requestty_ui/events/
crossterm.rs

1use std::convert::{TryFrom, TryInto};
2
3use crossterm::event;
4
5use super::EventIterator;
6
7/// An iterator over the input keys using the `crossterm` crate
8#[derive(Debug, Default)]
9#[cfg_attr(docsrs, doc(cfg(feature = "crossterm")))]
10#[non_exhaustive]
11pub struct CrosstermEvents {}
12
13impl CrosstermEvents {
14    /// Creates a new `CrosstermEvents`
15    pub fn new() -> Self {
16        Self {}
17    }
18}
19
20impl EventIterator for CrosstermEvents {
21    fn next_event(&mut self) -> std::io::Result<super::KeyEvent> {
22        loop {
23            if let event::Event::Key(k) = event::read()? {
24                if let Ok(k) = k.try_into() {
25                    return Ok(k);
26                }
27            }
28        }
29    }
30}
31
32impl TryFrom<event::KeyEvent> for super::KeyEvent {
33    type Error = ();
34
35    fn try_from(event: event::KeyEvent) -> Result<Self, ()> {
36        let code = match event.code {
37            event::KeyCode::Backspace => super::KeyCode::Backspace,
38            event::KeyCode::Enter => super::KeyCode::Enter,
39            event::KeyCode::Left => super::KeyCode::Left,
40            event::KeyCode::Right => super::KeyCode::Right,
41            event::KeyCode::Up => super::KeyCode::Up,
42            event::KeyCode::Down => super::KeyCode::Down,
43            event::KeyCode::Home => super::KeyCode::Home,
44            event::KeyCode::End => super::KeyCode::End,
45            event::KeyCode::PageUp => super::KeyCode::PageUp,
46            event::KeyCode::PageDown => super::KeyCode::PageDown,
47            event::KeyCode::Tab => super::KeyCode::Tab,
48            event::KeyCode::BackTab => super::KeyCode::BackTab,
49            event::KeyCode::Delete => super::KeyCode::Delete,
50            event::KeyCode::Insert => super::KeyCode::Insert,
51            event::KeyCode::F(f) => super::KeyCode::F(f),
52            event::KeyCode::Char(c) => super::KeyCode::Char(c),
53            event::KeyCode::Null => super::KeyCode::Null,
54            event::KeyCode::Esc => super::KeyCode::Esc,
55            _ => return Err(()),
56        };
57
58        let mut modifiers = super::KeyModifiers::empty();
59
60        if event.modifiers.contains(event::KeyModifiers::SHIFT) {
61            modifiers |= super::KeyModifiers::SHIFT;
62        }
63        if event.modifiers.contains(event::KeyModifiers::CONTROL) {
64            modifiers |= super::KeyModifiers::CONTROL;
65        }
66        if event.modifiers.contains(event::KeyModifiers::ALT) {
67            modifiers |= super::KeyModifiers::ALT;
68        }
69
70        Ok(super::KeyEvent { code, modifiers })
71    }
72}
requestty_ui/events/crossterm.rs

requestty_ui/events/
crossterm.rs
