forked from mirrors/gecko-dev
80ee45ce5c
This removes a trait object from the path of reporting a CSS error. --- - [X] `./mach build -d` does not report any errors - [X] `./mach test-tidy` does not report any errors - [X] There are tests for these changes Source-Repo: https://github.com/servo/servo Source-Revision: d4ddec8d33dbdaa248ae45d7c8ff58cfca7d7a5e --HG-- extra : subtree_source : https%3A//hg.mozilla.org/projects/converted-servo-linear extra : subtree_revision : 2cba60dc31ad007b10425814f9aa46299a053366
66 lines
2.3 KiB
Rust
66 lines
2.3 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 http://mozilla.org/MPL/2.0/. */
|
|
|
|
use cssparser::{Parser, ParserInput, serialize_identifier};
|
|
use dom::bindings::codegen::Bindings::WindowBinding::WindowBinding::WindowMethods;
|
|
use dom::bindings::error::Fallible;
|
|
use dom::bindings::reflector::Reflector;
|
|
use dom::bindings::str::DOMString;
|
|
use dom::window::Window;
|
|
use dom_struct::dom_struct;
|
|
use style::context::QuirksMode;
|
|
use style::parser::ParserContext;
|
|
use style::stylesheets::CssRuleType;
|
|
use style::stylesheets::supports_rule::{Declaration, parse_condition_or_declaration};
|
|
use style_traits::PARSING_MODE_DEFAULT;
|
|
|
|
#[dom_struct]
|
|
pub struct CSS {
|
|
reflector_: Reflector,
|
|
}
|
|
|
|
impl CSS {
|
|
/// http://dev.w3.org/csswg/cssom/#serialize-an-identifier
|
|
pub fn Escape(_: &Window, ident: DOMString) -> Fallible<DOMString> {
|
|
let mut escaped = String::new();
|
|
serialize_identifier(&ident, &mut escaped).unwrap();
|
|
Ok(DOMString::from(escaped))
|
|
}
|
|
|
|
/// https://drafts.csswg.org/css-conditional/#dom-css-supports
|
|
pub fn Supports(win: &Window, property: DOMString, value: DOMString) -> bool {
|
|
let mut decl = String::new();
|
|
serialize_identifier(&property, &mut decl).unwrap();
|
|
decl.push_str(": ");
|
|
decl.push_str(&value);
|
|
let decl = Declaration(decl);
|
|
let url = win.Document().url();
|
|
let context = ParserContext::new_for_cssom(
|
|
&url,
|
|
Some(CssRuleType::Style),
|
|
PARSING_MODE_DEFAULT,
|
|
QuirksMode::NoQuirks
|
|
);
|
|
decl.eval(&context)
|
|
}
|
|
|
|
/// https://drafts.csswg.org/css-conditional/#dom-css-supports
|
|
pub fn Supports_(win: &Window, condition: DOMString) -> bool {
|
|
let mut input = ParserInput::new(&condition);
|
|
let mut input = Parser::new(&mut input);
|
|
let cond = parse_condition_or_declaration(&mut input);
|
|
if let Ok(cond) = cond {
|
|
let url = win.Document().url();
|
|
let context = ParserContext::new_for_cssom(
|
|
&url,
|
|
Some(CssRuleType::Style),
|
|
PARSING_MODE_DEFAULT,
|
|
QuirksMode::NoQuirks
|
|
);
|
|
cond.eval(&context)
|
|
} else {
|
|
false
|
|
}
|
|
}
|
|
}
|