audrey/src/ui/play_queue.rs

pub mod song;
pub use song::Song;

mod imp {
    use adw::{glib, prelude::*, subclass::prelude::*};
    use glib::{subclass::InitializingObject, WeakRef};

    #[derive(gtk::CompositeTemplate, glib::Properties, Default)]
    #[template(resource = "/eu/callcc/audrey/play_queue.ui")]
    #[properties(wrapper_type = super::PlayQueue)]
    pub struct PlayQueue {
        #[property(get, set)]
        playbin: WeakRef<crate::Playbin>,
    }

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

        fn class_init(klass: &mut Self::Class) {
            klass.bind_template();
            klass.bind_template_callbacks();
        }

        fn instance_init(obj: &InitializingObject<Self>) {
            obj.init_template();
        }
    }

    #[glib::derived_properties]
    impl ObjectImpl for PlayQueue {}

    impl WidgetImpl for PlayQueue {}

    impl BinImpl for PlayQueue {}

    #[gtk::template_callbacks]
    impl PlayQueue {
        #[template_callback]
        fn visible_child_name(&self, n_items: u32) -> &'static str {
            if n_items > 0 {
                "not-empty"
            } else {
                "empty"
            }
        }

        #[template_callback]
        fn on_song_list_setup(&self, item: &gtk::ListItem, _factory: &gtk::SignalListItemFactory) {
            let child = super::Song::new(&self.playbin.upgrade().unwrap());

            child.set_draggable(true);
            child.set_show_position(true);
            child.set_show_artist(true);
            child.set_show_cover(true);

            item.set_child(Some(&child));
        }

        #[template_callback]
        fn on_song_list_bind(&self, item: &gtk::ListItem, _factory: &gtk::SignalListItemFactory) {
            let child = item.child().and_downcast::<super::Song>().unwrap();

            child.bind(
                item.position(),
                item.item().unwrap().downcast_ref::<crate::playbin::Song>().unwrap(),
            );
        }

        #[template_callback]
        fn on_song_list_unbind(&self, item: &gtk::ListItem, _factory: &gtk::SignalListItemFactory) {
            let child = item.child().and_downcast::<super::Song>().unwrap();

            child.unbind();
        }

        #[template_callback]
        fn on_row_activated(&self, position: u32) {
            self.obj().playbin().unwrap().select_track(position);
        }
    }
}

use gtk::glib;

glib::wrapper! {
    pub struct PlayQueue(ObjectSubclass<imp::PlayQueue>)
        @extends adw::Bin, gtk::Widget,
        @implements gtk::Accessible, gtk::Buildable, gtk::ConstraintTarget;
}