94 lines
2.3 KiB
Rust
94 lines
2.3 KiB
Rust
use crossterm::event::{Event, KeyCode, KeyEvent, KeyModifiers};
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use crate::widget::Widget;
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#[derive(Debug, Clone)]
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pub struct InputState {
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pub text: String,
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pub cursor: usize,
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}
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impl InputState {
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pub fn new() -> Self {
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Self {
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text: String::new(),
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cursor: 0,
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}
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}
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}
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pub struct Input<'a>(pub &'a str, pub &'a InputState);
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impl<'a> Widget for Input<'a> {
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fn render(&self, scope: &mut crate::render::RenderScope) {
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let mut text = self.1.text.clone();
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text.insert_str(self.1.cursor, "❘");
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scope.draw_text(0, format!("{}{text}", self.0));
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}
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}
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impl InputState {
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pub fn handle_event(&mut self, event: &Event) -> bool {
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match event {
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Event::Key(KeyEvent {
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code: KeyCode::Left,
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..
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}) => {
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if self.cursor > 0 {
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self.cursor -= 1;
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}
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true
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}
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Event::Key(KeyEvent {
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code: KeyCode::Right,
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..
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}) => {
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if self.cursor < self.text.len() {
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self.cursor += 1;
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}
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true
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}
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Event::Key(KeyEvent {
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code: KeyCode::Backspace,
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..
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}) => {
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if self.cursor > 0 {
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let prev = self.text[..self.cursor]
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.char_indices()
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.last()
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.map(|(i, _)| i)
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.unwrap();
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self.text.remove(prev);
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self.cursor = prev;
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}
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true
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}
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Event::Key(KeyEvent {
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code: KeyCode::Char(c),
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modifiers,
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..
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}) => {
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if !modifiers.contains(KeyModifiers::CONTROL)
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&& !modifiers.contains(KeyModifiers::ALT)
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{
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self.text.insert(self.cursor, *c);
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self.cursor += c.len_utf8();
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}
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true
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}
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Event::Paste(content) => {
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self.text.insert_str(self.cursor, content);
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self.cursor += content.len();
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true
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}
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_ => false,
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}
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}
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}
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