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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::HTMLLinkElementBinding;
use dom::bindings::codegen::InheritTypes::HTMLLinkElementDerived;
use dom::bindings::codegen::InheritTypes::{ElementCast, HTMLElementCast, NodeCast};
use dom::bindings::js::{JSRef, Temporary, OptionalRootable};
use dom::bindings::utils::{Reflectable, Reflector};
use dom::document::Document;
use dom::element::{AttributeHandlers, Element, HTMLLinkElementTypeId};
use dom::eventtarget::{EventTarget, NodeTargetTypeId};
use dom::htmlelement::HTMLElement;
use dom::node::{Node, NodeHelpers, ElementNodeTypeId, window_from_node};
use dom::virtualmethods::VirtualMethods;
use layout_interface::{LayoutChan, LoadStylesheetMsg};
use servo_util::atom::Atom;
use servo_util::str::{DOMString, HTML_SPACE_CHARACTERS};
use servo_util::namespace::Null;
use std::ascii::StrAsciiExt;
use url::UrlParser;
#[deriving(Encodable)]
pub struct HTMLLinkElement {
pub htmlelement: HTMLElement,
}
impl HTMLLinkElementDerived for EventTarget {
fn is_htmllinkelement(&self) -> bool {
self.type_id == NodeTargetTypeId(ElementNodeTypeId(HTMLLinkElementTypeId))
}
}
impl HTMLLinkElement {
pub fn new_inherited(localName: DOMString, document: &JSRef<Document>) -> HTMLLinkElement {
HTMLLinkElement {
htmlelement: HTMLElement::new_inherited(HTMLLinkElementTypeId, localName, document)
}
}
pub fn new(localName: DOMString, document: &JSRef<Document>) -> Temporary<HTMLLinkElement> {
let element = HTMLLinkElement::new_inherited(localName, document);
Node::reflect_node(box element, document, HTMLLinkElementBinding::Wrap)
}
}
impl<'a> VirtualMethods for JSRef<'a, HTMLLinkElement> {
fn super_type<'a>(&'a self) -> Option<&'a VirtualMethods> {
let htmlelement: &JSRef<HTMLElement> = HTMLElementCast::from_ref(self);
Some(htmlelement as &VirtualMethods)
}
fn after_set_attr(&self, name: &Atom, value: DOMString) {
match self.super_type() {
Some(ref s) => s.after_set_attr(name, value.clone()),
_ => (),
}
let node: &JSRef<Node> = NodeCast::from_ref(self);
match name.as_slice() {
"href" => node.set_enabled_state(true),
_ => ()
}
}
fn before_remove_attr(&self, name: &Atom, value: DOMString) {
match self.super_type() {
Some(ref s) => s.before_remove_attr(name, value.clone()),
_ => (),
}
let node: &JSRef<Node> = NodeCast::from_ref(self);
match name.as_slice() {
"href" => node.set_enabled_state(false),
_ => ()
}
}
fn bind_to_tree(&self, tree_in_doc: bool) {
match self.super_type() {
Some(ref s) => s.bind_to_tree(tree_in_doc),
_ => ()
}
if tree_in_doc {
let element: &JSRef<Element> = ElementCast::from_ref(self);
// FIXME: workaround for https://github.com/mozilla/rust/issues/13246;
// we get unrooting order failures if these are inside the match.
let rel = {
let rel = element.get_attribute(Null, "rel").root();
rel.map(|rel| rel.deref().value().as_slice().to_string())
};
let href = {
let href = element.get_attribute(Null, "href").root();
href.map(|href| href.deref().value().as_slice().to_string())
};
match (rel, href) {
(Some(ref rel), Some(ref href)) => {
if rel.as_slice().split(HTML_SPACE_CHARACTERS.as_slice())
.any(|s| s.as_slice().eq_ignore_ascii_case("stylesheet")) {
self.handle_stylesheet_url(href.as_slice());
}
}
_ => {}
}
}
}
}
trait PrivateHTMLLinkElementHelpers {
fn handle_stylesheet_url(&self, href: &str);
}
impl<'a> PrivateHTMLLinkElementHelpers for JSRef<'a, HTMLLinkElement> {
fn handle_stylesheet_url(&self, href: &str) {
let window = window_from_node(self).root();
match UrlParser::new().base_url(&window.deref().page().get_url()).parse(href) {
Ok(url) => {
let LayoutChan(ref layout_chan) = *window.deref().page().layout_chan;
layout_chan.send(LoadStylesheetMsg(url));
}
Err(e) => debug!("Parsing url {:s} failed: {:?}", href, e)
}
}
}
impl Reflectable for HTMLLinkElement {
fn reflector<'a>(&'a self) -> &'a Reflector {
self.htmlelement.reflector()
}
}
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