Add player mockup

src/player.rs

@@ -0,0 +1,52 @@
+use gtk::{glib, glib::Properties, prelude::*, subclass::prelude::*};
+use std::cell::Cell;
+
+mod imp {
+    use super::*;
+
+    #[derive(Properties, Debug, Default)]
+    #[properties(wrapper_type = super::MusicusPlayer)]
+    pub struct MusicusPlayer {
+        #[property(get, set)]
+        pub active: Cell<bool>,
+        #[property(get, set)]
+        pub playing: Cell<bool>,
+    }
+
+    #[glib::object_subclass]
+    impl ObjectSubclass for MusicusPlayer {
+        const NAME: &'static str = "MusicusPlayer";
+        type Type = super::MusicusPlayer;
+    }
+
+    #[glib::derived_properties]
+    impl ObjectImpl for MusicusPlayer {}
+}
+
+glib::wrapper! {
+    pub struct MusicusPlayer(ObjectSubclass<imp::MusicusPlayer>);
+}
+
+impl MusicusPlayer {
+    pub fn new() -> Self {
+        glib::Object::new()
+    }
+
+    pub fn play(&self) {
+        if !self.imp().active.get() {
+            self.set_property("active", true);
+        }
+
+        self.set_property("playing", true);
+    }
+
+    pub fn pause(&self) {
+        self.set_property("playing", false);
+    }
+}
+
+impl Default for MusicusPlayer {
+    fn default() -> Self {
+        Self::new()
+    }
+}