mirror of
https://github.com/servo/servo.git
synced 2025-06-06 16:45:39 +00:00
114 lines
4 KiB
Rust
114 lines
4 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
|
|
|
|
use crate::dom::bindings::codegen::Bindings::WindowBinding::WindowBinding::WindowMethods;
|
|
use crate::dom::bindings::reflector::{reflect_dom_object, DomObject};
|
|
use crate::dom::bindings::root::DomRoot;
|
|
use crate::dom::bindings::str::DOMString;
|
|
use crate::dom::cssconditionrule::CSSConditionRule;
|
|
use crate::dom::cssrule::SpecificCSSRule;
|
|
use crate::dom::cssstylesheet::CSSStyleSheet;
|
|
use crate::dom::window::Window;
|
|
use cssparser::{Parser, ParserInput};
|
|
use dom_struct::dom_struct;
|
|
use servo_arc::Arc;
|
|
use style::parser::ParserContext;
|
|
use style::shared_lock::{Locked, ToCssWithGuard};
|
|
use style::stylesheets::supports_rule::SupportsCondition;
|
|
use style::stylesheets::{CssRuleType, Origin, SupportsRule};
|
|
use style_traits::{ParsingMode, ToCss};
|
|
|
|
#[dom_struct]
|
|
pub struct CSSSupportsRule {
|
|
cssconditionrule: CSSConditionRule,
|
|
#[ignore_malloc_size_of = "Arc"]
|
|
supportsrule: Arc<Locked<SupportsRule>>,
|
|
}
|
|
|
|
impl CSSSupportsRule {
|
|
fn new_inherited(
|
|
parent_stylesheet: &CSSStyleSheet,
|
|
supportsrule: Arc<Locked<SupportsRule>>,
|
|
) -> CSSSupportsRule {
|
|
let guard = parent_stylesheet.shared_lock().read();
|
|
let list = supportsrule.read_with(&guard).rules.clone();
|
|
CSSSupportsRule {
|
|
cssconditionrule: CSSConditionRule::new_inherited(parent_stylesheet, list),
|
|
supportsrule: supportsrule,
|
|
}
|
|
}
|
|
|
|
#[allow(unrooted_must_root)]
|
|
pub fn new(
|
|
window: &Window,
|
|
parent_stylesheet: &CSSStyleSheet,
|
|
supportsrule: Arc<Locked<SupportsRule>>,
|
|
) -> DomRoot<CSSSupportsRule> {
|
|
reflect_dom_object(
|
|
Box::new(CSSSupportsRule::new_inherited(
|
|
parent_stylesheet,
|
|
supportsrule,
|
|
)),
|
|
window,
|
|
)
|
|
}
|
|
|
|
/// <https://drafts.csswg.org/css-conditional-3/#the-csssupportsrule-interface>
|
|
pub fn get_condition_text(&self) -> DOMString {
|
|
let guard = self.cssconditionrule.shared_lock().read();
|
|
let rule = self.supportsrule.read_with(&guard);
|
|
rule.condition.to_css_string().into()
|
|
}
|
|
|
|
/// <https://drafts.csswg.org/css-conditional-3/#the-csssupportsrule-interface>
|
|
pub fn set_condition_text(&self, text: DOMString) {
|
|
let mut input = ParserInput::new(&text);
|
|
let mut input = Parser::new(&mut input);
|
|
let cond = SupportsCondition::parse(&mut input);
|
|
if let Ok(cond) = cond {
|
|
let global = self.global();
|
|
let win = global.as_window();
|
|
let url = win.Document().url();
|
|
let quirks_mode = win.Document().quirks_mode();
|
|
let context = ParserContext::new(
|
|
Origin::Author,
|
|
&url,
|
|
Some(CssRuleType::Supports),
|
|
ParsingMode::DEFAULT,
|
|
quirks_mode,
|
|
None,
|
|
None,
|
|
);
|
|
let enabled = {
|
|
let namespaces = self
|
|
.cssconditionrule
|
|
.parent_stylesheet()
|
|
.style_stylesheet()
|
|
.contents
|
|
.namespaces
|
|
.read();
|
|
cond.eval(&context, &namespaces)
|
|
};
|
|
let mut guard = self.cssconditionrule.shared_lock().write();
|
|
let rule = self.supportsrule.write_with(&mut guard);
|
|
rule.condition = cond;
|
|
rule.enabled = enabled;
|
|
}
|
|
}
|
|
}
|
|
|
|
impl SpecificCSSRule for CSSSupportsRule {
|
|
fn ty(&self) -> u16 {
|
|
use crate::dom::bindings::codegen::Bindings::CSSRuleBinding::CSSRuleConstants;
|
|
CSSRuleConstants::SUPPORTS_RULE
|
|
}
|
|
|
|
fn get_css(&self) -> DOMString {
|
|
let guard = self.cssconditionrule.shared_lock().read();
|
|
self.supportsrule
|
|
.read_with(&guard)
|
|
.to_css_string(&guard)
|
|
.into()
|
|
}
|
|
}
|