relm4 0.11.0

An idiomatic GUI library inspired by Elm and based on gtk4-rs
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

use crate::factory::{DynamicIndex, FactoryView};

use super::AsyncFactoryBuilder;
use super::AsyncFactoryHandle;
use super::traits::AsyncFactoryComponent;

#[derive(Debug)]
pub(super) enum AsyncComponentStorage<C: AsyncFactoryComponent>
where
    <C::ParentWidget as FactoryView>::ReturnedWidget: Clone,
{
    Builder(AsyncFactoryBuilder<C>),
    Final(AsyncFactoryHandle<C>),
}

impl<C: AsyncFactoryComponent> AsyncComponentStorage<C>
where
    <C::ParentWidget as FactoryView>::ReturnedWidget: Clone,
{
    pub(super) fn get(&self) -> Option<&C> {
        match self {
            Self::Builder(_) => None,
            Self::Final(handle) => handle.data.get(),
        }
    }

    pub(super) fn get_mut(&mut self) -> Option<&mut C> {
        match self {
            Self::Builder(_) => None,
            Self::Final(handle) => handle.data.get_mut(),
        }
    }

    pub(super) const fn widget(&self) -> &C::Root {
        match self {
            Self::Builder(builder) => &builder.root_widget,
            Self::Final(handle) => &handle.root_widget,
        }
    }

    pub(super) fn send(&self, msg: C::Input) {
        match self {
            Self::Builder(builder) => builder.component_sender.input(msg),
            Self::Final(handle) => handle.input.send(msg).unwrap(),
        }
    }

    pub(super) fn state_change_notify(&self) {
        if let Self::Final(handle) = self {
            handle.notifier.send(()).unwrap();
        }
    }

    pub(super) fn extract(self) -> Option<C> {
        match self {
            Self::Builder(_) => None,
            Self::Final(handle) => handle.data.into_inner(),
        }
    }

    pub(super) fn launch(
        self,
        index: &DynamicIndex,
        returned_widget: <C::ParentWidget as FactoryView>::ReturnedWidget,
    ) -> Option<Self> {
        if let Self::Builder(builder) = self {
            Some(Self::Final(builder.launch(index, returned_widget)))
        } else {
            None
        }
    }

    pub(super) const fn returned_widget(
        &self,
    ) -> Option<&<C::ParentWidget as FactoryView>::ReturnedWidget> {
        if let Self::Final(handle) = self {
            Some(&handle.returned_widget)
        } else {
            None
        }
    }
}