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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;
use dom::bindings::cell::DOMRefCell;
use dom::bindings::codegen::Bindings::HTMLStyleElementBinding;
use dom::bindings::codegen::Bindings::HTMLStyleElementBinding::HTMLStyleElementMethods;
use dom::bindings::codegen::Bindings::NodeBinding::NodeMethods;
use dom::bindings::inheritance::Castable;
use dom::bindings::js::{JS, MutNullableHeap, Root};
use dom::bindings::str::DOMString;
use dom::cssstylesheet::CSSStyleSheet;
use dom::document::Document;
use dom::element::Element;
use dom::htmlelement::HTMLElement;
use dom::node::{ChildrenMutation, Node, document_from_node, window_from_node};
use dom::stylesheet::StyleSheet as DOMStyleSheet;
use dom::virtualmethods::VirtualMethods;
use html5ever_atoms::LocalName;
use script_layout_interface::message::Msg;
use std::sync::Arc;
use style::media_queries::parse_media_query_list;
use style::parser::ParserContextExtraData;
use style::stylesheets::{Stylesheet, Origin};
#[dom_struct]
pub struct HTMLStyleElement {
htmlelement: HTMLElement,
#[ignore_heap_size_of = "Arc"]
stylesheet: DOMRefCell<Option<Arc<Stylesheet>>>,
cssom_stylesheet: MutNullableHeap<JS<CSSStyleSheet>>,
}
impl HTMLStyleElement {
fn new_inherited(local_name: LocalName,
prefix: Option<DOMString>,
document: &Document) -> HTMLStyleElement {
HTMLStyleElement {
htmlelement: HTMLElement::new_inherited(local_name, prefix, document),
stylesheet: DOMRefCell::new(None),
cssom_stylesheet: MutNullableHeap::new(None),
}
}
#[allow(unrooted_must_root)]
pub fn new(local_name: LocalName,
prefix: Option<DOMString>,
document: &Document) -> Root<HTMLStyleElement> {
Node::reflect_node(box HTMLStyleElement::new_inherited(local_name, prefix, document),
document,
HTMLStyleElementBinding::Wrap)
}
pub fn parse_own_css(&self) {
let node = self.upcast::<Node>();
let element = self.upcast::<Element>();
assert!(node.is_in_doc());
let win = window_from_node(node);
let url = win.get_url();
let mq_attribute = element.get_attribute(&ns!(), &local_name!("media"));
let mq_str = match mq_attribute {
Some(a) => String::from(&**a.value()),
None => String::new(),
};
let data = node.GetTextContent().expect("Element.textContent must be a string");
let mq = parse_media_query_list(&mut CssParser::new(&mq_str));
let sheet = Stylesheet::from_str(&data, url, Origin::Author, mq, win.css_error_reporter(),
ParserContextExtraData::default());
let sheet = Arc::new(sheet);
win.layout_chan().send(Msg::AddStylesheet(sheet.clone())).unwrap();
*self.stylesheet.borrow_mut() = Some(sheet);
let doc = document_from_node(self);
doc.invalidate_stylesheets();
}
pub fn get_stylesheet(&self) -> Option<Arc<Stylesheet>> {
self.stylesheet.borrow().clone()
}
pub fn get_cssom_stylesheet(&self) -> Option<Root<CSSStyleSheet>> {
self.get_stylesheet().map(|sheet| {
self.cssom_stylesheet.or_init(|| {
CSSStyleSheet::new(&window_from_node(self),
"text/css".into(),
None, // todo handle location
None, // todo handle title
sheet)
})
})
}
}
impl VirtualMethods for HTMLStyleElement {
fn super_type(&self) -> Option<&VirtualMethods> {
Some(self.upcast::<HTMLElement>() as &VirtualMethods)
}
fn children_changed(&self, mutation: &ChildrenMutation) {
if let Some(ref s) = self.super_type() {
s.children_changed(mutation);
}
if self.upcast::<Node>().is_in_doc() {
self.parse_own_css();
}
}
fn bind_to_tree(&self, tree_in_doc: bool) {
if let Some(ref s) = self.super_type() {
s.bind_to_tree(tree_in_doc);
}
if tree_in_doc {
self.parse_own_css();
}
}
}
impl HTMLStyleElementMethods for HTMLStyleElement {
// https://drafts.csswg.org/cssom/#dom-linkstyle-sheet
fn GetSheet(&self) -> Option<Root<DOMStyleSheet>> {
self.get_cssom_stylesheet().map(Root::upcast)
}
}
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