Show file dialog for library selection

src/main.rs

@@ -10,6 +10,8 @@ use gettextrs::{bind_textdomain_codeset, bindtextdomain, textdomain};
 use gtk::{gio, glib, prelude::*};
 
 fn main() -> glib::ExitCode {
+    tracing_subscriber::fmt::init();
+
     bindtextdomain(GETTEXT_PACKAGE, LOCALEDIR).expect("Unable to bind the text domain");
     bind_textdomain_codeset(GETTEXT_PACKAGE, "UTF-8")
         .expect("Unable to set the text domain encoding");

src/welcome_page.rs

@@ -1,15 +1,14 @@
 use adw::subclass::{navigation_page::NavigationPageImpl, prelude::*};
-use gtk::glib;
+use gettextrs::gettext;
+use gtk::{gio, glib, glib::subclass::Signal, prelude::*};
+use once_cell::sync::Lazy;
 
 mod imp {
     use super::*;
 
     #[derive(Debug, Default, gtk::CompositeTemplate)]
     #[template(resource = "/de/johrpan/musicus/welcome_page.ui")]
-    pub struct MusicusWelcomePage {
-        #[template_child]
-        pub choose_library_button: TemplateChild<gtk::Button>,
-    }
+    pub struct MusicusWelcomePage {}
 
     #[glib::object_subclass]
     impl ObjectSubclass for MusicusWelcomePage {
@@ -19,6 +18,7 @@ mod imp {
 
         fn class_init(klass: &mut Self::Class) {
             klass.bind_template();
+            klass.bind_template_instance_callbacks();
         }
 
         fn instance_init(obj: &glib::subclass::InitializingObject<Self>) {
@@ -26,7 +26,18 @@ mod imp {
         }
     }
 
-    impl ObjectImpl for MusicusWelcomePage {}
+    impl ObjectImpl for MusicusWelcomePage {
+        fn signals() -> &'static [Signal] {
+            static SIGNALS: Lazy<Vec<Signal>> = Lazy::new(|| {
+                vec![Signal::builder("folder-selected")
+                    .param_types([gio::File::static_type()])
+                    .build()]
+            });
+
+            SIGNALS.as_ref()
+        }
+    }
+
     impl WidgetImpl for MusicusWelcomePage {}
     impl NavigationPageImpl for MusicusWelcomePage {}
 }
@@ -36,8 +47,35 @@ glib::wrapper! {
         @extends gtk::Widget, adw::NavigationPage;
 }
 
+#[gtk::template_callbacks]
 impl MusicusWelcomePage {
     pub fn new() -> Self {
         glib::Object::new()
     }
+
+    #[template_callback]
+    async fn choose_library_folder(&self, _: &gtk::Button) {
+        let dialog = gtk::FileDialog::builder()
+            .title(gettext("Select music library folder"))
+            .modal(true)
+            .build();
+
+        match dialog
+            .select_folder_future(
+                self.root()
+                    .as_ref()
+                    .and_then(|r| r.downcast_ref::<gtk::Window>()),
+            )
+            .await
+        {
+            Err(err) => {
+                if !err.matches(gtk::DialogError::Dismissed) {
+                    log::error!("Folder selection failed: {err}");
+                }
+            }
+            Ok(folder) => {
+                self.emit_by_name::<()>("folder-selected", &[&folder]);
+            }
+        }
+    }
 }

src/window.rs

@@ -1,7 +1,7 @@
 use crate::welcome_page::MusicusWelcomePage;
 
 use adw::subclass::prelude::*;
-use gtk::{gio, glib};
+use gtk::{gio, glib, prelude::*};
 
 mod imp {
     use super::*;
@@ -20,7 +20,9 @@ mod imp {
         type ParentType = adw::ApplicationWindow;
 
         fn class_init(klass: &mut Self::Class) {
+            MusicusWelcomePage::static_type();
             klass.bind_template();
+            klass.bind_template_instance_callbacks();
         }
 
         fn instance_init(obj: &glib::subclass::InitializingObject<Self>) {
@@ -31,8 +33,6 @@ mod imp {
     impl ObjectImpl for MusicusWindow {
         fn constructed(&self) {
             self.parent_constructed();
-
-            self.navigation_view.add(&MusicusWelcomePage::new());
         }
     }
 
@@ -48,10 +48,17 @@ glib::wrapper! {
         @implements gio::ActionGroup, gio::ActionMap;
 }
 
+#[gtk::template_callbacks]
 impl MusicusWindow {
     pub fn new<P: glib::IsA<gtk::Application>>(application: &P) -> Self {
         glib::Object::builder()
             .property("application", application)
             .build()
     }
+
+    #[template_callback]
+    async fn set_library_folder(&self, folder: &gio::File) {
+        let path = folder.path();
+        log::info!("{path:?}");
+    }
 }