94 lines
2.6 KiB
Rust
94 lines
2.6 KiB
Rust
use crate::commands;
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use crate::{Editor, View};
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use crossterm::event::{KeyCode, KeyEvent, KeyModifiers};
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use std::string::String;
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pub struct Prompt {
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pub buffer: String,
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pub cursor_loc: usize,
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completion_fn: Box<dyn FnMut(&str) -> Option<Vec<&str>>>,
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callback_fn: Box<dyn FnMut(&mut Editor, &str)>,
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}
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impl Prompt {
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pub fn new(
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completion_fn: impl FnMut(&str) -> Option<Vec<&str>> + 'static,
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callback_fn: impl FnMut(&mut Editor, &str) + 'static,
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) -> Prompt {
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Prompt {
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buffer: String::from(""),
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cursor_loc: 0,
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completion_fn: Box::new(completion_fn),
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callback_fn: Box::new(callback_fn),
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}
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}
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pub fn insert_char(&mut self, c: char) {
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self.buffer.insert(self.cursor_loc, c);
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self.cursor_loc += 1;
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}
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pub fn move_char_left(&mut self) {
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if self.cursor_loc > 1 {
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self.cursor_loc -= 1;
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}
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}
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pub fn move_char_right(&mut self) {
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if self.cursor_loc < self.buffer.len() {
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self.cursor_loc += 1;
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}
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}
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pub fn move_start(&mut self) {
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self.cursor_loc = 0;
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}
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pub fn move_end(&mut self) {
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self.cursor_loc = self.buffer.len();
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}
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pub fn delete_char_backwards(&mut self) {
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if self.cursor_loc > 0 {
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self.buffer.remove(self.cursor_loc - 1);
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self.cursor_loc -= 1;
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}
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}
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pub fn handle_input(&mut self, key_event: KeyEvent, editor: &mut Editor) {
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match key_event {
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KeyEvent {
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code: KeyCode::Char(c),
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modifiers: KeyModifiers::NONE,
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} => self.insert_char(c),
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KeyEvent {
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code: KeyCode::Esc, ..
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} => unimplemented!("Exit prompt!"),
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KeyEvent {
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code: KeyCode::Right,
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..
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} => self.move_char_right(),
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KeyEvent {
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code: KeyCode::Left,
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..
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} => self.move_char_left(),
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KeyEvent {
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code: KeyCode::Char('e'),
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modifiers: KeyModifiers::CONTROL,
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} => self.move_end(),
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KeyEvent {
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code: KeyCode::Char('a'),
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modifiers: KeyModifiers::CONTROL,
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} => self.move_start(),
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KeyEvent {
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code: KeyCode::Backspace,
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..
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} => self.delete_char_backwards(),
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KeyEvent {
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code: KeyCode::Enter,
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..
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} => (self.callback_fn)(editor, &self.buffer),
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_ => (),
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}
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}
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}
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