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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 dom_struct::dom_struct;
use html5ever::{LocalName, Prefix};
use js::rust::HandleObject;
use style::str::HTML_SPACE_CHARACTERS;
use crate::dom::attr::Attr;
use crate::dom::bindings::codegen::Bindings::HTMLMetaElementBinding::HTMLMetaElementMethods;
use crate::dom::bindings::codegen::Bindings::NodeBinding::NodeMethods;
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::htmlheadelement::HTMLHeadElement;
use crate::dom::node::{BindContext, Node, UnbindContext};
use crate::dom::virtualmethods::VirtualMethods;
#[dom_struct]
pub struct HTMLMetaElement {
htmlelement: HTMLElement,
}
impl HTMLMetaElement {
fn new_inherited(
local_name: LocalName,
prefix: Option<Prefix>,
document: &Document,
) -> HTMLMetaElement {
HTMLMetaElement {
htmlelement: HTMLElement::new_inherited(local_name, prefix, document),
}
}
#[allow(unrooted_must_root)]
pub fn new(
local_name: LocalName,
prefix: Option<Prefix>,
document: &Document,
proto: Option<HandleObject>,
) -> DomRoot<HTMLMetaElement> {
Node::reflect_node_with_proto(
Box::new(HTMLMetaElement::new_inherited(local_name, prefix, document)),
document,
proto,
)
}
fn process_attributes(&self) {
let element = self.upcast::<Element>();
if let Some(ref name) = element.get_name() {
let name = name.to_ascii_lowercase();
let name = name.trim_matches(HTML_SPACE_CHARACTERS);
if name == "referrer" {
self.apply_referrer();
}
}
}
fn process_referrer_attribute(&self) {
let element = self.upcast::<Element>();
if let Some(ref name) = element.get_name() {
let name = name.to_ascii_lowercase();
let name = name.trim_matches(HTML_SPACE_CHARACTERS);
if name == "referrer" {
self.apply_referrer();
}
}
}
/// <https://html.spec.whatwg.org/multipage/#meta-referrer>
fn apply_referrer(&self) {
if let Some(parent) = self.upcast::<Node>().GetParentElement() {
if let Some(head) = parent.downcast::<HTMLHeadElement>() {
head.set_document_referrer();
}
}
}
}
impl HTMLMetaElementMethods for HTMLMetaElement {
// https://html.spec.whatwg.org/multipage/#dom-meta-name
make_getter!(Name, "name");
// https://html.spec.whatwg.org/multipage/#dom-meta-name
make_atomic_setter!(SetName, "name");
// https://html.spec.whatwg.org/multipage/#dom-meta-content
make_getter!(Content, "content");
// https://html.spec.whatwg.org/multipage/#dom-meta-content
make_setter!(SetContent, "content");
}
impl VirtualMethods for HTMLMetaElement {
fn super_type(&self) -> Option<&dyn VirtualMethods> {
Some(self.upcast::<HTMLElement>() as &dyn VirtualMethods)
}
fn bind_to_tree(&self, context: &BindContext) {
if let Some(ref s) = self.super_type() {
s.bind_to_tree(context);
}
if context.tree_connected {
self.process_attributes();
}
}
fn attribute_mutated(&self, attr: &Attr, mutation: AttributeMutation) {
if let Some(s) = self.super_type() {
s.attribute_mutated(attr, mutation);
}
self.process_referrer_attribute();
}
fn unbind_from_tree(&self, context: &UnbindContext) {
if let Some(ref s) = self.super_type() {
s.unbind_from_tree(context);
}
if context.tree_connected {
self.process_referrer_attribute();
}
}
}
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