Add functionality to edit sheets with save and restore

lib/sheet.dart

@@ -2,13 +2,15 @@ import 'dart:async';
 import 'dart:ui';
 
 import 'package:flutter/material.dart';
+import 'package:sheetless/edit_bottom_sheet.dart';
 import 'package:sheetless/storage_helper.dart';
+import 'package:sheetless/upload_queue.dart';
 
 class Sheet {
   final String uuid;
-  final String name;
-  final String composerUuid;
-  final String composerName;
+  String name;
+  String composerUuid;
+  String composerName;
 
   Sheet({
     required this.uuid,
@@ -92,6 +94,40 @@ class _SheetsWidgetState extends State<SheetsWidget> {
     _searchController.clear();
   }
 
+  void _openEditSheet(BuildContext context, Sheet sheet) {
+    showModalBottomSheet(
+      context: context,
+      isScrollControlled: true,
+      builder: (_) => EditItemBottomSheet(
+        sheet: sheet,
+        onSheetEdited: (String newName, String newComposer) {
+          if (newName != sheet.name) {
+            storageHelper.writeChange(
+              Change(
+                type: ChangeType.sheetNameChange,
+                sheetUuid: sheet.uuid,
+                value: newName,
+              ),
+            );
+          }
+          if (newComposer != sheet.composerName) {
+            storageHelper.writeChange(
+              Change(
+                type: ChangeType.composerNameChange,
+                sheetUuid: sheet.uuid,
+                value: newComposer,
+              ),
+            );
+          }
+          setState(() {
+            sheet.name = newName;
+            sheet.composerName = newComposer;
+          });
+        },
+      ),
+    );
+  }
+
   @override
   Widget build(BuildContext context) {
     return Column(
@@ -134,6 +170,7 @@ class _SheetsWidgetState extends State<SheetsWidget> {
                     widget.sheets.remove(sheet);
                     widget.sheets.insert(0, sheet);
                   }),
+                  onLongPress: () => _openEditSheet(context, sheet),
                 );
               },
             ),