cursive/examples/menubar.rs

extern crate cursive;

use cursive::Cursive;
use cursive::menu::MenuTree;
use cursive::views::{Dialog, TextView};
use cursive::event::Key;
use cursive::traits::*;

fn main() {

    let mut siv = Cursive::new();

    siv.menubar()
        .add("File",
             MenuTree::new()
                 .leaf("New", |s| s.add_layer(Dialog::info("New file!")))
                 .subtree("Recent",
                          MenuTree::new().with(|tree| {
                              for i in 1..100 {
                                  tree.add_leaf(&format!("Item {}", i), |_| ())
                              }
                          }))
                 .delimiter()
                 .with(|tree| {
                     for i in 1..10 {
                         tree.add_leaf(&format!("Option {}", i), |_| ());
                     }
                 })
                 .delimiter()
                 .leaf("Quit", |s| s.quit()))
        .add("Help",
             MenuTree::new()
                 .subtree("Help",
                          MenuTree::new()
                              .leaf("General", |s| {
                                  s.add_layer(Dialog::info("Help message!"))
                              })
                              .leaf("Online", |s| {
                                  s.add_layer(Dialog::info("Google it \
                                                            yourself!\nKids, \
                                                            these days..."))
                              }))
                 .leaf("About",
                       |s| s.add_layer(Dialog::info("Cursive v0.0.0"))));

    // siv.set_autohide_menu(false);

    siv.add_global_callback(Key::Esc, |s| s.select_menubar());

    siv.add_layer(Dialog::around(TextView::new("Hit <Esc> to show the menu!")));

    siv.run();
}