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
129
130
131
132
133

use crate::action::{Action, Props, StatefulAction, VISUAL};
use crate::comm::{QWriter, Signal};
use crate::gui::{style_ui, Style};
use crate::resource::{IoManager, ResourceManager};
use crate::server::{AsyncSignal, Config, State, SyncSignal};
use eframe::egui;
use egui_extras::{Size, StripBuilder};
use eyre::Result;
use serde::{Deserialize, Serialize};

#[derive(Debug, Deserialize, Serialize)]
#[serde(deny_unknown_fields)]
pub struct Counter(#[serde(default = "defaults::from")] u32);

stateful!(Counter { count: u32 });

mod defaults {
    #[inline(always)]
    pub fn from() -> u32 {
        3
    }
}

impl From<u32> for Counter {
    fn from(i: u32) -> Self {
        Self(i)
    }
}

impl Action for Counter {
    fn stateful(
        &self,
        _io: &IoManager,
        _res: &ResourceManager,
        _config: &Config,
        _sync_writer: &QWriter<SyncSignal>,
        _async_writer: &QWriter<AsyncSignal>,
    ) -> Result<Box<dyn StatefulAction>> {
        Ok(Box::new(StatefulCounter {
            done: false,
            count: self.0,
        }))
    }
}

impl StatefulAction for StatefulCounter {
    impl_stateful!();

    #[inline(always)]
    fn props(&self) -> Props {
        VISUAL.into()
    }

    fn start(
        &mut self,
        sync_writer: &mut QWriter<SyncSignal>,
        _async_writer: &mut QWriter<AsyncSignal>,
        _state: &State,
    ) -> Result<Signal> {
        if self.count == 0 {
            self.done = true;
            sync_writer.push(SyncSignal::UpdateGraph);
        } else {
            sync_writer.push(SyncSignal::Repaint);
        }

        Ok(Signal::none())
    }

    fn show(
        &mut self,
        ui: &mut egui::Ui,
        sync_writer: &mut QWriter<SyncSignal>,
        _async_writer: &mut QWriter<AsyncSignal>,
        _state: &State,
    ) -> Result<()> {
        enum Interaction {
            None,
            Decrement,
        }

        let mut interaction = Interaction::None;

        let button = egui::Button::new(format!("Click me {} more times", self.count));

        StripBuilder::new(ui)
            .size(Size::remainder())
            .size(Size::exact(420.0))
            .size(Size::remainder())
            .horizontal(|mut strip| {
                strip.empty();
                strip.strip(|builder| {
                    builder
                        .size(Size::remainder())
                        .size(Size::exact(80.0))
                        .size(Size::remainder())
                        .vertical(|mut strip| {
                            strip.empty();
                            strip.cell(|ui| {
                                ui.centered_and_justified(|ui| {
                                    style_ui(ui, Style::SelectButton);
                                    if ui.add(button).clicked() {
                                        interaction = Interaction::Decrement;
                                    }
                                });
                            });
                            strip.empty();
                        });
                });
                strip.empty();
            });

        match interaction {
            Interaction::None => {}
            Interaction::Decrement => {
                self.count = self.count.saturating_sub(1);
                if self.count == 0 {
                    self.done = true;
                    sync_writer.push(SyncSignal::UpdateGraph);
                }
            }
        }

        Ok(())
    }

    fn debug(&self) -> Vec<(&str, String)> {
        <dyn StatefulAction>::debug(self)
            .into_iter()
            .chain([("count", format!("{:?}", self.count))])
            .collect()
    }
}