editor: Add basic work structure

src/db/mod.rs

@@ -38,6 +38,11 @@ pub fn connect(file_name: &str) -> Result<SqliteConnection> {
     Ok(connection)
 }
 
+/// Generate a random string suitable as an item ID.
+pub fn generate_id() -> String {
+    uuid::Uuid::new_v4().simple().to_string()
+}
+
 /// A single translated string value.
 #[derive(Serialize, Deserialize, AsExpression, FromSqlRow, Clone, Default, Debug)]
 #[diesel(sql_type = Text)]

src/db/models.rs

@@ -21,7 +21,7 @@ pub struct Work {
 }
 
 // TODO: Handle part composers.
-#[derive(Clone, Debug)]
+#[derive(Default, Clone, Debug)]
 pub struct WorkPart {
     pub work_id: String,
     pub level: u8,
@@ -113,6 +113,13 @@ impl PartialEq for Composer {
     }
 }
 
+impl Eq for WorkPart {}
+impl PartialEq for WorkPart {
+    fn eq(&self, other: &Self) -> bool {
+        self.work_id == other.work_id
+    }
+}
+
 impl Work {
     pub fn from_table(data: tables::Work, connection: &mut SqliteConnection) -> Result<Self> {
         fn visit_children(

src/editor/work_editor.rs

@@ -1,5 +1,8 @@
 use crate::{
-    db::models::{Composer, Instrument, Person},
+    db::{
+        self,
+        models::{Composer, Instrument, Person, WorkPart},
+    },
     editor::{
         instrument_selector_popover::MusicusInstrumentSelectorPopover,
         person_selector_popover::MusicusPersonSelectorPopover,
@@ -10,6 +13,7 @@ use crate::{
 };
 
 use adw::{prelude::*, subclass::prelude::*};
+use gettextrs::gettext;
 use gtk::glib::{self, clone, Properties};
 
 use std::cell::{OnceCell, RefCell};
@@ -28,6 +32,7 @@ mod imp {
         // results when finishing the process of editing the work. The composer rows
         // handle all state related to the composer.
         pub composer_rows: RefCell<Vec<MusicusWorkEditorComposerRow>>,
+        pub parts: RefCell<Vec<WorkPart>>,
         pub instruments: RefCell<Vec<Instrument>>,
 
         pub persons_popover: OnceCell<MusicusPersonSelectorPopover>,
@@ -38,6 +43,8 @@ mod imp {
         #[template_child]
         pub select_person_box: TemplateChild<gtk::Box>,
         #[template_child]
+        pub part_list: TemplateChild<gtk::ListBox>,
+        #[template_child]
         pub instrument_list: TemplateChild<gtk::ListBox>,
         #[template_child]
         pub select_instrument_box: TemplateChild<gtk::Box>,
@@ -109,9 +116,7 @@ mod imp {
                     remove_button.connect_clicked(
                         clone!(@weak obj, @weak row, @strong instrument => move |_| {
                             obj.imp().instrument_list.remove(&row);
-                            let mut instruments = obj.imp().instruments.borrow_mut();
+                            obj.imp().instruments.borrow_mut().retain(|i| *i != instrument);
-                            let index = instruments.iter().position(|i| *i == instrument).unwrap();
-                            instruments.remove(index);
                         }),
                     );
 
@@ -152,7 +157,35 @@ impl MusicusWorkEditor {
 
     #[template_callback]
     fn add_part(&self, _: &adw::ActionRow) {
-        todo!();
+        let part = WorkPart {
+            work_id: db::generate_id(),
+            ..Default::default()
+        };
+
+        let row = adw::EntryRow::builder().title(gettext("Name")).build();
+
+        let remove_button = gtk::Button::builder()
+            .icon_name("user-trash-symbolic")
+            .valign(gtk::Align::Center)
+            .css_classes(["flat"])
+            .build();
+
+        remove_button.connect_clicked(
+            clone!(@weak self as obj, @weak row, @strong part => move |_| {
+                obj.imp().part_list.remove(&row);
+                obj.imp().parts.borrow_mut().retain(|p| *p != part);
+            }),
+        );
+
+        row.add_suffix(&remove_button);
+
+        self.imp()
+            .part_list
+            .insert(&row, self.imp().parts.borrow().len() as i32);
+
+        row.grab_focus();
+
+        self.imp().parts.borrow_mut().push(part);
     }
 
     #[template_callback]