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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::Attr;
use dom::bindings::codegen::Bindings::HTMLBaseElementBinding;
use dom::bindings::inheritance::Castable;
use dom::bindings::js::Root;
use dom::document::Document;
use dom::element::{AttributeMutation, Element};
use dom::htmlelement::HTMLElement;
use dom::node::{Node, document_from_node};
use dom::virtualmethods::VirtualMethods;
use string_cache::Atom;
use url::{Url, UrlParser};
use util::str::DOMString;
#[dom_struct]
pub struct HTMLBaseElement {
htmlelement: HTMLElement
}
impl HTMLBaseElement {
fn new_inherited(localName: Atom, prefix: Option<DOMString>, document: &Document) -> HTMLBaseElement {
HTMLBaseElement {
htmlelement: HTMLElement::new_inherited(localName, prefix, document)
}
}
#[allow(unrooted_must_root)]
pub fn new(localName: Atom,
prefix: Option<DOMString>,
document: &Document) -> Root<HTMLBaseElement> {
let element = HTMLBaseElement::new_inherited(localName, prefix, document);
Node::reflect_node(box element, document, HTMLBaseElementBinding::Wrap)
}
/// https://html.spec.whatwg.org/multipage/#frozen-base-url
pub fn frozen_base_url(&self) -> Url {
let href = self.upcast::<Element>().get_attribute(&ns!(), &atom!("href"))
.expect("The frozen base url is only defined for base elements \
that have a base url.");
let document = document_from_node(self);
let base = document.fallback_base_url();
let parsed = UrlParser::new().base_url(&base).parse(&href.value());
parsed.unwrap_or(base)
}
/// Update the cached base element in response to binding or unbinding from
/// a tree.
pub fn bind_unbind(&self, tree_in_doc: bool) {
if !tree_in_doc {
return;
}
if self.upcast::<Element>().has_attribute(&atom!("href")) {
let document = document_from_node(self);
document.refresh_base_element();
}
}
}
impl VirtualMethods for HTMLBaseElement {
fn super_type(&self) -> Option<&VirtualMethods> {
Some(self.upcast::<HTMLElement>() as &VirtualMethods)
}
fn attribute_mutated(&self, attr: &Attr, mutation: AttributeMutation) {
self.super_type().unwrap().attribute_mutated(attr, mutation);
if *attr.local_name() == atom!("href") {
document_from_node(self).refresh_base_element();
}
}
fn bind_to_tree(&self, tree_in_doc: bool) {
self.super_type().unwrap().bind_to_tree(tree_in_doc);
self.bind_unbind(tree_in_doc);
}
fn unbind_from_tree(&self, tree_in_doc: bool) {
self.super_type().unwrap().unbind_from_tree(tree_in_doc);
self.bind_unbind(tree_in_doc);
}
}
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