1958942 - Refactor how we schedule and suppress rendering phases

Status: RESOLVED FIXED

(Core :: CSS Parsing and Computation, enhancement)

Comment 1

[Emilio Cobos Álvarez [:emilio]]

Attachment: Bug 1958942 - Refactor how we schedule and suppress rendering phases. r=smaug

This starts some of the needed refactoring towards having proper
rendering suppression, and in general aligning better with the HTML
spec's "update the rendering" section.

Behavior changes should be minimal:

• We suppress rendering until the pres shell is initialized rather than
  just created. This matches how autofocus already works and in general
  we don't want to forcibly flush an uninitialized presshell.

• We handle view transition suppression more correctly in some (but not
  all) phases.

• Some of the steps do no longer recurse manually nor check the view
  transitions suppression, as that's done centrally.

• mAutoFocusFlushDocuments isn't tracked separately.

Follow-up work will involve changing most of the "pending resize/scroll/etc"
events to be per-document as per spec, and also implement suppression for
painting.

Comment 2

[Emilio Cobos Álvarez [:emilio]]

Attachment: Bug 1958942 - Stop tracking some observers. r=smaug

No behavior change as these all map to an existing RenderingPhase.

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/0b9e529a5541
Refactor how we schedule and suppress rendering phases. r=smaug

Comment 4

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/9dd7749b7f73
Stop tracking some observers. r=smaug

Comment 5

[Cristian Tuns]

https://hg.mozilla.org/mozilla-central/rev/0b9e529a5541
https://hg.mozilla.org/mozilla-central/rev/9dd7749b7f73