todo save, popup, dismiss show dialog

lib/main.dart

@@ -1,28 +1,26 @@
 import 'package:flutter/material.dart';
+import 'package:todo/utils/dialog_box.dart';
+import 'package:todo/utils/todo_tile.dart';
 
 void main() {
   runApp(const MyApp());
 }
 
-class MyApp extends StatelessWidget {
+class MyApp extends StatefulWidget {
   const MyApp({Key? key}) : super(key: key);
 
+  @override
+  State<MyApp> createState() => _MyAppState();
+}
+
+class _MyAppState extends State<MyApp> {
   // This widget is the root of your application.
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      title: 'Flutter Demo',
+      title: 'Todo',
       theme: ThemeData(
-        // This is the theme of your application.
+        primarySwatch: Colors.red,
-        //
-        // Try running your application with "flutter run". You'll see the
-        // application has a blue toolbar. Then, without quitting the app, try
-        // changing the primarySwatch below to Colors.green and then invoke
-        // "hot reload" (press "r" in the console where you ran "flutter run",
-        // or simply save your changes to "hot reload" in a Flutter IDE).
-        // Notice that the counter didn't reset back to zero; the application
-        // is not restarted.
-        primarySwatch: Colors.blue,
       ),
       home: const MyHomePage(title: 'Flutter Demo Home Page'),
     );
@@ -32,15 +30,6 @@ class MyApp extends StatelessWidget {
 class MyHomePage extends StatefulWidget {
   const MyHomePage({Key? key, required this.title}) : super(key: key);
 
-  // This widget is the home page of your application. It is stateful, meaning
-  // that it has a State object (defined below) that contains fields that affect
-  // how it looks.
-
-  // This class is the configuration for the state. It holds the values (in this
-  // case the title) provided by the parent (in this case the App widget) and
-  // used by the build method of the State. Fields in a Widget subclass are
-  // always marked "final".
-
   final String title;
 
   @override
@@ -48,65 +37,57 @@ class MyHomePage extends StatefulWidget {
 }
 
 class _MyHomePageState extends State<MyHomePage> {
-  int _counter = 0;
+  final _controller = TextEditingController();
+  List todoList = [
+    ["Make Tutorial", true],
+    ["Buy car", false],
+    ["Buy new wife", true],
+    ["buy card", false],
+  ];
 
-  void _incrementCounter() {
+  void checkBoxChanged(bool? value, int index) {
     setState(() {
-      // This call to setState tells the Flutter framework that something has
+      todoList[index][1] = !todoList[index][1];
-      // changed in this State, which causes it to rerun the build method below
-      // so that the display can reflect the updated values. If we changed
-      // _counter without calling setState(), then the build method would not be
-      // called again, and so nothing would appear to happen.
-      _counter++;
     });
   }
 
+  void saveNewTask() {
+    setState(() {
+      todoList.add([_controller.text, false]);
+      _controller.clear();
+    });
+    Navigator.of(context).pop();
+  }
+
+  void createNewTask() {
+    showDialog(
+        context: context,
+        builder: (context) {
+          return DialogBox(
+            controller: _controller,
+            onCancel: () => Navigator.of(context).pop(),
+            onSave: saveNewTask,
+          );
+        });
+  }
+
   @override
   Widget build(BuildContext context) {
-    // This method is rerun every time setState is called, for instance as done
-    // by the _incrementCounter method above.
-    //
-    // The Flutter framework has been optimized to make rerunning build methods
-    // fast, so that you can just rebuild anything that needs updating rather
-    // than having to individually change instances of widgets.
     return Scaffold(
       appBar: AppBar(
-        // Here we take the value from the MyHomePage object that was created by
-        // the App.build method, and use it to set our appbar title.
         title: Text(widget.title),
       ),
-      body: Center(
+      body: ListView.builder(
-        // Center is a layout widget. It takes a single child and positions it
+          itemCount: todoList.length,
-        // in the middle of the parent.
+          itemBuilder: (context, index) {
-        child: Column(
+            return ToDoTile(
-          // Column is also a layout widget. It takes a list of children and
+              taskName: todoList[index][0],
-          // arranges them vertically. By default, it sizes itself to fit its
+              taskCompleted: todoList[index][1],
-          // children horizontally, and tries to be as tall as its parent.
+              onChanged: (value) => checkBoxChanged(value, index),
-          //
+            );
-          // Invoke "debug painting" (press "p" in the console, choose the
+          }),
-          // "Toggle Debug Paint" action from the Flutter Inspector in Android
-          // Studio, or the "Toggle Debug Paint" command in Visual Studio Code)
-          // to see the wireframe for each widget.
-          //
-          // Column has various properties to control how it sizes itself and
-          // how it positions its children. Here we use mainAxisAlignment to
-          // center the children vertically; the main axis here is the vertical
-          // axis because Columns are vertical (the cross axis would be
-          // horizontal).
-          mainAxisAlignment: MainAxisAlignment.center,
-          children: <Widget>[
-            const Text(
-              'You have pushed the button this many times:',
-            ),
-            Text(
-              '$_counter',
-              style: Theme.of(context).textTheme.headline4,
-            ),
-          ],
-        ),
-      ),
       floatingActionButton: FloatingActionButton(
-        onPressed: _incrementCounter,
+        onPressed: createNewTask,
         tooltip: 'Increment',
         child: const Icon(Icons.add),
       ), // This trailing comma makes auto-formatting nicer for build methods.

lib/utils/dialog_box.dart

@@ -0,0 +1,45 @@
+import 'package:flutter/material.dart';
+import 'package:todo/utils/my_button.dart';
+
+class DialogBox extends StatelessWidget {
+  DialogBox(
+      {Key? key,
+      required this.controller,
+      required this.onSave,
+      required this.onCancel})
+      : super(key: key);
+
+  final controller;
+  VoidCallback onSave;
+  VoidCallback onCancel;
+
+  @override
+  Widget build(BuildContext context) {
+    return AlertDialog(
+      backgroundColor: Theme.of(context).primaryColor,
+      title: Text("New Task"),
+      content: Container(
+        height: 120,
+        child: Column(
+          children: [
+            TextField(
+              controller: controller,
+              decoration: InputDecoration(
+                  border: OutlineInputBorder(), hintText: "Add new task"),
+            ),
+            SizedBox(
+              height: 40,
+            ),
+            Row(
+              mainAxisAlignment: MainAxisAlignment.end,
+              children: [
+                MyButton(text: "Cancel", onPressed: onCancel),
+                MyButton(text: "Save", onPressed: onSave),
+              ],
+            )
+          ],
+        ),
+      ),
+    );
+  }
+}

lib/utils/my_button.dart

@@ -0,0 +1,18 @@
+import 'package:flutter/material.dart';
+
+class MyButton extends StatelessWidget {
+  MyButton({Key? key, required this.text, required this.onPressed})
+      : super(key: key);
+
+  final String text;
+  VoidCallback onPressed;
+
+  @override
+  Widget build(BuildContext context) {
+    return MaterialButton(
+      onPressed: onPressed,
+      color: Theme.of(context).primaryColor,
+      child: Text(text),
+    );
+  }
+}

lib/utils/todo_tile.dart

@@ -0,0 +1,45 @@
+import 'package:flutter/material.dart';
+
+class ToDoTile extends StatelessWidget {
+  const ToDoTile(
+      {Key? key,
+      required this.taskName,
+      required this.taskCompleted,
+      required this.onChanged})
+      : super(key: key);
+
+  final String taskName;
+  final bool taskCompleted;
+  final Function(bool?)? onChanged;
+
+  @override
+  Widget build(BuildContext context) {
+    return Padding(
+      padding: const EdgeInsets.fromLTRB(25.0, 25, 25, 0),
+      child: Container(
+        padding: EdgeInsets.all(24.0),
+        child: Row(
+          mainAxisAlignment: MainAxisAlignment.spaceBetween,
+          children: [
+            Text(
+              taskName,
+              style: TextStyle(
+                  decoration: taskCompleted
+                      ? TextDecoration.lineThrough
+                      : TextDecoration.none),
+            ),
+            Checkbox(
+              value: taskCompleted,
+              onChanged: onChanged,
+              activeColor: Colors.redAccent,
+            )
+          ],
+        ),
+        decoration: BoxDecoration(
+          color: Theme.of(context).primaryColor,
+          borderRadius: BorderRadius.circular(10.0),
+        ),
+      ),
+    );
+  }
+}

pubspec.lock

@@ -5,58 +5,58 @@ packages:
     dependency: transitive
     description:
       name: async
-      url: "https://pub.dartlang.org"
+      sha256: "947bfcf187f74dbc5e146c9eb9c0f10c9f8b30743e341481c1e2ed3ecc18c20c"
+      url: "https://pub.dev"
     source: hosted
-    version: "2.8.2"
+    version: "2.11.0"
   boolean_selector:
     dependency: transitive
     description:
       name: boolean_selector
-      url: "https://pub.dartlang.org"
+      sha256: "6cfb5af12253eaf2b368f07bacc5a80d1301a071c73360d746b7f2e32d762c66"
+      url: "https://pub.dev"
     source: hosted
-    version: "2.1.0"
+    version: "2.1.1"
   characters:
     dependency: transitive
     description:
       name: characters
-      url: "https://pub.dartlang.org"
+      sha256: "04a925763edad70e8443c99234dc3328f442e811f1d8fd1a72f1c8ad0f69a605"
+      url: "https://pub.dev"
     source: hosted
-    version: "1.2.0"
+    version: "1.3.0"
-  charcode:
-    dependency: transitive
-    description:
-      name: charcode
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "1.3.1"
   clock:
     dependency: transitive
     description:
       name: clock
-      url: "https://pub.dartlang.org"
+      sha256: cb6d7f03e1de671e34607e909a7213e31d7752be4fb66a86d29fe1eb14bfb5cf
+      url: "https://pub.dev"
     source: hosted
-    version: "1.1.0"
+    version: "1.1.1"
   collection:
     dependency: transitive
     description:
       name: collection
-      url: "https://pub.dartlang.org"
+      sha256: f092b211a4319e98e5ff58223576de6c2803db36221657b46c82574721240687
+      url: "https://pub.dev"
     source: hosted
-    version: "1.15.0"
+    version: "1.17.2"
   cupertino_icons:
     dependency: "direct main"
     description:
       name: cupertino_icons
-      url: "https://pub.dartlang.org"
+      sha256: "1989d917fbe8e6b39806207df5a3fdd3d816cbd090fac2ce26fb45e9a71476e5"
+      url: "https://pub.dev"
     source: hosted
     version: "1.0.4"
   fake_async:
     dependency: transitive
     description:
       name: fake_async
-      url: "https://pub.dartlang.org"
+      sha256: "511392330127add0b769b75a987850d136345d9227c6b94c96a04cf4a391bf78"
+      url: "https://pub.dev"
     source: hosted
-    version: "1.2.0"
+    version: "1.3.1"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -66,7 +66,8 @@ packages:
     dependency: "direct dev"
     description:
       name: flutter_lints
-      url: "https://pub.dartlang.org"
+      sha256: b543301ad291598523947dc534aaddc5aaad597b709d2426d3a0e0d44c5cb493
+      url: "https://pub.dev"
     source: hosted
     version: "1.0.4"
   flutter_test:
@@ -78,30 +79,42 @@ packages:
     dependency: transitive
     description:
       name: lints
-      url: "https://pub.dartlang.org"
+      sha256: a2c3d198cb5ea2e179926622d433331d8b58374ab8f29cdda6e863bd62fd369c
+      url: "https://pub.dev"
     source: hosted
     version: "1.0.1"
   matcher:
     dependency: transitive
     description:
       name: matcher
-      url: "https://pub.dartlang.org"
+      sha256: "1803e76e6653768d64ed8ff2e1e67bea3ad4b923eb5c56a295c3e634bad5960e"
+      url: "https://pub.dev"
     source: hosted
-    version: "0.12.11"
+    version: "0.12.16"
+  material_color_utilities:
+    dependency: transitive
+    description:
+      name: material_color_utilities
+      sha256: "9528f2f296073ff54cb9fee677df673ace1218163c3bc7628093e7eed5203d41"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.5.0"
   meta:
     dependency: transitive
     description:
       name: meta
-      url: "https://pub.dartlang.org"
+      sha256: "3c74dbf8763d36539f114c799d8a2d87343b5067e9d796ca22b5eb8437090ee3"
+      url: "https://pub.dev"
     source: hosted
-    version: "1.7.0"
+    version: "1.9.1"
   path:
     dependency: transitive
     description:
       name: path
-      url: "https://pub.dartlang.org"
+      sha256: "8829d8a55c13fc0e37127c29fedf290c102f4e40ae94ada574091fe0ff96c917"
+      url: "https://pub.dev"
     source: hosted
-    version: "1.8.0"
+    version: "1.8.3"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -111,57 +124,65 @@ packages:
     dependency: transitive
     description:
       name: source_span
-      url: "https://pub.dartlang.org"
+      sha256: "53e943d4206a5e30df338fd4c6e7a077e02254531b138a15aec3bd143c1a8b3c"
+      url: "https://pub.dev"
     source: hosted
-    version: "1.8.1"
+    version: "1.10.0"
   stack_trace:
     dependency: transitive
     description:
       name: stack_trace
-      url: "https://pub.dartlang.org"
+      sha256: c3c7d8edb15bee7f0f74debd4b9c5f3c2ea86766fe4178eb2a18eb30a0bdaed5
+      url: "https://pub.dev"
     source: hosted
-    version: "1.10.0"
+    version: "1.11.0"
   stream_channel:
     dependency: transitive
     description:
       name: stream_channel
-      url: "https://pub.dartlang.org"
+      sha256: "83615bee9045c1d322bbbd1ba209b7a749c2cbcdcb3fdd1df8eb488b3279c1c8"
+      url: "https://pub.dev"
     source: hosted
-    version: "2.1.0"
+    version: "2.1.1"
   string_scanner:
     dependency: transitive
     description:
       name: string_scanner
-      url: "https://pub.dartlang.org"
+      sha256: "556692adab6cfa87322a115640c11f13cb77b3f076ddcc5d6ae3c20242bedcde"
+      url: "https://pub.dev"
     source: hosted
-    version: "1.1.0"
+    version: "1.2.0"
   term_glyph:
     dependency: transitive
     description:
       name: term_glyph
-      url: "https://pub.dartlang.org"
+      sha256: a29248a84fbb7c79282b40b8c72a1209db169a2e0542bce341da992fe1bc7e84
+      url: "https://pub.dev"
     source: hosted
-    version: "1.2.0"
+    version: "1.2.1"
   test_api:
     dependency: transitive
     description:
       name: test_api
-      url: "https://pub.dartlang.org"
+      sha256: "75760ffd7786fffdfb9597c35c5b27eaeec82be8edfb6d71d32651128ed7aab8"
+      url: "https://pub.dev"
     source: hosted
-    version: "0.4.3"
+    version: "0.6.0"
-  typed_data:
-    dependency: transitive
-    description:
-      name: typed_data
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "1.3.0"
   vector_math:
     dependency: transitive
     description:
       name: vector_math
-      url: "https://pub.dartlang.org"
+      sha256: "80b3257d1492ce4d091729e3a67a60407d227c27241d6927be0130c98e741803"
+      url: "https://pub.dev"
     source: hosted
-    version: "2.1.1"
+    version: "2.1.4"
+  web:
+    dependency: transitive
+    description:
+      name: web
+      sha256: dc8ccd225a2005c1be616fe02951e2e342092edf968cf0844220383757ef8f10
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.1.4-beta"
 sdks:
-  dart: ">=2.15.1 <3.0.0"
+  dart: ">=3.1.0-185.0.dev <4.0.0"