Add medium editor skeleton

musicus/src/import/medium_editor.rs

@@ -0,0 +1,75 @@
+use super::disc_source::DiscSource;
+use crate::backend::Backend;
+// use crate::editors::{TrackSetEditor, TrackSource};
+use crate::widgets::{Navigator, NavigatorScreen};
+use crate::widgets::new_list::List;
+use glib::clone;
+use gtk::prelude::*;
+use gtk_macros::get_widget;
+use std::cell::RefCell;
+use std::rc::Rc;
+
+/// A dialog for editing metadata while importing music into the music library.
+pub struct MediumEditor {
+    backend: Rc<Backend>,
+    source: DiscSource,
+    widget: gtk::Box,
+    navigator: RefCell<Option<Rc<Navigator>>>,
+}
+
+impl MediumEditor {
+    /// Create a new medium editor.
+    pub fn new(backend: Rc<Backend>, source: DiscSource) -> Rc<Self> {
+        // Create UI
+
+        let builder = gtk::Builder::from_resource("/de/johrpan/musicus/ui/medium_editor.ui");
+
+        get_widget!(builder, gtk::Box, widget);
+        get_widget!(builder, gtk::Button, back_button);
+        get_widget!(builder, gtk::Button, add_button);
+        get_widget!(builder, gtk::Frame, frame);
+
+        let list = List::new("No recordings added.");
+        frame.add(&list.widget);
+
+        let this = Rc::new(Self {
+            backend,
+            source,
+            widget,
+            navigator: RefCell::new(None),
+        });
+
+        // Connect signals and callbacks
+
+        back_button.connect_clicked(clone!(@strong this => move |_| {
+            let navigator = this.navigator.borrow().clone();
+            if let Some(navigator) = navigator {
+                navigator.pop();
+            }
+        }));
+
+        add_button.connect_clicked(clone!(@strong this => move |_| {
+            let navigator = this.navigator.borrow().clone();
+            if let Some(navigator) = navigator {
+                // let editor = TrackSetEditor::new(this.backend.clone(), this.source.clone());
+                // navigator.push(editor);
+            }
+        }));
+
+        this
+    }
+}
+
+impl NavigatorScreen for MediumEditor {
+    fn attach_navigator(&self, navigator: Rc<Navigator>) {
+        self.navigator.replace(Some(navigator));
+    }
+
+    fn get_widget(&self) -> gtk::Widget {
+        self.widget.clone().upcast()
+    }
+
+    fn detach_navigator(&self) {
+        self.navigator.replace(None);
+    }
+}