1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
|
/* 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::attr::AttrValue;
use dom::bindings::codegen::Bindings::HTMLLabelElementBinding;
use dom::bindings::codegen::Bindings::HTMLLabelElementBinding::HTMLLabelElementMethods;
use dom::bindings::conversions::Castable;
use dom::bindings::js::Root;
use dom::document::Document;
use dom::element::Element;
use dom::htmlelement::HTMLElement;
use dom::htmlformelement::{FormControl, HTMLFormElement};
use dom::node::{document_from_node, Node};
use dom::virtualmethods::VirtualMethods;
use string_cache::Atom;
use util::str::DOMString;
#[dom_struct]
pub struct HTMLLabelElement {
htmlelement: HTMLElement,
}
impl HTMLLabelElement {
fn new_inherited(localName: DOMString,
prefix: Option<DOMString>,
document: &Document) -> HTMLLabelElement {
HTMLLabelElement {
htmlelement:
HTMLElement::new_inherited(localName, prefix, document)
}
}
#[allow(unrooted_must_root)]
pub fn new(localName: DOMString,
prefix: Option<DOMString>,
document: &Document) -> Root<HTMLLabelElement> {
let element = HTMLLabelElement::new_inherited(localName, prefix, document);
Node::reflect_node(box element, document, HTMLLabelElementBinding::Wrap)
}
}
impl HTMLLabelElementMethods for HTMLLabelElement {
// https://html.spec.whatwg.org/multipage/#dom-fae-form
fn GetForm(&self) -> Option<Root<HTMLFormElement>> {
self.form_owner()
}
// https://html.spec.whatwg.org/multipage/#dom-label-htmlfor
make_getter!(HtmlFor, "for");
// https://html.spec.whatwg.org/multipage/#dom-label-htmlfor
make_atomic_setter!(SetHtmlFor, "for");
// https://html.spec.whatwg.org/multipage/#dom-label-control
fn GetControl(&self) -> Option<Root<HTMLElement>> {
if !self.upcast::<Node>().is_in_doc() {
return None;
}
let for_attr = match self.upcast::<Element>().get_attribute(&ns!(""), &atom!("for")) {
Some(for_attr) => for_attr,
None => return self.first_labelable_descendant(),
};
let for_value = for_attr.value();
document_from_node(self).get_element_by_id(for_value.as_atom())
.and_then(Root::downcast::<HTMLElement>)
.into_iter()
.filter(|e| e.is_labelable_element())
.next()
}
}
impl VirtualMethods for HTMLLabelElement {
fn super_type(&self) -> Option<&VirtualMethods> {
Some(self.upcast::<HTMLElement>() as &VirtualMethods)
}
fn parse_plain_attribute(&self, name: &Atom, value: DOMString) -> AttrValue {
match name {
&atom!("for") => AttrValue::from_atomic(value),
_ => self.super_type().unwrap().parse_plain_attribute(name, value),
}
}
}
impl HTMLLabelElement {
fn first_labelable_descendant(&self) -> Option<Root<HTMLElement>> {
self.upcast::<Node>()
.traverse_preorder()
.filter_map(Root::downcast::<HTMLElement>)
.filter(|elem| elem.is_labelable_element())
.next()
}
}
impl FormControl for HTMLLabelElement {}
|
