blob: 3eb455c07485b1c2dea9923b2c2efc2f7dbe31a0 (
plain)
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
|
use iced::Element;
use crate::traits::Focusable;
use super::{Message, Navigation};
pub enum SetOptionsResult<TOption> {
SetOptionsAndKeptSelection,
SetOptionsAndSetSelectedOption(TOption),
}
impl<'a, TOption> Navigation<TOption>
where
TOption: Clone + Focusable + PartialEq + 'a,
Element<'a, Message<TOption>>: From<&'a TOption>,
{
pub fn set_options(&mut self, options: &mut Vec<TOption>) -> SetOptionsResult<TOption> {
options.iter_mut().for_each(TOption::unfocus);
let active_option_index =
self.active_option
.clone()
.map_or(Option::None, |active_option| {
options
.iter()
.position(|option| active_option == option.clone())
});
if let Some(active_option_index) = active_option_index {
let split = options.split_at(active_option_index);
self.options_before_active = split.0.to_vec();
self.options_after_active = split.1.split_at(1).1.to_vec();
SetOptionsResult::SetOptionsAndKeptSelection
} else {
self.options_before_active = options
.split_last()
.map_or_else(Vec::new, |(_last, rest)| rest.to_vec());
self.active_option = options.last().cloned();
self.active_option.iter_mut().for_each(TOption::focus);
options.last().cloned().map_or(
SetOptionsResult::SetOptionsAndKeptSelection,
SetOptionsResult::SetOptionsAndSetSelectedOption,
)
}
}
}
|
