add controller template

example/ios/Flutter/Debug.xcconfig

@@ -1 +1,2 @@
+#include? "Pods/Target Support Files/Pods-Runner/Pods-Runner.debug.xcconfig"
 #include "Generated.xcconfig"

example/ios/Flutter/Release.xcconfig

@@ -1 +1,2 @@
+#include? "Pods/Target Support Files/Pods-Runner/Pods-Runner.release.xcconfig"
 #include "Generated.xcconfig"

example/ios/Podfile

@@ -0,0 +1,41 @@
+# Uncomment this line to define a global platform for your project
+# platform :ios, '9.0'
+
+# CocoaPods analytics sends network stats synchronously affecting flutter build latency.
+ENV['COCOAPODS_DISABLE_STATS'] = 'true'
+
+project 'Runner', {
+  'Debug' => :debug,
+  'Profile' => :release,
+  'Release' => :release,
+}
+
+def flutter_root
+  generated_xcode_build_settings_path = File.expand_path(File.join('..', 'Flutter', 'Generated.xcconfig'), __FILE__)
+  unless File.exist?(generated_xcode_build_settings_path)
+    raise "#{generated_xcode_build_settings_path} must exist. If you're running pod install manually, make sure flutter pub get is executed first"
+  end
+
+  File.foreach(generated_xcode_build_settings_path) do |line|
+    matches = line.match(/FLUTTER_ROOT\=(.*)/)
+    return matches[1].strip if matches
+  end
+  raise "FLUTTER_ROOT not found in #{generated_xcode_build_settings_path}. Try deleting Generated.xcconfig, then run flutter pub get"
+end
+
+require File.expand_path(File.join('packages', 'flutter_tools', 'bin', 'podhelper'), flutter_root)
+
+flutter_ios_podfile_setup
+
+target 'Runner' do
+  use_frameworks!
+  use_modular_headers!
+
+  flutter_install_all_ios_pods File.dirname(File.realpath(__FILE__))
+end
+
+post_install do |installer|
+  installer.pods_project.targets.each do |target|
+    flutter_additional_ios_build_settings(target)
+  end
+end

example/lib/controlled.dart

@@ -0,0 +1,78 @@
+import 'package:flutter/material.dart';
+
+main() {
+  runApp(MaterialApp(
+    home: Scaffold(
+      body: Center(
+        child: ControlledWidget(
+            initialString: 'old value',
+            onCreate: (controller) async {
+              Future.delayed(const Duration(seconds: 5), () {
+                controller.value = 'new value';
+              });
+            }),
+      ),
+    ),
+  ));
+}
+
+enum TimePrecision {
+  updateOnly,
+  everySecond,
+  everyMinute
+}
+
+class ControlledWidget extends StatefulWidget {
+  final void Function(MyController) onCreate;
+  final String? initialString;
+  final TimePrecision precision;
+  const ControlledWidget({
+    Key? key,
+    required this.onCreate,
+    this.initialString,
+    this.precision = TimePrecision.updateOnly,
+  }) : super(key: key);
+
+  @override
+  _ControlledWidgetState createState() => _ControlledWidgetState();
+}
+
+class _ControlledWidgetState extends State<ControlledWidget> {
+  late final MyController _controller;
+
+  @override
+  void initState() {
+    _controller = MyController(widget.initialString ?? '');
+    _controller.addListener(_onChange);
+    widget.onCreate(_controller);
+    super.initState();
+  }
+
+  void _onChange() {
+    setState(() {});
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Text(_controller.value);
+  }
+
+  @override
+  void dispose() {
+    _controller.dispose();
+    super.dispose();
+  }
+}
+
+class MyController extends ChangeNotifier {
+  String _currentString;
+
+  MyController(String initial) : _currentString = initial;
+
+  String get value => _currentString;
+
+  set value(String value) {
+    _currentString = value;
+    notifyListeners();
+  }
+}

example/lib/main.dart

@@ -3,6 +3,8 @@ import 'package:google_maps_flutter/google_maps_flutter.dart';
 import 'package:google_track_trace/google_track_trace.dart';
 
 class TrackTraceDemo extends StatefulWidget {
+  const TrackTraceDemo({Key? key}) : super(key: key);
+
   @override
   State<TrackTraceDemo> createState() => _TrackTraceDemoState();
 }
@@ -22,7 +24,7 @@ class _TrackTraceDemoState extends State<TrackTraceDemo> {
           markerId: MarkerId('Eind locatie'),
           position: LatLng(51.958996, 6.296520),
         ),
-        travelMode: TravelMode.Bicycling,
+        travelMode: TravelMode.bicycling,
         onMapCreated: (ctr) => {controller = ctr},
       ),
     );
@@ -30,6 +32,6 @@ class _TrackTraceDemoState extends State<TrackTraceDemo> {
 }
 
 void main() {
-  runApp(MaterialApp(home: TrackTraceDemo(
+  runApp(const MaterialApp(home: TrackTraceDemo(
   )));
 }

example/test/widget_test.dart

@@ -7,13 +7,13 @@
 
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
-
 import 'package:tracktrace_example/main.dart';
 
+
 void main() {
   testWidgets('Counter increments smoke test', (WidgetTester tester) async {
     // Build our app and trigger a frame.
-    await tester.pumpWidget(const MyApp());
+    await tester.pumpWidget(const TrackTraceDemo());
 
     // Verify that our counter starts at 0.
     expect(find.text('0'), findsOneWidget);

lib/src/directions_controller.dart

@@ -1,6 +1,6 @@
 part of google_track_trace;
 
-enum TravelMode { Driving, Walking, Bicycling, Transit }
+enum TravelMode { driving, walking, bicycling, transit }
 
 class DirectionsRepository {
   static const String _baseUrl = '/maps/api/directions/json';
@@ -19,10 +19,10 @@ class DirectionsRepository {
         'key':
             key, // get this key from the controller
         'mode': <TravelMode, String>{
-          TravelMode.Driving: 'driving',
-          TravelMode.Bicycling: 'bicycling',
-          TravelMode.Transit: 'transit',
-          TravelMode.Walking: 'walking',
+          TravelMode.driving: 'driving',
+          TravelMode.bicycling: 'bicycling',
+          TravelMode.transit: 'transit',
+          TravelMode.walking: 'walking',
         }[mode],
       };
       final uri = Uri.https('maps.googleapis.com', _baseUrl, queryParameters);

lib/src/google_map.dart

@@ -12,7 +12,7 @@ class GoogleTrackTraceMap extends StatefulWidget {
     required this.startPosition,
     required this.destinationPosition,
     this.currentPosition,
-    this.travelMode = TravelMode.Driving,
+    this.travelMode = TravelMode.driving,
   })  : assert(true),
         super(key: key);
 

test/google_track_trace_test.dart

@@ -1,12 +1,8 @@
 import 'package:flutter_test/flutter_test.dart';
 
-import 'package:google_track_trace/google_track_trace.dart';
 
 void main() {
   test('adds one to input values', () {
-    final calculator = Calculator();
-    expect(calculator.addOne(2), 3);
-    expect(calculator.addOne(-7), -6);
-    expect(calculator.addOne(0), 1);
+
   });
 }