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
use crate::event::AnyCb;
use crate::view::{Selector, View, ViewWrapper};
use crate::Vec2;
use crate::With;
pub struct HideableView<V> {
view: V,
visible: bool,
invalidated: bool,
}
new_default!(HideableView<V: Default>);
impl<V> HideableView<V> {
pub fn new(view: V) -> Self {
HideableView {
view,
visible: true,
invalidated: true,
}
}
pub fn set_visible(&mut self, visible: bool) {
self.visible = visible;
self.invalidate();
}
pub fn hide(&mut self) {
self.set_visible(false);
}
pub fn unhide(&mut self) {
self.set_visible(true);
}
#[must_use]
pub fn hidden(self) -> Self {
self.with(Self::hide)
}
#[must_use]
pub fn visible(self, flag: bool) -> Self {
self.with(|s| s.set_visible(flag))
}
pub fn is_visible(&self) -> bool {
self.visible
}
fn invalidate(&mut self) {
self.invalidated = true;
}
inner_getters!(self.view: V);
}
impl<V: View> ViewWrapper for HideableView<V> {
type V = V;
fn with_view<F, R>(&self, f: F) -> Option<R>
where
F: FnOnce(&Self::V) -> R,
{
if self.visible {
Some(f(&self.view))
} else {
None
}
}
fn with_view_mut<F, R>(&mut self, f: F) -> Option<R>
where
F: FnOnce(&mut Self::V) -> R,
{
if self.visible {
Some(f(&mut self.view))
} else {
None
}
}
fn wrap_call_on_any<'a>(
&mut self,
selector: &Selector<'_>,
callback: AnyCb<'a>,
) {
self.view.call_on_any(selector, callback)
}
fn into_inner(self) -> Result<Self::V, Self>
where
Self: Sized,
Self::V: Sized,
{
Ok(self.view)
}
fn wrap_layout(&mut self, size: Vec2) {
self.invalidated = false;
self.with_view_mut(|v| v.layout(size));
}
fn wrap_needs_relayout(&self) -> bool {
self.invalidated || (self.visible && self.view.needs_relayout())
}
}