mirror of
https://github.com/servo/servo.git
synced 2025-06-08 08:33:26 +00:00
1327ebd52f
It could be used to have mutable JSVal fields without GC barriers. With the removal of that trait, MutHeap and MutNullableHeap can respectively be replaced by MutJS and MutNullableJS.
90 lines
3.6 KiB
Rust
90 lines
3.6 KiB
Rust
/* 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::bindings::str::DOMString;
|
|
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 html5ever_atoms::LocalName;
|
|
|
|
#[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<DOMString>,
|
|
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<DOMString>,
|
|
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();
|
|
}
|
|
}
|
|
}
|