mirrors/tui-textarea
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зеркало из https://github.com/glebtv/tui-textarea.git synced 2026-09-03 22:35:50 +03:00
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implement visual mode for vim example

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Этот коммит содержится в:
rhysd
2023-11-16 18:15:56 +09:00
родитель 409185f653
Коммит ad8ad19e83
1 изменённых файлов: 128 добавлений и 44 удалений
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172
examples/vim.rs
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@@ -13,9 +13,11 @@ use std::io;
use std::io::BufRead;
use tui_textarea::{CursorMove, Input, Key, Scrolling, TextArea};
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
enum Mode {
Normal,
Insert,
Visual,
}
impl Mode {
@@ -23,6 +25,7 @@ impl Mode {
match self {
Self::Normal => "type q to quit, type i to enter insert mode",
Self::Insert => "type Esc to back to normal mode",
Self::Visual => "type y to yank, type d to delete, type Esc to back to normal mode",
}
}
@@ -30,6 +33,7 @@ impl Mode {
match self {
Self::Normal => Color::Reset,
Self::Insert => Color::LightBlue,
Self::Visual => Color::LightYellow,
}
}
}
@@ -39,6 +43,7 @@ impl fmt::Display for Mode {
match self {
Self::Normal => write!(f, "NORMAL"),
Self::Insert => write!(f, "INSERT"),
Self::Visual => write!(f, "VISUAL"),
}
}
}
@@ -63,7 +68,7 @@ impl PendingState {
}
}
fn transition(self, input: &Input) -> Option<Self> {
fn transition(self, input: &Input, mode: Mode) -> Option<Self> {
match input {
Input { key: Key::Null, .. } => None,
Input {
@@ -75,17 +80,17 @@ impl PendingState {
key: Key::Char('d'),
ctrl: false,
..
} if self != Self::D => Some(Self::D),
} if self != Self::D && mode == Mode::Normal => Some(Self::D),
Input {
key: Key::Char('y'),
ctrl: false,
..
} if self != Self::Y => Some(Self::Y),
} if self != Self::Y && mode == Mode::Normal => Some(Self::Y),
Input {
key: Key::Char('c'),
ctrl: false,
..
} if self != Self::C => Some(Self::C),
} if self != Self::C && mode == Mode::Normal => Some(Self::C),
_ => Some(Self::None),
}
}
@@ -127,65 +132,93 @@ fn main() -> io::Result<()> {
let input = crossterm::event::read()?.into();
if pending.operator().is_some() && !textarea.is_selecting() {
if pending.operator().is_some() && mode != Mode::Visual {
textarea.start_selection();
}
let next_pending = pending.transition(&input); // Calculate next state before moving `input`
// Calculate next pending key state before moving `input`
let next_pending = pending.transition(&input, mode);
match mode {
Mode::Normal => match input {
mode = match mode {
Mode::Normal | Mode::Visual => match input {
// Mappings in normal mode
Input {
key: Key::Char('h'),
..
} => textarea.move_cursor(CursorMove::Back),
} => {
textarea.move_cursor(CursorMove::Back);
mode
}
Input {
key: Key::Char('j'),
..
} => textarea.move_cursor(CursorMove::Down),
} => {
textarea.move_cursor(CursorMove::Down);
mode
}
Input {
key: Key::Char('k'),
..
} => textarea.move_cursor(CursorMove::Up),
} => {
textarea.move_cursor(CursorMove::Up);
mode
}
Input {
key: Key::Char('l'),
..
} => textarea.move_cursor(CursorMove::Forward),
} => {
textarea.move_cursor(CursorMove::Forward);
mode
}
Input {
key: Key::Char('w'),
..
} => textarea.move_cursor(CursorMove::WordForward),
} => {
textarea.move_cursor(CursorMove::WordForward);
mode
}
Input {
key: Key::Char('b'),
ctrl: false,
..
} => textarea.move_cursor(CursorMove::WordBack),
} => {
textarea.move_cursor(CursorMove::WordBack);
mode
}
Input {
key: Key::Char('^'),
..
} => textarea.move_cursor(CursorMove::Head),
} => {
textarea.move_cursor(CursorMove::Head);
mode
}
Input {
key: Key::Char('$'),
..
} => textarea.move_cursor(CursorMove::End),
} => {
textarea.move_cursor(CursorMove::End);
mode
}
Input {
key: Key::Char('D'),
..
} => {
textarea.delete_line_by_end();
Mode::Normal
}
Input {
key: Key::Char('C'),
..
} => {
textarea.delete_line_by_end();
mode = Mode::Insert;
textarea.cancel_selection();
Mode::Insert
}
Input {
key: Key::Char('p'),
..
} => {
textarea.paste();
Mode::Normal
}
Input {
key: Key::Char('u'),
@@ -193,6 +226,7 @@ fn main() -> io::Result<()> {
..
} => {
textarea.undo();
Mode::Normal
}
Input {
key: Key::Char('r'),
@@ -200,30 +234,37 @@ fn main() -> io::Result<()> {
..
} => {
textarea.redo();
Mode::Normal
}
Input {
key: Key::Char('x'),
..
} => {
textarea.delete_next_char();
Mode::Normal
}
Input {
key: Key::Char('i'),
..
} => mode = Mode::Insert,
} => {
textarea.cancel_selection();
Mode::Insert
}
Input {
key: Key::Char('a'),
..
} => {
textarea.cancel_selection();
textarea.move_cursor(CursorMove::Forward);
mode = Mode::Insert;
Mode::Insert
}
Input {
key: Key::Char('A'),
..
} => {
textarea.cancel_selection();
textarea.move_cursor(CursorMove::End);
mode = Mode::Insert;
Mode::Insert
}
Input {
key: Key::Char('o'),
@@ -231,7 +272,7 @@ fn main() -> io::Result<()> {
} => {
textarea.move_cursor(CursorMove::End);
textarea.insert_newline();
mode = Mode::Insert;
Mode::Insert
}
Input {
key: Key::Char('O'),
@@ -240,14 +281,15 @@ fn main() -> io::Result<()> {
textarea.move_cursor(CursorMove::Head);
textarea.insert_newline();
textarea.move_cursor(CursorMove::Up);
mode = Mode::Insert;
Mode::Insert
}
Input {
key: Key::Char('I'),
..
} => {
textarea.cancel_selection();
textarea.move_cursor(CursorMove::Head);
mode = Mode::Insert;
Mode::Insert
}
Input {
key: Key::Char('q'),
@@ -257,53 +299,84 @@ fn main() -> io::Result<()> {
key: Key::Char('e'),
ctrl: true,
..
} => textarea.scroll((1, 0)),
} => {
textarea.scroll((1, 0));
mode
}
Input {
key: Key::Char('y'),
ctrl: true,
..
} => textarea.scroll((-1, 0)),
} => {
textarea.scroll((-1, 0));
mode
}
Input {
key: Key::Char('d'),
ctrl: true,
..
} => textarea.scroll(Scrolling::HalfPageDown),
} => {
textarea.scroll(Scrolling::HalfPageDown);
mode
}
Input {
key: Key::Char('u'),
ctrl: true,
..
} => textarea.scroll(Scrolling::HalfPageUp),
} => {
textarea.scroll(Scrolling::HalfPageUp);
mode
}
Input {
key: Key::Char('f'),
ctrl: true,
..
} => textarea.scroll(Scrolling::PageDown),
} => {
textarea.scroll(Scrolling::PageDown);
mode
}
Input {
key: Key::Char('b'),
ctrl: true,
..
} => textarea.scroll(Scrolling::PageUp),
} => {
textarea.scroll(Scrolling::PageUp);
mode
}
Input {
key: Key::Char('v'),
ctrl: false,
..
} => textarea.start_selection(),
} if mode == Mode::Normal => {
textarea.start_selection();
Mode::Visual
}
Input {
key: Key::Char('V'),
ctrl: false,
..
} => {
} if mode == Mode::Normal => {
textarea.move_cursor(CursorMove::Head);
textarea.start_selection();
textarea.move_cursor(CursorMove::End);
Mode::Visual
}
Input { key: Key::Esc, .. }
| Input {
key: Key::Char('v'),
ctrl: false,
..
} if mode == Mode::Visual => {
textarea.cancel_selection();
Mode::Normal
}
Input { key: Key::Esc, .. } => textarea.cancel_selection(),
Input {
key: Key::Char('g'),
ctrl: false,
..
} if pending == PendingState::G => {
textarea.move_cursor(CursorMove::Top);
mode
}
Input {
key: Key::Char('G'),
@@ -311,6 +384,7 @@ fn main() -> io::Result<()> {
..
} => {
textarea.move_cursor(CursorMove::Bottom);
mode
}
Input {
key: Key::Char(c),
@@ -325,28 +399,33 @@ fn main() -> io::Result<()> {
if cursor == textarea.cursor() {
textarea.move_cursor(CursorMove::End); // At the last line, move to end of the line instead
}
mode
}
Input {
key: Key::Char('y'),
ctrl: false,
..
} if textarea.is_selecting() => textarea.copy(),
} if mode == Mode::Visual => {
textarea.copy();
Mode::Normal
}
Input {
key: Key::Char('d'),
ctrl: false,
..
} if textarea.is_selecting() => {
} if mode == Mode::Visual => {
textarea.cut();
Mode::Normal
}
Input {
key: Key::Char('c'),
ctrl: false,
..
} if textarea.is_selecting() => {
} if mode == Mode::Visual => {
textarea.cut();
mode = Mode::Insert;
Mode::Insert
}
_ => {}
_ => mode,
},
Mode::Insert => match input {
Input { key: Key::Esc, .. }
@@ -355,26 +434,31 @@ fn main() -> io::Result<()> {
ctrl: true,
..
} => {
mode = Mode::Normal; // Back to normal mode with Esc or Ctrl+C
Mode::Normal // Back to normal mode with Esc or Ctrl+C
}
input => {
textarea.input(input); // Use default key mappings in insert mode
mode
}
},
}
};
if let Some(next_pending) = next_pending {
match pending {
mode = match pending {
PendingState::D => {
textarea.cut();
Mode::Normal
}
PendingState::Y => {
textarea.copy();
Mode::Normal
}
PendingState::Y => textarea.copy(),
PendingState::C => {
textarea.cut();
mode = Mode::Insert;
Mode::Insert
}
_ => {}
}
_ => mode,
};
pending = next_pending;
}
}