl.mozilla.org/?tree=Try&rev=ec1ba29297d9

Comment 6

[Kartikaya Gupta (email:[e-mail])]

https://hg.mozilla.org/integration/mozilla-inbound/rev/c66224db3600

Comment 7

[Ryan VanderMeulen [:RyanVM]]

https://hg.mozilla.org/mozilla-central/rev/c66224db3600

Comment 8

[Kevin Grandon :kgrandon]

Mass modify - set status-b2g-v2.0 fixed for fixed bugs under vertical homescreen dependency tree.