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/* 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 as CssParser, ParserInput as CssParserInput};
use cssparser::ToCss;
use dom::bindings::codegen::Bindings::CSSStyleRuleBinding::{self, CSSStyleRuleMethods};
use dom::bindings::codegen::Bindings::WindowBinding::WindowBinding::WindowMethods;
use dom::bindings::inheritance::Castable;
use dom::bindings::reflector::{DomObject, reflect_dom_object};
use dom::bindings::root::{Dom, DomRoot, MutNullableDom};
use dom::bindings::str::DOMString;
use dom::cssrule::{CSSRule, SpecificCSSRule};
use dom::cssstyledeclaration::{CSSModificationAccess, CSSStyleDeclaration, CSSStyleOwner};
use dom::cssstylesheet::CSSStyleSheet;
use dom::window::Window;
use dom_struct::dom_struct;
use selectors::parser::SelectorList;
use servo_arc::Arc;
use std::mem;
use style::selector_parser::SelectorParser;
use style::shared_lock::{Locked, ToCssWithGuard};
use style::stylesheets::{StyleRule, Origin};
#[dom_struct]
pub struct CSSStyleRule {
cssrule: CSSRule,
#[ignore_heap_size_of = "Arc"]
stylerule: Arc<Locked<StyleRule>>,
style_decl: MutNullableDom<CSSStyleDeclaration>,
}
impl CSSStyleRule {
fn new_inherited(parent_stylesheet: &CSSStyleSheet, stylerule: Arc<Locked<StyleRule>>)
-> CSSStyleRule {
CSSStyleRule {
cssrule: CSSRule::new_inherited(parent_stylesheet),
stylerule: stylerule,
style_decl: Default::default(),
}
}
#[allow(unrooted_must_root)]
pub fn new(window: &Window, parent_stylesheet: &CSSStyleSheet,
stylerule: Arc<Locked<StyleRule>>) -> DomRoot<CSSStyleRule> {
reflect_dom_object(box CSSStyleRule::new_inherited(parent_stylesheet, stylerule),
window,
CSSStyleRuleBinding::Wrap)
}
}
impl SpecificCSSRule for CSSStyleRule {
fn ty(&self) -> u16 {
use dom::bindings::codegen::Bindings::CSSRuleBinding::CSSRuleConstants;
CSSRuleConstants::STYLE_RULE
}
fn get_css(&self) -> DOMString {
let guard = self.cssrule.shared_lock().read();
self.stylerule.read_with(&guard).to_css_string(&guard).into()
}
}
impl CSSStyleRuleMethods for CSSStyleRule {
// https://drafts.csswg.org/cssom/#dom-cssstylerule-style
fn Style(&self) -> DomRoot<CSSStyleDeclaration> {
self.style_decl.or_init(|| {
let guard = self.cssrule.shared_lock().read();
CSSStyleDeclaration::new(
self.global().as_window(),
CSSStyleOwner::CSSRule(
Dom::from_ref(self.upcast()),
self.stylerule.read_with(&guard).block.clone()
),
None,
CSSModificationAccess::ReadWrite
)
})
}
// https://drafts.csswg.org/cssom/#dom-cssstylerule-selectortext
fn SelectorText(&self) -> DOMString {
let guard = self.cssrule.shared_lock().read();
let stylerule = self.stylerule.read_with(&guard);
return DOMString::from_string(stylerule.selectors.to_css_string());
}
// https://drafts.csswg.org/cssom/#dom-cssstylerule-selectortext
fn SetSelectorText(&self, value: DOMString) {
// It's not clear from the spec if we should use the stylesheet's namespaces.
// https://github.com/w3c/csswg-drafts/issues/1511
let namespaces = self.cssrule.parent_stylesheet().style_stylesheet().contents.namespaces.read();
let parser = SelectorParser {
stylesheet_origin: Origin::Author,
namespaces: &namespaces,
url_data: None,
};
let mut css_parser = CssParserInput::new(&*value);
let mut css_parser = CssParser::new(&mut css_parser);
if let Ok(mut s) = SelectorList::parse(&parser, &mut css_parser) {
// This mirrors what we do in CSSStyleOwner::mutate_associated_block.
let mut guard = self.cssrule.shared_lock().write();
let stylerule = self.stylerule.write_with(&mut guard);
mem::swap(&mut stylerule.selectors, &mut s);
// It seems like we will want to avoid having to invalidate all
// stylesheets eventually!
self.global().as_window().Document().invalidate_stylesheets();
}
}
}
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