1882274 - Refactor how we dispatch cross-process eMouseExitFromWidget/eMouseEnterIntoWidget events

Status: NEW

(Core :: DOM: Events, task)

Description

[Edgar Chen [:edgar] (Parental leave until Oct. 09.)]

There are two place would generate and dispatch cross-process eMouseExitFromWidget/eMouseEnterIntoWidget events,

1. In EventStateManager::NotifyMouseOut()/NotifyMouseOver() when the related target is a remote frame, see https://searchfox.org/mozilla-central/rev/098f910d0593b12a42089dd8f40dcd19d1121430/dom/events/EventStateManager.cpp#4712-4734.
2. In EventStateManager::DispatchCrossProcessEvent when the remote target isn't same as the previous remote target, see https://searchfox.org/mozilla-central/rev/098f910d0593b12a42089dd8f40dcd19d1121430/dom/events/EventStateManager.cpp#1667-1713. This is basically introduced for fission to handle mouse moves from on oop iframe to another oop iframe

I think 2) is a more generic way which could also make it cover 1) in theory.

Comment 1

[Edgar Chen [:edgar] (Parental leave until Oct. 09.)]

Attachment: Bug 1882274 - Rename DispatchMouseOrPointerEvent to DispatchMouseOrPointerBoundaryEvent; r?masayuki,smaug

As it is used for dispatching mouse/pointer boundary events.

Comment 2

[Edgar Chen [:edgar] (Parental leave until Oct. 09.)]

Attachment: Bug 1882274 - Refactor how we dispatch cross-process mouse boundary events; r?masayuki,smaug

Comment 3

[Edgar Chen [:edgar] (Parental leave until Oct. 09.)]

https://treeherder.mozilla.org/jobs?repo=try&group_state=expanded&revision=a02ef8c9db2f283781bcbf3a5a20f1af0990adca

Comment 4

[Edgar Chen [:edgar] (Parental leave until Oct. 09.)]

https://treeherder.mozilla.org/jobs?repo=try&revision=fdad54c9f0b9e4dafd159b9610b7d754b467df06&group_state=expanded

Comment 5

[Edgar Chen [:edgar] (Parental leave until Oct. 09.)]

https://treeherder.mozilla.org/jobs?repo=try&group_state=expanded&revision=eb52da8463c1ce20a555d54fa50e6298654c121c

Comment 6

[Edgar Chen [:edgar] (Parental leave until Oct. 09.)]

https://treeherder.mozilla.org/jobs?repo=try&group_state=expanded&revision=85fcc0ca794eaeb5d944184ed987a68c11d01755

Comment 7

[Phabricator Automation]

Comment on attachment 9387345 [details]
Bug 1882274 - Rename DispatchMouseOrPointerEvent to DispatchMouseOrPointerBoundaryEvent; r?masayuki,smaug

Revision D202810 was moved to bug 1899400. Setting attachment 9387345 [details] to obsolete.