cursive/examples/mutation.rs

42 lines
1.4 KiB
Rust
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2015-05-23 17:33:29 +00:00
extern crate cursive;
use cursive::Cursive;
use cursive::views::{Dialog, KeyEventView, TextView};
use cursive::view::{Offset, Position};
use cursive::traits::*;
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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::around(TextView::new("Tak!"))
.button("Change", |s| {
// Look for a view tagged "text". We _know_ it's there, so unwrap it.
s.find_id("text", |view: &mut TextView| {
let content: String = view.get_content().chars().rev().collect();
view.set_content(content);
});
})
.dismiss_button("Ok"));
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}
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fn main() {
let mut siv = Cursive::new();
let content = "Press Q to quit the application.\n\nPress P to open the \
popup.";
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siv.add_global_callback('q', |s| s.quit());
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// 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(TextView::new(content).with_id("text"))
.register('p', |s| show_popup(s)));
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siv.run();
}