get_ex 1.0.1

get_ex: ^1.0.1 copied to clipboard

example/lib/main.dart

// Complete example app demonstrating get_x features:
// - Counter with Rx reactive state
// - Todo list with GetXController + RxList
// - Named routing with middleware
// - DI bindings
// - Snackbar and dialog
// - Internationalization
import 'package:flutter/material.dart';
import 'package:get_ex/get_ex.dart';

// ---------------------------------------------------------------------------
// Translations
// ---------------------------------------------------------------------------

class AppTranslations extends GetXTranslations {
  @override
  Map<String, Map<String, String>> get keys => {
        'en_US': {
          'title': 'GetX Example',
          'counter': 'Counter',
          'todos': 'Todos',
          'increment': 'Increment',
          'add_todo': 'Add Todo',
          'greeting': 'Hello @name!',
          'switch_lang': 'Switch to Spanish',
        },
        'es_ES': {
          'title': 'Ejemplo GetX',
          'counter': 'Contador',
          'todos': 'Tareas',
          'increment': 'Incrementar',
          'add_todo': 'Agregar Tarea',
          'greeting': '¡Hola @name!',
          'switch_lang': 'Cambiar a Inglés',
        },
      };
}

// ---------------------------------------------------------------------------
// Controllers
// ---------------------------------------------------------------------------

class CounterController extends GetXController {
  final count = 0.obs;

  late GetXWorker _logWorker;

  @override
  void onInit() {
    super.onInit();
    _logWorker = ever(count, (val) {
      GetXLog.info('Counter changed to $val');
    });
  }

  void increment() => count.value++;
  void decrement() => count.value--;

  @override
  void onClose() {
    _logWorker.dispose();
    super.onClose();
  }
}

class TodoController extends GetXController {
  final todos = <String>[].obs;
  final textController = TextEditingController();

  void addTodo() {
    final text = textController.text.trim();
    if (text.isNotEmpty) {
      todos.add(text);
      textController.clear();
    }
  }

  void removeTodo(int index) => todos.removeAt(index);

  @override
  void onClose() {
    textController.dispose();
    super.onClose();
  }
}

// ---------------------------------------------------------------------------
// Bindings
// ---------------------------------------------------------------------------

class HomeBinding extends GetXBindings {
  @override
  void dependencies() {
    GetX.lazyPut(() => CounterController());
  }
}

class TodoBinding extends GetXBindings {
  @override
  void dependencies() {
    GetX.lazyPut(() => TodoController());
  }
}

// ---------------------------------------------------------------------------
// Middleware
// ---------------------------------------------------------------------------

class LogMiddleware extends GetXMiddleware {
  @override
  int get priority => 0;

  @override
  GetXPage? onPageCalled(GetXPage? page) {
    GetXLog.info('Navigating to: ${page?.name}');
    return page;
  }
}

// ---------------------------------------------------------------------------
// Pages
// ---------------------------------------------------------------------------

class HomePage extends StatelessWidget {
  const HomePage({super.key});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('title'.tr),
        actions: [
          IconButton(
            icon: const Icon(Icons.language),
            onPressed: () {
              final isEnglish =
                  GetXLocale.currentLocale.languageCode == 'en';
              GetX.updateLocale(
                isEnglish
                    ? const Locale('es', 'ES')
                    : const Locale('en', 'US'),
              );
            },
          ),
          IconButton(
            icon: const Icon(Icons.brightness_6),
            onPressed: () {
              GetX.changeThemeMode(
                GetX.isDarkMode ? ThemeMode.light : ThemeMode.dark,
              );
            },
          ),
        ],
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            Text(
              'greeting'.trParams({'name': 'Developer'}),
              style: Theme.of(context).textTheme.headlineSmall,
            ),
            const SizedBox(height: 32),
            ElevatedButton(
              onPressed: () => GetX.toNamed('/counter'),
              child: Text('counter'.tr),
            ),
            const SizedBox(height: 16),
            ElevatedButton(
              onPressed: () => GetX.toNamed('/todos'),
              child: Text('todos'.tr),
            ),
            const SizedBox(height: 16),
            ElevatedButton(
              onPressed: () {
                GetX.snackbar(
                  context,
                  'Hello!',
                  'This is a GetX snackbar',
                  snackPosition: GetXSnackPosition.top,
                  backgroundColor: Colors.blueAccent,
                );
              },
              child: const Text('Show Snackbar'),
            ),
            const SizedBox(height: 16),
            ElevatedButton(
              onPressed: () {
                GetX.defaultDialog(
                  context,
                  title: 'GetX Dialog',
                  content: const Text('This is a default dialog.'),
                  textConfirm: 'OK',
                  textCancel: 'Cancel',
                  onConfirm: () => GetXLog.info('Confirmed!'),
                );
              },
              child: const Text('Show Dialog'),
            ),
          ],
        ),
      ),
    );
  }
}

class CounterPage extends StatelessWidget {
  const CounterPage({super.key});

  @override
  Widget build(BuildContext context) {
    final controller = GetX.find<CounterController>();

    return Scaffold(
      appBar: AppBar(title: Text('counter'.tr)),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            obx(() => Text(
                  '${controller.count.value}',
                  style: Theme.of(context).textTheme.displayLarge,
                )),
            const SizedBox(height: 24),
            Row(
              mainAxisAlignment: MainAxisAlignment.center,
              children: [
                FloatingActionButton(
                  heroTag: 'decrement',
                  onPressed: controller.decrement,
                  child: const Icon(Icons.remove),
                ),
                const SizedBox(width: 16),
                FloatingActionButton(
                  heroTag: 'increment',
                  onPressed: controller.increment,
                  child: const Icon(Icons.add),
                ),
              ],
            ),
          ],
        ),
      ),
    );
  }
}

class TodoPage extends StatelessWidget {
  const TodoPage({super.key});

  @override
  Widget build(BuildContext context) {
    final controller = GetX.find<TodoController>();

    return Scaffold(
      appBar: AppBar(title: Text('todos'.tr)),
      body: Column(
        children: [
          Padding(
            padding: const EdgeInsets.all(16),
            child: Row(
              children: [
                Expanded(
                  child: TextField(
                    controller: controller.textController,
                    decoration: InputDecoration(
                      hintText: 'add_todo'.tr,
                      border: const OutlineInputBorder(),
                    ),
                    onSubmitted: (_) => controller.addTodo(),
                  ),
                ),
                const SizedBox(width: 8),
                IconButton(
                  icon: const Icon(Icons.add),
                  onPressed: controller.addTodo,
                ),
              ],
            ),
          ),
          Expanded(
            child: obx(() => ListView.builder(
                  itemCount: controller.todos.length,
                  itemBuilder: (context, index) {
                    return ListTile(
                      title: Text(controller.todos[index]),
                      trailing: IconButton(
                        icon: const Icon(Icons.delete),
                        onPressed: () => controller.removeTodo(index),
                      ),
                    );
                  },
                )),
          ),
        ],
      ),
    );
  }
}

// ---------------------------------------------------------------------------
// Main
// ---------------------------------------------------------------------------

void main() {
  GetX.config(enableLog: true);

  runApp(
    GetXApp(
      title: 'GetX Example',
      initialRoute: '/',
      translations: AppTranslations(),
      locale: const Locale('en', 'US'),
      fallbackLocale: const Locale('en', 'US'),
      theme: ThemeData.light(useMaterial3: true),
      darkTheme: ThemeData.dark(useMaterial3: true),
      themeMode: ThemeMode.system,
      debugShowCheckedModeBanner: false,
      pages: [
        GetXPage(
          name: '/',
          page: () => const HomePage(),
          middlewares: [LogMiddleware()],
        ),
        GetXPage(
          name: '/counter',
          page: () => const CounterPage(),
          binding: HomeBinding(),
          transition: GetXTransition.fade,
          middlewares: [LogMiddleware()],
        ),
        GetXPage(
          name: '/todos',
          page: () => const TodoPage(),
          binding: TodoBinding(),
          transition: GetXTransition.rightToLeft,
          middlewares: [LogMiddleware()],
        ),
      ],
    ),
  );
}