Prevent crashing when a link tag has two or more in-flight requests (fix for issue #15101)
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The `HTMLLinkElement::set_stylesheet` function now checks whether there already is a stylesheet, and if there is, calls `Document::invalidate_stylesheets` after modifying `self.stylesheet`.
This PR also includes a minimal WPT that causes the panic.
This is fundamentally a timing issue, so while this fix prevents the crash, it does not fix the underlying issue. Making a <link> element send a second request before the first can finish and then getting the two stylesheet responses out-of-order will apply the wrong stylesheet, as demonstrated with https://gist.github.com/SwagColoredKitteh/2c24c7fac635445042eda4a30e10420e.
r? @emilio
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Support origins in CSSOM stylesheets
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I still need to pass the origin clean flag to constructors. `style::stylesheets::Stylesheet` has an origin field but I don't think that's relevant.
I can get href in htmllinkelement.rs like this:
```rust
let element = self.upcast::<Element>();
let href = element.get_string_attribute(&local_name!("href"));
```
But I'm not sure how to proceed after here.
@Manishearth any opinions?
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Remove usage of phf_macros.
It’s a compiler plugin that uses unstable compiler APIs that are not on a path to stabilization.
With this changes, there is one less thing that might break when we update the compiler. For example: https://github.com/sfackler/rust-phf/pull/101
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Fix#14497: WeakMediaQueryListVec assumes its contents are still alive
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First time contributor here. Noticed this issue is easily solved, so I did it. I am very unsure about how things work here: Is a test needed? What should it look like? Should the "unwrap" be avoided (making bigger changes to the code)?
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Per https://html.spec.whatwg.org/multipage/embedded-content.html#dom-img-width:
The IDL attributes width and height must return the rendered width and
height of the image, in CSS pixels, if the image is being rendered, and is
being rendered to a visual medium; or else the density-corrected intrinsic
width and height of the image, in CSS pixels, if the image has intrinsic
dimensions and is available but not being rendered to a visual medium; or
else 0, if the image is not available or does not have intrinsic dimensions.
Use Box<CalcLengthOrPercentage> in specified values to avoid bloating inline sizes
For #15061
CalcLOP is a large struct, and gets used quite often. While #15063 reduces its size a bit,
it will still be much larger than any of the other variants in the `specified::Length*` types,
so it will still bloat sizes, especially for specified values that contain many lengths.
This change boxes it in the length types, so that it just takes one word.
r? @heycam
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