script/dom/html/
htmltemplateelement.rs

1/* This Source Code Form is subject to the terms of the Mozilla Public
2 * License, v. 2.0. If a copy of the MPL was not distributed with this
3 * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
4
5use dom_struct::dom_struct;
6use html5ever::{LocalName, Prefix};
7use js::context::JSContext;
8use js::rust::HandleObject;
9
10use crate::dom::bindings::codegen::Bindings::DocumentBinding::DocumentMethods;
11use crate::dom::bindings::codegen::Bindings::HTMLTemplateElementBinding::HTMLTemplateElementMethods;
12use crate::dom::bindings::codegen::Bindings::NodeBinding::NodeMethods;
13use crate::dom::bindings::inheritance::Castable;
14use crate::dom::bindings::root::{DomRoot, MutNullableDom};
15use crate::dom::bindings::str::DOMString;
16use crate::dom::document::Document;
17use crate::dom::documentfragment::DocumentFragment;
18use crate::dom::html::htmlelement::HTMLElement;
19use crate::dom::node::{CloneChildrenFlag, Node, NodeTraits};
20use crate::dom::virtualmethods::VirtualMethods;
21use crate::script_runtime::CanGc;
22
23#[dom_struct]
24pub(crate) struct HTMLTemplateElement {
25    htmlelement: HTMLElement,
26
27    /// <https://html.spec.whatwg.org/multipage/#template-contents>
28    contents: MutNullableDom<DocumentFragment>,
29}
30
31impl HTMLTemplateElement {
32    fn new_inherited(
33        local_name: LocalName,
34        prefix: Option<Prefix>,
35        document: &Document,
36    ) -> HTMLTemplateElement {
37        HTMLTemplateElement {
38            htmlelement: HTMLElement::new_inherited(local_name, prefix, document),
39            contents: MutNullableDom::new(None),
40        }
41    }
42
43    pub(crate) fn new(
44        cx: &mut js::context::JSContext,
45        local_name: LocalName,
46        prefix: Option<Prefix>,
47        document: &Document,
48        proto: Option<HandleObject>,
49    ) -> DomRoot<HTMLTemplateElement> {
50        let n = Node::reflect_node_with_proto(
51            cx,
52            Box::new(HTMLTemplateElement::new_inherited(
53                local_name, prefix, document,
54            )),
55            document,
56            proto,
57        );
58
59        n.upcast::<Node>().set_weird_parser_insertion_mode();
60        n
61    }
62
63    pub(crate) fn set_contents(&self, document_fragment: Option<&DocumentFragment>) {
64        self.contents.set(document_fragment);
65    }
66}
67
68#[expect(unused_doc_comments)]
69impl HTMLTemplateElementMethods<crate::DomTypeHolder> for HTMLTemplateElement {
70    /// <https://html.spec.whatwg.org/multipage/#dom-template-shadowrootmode>
71    make_enumerated_getter!(
72        ShadowRootMode,
73        "shadowrootmode",
74        "open" | "closed",
75        missing => "",
76        invalid => ""
77    );
78
79    /// <https://html.spec.whatwg.org/multipage/#dom-template-shadowrootmode>
80    make_atomic_setter!(SetShadowRootMode, "shadowrootmode");
81
82    /// <https://html.spec.whatwg.org/multipage/#dom-template-shadowrootdelegatesfocus>
83    make_bool_getter!(ShadowRootDelegatesFocus, "shadowrootdelegatesfocus");
84
85    /// <https://html.spec.whatwg.org/multipage/#dom-template-shadowrootdelegatesfocus>
86    make_bool_setter!(SetShadowRootDelegatesFocus, "shadowrootdelegatesfocus");
87
88    /// <https://html.spec.whatwg.org/multipage/#dom-template-shadowrootclonable>
89    make_bool_getter!(ShadowRootClonable, "shadowrootclonable");
90
91    /// <https://html.spec.whatwg.org/multipage/#dom-template-shadowrootclonable>
92    make_bool_setter!(SetShadowRootClonable, "shadowrootclonable");
93
94    /// <https://html.spec.whatwg.org/multipage/#dom-template-shadowrootserializable>
95    make_bool_getter!(ShadowRootSerializable, "shadowrootserializable");
96
97    /// <https://html.spec.whatwg.org/multipage/#dom-template-shadowrootserializable>
98    make_bool_setter!(SetShadowRootSerializable, "shadowrootserializable");
99
100    /// <https://html.spec.whatwg.org/multipage/#dom-template-content>
101    fn Content(&self, cx: &mut js::context::JSContext) -> DomRoot<DocumentFragment> {
102        self.contents.or_init(|| {
103            // https://html.spec.whatwg.org/multipage/#template-contents
104            // Step 1. Let document be the template element's node document's appropriate template contents owner document.
105            let doc = self.owner_document();
106            // Step 2. Create a DocumentFragment object whose node document is document and host is the template element.
107            let document_fragment = doc
108                .appropriate_template_contents_owner_document(CanGc::from_cx(cx))
109                .CreateDocumentFragment(cx);
110            document_fragment.set_host(self.upcast());
111            // Step 3. Set the template element's template contents to the newly created DocumentFragment object.
112            document_fragment
113        })
114    }
115}
116
117impl VirtualMethods for HTMLTemplateElement {
118    fn super_type(&self) -> Option<&dyn VirtualMethods> {
119        Some(self.upcast::<HTMLElement>() as &dyn VirtualMethods)
120    }
121
122    /// <https://html.spec.whatwg.org/multipage/#template-adopting-steps>
123    fn adopting_steps(&self, cx: &mut JSContext, old_doc: &Document) {
124        self.super_type().unwrap().adopting_steps(cx, old_doc);
125        // Step 1.
126        let doc = self
127            .owner_document()
128            .appropriate_template_contents_owner_document(CanGc::from_cx(cx));
129        // Step 2.
130        let content = self.Content(cx);
131        Node::adopt(cx, content.upcast(), &doc);
132    }
133
134    /// <https://html.spec.whatwg.org/multipage/#the-template-element:concept-node-clone-ext>
135    fn cloning_steps(
136        &self,
137        cx: &mut JSContext,
138        copy: &Node,
139        maybe_doc: Option<&Document>,
140        clone_children: CloneChildrenFlag,
141    ) {
142        self.super_type()
143            .unwrap()
144            .cloning_steps(cx, copy, maybe_doc, clone_children);
145        if clone_children == CloneChildrenFlag::DoNotCloneChildren {
146            // Step 1.
147            return;
148        }
149        let copy = copy.downcast::<HTMLTemplateElement>().unwrap();
150        // Steps 2-3.
151        let copy_contents = DomRoot::upcast::<Node>(copy.Content(cx));
152        let copy_contents_doc = copy_contents.owner_doc();
153        for child in self.Content(cx).upcast::<Node>().children() {
154            let copy_child = Node::clone(
155                cx,
156                &child,
157                Some(&copy_contents_doc),
158                CloneChildrenFlag::CloneChildren,
159                None,
160            );
161            copy_contents.AppendChild(cx, &copy_child).unwrap();
162        }
163    }
164}
script/dom/html/htmltemplateelement.rs

script/dom/html/
htmltemplateelement.rs
