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|
use std::iter::Iterator;
use termion::event::Key;
use tui::buffer::Buffer;
use tui::layout::Rect;
use tui::style::{Color, Style};
use tui::widgets::{Block, Borders, Clear, Widget};
use super::TuiView;
use crate::commands::{CommandKeybind, KeyCommand};
use crate::config::JoshutoCommandMapping;
use crate::context::JoshutoContext;
use crate::ui::TuiBackend;
use crate::util::event::Event;
use crate::util::worker;
const BORDER_HEIGHT: usize = 1;
const BOTTOM_MARGIN: usize = 1;
pub struct TuiCommandMenu;
trait ToString {
fn to_string(&self) -> String;
}
impl ToString for Key {
fn to_string(&self) -> String {
match *self {
Key::Char(c) => format!("{}", c),
Key::Ctrl(c) => format!("ctrl+{}", c),
Key::Left => format!("arrow_left"),
Key::Right => format!("arrow_right"),
Key::Up => format!("arrow_up"),
Key::Down => format!("arrow_down"),
Key::Backspace => format!("backspace"),
Key::Home => format!("home"),
Key::End => format!("end"),
Key::PageUp => format!("page_up"),
Key::PageDown => format!("page_down"),
Key::BackTab => format!("backtab"),
Key::Insert => format!("insert"),
Key::Delete => format!("delete"),
Key::Esc => format!("escape"),
Key::F(i) => format!("f{}", i),
k => format!("{:?}", k),
}
}
}
impl TuiCommandMenu {
pub fn new() -> Self {
Self {}
}
pub fn get_input<'a>(
&mut self,
backend: &mut TuiBackend,
context: &mut JoshutoContext,
m: &'a JoshutoCommandMapping,
) -> Option<&'a KeyCommand> {
let mut map: &JoshutoCommandMapping = &m;
let terminal = backend.terminal_mut();
context.flush_event();
loop {
terminal.draw(|frame| {
let f_size: Rect = frame.size();
{
let view = TuiView::new(&context);
frame.render_widget(view, f_size);
}
{
// draw menu
let mut display_vec: Vec<String> = map
.as_ref()
.iter()
.map(|(k, v)| format!(" {} {}", k.to_string(), v))
.collect();
display_vec.sort();
let display_str: Vec<&str> = display_vec.iter().map(|v| v.as_str()).collect();
let display_str_len = display_str.len();
let y = if (f_size.height as usize)
< display_str_len + BORDER_HEIGHT + BOTTOM_MARGIN
{
0
} else {
f_size.height
- (BORDER_HEIGHT + BOTTOM_MARGIN) as u16
- display_str_len as u16
};
let menu_rect = Rect {
x: 0,
y,
width: f_size.width,
height: (display_str_len + BORDER_HEIGHT) as u16,
};
frame.render_widget(Clear, menu_rect);
frame.render_widget(TuiMenu::new(&display_str), menu_rect);
}
});
if let Ok(event) = context.poll_event() {
match event {
Event::IOWorkerProgress(res) => {
worker::process_worker_progress(context, res);
}
Event::IOWorkerResult(res) => {
worker::process_finished_worker(context, res);
}
Event::Input(key) => {
match key {
Key::Esc => return None,
key => match map.as_ref().get(&key) {
Some(CommandKeybind::SimpleKeybind(s)) => {
return Some(s);
}
Some(CommandKeybind::CompositeKeybind(m)) => {
map = m;
}
None => return None,
},
}
context.flush_event();
}
}
}
}
}
}
pub struct TuiMenu<'a> {
options: &'a [&'a str],
}
impl<'a> TuiMenu<'a> {
pub fn new(options: &'a [&'a str]) -> Self {
Self { options }
}
pub fn len(&self) -> usize {
self.options.len()
}
}
impl<'a> Widget for TuiMenu<'a> {
fn render(self, area: Rect, buf: &mut Buffer) {
let text_iter = self.options.iter().chain(&[" "]);
let style = Style::default().fg(Color::Reset).bg(Color::Reset);
let area_x = area.x + 1;
let area_y = area.y + 1;
Block::default()
.style(style)
.borders(Borders::TOP)
.render(area, buf);
for (i, text) in text_iter.enumerate() {
buf.set_string(area_x, area_y + i as u16, text, style);
}
}
}
|
