Index the session past correctly when discarding.
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Oops, indexed from the wrong end when discarding documents in #14312.
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Implement browsing context discarding
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Implement browsing context discarding (https://html.spec.whatwg.org/multipage/browsers.html#discard-a-document).
* When a pipeline is closed, inform the script thread whether the browsing context is to be discarded.
* In script threads, synchronously discard any similar-origin documents and browsing contexts.
* When a browsing context is discarded, it loses the reference to the active document, but the window keeps it, so we need to move the `Document` pointer from `BrowsingContext` to `Window`.
* Fix the webIDL for Window to make parent and top optional (the spec says they can return null when the browsing context is discarded).
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- [X] These changes fix#14411
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Rename ScriptChan in constellation to EventLoop
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We currently have a type `ScriptChan` in the constellation, which is named after its implementation rather than its semantics. In the spec, the nearest concept seems to be event loop https://html.spec.whatwg.org/multipage/#event-loop.
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Reimplement scrolling to fragments
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This reimplemntation of the feature uses ScrollRootIds to scroll
particular scrollable areas of the page.
Fixes#13736.
Fixes#10753.
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Script thread with no root document
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This PR removes the single root document from the script thread, and replaces it by a lookup table from `PipelineId`s to `Document`s. This is needed if we're going to share script threads, as per #633.
The last commit is the one that matters, the ones before are #13646.
cc @jdm @Ms2ger @ConnorGBrewster
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Script lookup iframes by frameid
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Lookup iframes by `FrameId` rather than `PipelineId`. This should make lookup much more reliable, since the frame id doesn't change.
cc @ConnorGBrewster @aneeshusa
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Tidying up constellation.
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Some miscellaneous tidying up to the constellation:
- improve the efficiency of testing emptiness of the joint session past and future,
- add some helpful debug logs,
- make the if-statement for pipeline traversal easier to read.
r? @ConnorGBrewster
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Layers were a feature of the legacy drawing path. If we re-add them at
some point, it probably makes more sense to make them a product of
display list inspection.
This change also remove a bunch of dead painting code.
This removes paint threads, rust-layers dependency, and changes
optional webrender types to be required.
The use_webrender option has been removed, however I've left
the "-w" command line option in place so that wpt
runner can continue to pass that. Once it's removed from there
we can also remove the -w option.
Once this stage is complete, it should be fine to change the
display list building code to generate webrender display
lists directly and avoid the conversion step.
Send touch events to root pipeline, and allow forwarding to iframes.
Instead of letting the compositor try to find the correct scroll
layer for a touch event, switch touch events to work the same way
that mouse events do.
Touch events are now dispatched to the root pipeline, and then
forwarded to child iframes as required.
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Instead of letting the compositor try to find the correct scroll
layer for a touch event, switch touch events to work the same way
that mouse events do.
Touch events are now dispatched to the root pipeline, and then
forwarded to child iframes as required.
Two things changed, on one hand, avoid a dumb if chain that could be more
idiomatically written with a match expression, and also avoiding use map() to
change state.
In general I'm pretty surprised for our lack of error reporting in this
critical code, but that's not the purpose of this PR.
Implement postMessage for ServiceWorkers
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Fixes#12773
r? @jdm
Changes:
* Implements `postMessage` on `ServiceWorker` object.
* Removes unused channels from sw and their scopes.
* Fixes a crash when calling `scope.script_chan()` in sw-scopes event handling.
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