Refactor module layout

src/selector/instrument.rs

@@ -0,0 +1,203 @@
+use std::cell::{OnceCell, RefCell};
+
+use gettextrs::gettext;
+use gtk::{
+    glib::{self, subclass::Signal, Properties},
+    prelude::*,
+    subclass::prelude::*,
+};
+use once_cell::sync::Lazy;
+
+use crate::{activatable_row::ActivatableRow, db::models::Instrument, library::Library};
+
+mod imp {
+    use super::*;
+
+    #[derive(Debug, Default, gtk::CompositeTemplate, Properties)]
+    #[properties(wrapper_type = super::InstrumentSelectorPopover)]
+    #[template(file = "data/ui/selector/instrument.blp")]
+    pub struct InstrumentSelectorPopover {
+        #[property(get, construct_only)]
+        pub library: OnceCell<Library>,
+
+        pub instruments: RefCell<Vec<Instrument>>,
+
+        #[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 InstrumentSelectorPopover {
+        const NAME: &'static str = "MusicusInstrumentSelectorPopover";
+        type Type = super::InstrumentSelectorPopover;
+        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();
+        }
+    }
+
+    #[glib::derived_properties]
+    impl ObjectImpl for InstrumentSelectorPopover {
+        fn constructed(&self) {
+            self.parent_constructed();
+
+            self.obj().connect_visible_notify(|obj| {
+                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);
+                }
+            });
+
+            self.obj().search("");
+        }
+
+        fn signals() -> &'static [Signal] {
+            static SIGNALS: Lazy<Vec<Signal>> = Lazy::new(|| {
+                vec![
+                    Signal::builder("instrument-selected")
+                        .param_types([Instrument::static_type()])
+                        .build(),
+                    Signal::builder("create").build(),
+                ]
+            });
+
+            SIGNALS.as_ref()
+        }
+    }
+
+    impl WidgetImpl for InstrumentSelectorPopover {
+        // 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 InstrumentSelectorPopover {}
+}
+
+glib::wrapper! {
+    pub struct InstrumentSelectorPopover(ObjectSubclass<imp::InstrumentSelectorPopover>)
+        @extends gtk::Widget, gtk::Popover;
+}
+
+#[gtk::template_callbacks]
+impl InstrumentSelectorPopover {
+    pub fn new(library: &Library) -> Self {
+        glib::Object::builder().property("library", library).build()
+    }
+
+    pub fn connect_instrument_selected<F: Fn(&Self, Instrument) + 'static>(
+        &self,
+        f: F,
+    ) -> glib::SignalHandlerId {
+        self.connect_local("instrument-selected", true, move |values| {
+            let obj = values[0].get::<Self>().unwrap();
+            let instrument = values[1].get::<Instrument>().unwrap();
+            f(&obj, instrument);
+            None
+        })
+    }
+
+    pub fn connect_create<F: Fn(&Self) + 'static>(&self, f: F) -> glib::SignalHandlerId {
+        self.connect_local("create", true, move |values| {
+            let obj = values[0].get::<Self>().unwrap();
+            f(&obj);
+            None
+        })
+    }
+
+    #[template_callback]
+    fn search_changed(&self, entry: &gtk::SearchEntry) {
+        self.search(&entry.text());
+    }
+
+    #[template_callback]
+    fn activate(&self, _: &gtk::SearchEntry) {
+        if let Some(instrument) = self.imp().instruments.borrow().first() {
+            self.select(instrument.clone());
+        } else {
+            self.create();
+        }
+    }
+
+    #[template_callback]
+    fn stop_search(&self, _: &gtk::SearchEntry) {
+        self.popdown();
+    }
+
+    fn search(&self, search: &str) {
+        let imp = self.imp();
+
+        let instruments = imp
+            .library
+            .get()
+            .unwrap()
+            .search_instruments(search)
+            .unwrap();
+
+        imp.list_box.remove_all();
+
+        for instrument in &instruments {
+            let row = ActivatableRow::new(
+                &gtk::Label::builder()
+                    .label(instrument.to_string())
+                    .halign(gtk::Align::Start)
+                    .build(),
+            );
+
+            row.set_tooltip_text(Some(&instrument.to_string()));
+
+            let instrument = instrument.clone();
+            let obj = self.clone();
+            row.connect_activated(move |_: &ActivatableRow| {
+                obj.select(instrument.clone());
+            });
+
+            imp.list_box.append(&row);
+        }
+
+        let create_box = gtk::Box::builder().spacing(12).build();
+        create_box.append(&gtk::Image::builder().icon_name("list-add-symbolic").build());
+        create_box.append(
+            &gtk::Label::builder()
+                .label(gettext("Create new instrument"))
+                .halign(gtk::Align::Start)
+                .build(),
+        );
+
+        let create_row = ActivatableRow::new(&create_box);
+        let obj = self.clone();
+        create_row.connect_activated(move |_: &ActivatableRow| {
+            obj.create();
+        });
+
+        imp.list_box.append(&create_row);
+
+        imp.instruments.replace(instruments);
+    }
+
+    fn select(&self, instrument: Instrument) {
+        self.emit_by_name::<()>("instrument-selected", &[&instrument]);
+        self.popdown();
+    }
+
+    fn create(&self) {
+        self.emit_by_name::<()>("create", &[]);
+        self.popdown();
+    }
+}