servo/components/script/dom/htmlbaseelement.rs

64 lines
2.5 KiB
Rust

/* 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::HTMLBaseElementBinding;
use dom::bindings::codegen::InheritTypes::ElementCast;
use dom::bindings::codegen::InheritTypes::HTMLBaseElementDerived;
use dom::bindings::codegen::InheritTypes::HTMLElementCast;
use dom::bindings::js::Root;
use dom::document::{Document, DocumentHelpers};
use dom::eventtarget::{EventTarget, EventTargetTypeId};
use dom::element::{ElementTypeId, AttributeHandlers};
use dom::htmlelement::{HTMLElement, HTMLElementTypeId};
use dom::node::{Node, NodeTypeId, document_from_node};
use dom::virtualmethods::VirtualMethods;
use util::str::DOMString;
use url::{Url, UrlParser};
#[dom_struct]
pub struct HTMLBaseElement {
htmlelement: HTMLElement
}
impl HTMLBaseElementDerived for EventTarget {
fn is_htmlbaseelement(&self) -> bool {
*self.type_id() ==
EventTargetTypeId::Node(
NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLBaseElement)))
}
}
impl HTMLBaseElement {
fn new_inherited(localName: DOMString, prefix: Option<DOMString>, document: &Document) -> HTMLBaseElement {
HTMLBaseElement {
htmlelement: HTMLElement::new_inherited(HTMLElementTypeId::HTMLBaseElement, localName, prefix, document)
}
}
#[allow(unrooted_must_root)]
pub fn new(localName: DOMString,
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 = ElementCast::from_ref(self).get_attribute(&ns!(""), &atom!("href"))
.expect("The frozen base url is only defined for base elements \
that have a base url.");
let base = document_from_node(self).fallback_base_url();
let parsed = UrlParser::new().base_url(&base).parse(&href.value());
parsed.unwrap_or(base)
}
}
impl<'a> VirtualMethods for &'a HTMLBaseElement {
fn super_type<'b>(&'b self) -> Option<&'b VirtualMethods> {
Some(HTMLElementCast::from_borrowed_ref(self) as &VirtualMethods)
}
}