nsRange::DoSetRange() adds/remove its root to/from mutation observer, initializes common ancestor, registers itself to the common ancestor, unregisters itself from old common ancestor, and notifies selection listeners of selection change.
However, those runtime cost is expensive but on the other hand, a lot of callers set both start and end of the range and that causes calling DoSetRange() twice.
This patch renames Set() to SetStartAndEnd() for easier to understand the meaning and make it call DoSetRange() only once.
MozReview-Commit-ID: FRV55tuBAgg
SupportsServoStyleBackend() uses methods in nsIDocument, so it would be more
straightforward to do that in UpdateStyleBackendType().
Also, call StyloEnabled() before doing other logic so that the warning about
"no docshell" won't show up when stylo is built but disabled.
MozReview-Commit-ID: 9ZUYatPBv1r
Technically speaking, we use the new async API 'nsIURIClassifier.asyncClassifyLocalWithTables'
to replace the old sync API. However, since we cannot guarantee the async call will be done when
we neet its result, we need a sync call as a fallback in this case. This is a sub-optimal
solution and we will be investigating if there's a better solution if the sync call
is used too frequently.
MozReview-Commit-ID: L1uQ2eaYr1e
Previous design allows us calling resume/block from both front-end and back-end,
it's not easy to know who called these operations.
So move all these logic to frond-end side, it's more clear than before.
One important thing is that we should block tab before loading the content.
If we block the tab after loading, the media might not be blocked because it had
already started (that is one situation I observed from test).
The value of block state would be stored in the outer window, before media want
to start, it would check this value to know whether it can start playing or not.
---
In addition, introduce new attribute "media-blocked".
The "media-blocked" attribute indicates that whether the tab is allowed to play autoplay media.
The "activemedia-blocked" attribute indicates whether the tab has blocked the autoplay media.
MozReview-Commit-ID: FnNh3zmItxo
Previously, we cleared mCachedRootElement a bit later -- after removing *all*
of the children and calling nsNodeUtils::ContentRemoved() and UnbindFromTree on
each of them. This was problematic, because these cleanup functions can
involve calls to GetRootElement() -- and prior to this patch, any such
GetRootElement() calls would likely return the stale value in
mCachedRootElement.
Now, with this patch, we'll be clearing mCachedRootElement
sooner, so these GetRootElement() calls will return the correct current root
(which will likely be null in this case, since we're emptying the document of
children).
MozReview-Commit-ID: 8skGJyic1pC
This patch does these things:
1. it moves nsScriptElement, nsScriptLoader, ScriptSettings, nsIScriptElement
and nsIScriptLoaderObserver in dom/script
2. it renames nsScriptElement to mozilla::dom::ScriptElement
3. it renames nsScriptLaoder to mozilla::dom::ScriptLoader
This patch does these things:
1. it moves nsScriptElement, nsScriptLoader, ScriptSettings, nsIScriptElement
and nsIScriptLoaderObserver in dom/script
2. it renames nsScriptElement to mozilla::dom::ScriptElement
3. it renames nsScriptLaoder to mozilla::dom::ScriptLoader
