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1e471b9b41
This is part of the future work of implementing LazyDOMString as outlined in issue #39479. We use str() method or direct implementations on DOMString for these methods. We also change some types. This is independent of https://github.com/servo/servo/pull/39480 Signed-off-by: Narfinger Narfinger@users.noreply.github.com Testing: This is essentially just renaming a method and a type and should not change functionality. Signed-off-by: Narfinger <Narfinger@users.noreply.github.com>
116 lines
4.4 KiB
Rust
116 lines
4.4 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 cssparser::{Parser, ParserInput, serialize_identifier};
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use dom_struct::dom_struct;
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use layout_api::{PropertyRegistration, RegisterPropertyError};
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use script_bindings::codegen::GenericBindings::CSSBinding::PropertyDefinition;
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use style::context::QuirksMode;
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use style::parser::ParserContext;
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use style::stylesheets::supports_rule::{Declaration, parse_condition_or_declaration};
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use style::stylesheets::{CssRuleType, Origin, UrlExtraData};
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use style_traits::ParsingMode;
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use crate::dom::bindings::codegen::Bindings::CSSBinding::CSSMethods;
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use crate::dom::bindings::codegen::Bindings::WindowBinding::Window_Binding::WindowMethods;
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use crate::dom::bindings::error::{Error, Fallible};
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use crate::dom::bindings::reflector::Reflector;
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use crate::dom::bindings::root::DomRoot;
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use crate::dom::bindings::str::DOMString;
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use crate::dom::window::Window;
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use crate::dom::worklet::Worklet;
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#[dom_struct]
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#[allow(clippy::upper_case_acronyms)]
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pub(crate) struct CSS {
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reflector_: Reflector,
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}
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impl CSSMethods<crate::DomTypeHolder> for CSS {
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/// <https://drafts.csswg.org/cssom/#the-css.escape()-method>
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fn Escape(_: &Window, ident: DOMString) -> Fallible<DOMString> {
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let mut escaped = String::new();
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serialize_identifier(ident.str(), &mut escaped).unwrap();
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Ok(DOMString::from(escaped))
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}
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/// <https://drafts.csswg.org/css-conditional/#dom-css-supports>
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fn Supports(win: &Window, property: DOMString, value: DOMString) -> bool {
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let mut decl = String::new();
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serialize_identifier(property.str(), &mut decl).unwrap();
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decl.push_str(": ");
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decl.push_str(value.str());
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let decl = Declaration(decl);
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let url_data = UrlExtraData(win.Document().url().get_arc());
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let context = ParserContext::new(
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Origin::Author,
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&url_data,
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Some(CssRuleType::Style),
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ParsingMode::DEFAULT,
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QuirksMode::NoQuirks,
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/* namespaces = */ Default::default(),
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None,
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None,
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);
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decl.eval(&context)
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}
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/// <https://drafts.csswg.org/css-conditional/#dom-css-supports>
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fn Supports_(win: &Window, condition: DOMString) -> bool {
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let mut input = ParserInput::new(condition.str());
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let mut input = Parser::new(&mut input);
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let cond = match parse_condition_or_declaration(&mut input) {
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Ok(c) => c,
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Err(..) => return false,
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};
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let url_data = UrlExtraData(win.Document().url().get_arc());
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let context = ParserContext::new(
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Origin::Author,
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&url_data,
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Some(CssRuleType::Style),
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ParsingMode::DEFAULT,
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QuirksMode::NoQuirks,
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/* namespaces = */ Default::default(),
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None,
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None,
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);
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cond.eval(&context)
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}
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/// <https://drafts.css-houdini.org/css-paint-api-1/#paint-worklet>
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fn PaintWorklet(win: &Window) -> DomRoot<Worklet> {
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win.paint_worklet()
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}
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/// <https://drafts.css-houdini.org/css-properties-values-api/#the-registerproperty-function>
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fn RegisterProperty(window: &Window, property_definition: &PropertyDefinition) -> Fallible<()> {
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let property_registration = PropertyRegistration {
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name: property_definition.name.str().to_owned(),
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inherits: property_definition.inherits,
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url_data: UrlExtraData(window.get_url().get_arc()),
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initial_value: property_definition
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.initialValue
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.as_ref()
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.map(|value| value.str().to_owned()),
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syntax: property_definition.syntax.str().to_owned(),
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};
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window
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.layout_mut()
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.register_custom_property(property_registration)
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.map_err(|error| match error {
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RegisterPropertyError::InvalidName |
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RegisterPropertyError::InvalidSyntax |
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RegisterPropertyError::InvalidInitialValue |
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RegisterPropertyError::NoInitialValue |
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RegisterPropertyError::InitialValueNotComputationallyIndependent => {
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Error::Syntax(None)
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},
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RegisterPropertyError::AlreadyRegistered => Error::InvalidModification,
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})?;
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Ok(())
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}
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}
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