Add basic recording editor

lib/editors/recording.dart

@@ -0,0 +1,144 @@
+import 'package:flutter/material.dart';
+
+import '../backend.dart';
+import '../database.dart';
+import '../selectors/performer.dart';
+import '../selectors/work.dart';
+
+class RecordingEditor extends StatefulWidget {
+  final Recording recording;
+
+  RecordingEditor({
+    this.recording,
+  });
+
+  @override
+  _RecordingEditorState createState() => _RecordingEditorState();
+}
+
+class _RecordingEditorState extends State<RecordingEditor> {
+  Work work;
+  List<PerformanceModel> performances = [];
+
+  @override
+  void initState() {
+    super.initState();
+
+    if (widget.recording != null) {
+      // TODO: Initialize.
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final backend = Backend.of(context);
+
+    Future<void> selectWork() async {
+      final Work newWork = await Navigator.push(
+          context,
+          MaterialPageRoute(
+            builder: (context) => WorkSelector(),
+            fullscreenDialog: true,
+          ));
+
+      if (newWork != null) {
+        setState(() {
+          work = newWork;
+        });
+      }
+    }
+
+    return Scaffold(
+      appBar: AppBar(
+        title: Text('Recording'),
+        actions: <Widget>[
+          FlatButton(
+            child: Text('DONE'),
+            onPressed: () async {
+              final recording = Recording(
+                id: widget.recording?.id ?? generateId(),
+                work: null,
+              );
+
+              await backend.db.updateRecording(recording, performances);
+              Navigator.pop(context, recording);
+            },
+          )
+        ],
+      ),
+      body: ListView(
+        children: <Widget>[
+          work != null
+              ? StreamBuilder<List<Person>>(
+                  stream: backend.db.composersByWork(work.id).watch(),
+                  builder: (context, snapshot) {
+                    if (snapshot.hasData) {
+                      return ListTile(
+                        title: Text(work.title),
+                        subtitle: Text(snapshot.data
+                            .map((p) => '${p.firstName} ${p.lastName}')
+                            .join(', ')),
+                        onTap: selectWork,
+                      );
+                    } else {
+                      return ListTile(
+                        title: Text(work.title),
+                        subtitle: Text('…'),
+                        onTap: selectWork,
+                      );
+                    }
+                  },
+                )
+              : ListTile(
+                  title: Text('Work'),
+                  subtitle: Text('Select work'),
+                  onTap: selectWork,
+                ),
+          ListTile(
+            title: Text('Performers'),
+            trailing: IconButton(
+              icon: const Icon(Icons.add),
+              onPressed: () async {
+                final PerformanceModel model = await Navigator.push(
+                    context,
+                    MaterialPageRoute(
+                      builder: (context) => PerformerSelector(),
+                      fullscreenDialog: true,
+                    ));
+
+                if (model != null) {
+                  setState(() {
+                    performances.add(model);
+                  });
+                }
+              },
+            ),
+          ),
+          for (final performance in performances)
+            ListTile(
+              title: Text(performance.person != null
+                  ? '${performance.person.firstName} ${performance.person.lastName}'
+                  : performance.ensemble.name),
+              subtitle:
+                  performance.role != null ? Text(performance.role.name) : null,
+              trailing: IconButton(
+                icon: const Icon(Icons.delete),
+                onPressed: () {
+                  setState(() {
+                    performances.remove(performance);
+                  });
+                },
+              ),
+            ),
+          ListTile(
+            title: Text('Tracks'),
+            trailing: IconButton(
+              icon: const Icon(Icons.add),
+              onPressed: () {},
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}

lib/screens/home.dart

@@ -2,7 +2,7 @@ import 'package:flutter/material.dart';
 
 import '../backend.dart';
 import '../database.dart';
-import '../editors/work.dart';
+import '../editors/recording.dart';
 
 import 'person.dart';
 import 'settings.dart';
@@ -25,7 +25,7 @@ class HomeScreen extends StatelessWidget {
               ),
               PopupMenuItem(
                 value: 1,
-                child: Text('Add work'),
+                child: Text('Add recording'),
               ),
               PopupMenuItem(
                 value: 2,
@@ -39,7 +39,7 @@ class HomeScreen extends StatelessWidget {
                 Navigator.push(
                   context,
                   MaterialPageRoute(
-                    builder: (context) => WorkEditor(),
+                    builder: (context) => RecordingEditor(),
                     fullscreenDialog: true,
                   ),
                 );