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
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
|
/* 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::Attr;
use dom::bindings::codegen::Bindings::DOMTokenListBinding;
use dom::bindings::codegen::Bindings::DOMTokenListBinding::DOMTokenListMethods;
use dom::bindings::error::{Error, ErrorResult, Fallible};
use dom::bindings::reflector::{Reflector, reflect_dom_object};
use dom::bindings::root::{Dom, DomRoot};
use dom::bindings::str::DOMString;
use dom::element::Element;
use dom::node::window_from_node;
use dom_struct::dom_struct;
use html5ever::LocalName;
use servo_atoms::Atom;
use style::str::HTML_SPACE_CHARACTERS;
#[dom_struct]
pub struct DOMTokenList {
reflector_: Reflector,
element: Dom<Element>,
local_name: LocalName,
}
impl DOMTokenList {
pub fn new_inherited(element: &Element, local_name: LocalName) -> DOMTokenList {
DOMTokenList {
reflector_: Reflector::new(),
element: Dom::from_ref(element),
local_name: local_name,
}
}
pub fn new(element: &Element, local_name: &LocalName) -> DomRoot<DOMTokenList> {
let window = window_from_node(element);
reflect_dom_object(Box::new(DOMTokenList::new_inherited(element, local_name.clone())),
&*window,
DOMTokenListBinding::Wrap)
}
fn attribute(&self) -> Option<DomRoot<Attr>> {
self.element.get_attribute(&ns!(), &self.local_name)
}
fn check_token_exceptions(&self, token: &str) -> Fallible<Atom> {
match token {
"" => Err(Error::Syntax),
slice if slice.find(HTML_SPACE_CHARACTERS).is_some() => Err(Error::InvalidCharacter),
slice => Ok(Atom::from(slice)),
}
}
}
// https://dom.spec.whatwg.org/#domtokenlist
impl DOMTokenListMethods for DOMTokenList {
// https://dom.spec.whatwg.org/#dom-domtokenlist-length
fn Length(&self) -> u32 {
self.attribute().map_or(0, |attr| {
attr.value().as_tokens().len()
}) as u32
}
// https://dom.spec.whatwg.org/#dom-domtokenlist-item
fn Item(&self, index: u32) -> Option<DOMString> {
self.attribute().and_then(|attr| {
// FIXME(ajeffrey): Convert directly from Atom to DOMString
attr.value().as_tokens().get(index as usize).map(|token| DOMString::from(&**token))
})
}
// https://dom.spec.whatwg.org/#dom-domtokenlist-contains
fn Contains(&self, token: DOMString) -> bool {
let token = Atom::from(token);
self.attribute().map_or(false, |attr| {
attr.value()
.as_tokens()
.iter()
.any(|atom: &Atom| *atom == token)
})
}
// https://dom.spec.whatwg.org/#dom-domtokenlist-add
fn Add(&self, tokens: Vec<DOMString>) -> ErrorResult {
let mut atoms = self.element.get_tokenlist_attribute(&self.local_name);
for token in &tokens {
let token = self.check_token_exceptions(&token)?;
if !atoms.iter().any(|atom| *atom == token) {
atoms.push(token);
}
}
self.element.set_atomic_tokenlist_attribute(&self.local_name, atoms);
Ok(())
}
// https://dom.spec.whatwg.org/#dom-domtokenlist-remove
fn Remove(&self, tokens: Vec<DOMString>) -> ErrorResult {
let mut atoms = self.element.get_tokenlist_attribute(&self.local_name);
for token in &tokens {
let token = self.check_token_exceptions(&token)?;
atoms.iter().position(|atom| *atom == token).map(|index| atoms.remove(index));
}
self.element.set_atomic_tokenlist_attribute(&self.local_name, atoms);
Ok(())
}
// https://dom.spec.whatwg.org/#dom-domtokenlist-toggle
fn Toggle(&self, token: DOMString, force: Option<bool>) -> Fallible<bool> {
let mut atoms = self.element.get_tokenlist_attribute(&self.local_name);
let token = self.check_token_exceptions(&token)?;
match atoms.iter().position(|atom| *atom == token) {
Some(index) => match force {
Some(true) => Ok(true),
_ => {
atoms.remove(index);
self.element.set_atomic_tokenlist_attribute(&self.local_name, atoms);
Ok(false)
}
},
None => match force {
Some(false) => Ok(false),
_ => {
atoms.push(token);
self.element.set_atomic_tokenlist_attribute(&self.local_name, atoms);
Ok(true)
}
},
}
}
// https://dom.spec.whatwg.org/#dom-domtokenlist-value
fn Value(&self) -> DOMString {
self.element.get_string_attribute(&self.local_name)
}
// https://dom.spec.whatwg.org/#dom-domtokenlist-value
fn SetValue(&self, value: DOMString) {
self.element.set_tokenlist_attribute(&self.local_name, value);
}
// https://dom.spec.whatwg.org/#dom-domtokenlist-replace
fn Replace(&self, token: DOMString, new_token: DOMString) -> ErrorResult {
if token.is_empty() || new_token.is_empty() {
// Step 1.
return Err(Error::Syntax);
}
if token.contains(HTML_SPACE_CHARACTERS) || new_token.contains(HTML_SPACE_CHARACTERS) {
// Step 2.
return Err(Error::InvalidCharacter);
}
// Steps 3-4.
let token = Atom::from(token);
let new_token = Atom::from(new_token);
let mut atoms = self.element.get_tokenlist_attribute(&self.local_name);
if let Some(pos) = atoms.iter().position(|atom| *atom == token) {
if !atoms.contains(&new_token) {
atoms[pos] = new_token;
} else {
atoms.remove(pos);
}
// Step 5.
self.element.set_atomic_tokenlist_attribute(&self.local_name, atoms);
}
Ok(())
}
// https://dom.spec.whatwg.org/#concept-dtl-serialize
fn Stringifier(&self) -> DOMString {
self.element.get_string_attribute(&self.local_name)
}
// check-tidy: no specs after this line
fn IndexedGetter(&self, index: u32) -> Option<DOMString> {
self.Item(index)
}
}
|
