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use core::fmt;
use std::{
collections::HashMap,
sync::{Arc, Mutex},
};
use mlua::{Function, RegistryKey, Result};
use ratatui::crossterm::event::KeyEvent;
use crate::lua;
#[derive(Default, Clone)]
pub struct KeyMapStore {
store: Option<HashMap<KeyEvent, Arc<Mutex<dyn Runnable>>>>,
}
impl KeyMapStore {
pub const fn new() -> Self {
Self { store: None }
}
pub fn get(&mut self, event: KeyEvent) -> Option<Arc<Mutex<dyn Runnable>>> {
match &self.store {
Some(store) => match store.get(&event) {
Some(func) => Some(Arc::clone(func)),
None => None,
},
None => {
self.store = Some(HashMap::new());
None
}
}
}
pub fn map(&mut self, event: KeyEvent, func: impl Runnable + 'static) {
match &self.store {
Some(_) => {}
None => self.store = Some(HashMap::new()),
}
if let Some(store) = &mut self.store {
store.insert(event, Arc::new(Mutex::new(func)));
}
}
}
pub trait Runnable
where
Self: Send,
{
fn run(&self) -> Result<()>;
}
impl<T> Runnable for T
where
T: Fn(),
Self: Send,
{
fn run(&self) -> Result<()> {
self();
Ok(())
}
}
impl Runnable for RegistryKey
where
Self: Send,
{
fn run(&self) -> Result<()> {
let lua = lua::get();
let func: Function = lua.registry_value(self)?;
func.call::<(), ()>(())?;
Ok(())
}
}
impl fmt::Debug for KeyMapStore {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "KeyMapStore")
}
}
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