It currently works by constructing from null (which will throw a runtime
error if there are non-defaultable members).
This changes it so that we no longer need a JSContext to construct this,
so it can be safely constructed. In the case of non-defaultable members,
this method simply does not exist.
Store vertex attribs data in DOM and optimise GetVertexAttrib
This is not an extremely useful change on its own but those things need to be stored on the DOM side to implement some draw checks anyway.
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DOM structs embed their parent type as their first field. This
introduces a `.parent()` method to the DOM struct that returns its first
field, and codegens a type assert that ensures that `.parent()` returns
the parent struct.
This generates:
On `#[dom_struct]`:
```rust
impl HasParent for Type {
type Parent = ParentType;
fn as_parent(&self) -> ParentType {
&self.first_field
}
}
```
In the codegen files:
```rust
impl Type {
fn __assert_parent_type(&self) {
let _: &ParentType = self.as_parent();
}
}
````
Implement support for Element.toggleAttribute
Copy implementation following from [Firefox implementation](https://bugzilla.mozilla.org/show_bug.cgi?id=1469592) of soon to be standardised [Element.toggleAttribute](https://github.com/whatwg/dom/pull/656). [Other implementers agreed to ship](https://github.com/whatwg/dom/issues/461)
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Allow supported window attributes to be replacable.
As seen in https://github.com/servo/servo/pull/21045 some Window attributes don't support JavaScript from being able to shadow and replace their values.
This PR adds all other attributes I could find that are supported by servo to be replaceable.
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textarea minLength/maxLength
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textarea minLength/maxLength
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Issue #20593: Implement proper checks in WebGLRenderingContext's getFramebufferAttachmentParameter().
Add missing input checks.
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add TextLength
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add TextLength in HTMLTextAreaElement
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Implement window.length DOM attribute.
Implements the `window.length` DOM attribute for enumerating frames on the document.
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Support cloning steps for textarea/input
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Implement read methods on FileReaderSync
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Implemented the read methods on the FileReaderSync struct according to https://w3c.github.io/FileAPI/#dfn-FileReaderSync
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- [x] These changes fix#15114
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improve spec compliance of window.close
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Improve the spec compliance of https://html.spec.whatwg.org/multipage/window-object.html#dom-window-close, mainly by implementing the steps related to [closing a browsing context](https://html.spec.whatwg.org/multipage/window-object.html#close-a-browsing-context)
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