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use serde_derive::Deserialize;
use std::collections::{hash_map::Entry, HashMap};
use std::convert::{AsMut, AsRef, From};
use std::str::FromStr;
#[cfg(feature = "mouse")]
use termion::event::MouseEvent;
use termion::event::{Event, Key};
use crate::config::{parse_to_config_file, TomlConfigFile};
use crate::error::JoshutoResult;
use crate::io::IoWorkerOptions;
use crate::key_command::{Command, CommandKeybind};
use crate::util::keyparse::str_to_event;
use super::default_keymap::DEFAULT_KEYMAP;
#[derive(Debug, Deserialize)]
struct CommandKeymap {
pub command: String,
pub keys: Vec<String>,
}
#[derive(Debug, Deserialize)]
struct AppKeyMappingCrude {
#[serde(default)]
pub mapcommand: Vec<CommandKeymap>,
}
#[derive(Debug)]
pub struct AppKeyMapping {
map: HashMap<Event, CommandKeybind>,
}
impl AppKeyMapping {
pub fn new() -> Self {
Self {
map: HashMap::new(),
}
}
pub fn default_res() -> JoshutoResult<Self> {
let crude: AppKeyMappingCrude = toml::from_str(DEFAULT_KEYMAP)?;
let keymapping: Self = Self::from(crude);
Ok(keymapping)
}
}
impl AsRef<HashMap<Event, CommandKeybind>> for AppKeyMapping {
fn as_ref(&self) -> &HashMap<Event, CommandKeybind> {
&self.map
}
}
impl AsMut<HashMap<Event, CommandKeybind>> for AppKeyMapping {
fn as_mut(&mut self) -> &mut HashMap<Event, CommandKeybind> {
&mut self.map
}
}
impl From<AppKeyMappingCrude> for AppKeyMapping {
fn from(crude: AppKeyMappingCrude) -> Self {
let mut keymaps = Self::new();
for m in crude.mapcommand {
match Command::from_str(m.command.as_str()) {
Ok(command) => {
let events: Vec<Event> = m
.keys
.iter()
.filter_map(|s| str_to_event(s.as_str()))
.collect();
if events.len() != m.keys.len() {
eprintln!("Failed to parse events: {:?}", m.keys);
continue;
}
let result = insert_keycommand(&mut keymaps, command, &events);
match result {
Ok(_) => {}
Err(e) => eprintln!("{}", e),
}
}
Err(e) => eprintln!("{}", e),
}
}
keymaps
}
}
impl TomlConfigFile for AppKeyMapping {
fn get_config(file_name: &str) -> Self {
parse_to_config_file::<AppKeyMappingCrude, AppKeyMapping>(file_name)
.unwrap_or_else(Self::default)
}
}
impl std::default::Default for AppKeyMapping {
fn default() -> Self {
AppKeyMapping::default_res().unwrap()
}
}
fn insert_keycommand(
keymap: &mut AppKeyMapping,
keycommand: Command,
events: &[Event],
) -> Result<(), String> {
let num_events = events.len();
if num_events == 0 {
return Ok(());
}
let event = events[0].clone();
if num_events == 1 {
match keymap.as_mut().entry(event) {
Entry::Occupied(_) => {
return Err(format!("Error: Keybindings ambiguous for {}", keycommand))
}
Entry::Vacant(entry) => entry.insert(CommandKeybind::SimpleKeybind(keycommand)),
};
return Ok(());
}
match keymap.as_mut().entry(event) {
Entry::Occupied(mut entry) => match entry.get_mut() {
CommandKeybind::CompositeKeybind(ref mut m) => {
insert_keycommand(m, keycommand, &events[1..])
}
_ => Err(format!("Error: Keybindings ambiguous for {}", keycommand)),
},
Entry::Vacant(entry) => {
let mut new_map = AppKeyMapping::new();
let result = insert_keycommand(&mut new_map, keycommand, &events[1..]);
if result.is_ok() {
let composite_command = CommandKeybind::CompositeKeybind(new_map);
entry.insert(composite_command);
}
result
}
}
}
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