Add mechanism to show playlist page

src/main.rs

@@ -1,6 +1,7 @@
 mod application;
 mod config;
 mod home_page;
+mod playlist_page;
 mod tile;
 mod welcome_page;
 mod window;

src/playlist_page.rs

@@ -0,0 +1,56 @@
+use adw::subclass::prelude::*;
+use gtk::{glib, glib::subclass::Signal, prelude::*};
+use once_cell::sync::Lazy;
+
+mod imp {
+    use super::*;
+
+    #[derive(Debug, Default, gtk::CompositeTemplate)]
+    #[template(resource = "/de/johrpan/musicus/playlist_page.ui")]
+    pub struct MusicusPlaylistPage {}
+
+    #[glib::object_subclass]
+    impl ObjectSubclass for MusicusPlaylistPage {
+        const NAME: &'static str = "MusicusPlaylistPage";
+        type Type = super::MusicusPlaylistPage;
+        type ParentType = adw::Bin;
+
+        fn class_init(klass: &mut Self::Class) {
+            klass.bind_template();
+            klass.bind_template_instance_callbacks();
+        }
+
+        fn instance_init(obj: &glib::subclass::InitializingObject<Self>) {
+            obj.init_template();
+        }
+    }
+
+    impl ObjectImpl for MusicusPlaylistPage {
+        fn signals() -> &'static [Signal] {
+            static SIGNALS: Lazy<Vec<Signal>> =
+                Lazy::new(|| vec![Signal::builder("close").build()]);
+
+            SIGNALS.as_ref()
+        }
+    }
+
+    impl WidgetImpl for MusicusPlaylistPage {}
+    impl BinImpl for MusicusPlaylistPage {}
+}
+
+glib::wrapper! {
+    pub struct MusicusPlaylistPage(ObjectSubclass<imp::MusicusPlaylistPage>)
+        @extends gtk::Widget, adw::Bin;
+}
+
+#[gtk::template_callbacks]
+impl MusicusPlaylistPage {
+    pub fn new() -> Self {
+        glib::Object::new()
+    }
+
+    #[template_callback]
+    fn close(&self, _: &gtk::Button) {
+        self.emit_by_name::<()>("close", &[]);
+    }
+}

src/window.rs

@@ -1,4 +1,7 @@
-use crate::{home_page::MusicusHomePage, welcome_page::MusicusWelcomePage};
+use crate::{
+    home_page::MusicusHomePage, playlist_page::MusicusPlaylistPage,
+    welcome_page::MusicusWelcomePage,
+};
 
 use adw::subclass::prelude::*;
 use gtk::{gio, glib, prelude::*};
@@ -9,10 +12,14 @@ mod imp {
     #[derive(Debug, Default, gtk::CompositeTemplate)]
     #[template(resource = "/de/johrpan/musicus/window.ui")]
     pub struct MusicusWindow {
+        #[template_child]
+        pub stack: TemplateChild<gtk::Stack>,
         #[template_child]
         pub navigation_view: TemplateChild<adw::NavigationView>,
         #[template_child]
         pub player_bar_revealer: TemplateChild<gtk::Revealer>,
+        #[template_child]
+        pub playlist_button: TemplateChild<gtk::ToggleButton>,
     }
 
     #[glib::object_subclass]
@@ -23,6 +30,7 @@ mod imp {
 
         fn class_init(klass: &mut Self::Class) {
             MusicusHomePage::static_type();
+            MusicusPlaylistPage::static_type();
             MusicusWelcomePage::static_type();
             klass.bind_template();
             klass.bind_template_instance_callbacks();
@@ -93,4 +101,20 @@ impl MusicusWindow {
         log::info!("{path:?}");
         self.imp().navigation_view.replace_with_tags(&["home"]);
     }
+
+    #[template_callback]
+    fn show_playlist(&self, button: &gtk::ToggleButton) {
+        self.imp()
+            .stack
+            .set_visible_child_name(if button.is_active() {
+                "playlist"
+            } else {
+                "navigation"
+            });
+    }
+
+    #[template_callback]
+    fn hide_playlist(&self, _: &MusicusPlaylistPage) {
+        self.imp().playlist_button.set_active(false);
+    }
 }