editor: implement tracks editor parts list

src/editor/ensemble_editor.rs

@@ -79,7 +79,10 @@ impl MusicusEnsembleEditor {
 
         if let Some(ensemble) = ensemble {
             obj.imp().save_row.set_title(&gettext("Save changes"));
-            obj.imp().ensemble_id.set(ensemble.ensemble_id.clone()).unwrap();
+            obj.imp()
+                .ensemble_id
+                .set(ensemble.ensemble_id.clone())
+                .unwrap();
             obj.imp().name_editor.set_translation(&ensemble.name);
         }
 

src/editor/instrument_editor.rs

@@ -79,14 +79,20 @@ impl MusicusInstrumentEditor {
 
         if let Some(instrument) = instrument {
             obj.imp().save_row.set_title(&gettext("Save changes"));
-            obj.imp().instrument_id.set(instrument.instrument_id.clone()).unwrap();
+            obj.imp()
+                .instrument_id
+                .set(instrument.instrument_id.clone())
+                .unwrap();
             obj.imp().name_editor.set_translation(&instrument.name);
         }
 
         obj
     }
 
-    pub fn connect_created<F: Fn(&Self, Instrument) + 'static>(&self, f: F) -> glib::SignalHandlerId {
+    pub fn connect_created<F: Fn(&Self, Instrument) + 'static>(
+        &self,
+        f: F,
+    ) -> glib::SignalHandlerId {
         self.connect_local("created", true, move |values| {
             let obj = values[0].get::<Self>().unwrap();
             let instrument = values[1].get::<Instrument>().unwrap();

src/editor/mod.rs

@@ -13,6 +13,7 @@ pub mod recording_selector_popover;
 pub mod role_editor;
 pub mod role_selector_popover;
 pub mod tracks_editor;
+pub mod tracks_editor_parts_popover;
 pub mod tracks_editor_track_row;
 pub mod translation_editor;
 pub mod translation_entry;

src/editor/recording_editor.rs

@@ -248,7 +248,11 @@ impl MusicusRecordingEditor {
 
     fn set_work(&self, work: Work) {
         self.imp().work_row.set_title(&work.name.get());
-        self.imp().work_row.set_subtitle(&work.composers_string());
+        self.imp().work_row.set_subtitle(
+            &work
+                .composers_string()
+                .unwrap_or_else(|| gettext("No composers")),
+        );
         self.imp().work.replace(Some(work));
     }
 

src/editor/tracks_editor.rs

@@ -181,12 +181,9 @@ impl TracksEditor {
     }
 
     fn set_recording(&self, recording: Recording) {
-        self.imp().recording_row.set_title(&format!(
-            "{}: {}",
-            recording.work.composers_string(),
-            recording.work.name.get(),
-        ));
-
+        self.imp()
+            .recording_row
+            .set_title(&recording.work.to_string());
         self.imp()
             .recording_row
             .set_subtitle(&recording.performers_string());

src/editor/tracks_editor_parts_popover.rs

@@ -0,0 +1,171 @@
+use super::activatable_row::MusicusActivatableRow;
+use crate::db::models::Work;
+
+use gtk::{
+    glib::{self, subclass::Signal},
+    prelude::*,
+    subclass::prelude::*,
+};
+use once_cell::sync::Lazy;
+
+use std::cell::{OnceCell, RefCell};
+
+mod imp {
+    use super::*;
+
+    #[derive(Debug, Default, gtk::CompositeTemplate)]
+    #[template(file = "data/ui/tracks_editor_parts_popover.blp")]
+    pub struct TracksEditorPartsPopover {
+        pub parts: OnceCell<Vec<Work>>,
+        pub parts_filtered: RefCell<Vec<Work>>,
+
+        #[template_child]
+        pub search_entry: TemplateChild<gtk::SearchEntry>,
+        #[template_child]
+        pub scrolled_window: TemplateChild<gtk::ScrolledWindow>,
+        #[template_child]
+        pub list_box: TemplateChild<gtk::ListBox>,
+    }
+
+    #[glib::object_subclass]
+    impl ObjectSubclass for TracksEditorPartsPopover {
+        const NAME: &'static str = "MusicusTracksEditorPartsPopover";
+        type Type = super::TracksEditorPartsPopover;
+        type ParentType = gtk::Popover;
+
+        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 TracksEditorPartsPopover {
+        fn constructed(&self) {
+            self.parent_constructed();
+
+            self.obj()
+                .connect_visible_notify(|obj: &super::TracksEditorPartsPopover| {
+                    if obj.is_visible() {
+                        obj.imp().search_entry.set_text("");
+                        obj.imp().search_entry.grab_focus();
+                        obj.imp().scrolled_window.vadjustment().set_value(0.0);
+                    }
+                });
+        }
+
+        fn signals() -> &'static [Signal] {
+            static SIGNALS: Lazy<Vec<Signal>> = Lazy::new(|| {
+                vec![
+                    Signal::builder("part-selected")
+                        .param_types([Work::static_type()])
+                        .build(),
+                    Signal::builder("create").build(),
+                ]
+            });
+
+            SIGNALS.as_ref()
+        }
+    }
+
+    impl WidgetImpl for TracksEditorPartsPopover {
+        // TODO: Fix focus.
+        fn focus(&self, direction_type: gtk::DirectionType) -> bool {
+            if direction_type == gtk::DirectionType::Down {
+                self.list_box.child_focus(direction_type)
+            } else {
+                self.parent_focus(direction_type)
+            }
+        }
+    }
+
+    impl PopoverImpl for TracksEditorPartsPopover {}
+}
+
+glib::wrapper! {
+    pub struct TracksEditorPartsPopover(ObjectSubclass<imp::TracksEditorPartsPopover>)
+        @extends gtk::Widget, gtk::Popover;
+}
+
+#[gtk::template_callbacks]
+impl TracksEditorPartsPopover {
+    pub fn new(parts: Vec<Work>) -> Self {
+        let obj: Self = glib::Object::new();
+        obj.imp().parts.set(parts).unwrap();
+        obj.search("");
+        obj
+    }
+
+    pub fn connect_part_selected<F: Fn(&Self, Work) + 'static>(
+        &self,
+        f: F,
+    ) -> glib::SignalHandlerId {
+        self.connect_local("part-selected", true, move |values| {
+            let obj = values[0].get::<Self>().unwrap();
+            let role = values[1].get::<Work>().unwrap();
+            f(&obj, role);
+            None
+        })
+    }
+
+    #[template_callback]
+    fn search_changed(&self, entry: &gtk::SearchEntry) {
+        self.search(&entry.text());
+    }
+
+    #[template_callback]
+    fn activate(&self, _: &gtk::SearchEntry) {
+        if let Some(work) = self.imp().parts_filtered.borrow().first() {
+            self.select(work.clone());
+        }
+    }
+
+    #[template_callback]
+    fn stop_search(&self, _: &gtk::SearchEntry) {
+        self.popdown();
+    }
+
+    fn search(&self, search: &str) {
+        let imp = self.imp();
+
+        let parts_filtered = imp
+            .parts
+            .get()
+            .unwrap()
+            .iter()
+            .filter(|p| p.name.get().to_lowercase().contains(&search.to_lowercase()))
+            .cloned()
+            .collect::<Vec<Work>>();
+
+        imp.list_box.remove_all();
+
+        for part in &parts_filtered {
+            let row = MusicusActivatableRow::new(
+                &gtk::Label::builder()
+                    .label(part.to_string())
+                    .halign(gtk::Align::Start)
+                    .build(),
+            );
+
+            row.set_tooltip_text(Some(&part.to_string()));
+
+            let part = part.clone();
+            let obj = self.clone();
+            row.connect_activated(move |_: &MusicusActivatableRow| {
+                obj.select(part.clone());
+            });
+
+            imp.list_box.append(&row);
+        }
+
+        imp.parts_filtered.replace(parts_filtered);
+    }
+
+    fn select(&self, part: Work) {
+        self.emit_by_name::<()>("part-selected", &[&part]);
+        self.popdown();
+    }
+}

src/editor/tracks_editor_track_row.rs

@@ -1,5 +1,6 @@
 use crate::{
     db::models::{Recording, Work},
+    editor::tracks_editor_parts_popover::TracksEditorPartsPopover,
     library::MusicusLibrary,
 };
 
@@ -29,8 +30,12 @@ mod imp {
         pub recording: OnceCell<Recording>,
         pub track_data: RefCell<TracksEditorTrackData>,
 
+        pub parts_popover: OnceCell<TracksEditorPartsPopover>,
+
         #[template_child]
         pub select_parts_box: TemplateChild<gtk::Box>,
+        #[template_child]
+        pub reset_button: TemplateChild<gtk::Button>,
     }
 
     #[glib::object_subclass]
@@ -101,9 +106,23 @@ impl TracksEditorTrackRow {
             }
         });
 
+        let parts_popover = TracksEditorPartsPopover::new(recording.work.parts.clone());
+
+        parts_popover.connect_part_selected(clone!(
+            #[weak]
+            obj,
+            move |_, part| {
+                obj.imp().track_data.borrow_mut().parts.push(part);
+                obj.parts_updated();
+            }
+        ));
+
+        obj.imp().select_parts_box.append(&parts_popover);
+        obj.imp().parts_popover.set(parts_popover).unwrap();
+
         obj.imp().recording.set(recording).unwrap();
         obj.imp().track_data.replace(track_data);
-        obj.update_title();
+        obj.parts_updated();
 
         obj
     }
@@ -122,7 +141,13 @@ impl TracksEditorTrackRow {
 
     #[template_callback]
     fn select_parts(&self) {
-        // self.imp().parts_popover.get().unwrap().popup();
+        self.imp().parts_popover.get().unwrap().popup();
+    }
+
+    #[template_callback]
+    fn reset(&self) {
+        self.imp().track_data.borrow_mut().parts.clear();
+        self.parts_updated();
     }
 
     #[template_callback]
@@ -130,9 +155,11 @@ impl TracksEditorTrackRow {
         self.emit_by_name::<()>("remove", &[]);
     }
 
-    fn update_title(&self) {
+    fn parts_updated(&self) {
         let parts = &self.imp().track_data.borrow().parts;
 
+        self.imp().reset_button.set_visible(!parts.is_empty());
+
         self.set_title(&if parts.is_empty() {
             if self.imp().recording.get().unwrap().work.parts.is_empty() {
                 gettext("Whole work")