Add ensemble selector

src/dialogs/ensemble_selector.rs

@@ -0,0 +1,105 @@
+use super::selector_row::SelectorRow;
+use super::EnsembleEditor;
+use crate::backend::Backend;
+use crate::database::*;
+use gio::prelude::*;
+use glib::clone;
+use gtk::prelude::*;
+use gtk_macros::get_widget;
+use std::convert::TryInto;
+use std::rc::Rc;
+
+pub struct EnsembleSelector<F>
+where
+    F: Fn(Ensemble) -> () + 'static,
+{
+    backend: Rc<Backend>,
+    window: gtk::Window,
+    callback: F,
+    list: gtk::ListBox,
+    search_entry: gtk::SearchEntry,
+}
+
+impl<F> EnsembleSelector<F>
+where
+    F: Fn(Ensemble) -> () + 'static,
+{
+    pub fn new<P: IsA<gtk::Window>>(backend: Rc<Backend>, parent: &P, callback: F) -> Rc<Self> {
+        let builder =
+            gtk::Builder::from_resource("/de/johrpan/musicus_editor/ui/ensemble_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 result = Rc::new(EnsembleSelector {
+            backend: backend,
+            window: window,
+            callback: callback,
+            search_entry: search_entry,
+            list: list,
+        });
+
+        result
+            .backend
+            .get_ensembles(clone!(@strong result => move |ensembles| {
+                for (index, ensemble) in ensembles.iter().enumerate() {
+                    let label = gtk::Label::new(Some(&ensemble.name));
+                    label.set_halign(gtk::Align::Start);
+                    let row = SelectorRow::new(index.try_into().unwrap(), &label);
+                    row.show_all();
+                    result.list.insert(&row, -1);
+                }
+
+                result
+                    .list
+                    .connect_row_activated(clone!(@strong result, @strong ensembles => 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)(ensembles[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().to_lowercase();
+                        search.is_empty() || ensembles[index]
+                            .name
+                            .to_lowercase()
+                            .contains(&search)
+                    }))));
+            }));
+
+        result
+            .search_entry
+            .connect_search_changed(clone!(@strong result => move |_| {
+                result.list.invalidate_filter();
+            }));
+
+        add_button.connect_clicked(clone!(@strong result => move |_| {
+            let editor = EnsembleEditor::new(
+                result.backend.clone(),
+                &result.window,
+                None,
+                clone!(@strong result => move |ensemble| {
+                    result.window.close();
+                    (result.callback)(ensemble);
+                }),
+            );
+
+            editor.show();
+        }));
+
+        result.window.set_transient_for(Some(parent));
+
+        result
+    }
+
+    pub fn show(&self) {
+        self.window.show();
+    }
+}

src/dialogs/mod.rs

@@ -1,6 +1,9 @@
 pub mod ensemble_editor;
 pub use ensemble_editor::*;
 
+pub mod ensemble_selector;
+pub use ensemble_selector::*;
+
 pub mod instrument_editor;
 pub use instrument_editor::*;