audrey/src/application.rs

mod imp {
    use crate::ui;
    use adw::prelude::*;
    use adw::subclass::prelude::*;
    use gtk::glib;

    #[derive(Default)]
    pub struct Application;

    #[glib::object_subclass]
    impl ObjectSubclass for Application {
        const NAME: &'static str = "AudreyApplication";
        type Type = super::Application;
        type ParentType = adw::Application;
    }

    impl ObjectImpl for Application {}

    impl ApplicationImpl for Application {
        fn activate(&self) {
            self.parent_activate();
            match self.obj().active_window() {
                None => ui::Window::new(self.obj().as_ref()).present(),
                Some(win) => win.present(),
            }
        }
    }

    impl GtkApplicationImpl for Application {}

    impl AdwApplicationImpl for Application {}
}

use gtk::{gio, glib};

glib::wrapper! {
    pub struct Application(ObjectSubclass<imp::Application>)
        @extends adw::Application, gtk::Application, gio::Application,
        @implements gio::ActionGroup, gio::ActionMap;
}

impl Application {
    pub fn new() -> Self {
        glib::Object::builder()
            .property("application-id", "eu.callcc.audrey")
            .property("flags", gio::ApplicationFlags::default())
            .build()
    }
}