mirror of
https://github.com/servo/servo.git
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115 lines
3.9 KiB
Rust
115 lines
3.9 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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use dom::attr::Attr;
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use dom::bindings::codegen::Bindings::HTMLBaseElementBinding;
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use dom::bindings::codegen::Bindings::HTMLBaseElementBinding::HTMLBaseElementMethods;
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use dom::bindings::inheritance::Castable;
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use dom::bindings::js::Root;
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use dom::bindings::str::DOMString;
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use dom::document::Document;
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use dom::element::{AttributeMutation, Element};
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use dom::htmlelement::HTMLElement;
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use dom::node::{Node, UnbindContext, document_from_node};
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use dom::virtualmethods::VirtualMethods;
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use dom_struct::dom_struct;
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use html5ever_atoms::{LocalName, Prefix};
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use servo_url::ServoUrl;
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use style::attr::AttrValue;
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#[dom_struct]
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pub struct HTMLBaseElement {
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htmlelement: HTMLElement
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}
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impl HTMLBaseElement {
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fn new_inherited(local_name: LocalName, prefix: Option<Prefix>, document: &Document) -> HTMLBaseElement {
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HTMLBaseElement {
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htmlelement: HTMLElement::new_inherited(local_name, prefix, document)
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}
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}
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#[allow(unrooted_must_root)]
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pub fn new(local_name: LocalName,
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prefix: Option<Prefix>,
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document: &Document) -> Root<HTMLBaseElement> {
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Node::reflect_node(box HTMLBaseElement::new_inherited(local_name, prefix, document),
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document,
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HTMLBaseElementBinding::Wrap)
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}
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/// https://html.spec.whatwg.org/multipage/#frozen-base-url
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pub fn frozen_base_url(&self) -> ServoUrl {
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let href = self.upcast::<Element>().get_attribute(&ns!(), &local_name!("href"))
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.expect("The frozen base url is only defined for base elements \
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that have a base url.");
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let document = document_from_node(self);
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let base = document.fallback_base_url();
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let parsed = base.join(&href.value());
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parsed.unwrap_or(base)
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}
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/// Update the cached base element in response to binding or unbinding from
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/// a tree.
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pub fn bind_unbind(&self, tree_in_doc: bool) {
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if !tree_in_doc {
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return;
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}
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if self.upcast::<Element>().has_attribute(&local_name!("href")) {
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let document = document_from_node(self);
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document.refresh_base_element();
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}
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}
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}
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impl HTMLBaseElementMethods for HTMLBaseElement {
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// https://html.spec.whatwg.org/multipage/#dom-base-href
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fn Href(&self) -> DOMString {
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let document = document_from_node(self);
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// Step 1.
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if !self.upcast::<Element>().has_attribute(&local_name!("href")) {
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return DOMString::from(document.base_url().as_str());
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}
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// Step 2.
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let fallback_base_url = document.fallback_base_url();
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// Step 3.
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let url = self.upcast::<Element>().get_url_attribute(&local_name!("href"));
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// Step 4.
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let url_record = fallback_base_url.join(&*url);
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// Step 5, 6.
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DOMString::from(url_record.as_ref().map(|url| url.as_str()).unwrap_or(""))
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}
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// https://html.spec.whatwg.org/multipage/#dom-base-href
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make_url_setter!(SetHref, "href");
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}
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impl VirtualMethods for HTMLBaseElement {
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fn super_type(&self) -> Option<&VirtualMethods> {
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Some(self.upcast::<HTMLElement>() as &VirtualMethods)
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}
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fn attribute_mutated(&self, attr: &Attr, mutation: AttributeMutation) {
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self.super_type().unwrap().attribute_mutated(attr, mutation);
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if *attr.local_name() == local_name!("href") {
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document_from_node(self).refresh_base_element();
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}
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}
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fn bind_to_tree(&self, tree_in_doc: bool) {
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self.super_type().unwrap().bind_to_tree(tree_in_doc);
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self.bind_unbind(tree_in_doc);
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}
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fn unbind_from_tree(&self, context: &UnbindContext) {
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self.super_type().unwrap().unbind_from_tree(context);
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self.bind_unbind(context.tree_in_doc);
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}
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}
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