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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 https://mozilla.org/MPL/2.0/. */
use crate::dom::attr::Attr;
use crate::dom::bindings::codegen::Bindings::HTMLBaseElementBinding;
use crate::dom::bindings::codegen::Bindings::HTMLBaseElementBinding::HTMLBaseElementMethods;
use crate::dom::bindings::inheritance::Castable;
use crate::dom::bindings::root::DomRoot;
use crate::dom::bindings::str::DOMString;
use crate::dom::document::Document;
use crate::dom::element::{AttributeMutation, Element};
use crate::dom::htmlelement::HTMLElement;
use crate::dom::node::{document_from_node, BindContext, Node, UnbindContext};
use crate::dom::virtualmethods::VirtualMethods;
use dom_struct::dom_struct;
use html5ever::{LocalName, Prefix};
use servo_url::ServoUrl;
#[dom_struct]
pub struct HTMLBaseElement {
htmlelement: HTMLElement,
}
impl HTMLBaseElement {
fn new_inherited(
local_name: LocalName,
prefix: Option<Prefix>,
document: &Document,
) -> HTMLBaseElement {
HTMLBaseElement {
htmlelement: HTMLElement::new_inherited(local_name, prefix, document),
}
}
#[allow(unrooted_must_root)]
pub fn new(
local_name: LocalName,
prefix: Option<Prefix>,
document: &Document,
) -> DomRoot<HTMLBaseElement> {
Node::reflect_node(
Box::new(HTMLBaseElement::new_inherited(local_name, prefix, document)),
document,
HTMLBaseElementBinding::Wrap,
)
}
/// <https://html.spec.whatwg.org/multipage/#frozen-base-url>
pub fn frozen_base_url(&self) -> ServoUrl {
let href = self
.upcast::<Element>()
.get_attribute(&ns!(), &local_name!("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 = base.join(&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 || self.upcast::<Node>().containing_shadow_root().is_some() {
return;
}
if self.upcast::<Element>().has_attribute(&local_name!("href")) {
let document = document_from_node(self);
document.refresh_base_element();
}
}
}
impl HTMLBaseElementMethods for HTMLBaseElement {
// https://html.spec.whatwg.org/multipage/#dom-base-href
fn Href(&self) -> DOMString {
// Step 1.
let document = document_from_node(self);
// Step 2.
let attr = self
.upcast::<Element>()
.get_attribute(&ns!(), &local_name!("href"));
let value = attr.as_ref().map(|attr| attr.value());
let url = value.as_ref().map_or("", |value| &**value);
// Step 3.
let url_record = document.fallback_base_url().join(url);
match url_record {
Err(_) => {
// Step 4.
url.into()
},
Ok(url_record) => {
// Step 5.
url_record.into_string().into()
},
}
}
// https://html.spec.whatwg.org/multipage/#dom-base-href
make_setter!(SetHref, "href");
}
impl VirtualMethods for HTMLBaseElement {
fn super_type(&self) -> Option<&dyn VirtualMethods> {
Some(self.upcast::<HTMLElement>() as &dyn VirtualMethods)
}
fn attribute_mutated(&self, attr: &Attr, mutation: AttributeMutation) {
self.super_type().unwrap().attribute_mutated(attr, mutation);
if *attr.local_name() == local_name!("href") {
document_from_node(self).refresh_base_element();
}
}
fn bind_to_tree(&self, context: &BindContext) {
self.super_type().unwrap().bind_to_tree(context);
self.bind_unbind(context.tree_in_doc);
}
fn unbind_from_tree(&self, context: &UnbindContext) {
self.super_type().unwrap().unbind_from_tree(context);
self.bind_unbind(context.tree_in_doc);
}
}
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