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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, 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]
#[derive(HeapSizeOf)]
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)
}
/// Update the cached base element in response to adding or removing an
/// attribute.
pub fn add_remove_attr(&self, attr: &Attr) {
if *attr.local_name() == atom!("href") {
let document = document_from_node(self);
document.refresh_base_element();
}
}
/// 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 ElementCast::from_ref(self).has_attribute(&atom!("href")) {
let document = document_from_node(self);
document.refresh_base_element();
}
}
}
impl<'a> VirtualMethods for &'a HTMLBaseElement {
fn super_type<'b>(&'b self) -> Option<&'b VirtualMethods> {
Some(HTMLElementCast::from_borrowed_ref(self) as &VirtualMethods)
}
fn after_set_attr(&self, attr: &Attr) {
self.super_type().unwrap().after_set_attr(attr);
self.add_remove_attr(attr);
}
fn before_remove_attr(&self, attr: &Attr) {
self.super_type().unwrap().before_remove_attr(attr);
self.add_remove_attr(attr);
}
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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