Return Option for Window's layout channel
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`Window::layout_chan()` now returns an `Option<Sender<Msg>>`, returning `None` if the window is dead.
FIX#26969FIX#26429FIX#21208FIX#19092FIX#22559FIX#22584FIX#22652
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This is my first contribution, I'm trying to figure things out!
This fix passes the test case shown in #23053, however I don't know what the behavior should be in `Document` and `ScriptThread` if `Window::is_alive()` is false : simply ignore it, don't do anything ? Or is this something that should not happen now that we return false in `Window::force_reflow()` ?
I'm not sure about the directory where the test case should go, any advice?
Cancel animations for nodes which are removed from the DOM
This includes nodes which are being reparented.
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Implement GPUSwapChain and GPUCanvasContext and interface with Webrender
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r?@kvark
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Instead of having `ScriptThread` handle rooting nodes, do this in
`Animations`. This makes it easier to know when it is appropriate to
root and unroot nodes instead of relying on a certain order of events.
This also allows reducing quite a bit the amount of unsafe code.
This event is triggered when an animation iterates. This change also
moves iteration out of style calculation to an "update animations" which
is the next part of having animation event handling match the HTML spec.
check http_state in determine_request_referrer
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Check https status inside determine_request_referrer.
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Add creator URL, creator base URL and creator origin to browsing context
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- [x] These changes fix#24944 and fix (partially) #26287
- [x] There are tests for these changes
This is preparation for sharing this code with layout_2020 and
implementing selective off-the-main-thread animations.
We still look for nodes not in the flow tree in the layout thread.
This is a small step toward fixing #19242. The main idea is that the
clock for animations should advance as the event loop ticks. We
accomplish this by moving the clock from layout and naming it the
"animation timeline" which is the spec language. This should fix
flakiness with animations and transitions tests where a reflow could
move animations forward while script was running.
This change also starts to break out transition and animation events
into their own data structure, because it's quite likely that the next
step in fixing #19242 is to no longer send these events through a
channel.
There is no need to set the dirty descendants flag unsafely from the layout side
for elements with pending restyles, we can do that on the DOM side when draining
the restyles from the Document.
More layout cleanups from the introduction of a lifetime in LayoutDom<T>
What can I say, the follow-up fixes just kept coming to my door one by one, I couldn't just tell them to go away.
make Document.getElementsByName a live collection
Another new case for NodeList; this and the labels live collection in #25424 are in the pipeline simultaneously, so one of them will need a merge resolution when the other one lands.
Iterating over many same-named elements is potentially slower than it has to be, since getting the nth element from the live view always starts from the start of the tree.
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Selection DOM interface (but not actual UI selections)
This is work towards #7492.
I put new tests in the mozilla-specific directory rather than the main tree because I'm not sure how upstreamable they are; I'd like opinions on that point.
This adds a new exposed interface, which I understand from tests/mozilla/interfaces.html is something requiring specific approval from someone allowed to give that approval.
Things that aren't done here:
- The spec doesn't describe what selection/script-and-style-elements.html wants, and what it wants seems to require some sort of layout query.
- Actual UI interactions are not present at all; selection.rs has a few TODOs saying which methods I believe the eventual UI code should call for what actions, but there are a lot of fine points here that I don't know about.
- I haven't touched Node; you can ask if a node's in the Selection's Range the same way you'd ask about any other Range, but there's not a faster path just for selection layout.
