context extension and email extension added

Author: VB10

lib/core/constants/app/app_constants.dart

@@ -3,4 +3,6 @@ class ApplicationConstants {
   static const IPAD_NAME = "IPAD";
 
   static const COMPANY_NAME = "HWA";
+
+  static const EMAIL_REGIEX = r"^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}\$";
 }

lib/core/extension/context_extension.dart

@@ -0,0 +1,28 @@
+import 'package:flutter/material.dart';
+
+extension ContextExtension on BuildContext {
+  MediaQueryData get mediaQuery => MediaQuery.of(this);
+}
+
+extension MediaQueryExtension on BuildContext {
+  double get height => mediaQuery.size.height;
+  double get width => mediaQuery.size.width;
+
+  double get lowValue => height * 0.01;
+  double get normalValue => height * 0.02;
+  double get mediumValue => height * 0.04;
+  double get highValue => height * 0.1;
+}
+
+extension ThemeExtension on BuildContext {
+  ThemeData get theme => Theme.of(this);
+  TextTheme get textTheme => theme.textTheme;
+  ColorScheme get colors => theme.colorScheme;
+}
+
+extension PaddingExtension on BuildContext {
+  EdgeInsets get paddingLow => EdgeInsets.all(lowValue);
+  EdgeInsets get paddingNormal => EdgeInsets.all(normalValue);
+  EdgeInsets get paddingMedium => EdgeInsets.all(mediumValue);
+  EdgeInsets get paddingHigh => EdgeInsets.all(highValue);
+}

lib/core/extension/string_extension.dart

@@ -1,5 +1,8 @@
 import 'package:easy_localization/easy_localization.dart';
+import 'package:fluttermvvmtemplate/core/constants/app/app_constants.dart';
 
 extension StringLocalization on String {
   String get locale => this.tr();
+
+  String get isValidEmail => this.contains(RegExp(ApplicationConstants.EMAIL_REGIEX)) ? null : "Email does not valid";
 }

lib/view/authenticate/login/view/login_view.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:fluttermvvmtemplate/core/base/view/base_widget.dart';
+import 'package:fluttermvvmtemplate/core/extension/context_extension.dart';
 import 'package:fluttermvvmtemplate/view/authenticate/login/viewmodel/login_view_model.dart';
 
 class LoginView extends StatelessWidget {
@@ -10,7 +11,31 @@ class LoginView extends StatelessWidget {
       onModelReady: (model) {
         model.setContext(context);
       },
-      onPageBuilder: (BuildContext context, LoginViewModel value) => Scaffold(),
+      onPageBuilder: (BuildContext context, LoginViewModel value) => buildScaffold(context),
+    );
+  }
+
+  Scaffold buildScaffold(BuildContext context) => Scaffold(
+        body: ListView(
+          children: <Widget>[
+            Container(
+              padding: context.paddingLow,
+              height: context.height * .4,
+              color: context.colors.background,
+              child: buildText(context),
+            ),
+            Padding(
+              padding: EdgeInsets.symmetric(horizontal: context.lowValue),
+              child: Placeholder(),
+            )
+          ],
+        ),
+      );
+
+  Text buildText(BuildContext context) {
+    return Text(
+      "Hello",
+      style: context.textTheme.subtitle1,
     );
   }
 }

lib/view/authenticate/test/view/test_view.dart

@@ -31,16 +31,18 @@ class _TestsViewState extends BaseState<TestsView> {
   }
 
   Widget get scaffoldBody => Scaffold(
-        appBar: AppBar(
-          leading: Text(LocaleManager.instance.getStringValue(PreferencesKeys.TOKEN)),
-          title: textWelcomeWidget(),
-          actions: [iconButtonChangeTheme()],
-        ),
+        appBar: appBar(),
         floatingActionButton: floatingActionButtonNumberIncrement,
         body: textNumber,
       );
 
-  Text textWelcomeWidget() => Text(LocaleKeys.welcome.locale);
+  AppBar appBar() {
+    return AppBar(
+      leading: Text(LocaleManager.instance.getStringValue(PreferencesKeys.TOKEN)),
+      title: textWelcomeWidget(),
+      actions: [iconButtonChangeTheme()],
+    );
+  }
 
   IconButton iconButtonChangeTheme() {
     return IconButton(
@@ -50,17 +52,29 @@ class _TestsViewState extends BaseState<TestsView> {
         });
   }
 
+  Widget get textNumber {
+    return Column(
+      children: <Widget>[
+        Observer(
+          builder: (context) => Text(
+            viewModel.number.toString(),
+          ),
+        ),
+      ],
+    );
+  }
+
+  Text textWelcomeWidget() => Text(LocaleKeys.welcome.locale);
+
   FloatingActionButton get floatingActionButtonNumberIncrement {
     return FloatingActionButton(
       onPressed: () => viewModel.incrementNumber(),
     );
   }
+}
 
-  Widget get textNumber {
-    return Observer(
-      builder: (context) => Text(
-        viewModel.number.toString(),
-      ),
-    );
-  }
+extension _FormArea on _TestsViewState {
+  TextFormField get mailField => TextFormField(
+        validator: (value) => value.isValidEmail,
+      );
 }