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
use std::ops::Deref;
use gloo::utils::window;
use yew::prelude::*;
use super::use_event_with_window;
/// State handle for the [`use_hash`] hook.
pub struct UseHashHandle {
inner: UseStateHandle<String>,
}
impl UseHashHandle {
pub fn set(&self, hash: String) {
if *self.inner != hash {
let _ = window().location().set_hash(hash.as_str());
}
}
}
impl Deref for UseHashHandle {
type Target = String;
fn deref(&self) -> &Self::Target {
&self.inner
}
}
impl Clone for UseHashHandle {
fn clone(&self) -> Self {
Self {
inner: self.inner.clone(),
}
}
}
impl PartialEq for UseHashHandle {
fn eq(&self, other: &Self) -> bool {
*self.inner == *other.inner
}
}
/// A sensor hook that tracks brower's location hash value.
///
/// # Example
///
/// ```rust
/// # use yew::prelude::*;
/// #
/// use yew_hooks::prelude::*;
///
/// #[function_component(UseHash)]
/// fn hash() -> Html {
/// let hash = use_hash();
///
/// let onclick = {
/// let hash = hash.clone();
/// Callback::from(move |_| {
/// hash.set("#/path/to/page?userId=123".to_string())
/// })
/// };
///
/// html! {
/// <>
/// <button {onclick}>{ "Set hash to #/path/to/page?userId=123" }</button>
/// <p>
/// <b>{ " Current hash: " }</b>
/// { &*hash }
/// </p>
/// </>
/// }
/// }
/// ```
#[hook]
pub fn use_hash() -> UseHashHandle {
let inner = use_state(|| window().location().hash().unwrap_or_default());
{
let inner = inner.clone();
use_event_with_window("hashchange", move |_: Event| {
inner.set(window().location().hash().unwrap_or_default());
});
}
UseHashHandle { inner }
}