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use crossterm::{
cursor,
event::{
self,
Event,
KeyCode
},
execute,
terminal
};
use std::io::{self, Write};
use colorized::*;
pub enum Colour {
Blue,
Black,
Cyan,
Green,
Magenta,
Red,
White,
Yellow,
Default,
}
pub struct Xmenu{
options: Vec<String>,
}
impl Xmenu {
pub fn new() -> Self {
Self{
options: Vec::new()
}
}
pub fn add(&mut self, option: &str) {
self.options.push(option.to_string());
}
pub fn remove(&mut self, option:&str) {
let mut new = Vec::new();
for x in &self.options{
if x!=option {
new.push(x.to_string());
}
}
self.options = new;
}
pub fn run(&mut self, c: Colour) -> String {
let col = match c {
Colour::Black => "black",
Colour::Blue => "blue",
Colour::Cyan => "cyan",
Colour::Green => "green",
Colour::Magenta => "magenta",
Colour::Red => "red",
Colour::White => "white",
Colour::Yellow => "yellow",
Colour::Default => "none",
};
let mut stdout = io::stdout();
// set terminal to raw mode
terminal::enable_raw_mode().expect("Error turning on raw mode.");
execute!(stdout, cursor::Hide).expect("Failed to hide cursor");
// get menu items
let menu_items = self.options.clone();
self.options.push("Abort".to_string()); // update for result
let mut selected_index: usize = 0;
// save current cursor position
let (orig_x, orig_y) = cursor::position().expect("Failed to get current cursor position");
let menu_height = menu_items.len() as u16;
// Draw the initial menu
Xmenu::draw_menu(&menu_items, selected_index, orig_x.clone(), orig_y.clone(), col);
loop {
if let Event::Key(key_event) = event::read().expect("Failed to read key") {
match key_event.code {
KeyCode::Up => {
if selected_index > 0 {
selected_index -= 1;
}
}
KeyCode::Down => {
if selected_index < menu_items.len()-1 {
selected_index += 1;
}
}
KeyCode::Enter => {
break;
}
KeyCode::Esc => {
selected_index = menu_items.len(); // indicate cancellation
break;
}
_ => {}
}
// redraw the menu
Xmenu::draw_menu(&menu_items, selected_index, orig_x.clone(), orig_y.clone() - menu_height, col);
}
}
// restore the cursor position and show it.
execute!(stdout, cursor::MoveTo(orig_x, orig_y + menu_height), cursor::Show).expect("Failed to restore terminal");
terminal::disable_raw_mode().expect("Failed to disable raw mode");
return self.options[selected_index].clone();
}
// fn draw_menu(menu_items: &Vec<String>, selected_index: usize, x: u16, y: u16, c: &str) {
// let mut stdout = io::stdout();
// for (i, item) in menu_items.iter().enumerate() {
// let msg = "Failed to insert menu item ".to_string() + &i.to_string();
// execute!(stdout, cursor::MoveTo(x, y+i as u16)).expect(&msg);
// if i == selected_index {
// if c == "red" {
// writeln!(stdout, "> {}", item.color(Colors::RedFg)).expect("Failed to update menu item.");
// } else if c == "yellow" {
// writeln!(stdout, "> {}", item.color(Colors::YellowFg)).expect("Failed to update menu item.");
// } else if c == "green" {
// writeln!(stdout, "> {}", item.color(Colors::GreenFg)).expect("Failed to update menu item.");
// } else if c == "cyan" {
// writeln!(stdout, "> {}", item.color(Colors::CyanFg)).expect("Failed to update menu item.");
// } else if c == "magenta" {
// writeln!(stdout, "> {}", item.color(Colors::MagentaFg)).expect("Failed to update menu item.");
// } else if c == "blue" {
// writeln!(stdout, "> {}", item.color(Colors::BlueFg)).expect("Failed to update menu item.");
// } else if c == "black" {
// writeln!(stdout, "> {}", item.color(Colors::BlackFg)).expect("Failed to update menu item.");
// } else if c == "white" {
// writeln!(stdout, "> {}", item.color(Colors::WhiteFg)).expect("Failed to update menu item.");
// } else {
// writeln!(stdout, "> {}", item).expect("Failed to update menu item.");
// }
// } else {
// writeln!(stdout, " {}", item).expect("Failed to update menu item.");
// }
// }
// stdout.flush().expect("Error flushing output");
// }
fn draw_menu(menu_items: &Vec<String>, selected_index: usize, x: u16, mut y: u16, c: &str) {
let mut stdout = io::stdout();
execute!(stdout, cursor::MoveTo(x, y)).expect("Failed to move cursor");
for (i, item) in menu_items.iter().enumerate() {
if i == selected_index {
let colored_item = match c {
"red" => item.color(Colors::RedFg),
"yellow" => item.color(Colors::YellowFg),
"green" => item.color(Colors::GreenFg),
"cyan" => item.color(Colors::CyanFg),
"magenta" => item.color(Colors::MagentaFg),
"blue" => item.color(Colors::BlueFg),
"black" => item.color(Colors::BlackFg),
"white" => item.color(Colors::WhiteFg),
_ => item.to_string(), // Default color
};
writeln!(stdout, "> {}", colored_item).expect("Failed to update menu item.");
} else {
writeln!(stdout, " {}", item).expect("Failed to update menu item.");
}
y += 1; // Move cursor to the next line
execute!(stdout, cursor::MoveTo(x, y)).expect("Failed to move cursor");
}
stdout.flush().expect("Error flushing output");
}
}