yew_stdweb/virtual_dom/
key.rs

1//! This module contains the implementation yew's virtual nodes' keys.
2
3use crate::html::ImplicitClone;
4use std::fmt::{self, Display, Formatter};
5use std::ops::Deref;
6use std::rc::Rc;
7
8/// Represents the (optional) key of Yew's virtual nodes.
9///
10/// Keys are cheap to clone.
11#[derive(Clone, Debug, Ord, PartialOrd, Eq, PartialEq, Hash)]
12pub struct Key {
13    key: Rc<str>,
14}
15
16impl Display for Key {
17    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
18        self.key.fmt(f)
19    }
20}
21
22impl Deref for Key {
23    type Target = str;
24
25    fn deref(&self) -> &str {
26        self.key.as_ref()
27    }
28}
29
30impl From<Rc<str>> for Key {
31    fn from(key: Rc<str>) -> Self {
32        Self { key }
33    }
34}
35
36impl From<&'_ str> for Key {
37    fn from(key: &'_ str) -> Self {
38        let key: Rc<str> = Rc::from(key);
39        Self::from(key)
40    }
41}
42
43impl ImplicitClone for Key {}
44
45macro_rules! key_impl_from_to_string {
46    ($type:ty) => {
47        impl From<$type> for Key {
48            fn from(key: $type) -> Self {
49                Self::from(key.to_string().as_str())
50            }
51        }
52    };
53}
54
55key_impl_from_to_string!(String);
56key_impl_from_to_string!(char);
57key_impl_from_to_string!(u8);
58key_impl_from_to_string!(u16);
59key_impl_from_to_string!(u32);
60key_impl_from_to_string!(u64);
61key_impl_from_to_string!(u128);
62key_impl_from_to_string!(usize);
63key_impl_from_to_string!(i8);
64key_impl_from_to_string!(i16);
65key_impl_from_to_string!(i32);
66key_impl_from_to_string!(i64);
67key_impl_from_to_string!(i128);
68key_impl_from_to_string!(isize);
69
70#[cfg(test)]
71mod test {
72    use crate::html;
73    use std::rc::Rc;
74
75    #[cfg(feature = "wasm_test")]
76    use wasm_bindgen_test::{wasm_bindgen_test as test, wasm_bindgen_test_configure};
77
78    #[cfg(feature = "wasm_test")]
79    wasm_bindgen_test_configure!(run_in_browser);
80
81    #[test]
82    fn all_key_conversions() {
83        html! {
84            <key="string literal">
85                <img key="String".to_owned() />
86                <p key=Rc::<str>::from("rc")></p>
87                <key='a'>
88                    <p key=11_usize></p>
89                    <p key=12_u8></p>
90                    <p key=13_u16></p>
91                    <p key=14_u32></p>
92                    <p key=15_u64></p>
93                    <p key=15_u128></p>
94                    <p key=21_isize></p>
95                    <p key=22_i8></p>
96                    <p key=23_i16></p>
97                    <p key=24_i32></p>
98                    <p key=25_i128></p>
99                </>
100            </>
101        };
102    }
103}
yew_stdweb/virtual_dom/key.rs

yew_stdweb/virtual_dom/
key.rs
