Add instrument selector

src/dialogs/instrument_selector.rs

@@ -0,0 +1,106 @@
+use super::selector_row::SelectorRow;
+use super::InstrumentEditor;
+use crate::database::*;
+use gio::prelude::*;
+use glib::clone;
+use gtk::prelude::*;
+use gtk_macros::get_widget;
+use std::cell::RefCell;
+use std::convert::TryInto;
+use std::rc::Rc;
+
+pub struct InstrumentSelector<F>
+where
+    F: Fn(Instrument) -> () + 'static,
+{
+    db: Rc<Database>,
+    window: gtk::Window,
+    callback: F,
+    instruments: RefCell<Vec<Instrument>>,
+    list: gtk::ListBox,
+    search_entry: gtk::SearchEntry,
+}
+
+impl<F> InstrumentSelector<F>
+where
+    F: Fn(Instrument) -> () + 'static,
+{
+    pub fn new<P: IsA<gtk::Window>>(db: Rc<Database>, parent: &P, callback: F) -> Rc<Self> {
+        let builder =
+            gtk::Builder::from_resource("/de/johrpan/musicus_editor/ui/instrument_selector.ui");
+
+        get_widget!(builder, gtk::Window, window);
+        get_widget!(builder, gtk::Button, add_button);
+        get_widget!(builder, gtk::SearchEntry, search_entry);
+        get_widget!(builder, gtk::ListBox, list);
+
+        let instruments = db.get_instruments();
+
+        for (index, instrument) in instruments.iter().enumerate() {
+            let label = gtk::Label::new(Some(&instrument.name));
+            label.set_halign(gtk::Align::Start);
+            let row = SelectorRow::new(index.try_into().unwrap(), &label);
+            row.show_all();
+            list.insert(&row, -1);
+        }
+
+        let result = Rc::new(InstrumentSelector {
+            db: db,
+            window: window,
+            callback: callback,
+            instruments: RefCell::new(instruments),
+            search_entry: search_entry,
+            list: list,
+        });
+
+        result
+            .list
+            .connect_row_activated(clone!(@strong result => move |_, row| {
+                result.window.close();
+                let row = row.get_child().unwrap().downcast::<SelectorRow>().unwrap();
+                let index: usize = row.get_index().try_into().unwrap();
+                (result.callback)(result.instruments.borrow()[index].clone());
+            }));
+
+        result
+            .list
+            .set_filter_func(Some(Box::new(clone!(@strong result => move |row| {
+                let row = row.get_child().unwrap().downcast::<SelectorRow>().unwrap();
+                let index: usize = row.get_index().try_into().unwrap();
+                let search = result.search_entry.get_text().to_string();
+
+                search.is_empty() || result.instruments.borrow()[index]
+                    .name
+                    .to_lowercase()
+                    .contains(&result.search_entry.get_text().to_string().to_lowercase())
+            }))));
+
+        result
+            .search_entry
+            .connect_search_changed(clone!(@strong result => move |_| {
+                result.list.invalidate_filter();
+            }));
+
+        add_button.connect_clicked(clone!(@strong result => move |_| {
+            let editor = InstrumentEditor::new(
+                result.db.clone(),
+                &result.window,
+                None,
+                clone!(@strong result => move |instrument| {
+                    result.window.close();
+                    (result.callback)(instrument);
+                }),
+            );
+
+            editor.show();
+        }));
+
+        result.window.set_transient_for(Some(parent));
+
+        result
+    }
+
+    pub fn show(&self) {
+        self.window.show();
+    }
+}