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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 dom::attr::AttrHelpers;
use dom::bindings::codegen::Bindings::HTMLStyleElementBinding;
use dom::bindings::codegen::Bindings::NodeBinding::NodeMethods;
use dom::bindings::codegen::InheritTypes::{ElementCast, HTMLElementCast, HTMLStyleElementDerived, NodeCast};
use dom::bindings::js::{JSRef, OptionalRootable, Rootable, Temporary, RootedReference};
use dom::document::Document;
use dom::eventtarget::{EventTarget, EventTargetTypeId};
use dom::element::{Element, ElementTypeId, AttributeHandlers};
use dom::htmlelement::{HTMLElement, HTMLElementTypeId};
use dom::node::{Node, NodeHelpers, NodeTypeId, window_from_node};
use dom::virtualmethods::VirtualMethods;
use dom::window::WindowHelpers;
use layout_interface::{LayoutChan, Msg};
use util::str::DOMString;
use style::stylesheets::{Origin, Stylesheet};
use style::media_queries::parse_media_query_list;
use cssparser::Parser as CssParser;
#[dom_struct]
pub struct HTMLStyleElement {
htmlelement: HTMLElement,
}
impl HTMLStyleElementDerived for EventTarget {
fn is_htmlstyleelement(&self) -> bool {
*self.type_id() ==
EventTargetTypeId::Node(
NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLStyleElement)))
}
}
impl HTMLStyleElement {
fn new_inherited(localName: DOMString,
prefix: Option<DOMString>,
document: JSRef<Document>) -> HTMLStyleElement {
HTMLStyleElement {
htmlelement: HTMLElement::new_inherited(HTMLElementTypeId::HTMLStyleElement, localName, prefix, document)
}
}
#[allow(unrooted_must_root)]
pub fn new(localName: DOMString,
prefix: Option<DOMString>,
document: JSRef<Document>) -> Temporary<HTMLStyleElement> {
let element = HTMLStyleElement::new_inherited(localName, prefix, document);
Node::reflect_node(box element, document, HTMLStyleElementBinding::Wrap)
}
}
pub trait StyleElementHelpers {
fn parse_own_css(self);
}
impl<'a> StyleElementHelpers for JSRef<'a, HTMLStyleElement> {
fn parse_own_css(self) {
let node: JSRef<Node> = NodeCast::from_ref(self);
let element: JSRef<Element> = ElementCast::from_ref(self);
assert!(node.is_in_doc());
let win = window_from_node(node).root();
let win = win.r();
let url = win.get_url();
let mq_attribute = element.get_attribute(&ns!(""), &atom!("media")).root();
let value = mq_attribute.r().map(|a| a.value());
let mq_str = match value {
Some(ref value) => &***value,
None => "",
};
let mut css_parser = CssParser::new(&mq_str);
let media = parse_media_query_list(&mut css_parser);
let data = node.GetTextContent().expect("Element.textContent must be a string");
let sheet = Stylesheet::from_str(&data, url, Origin::Author);
let LayoutChan(ref layout_chan) = win.layout_chan();
layout_chan.send(Msg::AddStylesheet(sheet, media)).unwrap();
}
}
impl<'a> VirtualMethods for JSRef<'a, HTMLStyleElement> {
fn super_type<'b>(&'b self) -> Option<&'b VirtualMethods> {
let htmlelement: &JSRef<HTMLElement> = HTMLElementCast::from_borrowed_ref(self);
Some(htmlelement as &VirtualMethods)
}
fn child_inserted(&self, child: JSRef<Node>) {
if let Some(ref s) = self.super_type() {
s.child_inserted(child);
}
let node: JSRef<Node> = NodeCast::from_ref(*self);
if 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();
}
}
}
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