mirror of
https://github.com/servo/servo
synced 2026-04-26 17:45:19 +02:00
a1c8896eda
A lot (and I mean, really a lot) depends on these constructors. Therefore, this is the one spaghetti ball that I could extract and convert all `can_gc` to `cx`. There are some new introductions of `temp_cx` in the callbacks of the servo parser, but we already had some in other callbacks. Part of #40600 Testing: It compiles Signed-off-by: Tim van der Lippe <tvanderlippe@gmail.com>
78 lines
2.7 KiB
Rust
78 lines
2.7 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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use std::cell::Ref;
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use js::context::JSContext;
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use script_bindings::codegen::GenericBindings::CharacterDataBinding::CharacterDataMethods;
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use script_bindings::root::Dom;
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use crate::dom::bindings::cell::DomRefCell;
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use crate::dom::bindings::inheritance::Castable;
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use crate::dom::characterdata::CharacterData;
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use crate::dom::element::Element;
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use crate::dom::htmlinputelement::HTMLInputElement;
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use crate::dom::node::{Node, NodeTraits};
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use crate::dom::text::Text;
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#[derive(Default, JSTraceable, MallocSizeOf, PartialEq)]
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#[cfg_attr(crown, crown::unrooted_must_root_lint::must_root)]
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pub(crate) struct TextValueWidget {
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shadow_tree: DomRefCell<Option<TextValueShadowTree>>,
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}
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impl TextValueWidget {
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/// Get the shadow tree for this [`HTMLInputElement`], if it is created and valid, otherwise
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/// recreate the shadow tree and return it.
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fn get_or_create_shadow_tree(
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&self,
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cx: &mut JSContext,
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input: &HTMLInputElement,
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) -> Ref<'_, TextValueShadowTree> {
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{
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if let Ok(shadow_tree) = Ref::filter_map(self.shadow_tree.borrow(), |shadow_tree| {
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shadow_tree.as_ref()
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}) {
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return shadow_tree;
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}
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}
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let element = input.upcast::<Element>();
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let shadow_root = element
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.shadow_root()
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.unwrap_or_else(|| element.attach_ua_shadow_root(cx, true));
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let shadow_root = shadow_root.upcast();
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*self.shadow_tree.borrow_mut() = Some(TextValueShadowTree::new(cx, shadow_root));
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self.get_or_create_shadow_tree(cx, input)
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}
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pub(crate) fn update_shadow_tree(&self, cx: &mut JSContext, input: &HTMLInputElement) {
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self.get_or_create_shadow_tree(cx, input).update(input)
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}
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}
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#[derive(Clone, JSTraceable, MallocSizeOf, PartialEq)]
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#[cfg_attr(crown, crown::unrooted_must_root_lint::must_root)]
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struct TextValueShadowTree {
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value: Dom<Text>,
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}
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impl TextValueShadowTree {
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fn new(cx: &mut JSContext, shadow_root: &Node) -> Self {
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let value = Text::new(cx, Default::default(), &shadow_root.owner_document());
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Node::replace_all(cx, Some(value.upcast()), shadow_root);
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Self {
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value: value.as_traced(),
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}
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}
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fn update(&self, input_element: &HTMLInputElement) {
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let character_data = self.value.upcast::<CharacterData>();
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let value = input_element.value_for_shadow_dom();
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if character_data.Data() != value {
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character_data.SetData(value);
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}
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}
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}
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