Modularize main window

src/screens/ensemble_screen.rs

@@ -0,0 +1,110 @@
+use crate::backend::*;
+use crate::database::*;
+use crate::widgets::*;
+use glib::clone;
+use gtk::prelude::*;
+use gtk_macros::get_widget;
+use libhandy::HeaderBarExt;
+use std::cell::RefCell;
+use std::rc::Rc;
+
+pub struct EnsembleScreen {
+    pub widget: gtk::Box,
+    stack: gtk::Stack,
+    recording_list: Rc<List<RecordingDescription>>,
+    back: RefCell<Option<Box<dyn Fn() -> () + 'static>>>,
+}
+
+impl EnsembleScreen {
+    pub fn new(backend: Rc<Backend>, ensemble: Ensemble) -> Rc<Self> {
+        let builder =
+            gtk::Builder::from_resource("/de/johrpan/musicus_editor/ui/ensemble_screen.ui");
+
+        get_widget!(builder, gtk::Box, widget);
+        get_widget!(builder, libhandy::HeaderBar, header);
+        get_widget!(builder, gtk::Button, back_button);
+        get_widget!(builder, gtk::MenuButton, menu_button);
+        get_widget!(builder, gtk::SearchEntry, search_entry);
+        get_widget!(builder, gtk::Stack, stack);
+        get_widget!(builder, gtk::Frame, recording_frame);
+
+        header.set_title(Some(&ensemble.name));
+
+        let recording_list = List::new(
+            |recording: &RecordingDescription| {
+                let work_label = gtk::Label::new(Some(&recording.work.get_title()));
+
+                work_label.set_ellipsize(pango::EllipsizeMode::End);
+                work_label.set_halign(gtk::Align::Start);
+
+                let performers_label = gtk::Label::new(Some(&recording.get_performers()));
+                performers_label.set_ellipsize(pango::EllipsizeMode::End);
+                performers_label.set_opacity(0.5);
+                performers_label.set_halign(gtk::Align::Start);
+
+                let vbox = gtk::Box::new(gtk::Orientation::Vertical, 0);
+                vbox.add(&work_label);
+                vbox.add(&performers_label);
+
+                vbox.upcast()
+            },
+            clone!(@strong search_entry => move |recording: &RecordingDescription| {
+                let search = search_entry.get_text().to_string().to_lowercase();
+                let text = recording.work.get_title() + &recording.get_performers();
+                search.is_empty() || text.contains(&search)
+            }),
+            "No recordings found.",
+        );
+
+        recording_frame.add(&recording_list.widget.clone());
+
+        let result = Rc::new(Self {
+            widget,
+            stack,
+            recording_list,
+            back: RefCell::new(None),
+        });
+
+        search_entry.connect_search_changed(clone!(@strong result => move |_| {
+            result.recording_list.invalidate_filter();
+        }));
+
+        back_button.connect_clicked(clone!(@strong result => move |_| {
+            if let Some(back) = &*result.back.borrow() {
+                back();
+            }
+        }));
+
+        let context = glib::MainContext::default();
+        let clone = result.clone();
+        context.spawn_local(async move {
+            let recordings = backend
+                .get_recordings_for_ensemble(ensemble.id)
+                .await
+                .unwrap();
+
+            if recordings.is_empty() {
+                clone.stack.set_visible_child_name("nothing");
+            } else {
+                clone.recording_list.show_items(recordings);
+                clone.stack.set_visible_child_name("content");
+            }
+        });
+
+        result
+    }
+
+    pub fn set_back<B>(&self, back: B)
+    where
+        B: Fn() -> () + 'static,
+    {
+        self.back.replace(Some(Box::new(back)));
+    }
+
+    pub fn set_recording_selected<S>(&self, selected: S)
+    where
+        S: Fn(&RecordingDescription) -> () + 'static,
+    {
+        self.recording_list.set_selected(selected);
+    }
+}