Implement custom element reactions
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Initial work for implementing custom element reactions: https://html.spec.whatwg.org/multipage/custom-elements.html#custom-element-reactions
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This allows us to have ensure_data() and clear_data() functions on the TElement
trait, instead of hacking around it adding methods in random traits.
This also allows us to do some further cleanup, which I'd rather do in a
followup.
Clean up HTMLImageElement::handle_event
Area::hit_test now uses a reference instead of taking ownership
Fix trailing whitespace
Unalign => in match
Fix Area::hit_test tests to reflect updated function signature
This will go back down soonish when NonZero stablizes and we can use it in
StyleArc, which I expect will be long before the memory overhead here matters.
Correct unicode handling for text input
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Allow proprer handling of unicode sequence in text input.
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- [x] These changes fix#15819
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added keyboard shortcuts for navigation inside text box
PR to implement keyboard shortcuts per issue #12278, r? jdm
Thanks for letting me help!
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Sometimes clippy gets outdated by months, and its current support setup
means that each Servo component need to opt into it by depending on
the plugins crate manually, and not all components do that.
* Sections like `[dependencies.foo]` can be entries in a `[dependencies]`
section with the `{key = value}` syntax.
* Per-target dependencies can be expressed with more general `cfg(…)`
conditions instead of exact target triples:
https://github.com/rust-lang/cargo/pull/2328
