implement structured clone callbacks - support Blob cloning
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1. Implement stubs for structured clone callbacks.
2. Support Blob cloning.
Partial implementation of https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Structured_clone_algorithm
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- [ ] These changes fix#15021 (github issue number if applicable).
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removing mutHeapJs references
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- [x] These changes fix#15316
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In support of this goal, the layout thread collects information about
CSS images that are missing image data and hands it off to the script
thread after layout completes. The script thread stores a list of
nodes that will need to be reflowed after the associated network
request is complete. The script thread ensures that the nodes are
not GCed while a request is ongoing, which the layout thread is
incapable of guaranteeing.
The image cache's API has also been redesigned in support of this
work. No network requests are made by the new image cache, since it
does not possess the document-specific information necessary to
initiate them. Instead, there is now a single, synchronous
query operation that optionally reserves a slot when a cache
entry for a URL cannot be found. This reserved slot is then
the responsibility of the queryer to populate with the contents
of the network response for the URL once it is complete. Any
subsequent queries for the same URL will be informed that the
response is pending until that occurs.
The changes to layout also remove the synchronous image loading
code path, which means that reftests now test the same code
that non-test binaries execute. The decision to take a screenshot
now considers whether there are any outstanding image
requests for layout in order to avoid intermittent failures in
reftests that use CSS images.
Eliminate a mem::transmute in CodeGen
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Eliminate a mem::transmute in CodeGen by changing the find_enum_string_index function to take a slice of pairs and return an enum value.
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Remove ArrayBufferViewContents trait
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Removed ArrayBufferViewContents trait and dependent uses.
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- [ x ] These changes fix#15551
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For each derived DomObject impl, we also generate a dummy trait
ShouldNotImplDomObject that is implemented for all T: DomObject.
We then try to implement it for each field type except the first one.
If compilation succeed, this means that field type doesn't implement
DomObject itself otherwise it would break coherence rules.
error[E0119]: conflicting implementations of trait `dom::xmlhttprequest::_IMPL_DOMOBJECT_FOR_XMLHttpRequest::ShouldNotImplDomObject` for type `((), SomeFieldTypeThatShouldNotImplementDomObject)`:
--> /Users/nox/src/servo/components/script/dom/xmlhttprequest.rs:120:1
|
120 | #[dom_struct]
| ^^^^^^^^^^^^^
| |
| first implementation here
| conflicting implementation for `((), SomeFieldTypeThatShouldNotImplementDomObject)`
Permissions API and WebBluetooth integration
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This implements the [Permissions API](https://w3c.github.io/permissions/) spec.
Also includes the WebBluetooth related implementation for this.
There are some know issues:
- [ ] If the descriptor name is invalid [this](https://gist.github.com/dati91/7a6a0a563d90f49ba5a351e48c5b626b#file-permissionstatusbindings-rs-L323) will throw an error, rather that return it and we could handle it.
- [x] The [environment settings object](https://html.spec.whatwg.org/multipage/webappapis.html#environment-settings-object) is not implemented in servo and the spec rely on it.
- [x] There is a popup in the implementation which prevent us to add wpt test, we should figure out a way to make it work
- [ ] The allowedDevice's allowed_services attribute is not used in our implementation, because we store these in the lower level, not in the dom side.
- [ ] We think the bluetooth revoke function will need some more work, but the problem is the spec needs clarifications on that part.
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