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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::bindings::codegen::Bindings::DocumentBinding::DocumentMethods;
use dom::bindings::codegen::Bindings::HTMLTemplateElementBinding;
use dom::bindings::codegen::Bindings::HTMLTemplateElementBinding::HTMLTemplateElementMethods;
use dom::bindings::codegen::Bindings::NodeBinding::NodeMethods;
use dom::bindings::inheritance::Castable;
use dom::bindings::js::{MutNullableJS, Root};
use dom::document::Document;
use dom::documentfragment::DocumentFragment;
use dom::htmlelement::HTMLElement;
use dom::node::{CloneChildrenFlag, Node, document_from_node};
use dom::virtualmethods::VirtualMethods;
use dom_struct::dom_struct;
use html5ever_atoms::{LocalName, Prefix};
#[dom_struct]
pub struct HTMLTemplateElement {
htmlelement: HTMLElement,
/// https://html.spec.whatwg.org/multipage/#template-contents
contents: MutNullableJS<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: MutNullableJS::new(None),
}
}
#[allow(unrooted_must_root)]
pub fn new(local_name: LocalName,
prefix: Option<Prefix>,
document: &Document) -> Root<HTMLTemplateElement> {
Node::reflect_node(box HTMLTemplateElement::new_inherited(local_name, prefix, document),
document,
HTMLTemplateElementBinding::Wrap)
}
}
impl HTMLTemplateElementMethods for HTMLTemplateElement {
/// https://html.spec.whatwg.org/multipage/#dom-template-content
fn Content(&self) -> Root<DocumentFragment> {
self.contents.or_init(|| {
let doc = document_from_node(self);
doc.appropriate_template_contents_owner_document().CreateDocumentFragment()
})
}
}
impl VirtualMethods for HTMLTemplateElement {
fn super_type(&self) -> Option<&VirtualMethods> {
Some(self.upcast::<HTMLElement>() as &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();
// Step 2.
Node::adopt(self.Content().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 = Root::upcast::<Node>(copy.Content());
let copy_contents_doc = copy_contents.owner_doc();
for child in self.Content().upcast::<Node>().children() {
let copy_child = Node::clone(
&child, Some(©_contents_doc), CloneChildrenFlag::CloneChildren);
copy_contents.AppendChild(©_child).unwrap();
}
}
}
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