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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 crate::dom::bindings::codegen::Bindings::DocumentBinding::DocumentMethods;
use crate::dom::bindings::codegen::Bindings::HTMLTemplateElementBinding::HTMLTemplateElementMethods;
use crate::dom::bindings::codegen::Bindings::NodeBinding::NodeMethods;
use crate::dom::bindings::inheritance::Castable;
use crate::dom::bindings::root::{DomRoot, MutNullableDom};
use crate::dom::document::Document;
use crate::dom::documentfragment::DocumentFragment;
use crate::dom::htmlelement::HTMLElement;
use crate::dom::node::{document_from_node, CloneChildrenFlag, Node};
use crate::dom::virtualmethods::VirtualMethods;
use crate::script_runtime::CanGc;
#[dom_struct]
pub struct HTMLTemplateElement {
htmlelement: HTMLElement,
/// <https://html.spec.whatwg.org/multipage/#template-contents>
contents: MutNullableDom<DocumentFragment>,
}
impl HTMLTemplateElement {
fn new_inherited(
local_name: LocalName,
prefix: Option<Prefix>,
document: &Document,
) -> HTMLTemplateElement {
HTMLTemplateElement {
htmlelement: HTMLElement::new_inherited(local_name, prefix, document),
contents: MutNullableDom::new(None),
}
}
#[allow(crown::unrooted_must_root)]
pub fn new(
local_name: LocalName,
prefix: Option<Prefix>,
document: &Document,
proto: Option<HandleObject>,
) -> DomRoot<HTMLTemplateElement> {
let n = Node::reflect_node_with_proto(
Box::new(HTMLTemplateElement::new_inherited(
local_name, prefix, document,
)),
document,
proto,
);
n.upcast::<Node>().set_weird_parser_insertion_mode();
n
}
}
impl HTMLTemplateElementMethods for HTMLTemplateElement {
/// <https://html.spec.whatwg.org/multipage/#dom-template-content>
fn Content(&self, can_gc: CanGc) -> DomRoot<DocumentFragment> {
self.contents.or_init(|| {
let doc = document_from_node(self);
doc.appropriate_template_contents_owner_document(can_gc)
.CreateDocumentFragment()
})
}
}
impl VirtualMethods for HTMLTemplateElement {
fn super_type(&self) -> Option<&dyn VirtualMethods> {
Some(self.upcast::<HTMLElement>() as &dyn VirtualMethods)
}
/// <https://html.spec.whatwg.org/multipage/#template-adopting-steps>
fn adopting_steps(&self, old_doc: &Document) {
self.super_type().unwrap().adopting_steps(old_doc);
// Step 1.
let doc =
document_from_node(self).appropriate_template_contents_owner_document(CanGc::note());
// Step 2.
Node::adopt(self.Content(CanGc::note()).upcast(), &doc);
}
/// <https://html.spec.whatwg.org/multipage/#the-template-element:concept-node-clone-ext>
fn cloning_steps(
&self,
copy: &Node,
maybe_doc: Option<&Document>,
clone_children: CloneChildrenFlag,
) {
self.super_type()
.unwrap()
.cloning_steps(copy, maybe_doc, clone_children);
if clone_children == CloneChildrenFlag::DoNotCloneChildren {
// Step 1.
return;
}
let copy = copy.downcast::<HTMLTemplateElement>().unwrap();
// Steps 2-3.
let copy_contents = DomRoot::upcast::<Node>(copy.Content(CanGc::note()));
let copy_contents_doc = copy_contents.owner_doc();
for child in self.Content(CanGc::note()).upcast::<Node>().children() {
let copy_child = Node::clone(
&child,
Some(©_contents_doc),
CloneChildrenFlag::CloneChildren,
CanGc::note(),
);
copy_contents.AppendChild(©_child).unwrap();
}
}
}
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