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378c4648e4
Implement internal pseudo element, which would be resolved as a "Implemented Pseudo Element" within style computation. This is an concrete element that would has a primary style after the style computation, but could match and style resolved like an pseudo element. Therefore, it would have a different behavior compared to how does `pseudo`s that `ServoLayoutNode` had. Where they would not have a concrete element behind it. Note that, due to the nature of these pseudo elements residing inside a UA widget, these pseudo elements would therefore not be accessible in JavaScript by default. This kind of element is required in order to implement the [form control pseudo element](https://drafts.csswg.org/css-forms-1/#pseudo-elements) like `::placeholder`, `::color-swatch`, `::field-text`, etc. See [this docs](https://hackmd.io/@ChaKweTiau/BJ3zRdLQlg) for more details of the implementation. Then, the implemented pseudo element is utilized to implement style matching for input `type=text`. Servo's side of: https://github.com/servo/stylo/pull/212 Testing: No WPT regression. --------- Signed-off-by: stevennovaryo <steven.novaryo@gmail.com>
94 lines
4.2 KiB
Rust
94 lines
4.2 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::rc::Rc;
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use euclid::default::Rect;
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use style::selector_parser::PseudoElement;
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use stylo_atoms::Atom;
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use crate::dom::bindings::root::{Dom, MutNullableDom};
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use crate::dom::customelementregistry::{
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CustomElementDefinition, CustomElementReaction, CustomElementState,
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};
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use crate::dom::domtokenlist::DOMTokenList;
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use crate::dom::elementinternals::ElementInternals;
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use crate::dom::htmlslotelement::SlottableData;
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use crate::dom::intersectionobserver::IntersectionObserverRegistration;
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use crate::dom::mutationobserver::RegisteredObserver;
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use crate::dom::node::UniqueId;
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use crate::dom::nodelist::NodeList;
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use crate::dom::range::WeakRangeVec;
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use crate::dom::shadowroot::ShadowRoot;
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use crate::dom::window::LayoutValue;
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//XXX(ferjm) Ideally merge NodeRareData and ElementRareData so they share
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// storage.
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#[derive(Default, JSTraceable, MallocSizeOf)]
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#[cfg_attr(crown, crown::unrooted_must_root_lint::must_root)]
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pub(crate) struct NodeRareData {
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/// The shadow root the node belongs to.
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/// This is None if the node is not in a shadow tree or
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/// if it is a ShadowRoot.
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pub(crate) containing_shadow_root: Option<Dom<ShadowRoot>>,
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/// Registered observers for this node.
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pub(crate) mutation_observers: Vec<RegisteredObserver>,
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/// Lazily-generated Unique Id for this node.
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pub(crate) unique_id: Option<UniqueId>,
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pub(crate) slottable_data: SlottableData,
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/// A vector of weak references to Range instances of which the start
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/// or end containers are this node. No range should ever be found
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/// twice in this vector, even if both the start and end containers
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/// are this node.
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pub(crate) ranges: WeakRangeVec,
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/// The live list of children return by .childNodes.
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pub(crate) child_list: MutNullableDom<NodeList>,
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/// Whether this node represents a certain implemented pseudo-element.
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/// An implemented pseudo-element is a real element within a UA shadow tree
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/// that will match a certain pseudo-element selector.
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/// An example of this is the element matching the `::placeholder` selector.
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#[no_trace]
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pub(crate) implemented_pseudo_element: Option<PseudoElement>,
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}
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#[derive(Default, JSTraceable, MallocSizeOf)]
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#[cfg_attr(crown, crown::unrooted_must_root_lint::must_root)]
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pub(crate) struct ElementRareData {
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/// <https://dom.spec.whatwg.org/#dom-element-shadowroot>
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/// The ShadowRoot this element is host of.
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pub(crate) shadow_root: Option<Dom<ShadowRoot>>,
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/// <https://html.spec.whatwg.org/multipage/#custom-element-reaction-queue>
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pub(crate) custom_element_reaction_queue: Vec<CustomElementReaction>,
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/// <https://dom.spec.whatwg.org/#concept-element-custom-element-definition>
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#[ignore_malloc_size_of = "Rc"]
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pub(crate) custom_element_definition: Option<Rc<CustomElementDefinition>>,
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/// <https://dom.spec.whatwg.org/#concept-element-custom-element-state>
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pub(crate) custom_element_state: CustomElementState,
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/// The "name" content attribute; not used as frequently as id, but used
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/// in named getter loops so it's worth looking up quickly when present
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#[no_trace]
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pub(crate) name_attribute: Option<Atom>,
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/// The client rect reported by layout.
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#[no_trace]
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pub(crate) client_rect: Option<LayoutValue<Rect<i32>>>,
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/// <https://html.spec.whatwg.org/multipage#elementinternals>
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pub(crate) element_internals: Option<Dom<ElementInternals>>,
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/// <https://w3c.github.io/IntersectionObserver/#element-private-slots>
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/// > Element objects have an internal [[RegisteredIntersectionObservers]] slot,
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/// > which is initialized to an empty list. This list holds IntersectionObserverRegistration records, which have:
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pub(crate) registered_intersection_observers: Vec<IntersectionObserverRegistration>,
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pub(crate) cryptographic_nonce: String,
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/// <https://drafts.csswg.org/css-shadow-parts/#element-forwarded-part-name-list>
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pub(crate) forwarded_part_names: Vec<(String, String)>,
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/// <https://drafts.csswg.org/css-shadow-parts/#dom-element-part>
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pub(crate) part: MutNullableDom<DOMTokenList>,
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}
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