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Fully support <input type=color> (#36992)

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This change adds a shadow-tree widget for `<input type=color>` elements.
It also involves some changes to the way layout interacts with the DOM,
because currently all `input` and `textarea` elements are rendered as
plain text and their descendants are ignored. This obviously doesn't
work for `<input type={color, date, range, etc}>`.


![image](https://github.com/user-attachments/assets/4f16c3b0-1f79-4095-b19d-1153f5853dd5)

<details><summary>HTML used for the screenshot above</summary>

```html
<input type=color>
```

</details>



Testing: I doubt that this affects WPT tests, because the appearance and
behaviour of the widget is almost entirely unspecified.

---------

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
This commit is contained in:
Simon Wülker 2025-05-15 19:30:38 +02:00 • committed by GitHub
parent f9382fcaa0
commit b100a98e1d
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GPG key ID: B5690EEEBB952194
14 changed files with 469 additions and 100 deletions
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16
components/layout/dom_traversal.rs
View file

@ -201,17 +201,7 @@ fn traverse_children_of<'dom>(
) {
traverse_eager_pseudo_element(PseudoElement::Before, parent_element, context, handler);
let is_text_input_element = matches!(
parent_element.type_id(),
LayoutNodeType::Element(LayoutElementType::HTMLInputElement)
);
let is_textarea_element = matches!(
parent_element.type_id(),
LayoutNodeType::Element(LayoutElementType::HTMLTextAreaElement)
);
if is_text_input_element || is_textarea_element {
if parent_element.is_text_input() {
let info = NodeAndStyleInfo::new(
parent_element,
parent_element.style(context.shared_context()),
@ -229,9 +219,7 @@ fn traverse_children_of<'dom>(
} else {
handler.handle_text(&info, node_text_content);
}
}
if !is_text_input_element && !is_textarea_element {
} else {
for child in iter_child_nodes(parent_element) {
if child.is_text_node() {
let info = NodeAndStyleInfo::new(child, child.style(context.shared_context()));