teehee/modes/
jumpto.rs

1use std::borrow::Cow;
2use std::collections::HashMap;
3
4use crossterm::event::{Event, KeyCode, KeyEvent, KeyModifiers};
5use lazy_static::lazy_static;
6
7use crate::keymap::KeyMap;
8use crate::modes::{
9    mode::{Mode, ModeTransition},
10    normal::Normal,
11};
12use crate::selection::Direction;
13use crate::Buffers;
14
15#[derive(Debug, PartialEq, Eq, Clone, Copy)]
16pub struct JumpTo {
17    pub extend: bool,
18}
19
20fn default_maps() -> KeyMap<Direction> {
21    KeyMap {
22        maps: keys!(
23            (key KeyCode::Left => Direction::Left),
24            ('h' => Direction::Left),
25            (key KeyCode::Down => Direction::Down),
26            ('j' => Direction::Down),
27            (key KeyCode::Up => Direction::Up),
28            ('k' => Direction::Up),
29            (key KeyCode::Right => Direction::Right),
30            ('l' => Direction::Right)
31        ),
32    }
33}
34
35lazy_static! {
36    static ref DEFAULT_MAPS: KeyMap<Direction> = default_maps();
37}
38
39impl Mode for JumpTo {
40    fn name(&self) -> Cow<'static, str> {
41        if self.extend {
42            "EXTEND".into()
43        } else {
44            "JUMP".into()
45        }
46    }
47
48    fn transition(
49        &self,
50        evt: &Event,
51        buffers: &mut Buffers,
52        bytes_per_line: usize,
53    ) -> Option<ModeTransition> {
54        let buffer = buffers.current_mut();
55        if let Some(direction) = DEFAULT_MAPS.event_to_action(evt) {
56            let max_bytes = buffer.data.len();
57            Some(ModeTransition::new_mode_and_dirty(
58                Normal::new(),
59                if self.extend {
60                    buffer.map_selections(|region| {
61                        vec![region.extend_to_boundary(direction, bytes_per_line, max_bytes)]
62                    })
63                } else {
64                    buffer.map_selections(|region| {
65                        vec![region.jump_to_boundary(direction, bytes_per_line, max_bytes)]
66                    })
67                },
68            ))
69        } else if let Event::Key(_) = evt {
70            Some(ModeTransition::new_mode(Normal::new()))
71        } else {
72            None
73        }
74    }
75
76    fn as_any(&self) -> &dyn std::any::Any {
77        self
78    }
79}
teehee/modes/jumpto.rs

teehee/modes/
jumpto.rs
