نمط Factory (Simple + Factory Method)

// Simple Factory
class NotificationFactory {
  static createNotification(type) {
    switch (type) {
      case 'email':
        return new EmailNotification();
      case 'sms':
        return new SMSNotification();
      case 'push':
        return new PushNotification();
      default:
        throw new Error('نوع إشعار غير معروف');
    }
  }
}

class EmailNotification { send(msg) { console.log(`📧 ${msg}`); } }
class SMSNotification { send(msg) { console.log(`📱 ${msg}`); } }
class PushNotification { send(msg) { console.log(`🔔 ${msg}`); } }

// الاستخدام
const notif = NotificationFactory.createNotification('email');
notif.send('مرحبًا!');

// Creator
class Dialog {
  createButton() {
    throw new Error('يجب تنفيذ createButton');
  }

  render() {
    const button = this.createButton();
    button.onClick(() => console.log('تم الضغط'));
    button.render();
  }
}

// Product
class Button {
  render() {}
  onClick(fn) {}
}

// Concrete Products
class WindowsButton extends Button {
  render() { console.log('🪟 زر ويندوز'); }
}

class WebButton extends Button {
  render() { console.log('🌐 زر ويب'); }
}

class MobileButton extends Button {
  render() { console.log('📱 زر موبايل'); }
}

// Concrete Creators
class WindowsDialog extends Dialog {
  createButton() { return new WindowsButton(); }
}

class WebDialog extends Dialog {
  createButton() { return new WebButton(); }
}

class MobileDialog extends Dialog {
  createButton() { return new MobileButton(); }
}

// الاستخدام — إنشاء الحوار المناسب حسب النظام
const dialog = new WindowsDialog();
dialog.render(); // 🪟 زر ويندوز

from abc import ABC, abstractmethod

class Button(ABC):
    @abstractmethod
    def render(self):
        pass

class WindowsButton(Button):
    def render(self):
        print("زر ويندوز 🪟")

class Dialog(ABC):
    @abstractmethod
    def create_button(self):
        pass

    def render(self):
        btn = self.create_button()
        btn.render()

class WindowsDialog(Dialog):
    def create_button(self):
        return WindowsButton()

Dialog = WindowsDialog()
Dialog.render()