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extern crate cursive;
use cursive::prelude::*;
use cursive::view::{Position, Offset};
fn show_popup(siv: &mut Cursive) {
// Let's center the popup horizontally, but offset it down a few rows
siv.screen_mut()
.add_layer_at(Position::new(Offset::Center, Offset::Parent(3)),
Dialog::new(TextView::new("Tak!"))
.button("Change", |s| {
// Look for a view tagged "text". We _know_ it's there, so unwrap it.
let view = s.find_id::<TextView>("text").unwrap();
let content: String = view.get_content().chars().rev().collect();
view.set_content(content);
})
.dismiss_button("Ok"));
}
fn main() {
let mut siv = Cursive::new();
let content = "Press Q to quit the application.\n\nPress P to open the popup.";
siv.add_global_callback('q', |s| s.quit());
// Let's wrap the view to give it a recognizable ID, so we can look for it.
// We add the P callback on the textview only (and not globally),
// so that we can't call it when the popup is already visible.
siv.add_layer(KeyEventView::new(IdView::new("text", TextView::new(content)))
.register('p', |s| show_popup(s)));
siv.run();
}