外观模式（Facade）

/*
 * 一个保安系统的，由录像机、电灯、红外线监控和警报器组成。保安系统的操作
 * 人员需要经常将这些仪器启动和关闭。保安类需要用到所有的录像机(Camera)、
 * 电灯(Light)、感应器(Sensor)和警报器(Alarm)对象，保安觉得使用不方便。应
 * 用外观模式，用C#控制台应用程序改进该设计。
 */
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Facade
{
    //照相机类
    class Camera
    {
        public void Start()
        {
            Console.WriteLine("启动录像机。");
        }
        public void Close()
        {
            Console.WriteLine("关闭录像机。");
        }
    }
    //灯光类
    class Light
    {
        public void Start()
        {
            Console.WriteLine("启动灯光。");
        }
        public void Close()
        {
            Console.WriteLine("关闭灯光。");
        }
    }
    //感应器类
    class Sensor
    {
        public void Start()
        {
            Console.WriteLine("启动感应器。");
        }
        public void Close()
        {
            Console.WriteLine("关闭感应器。");
        }
    }
    //警报器类
    class Alarm
    {
        public void Start()
        {
            Console.WriteLine("启动警报器。");
        }
        public void Close()
        {
            Console.WriteLine("关闭警报器。");
        }
    }
    //遥控器类
    class RemoteControl
    {
        private Alarm alarm;
        private Sensor sensor;
        private Light light;
        private Camera camera;

        public RemoteControl()
        {
            alarm = new Alarm();
            sensor = new Sensor();
            light = new Light();
            camera = new Camera();
        }
        public void StartCamera()
        {
            camera.Start();
        }
        public void CloseCamera()
        {
            camera.Close();
        }
        public void StartLight()
        {
            light.Start();
        }
        public void CloseLight()
        {
            light.Close();
        }
        public void StartSensor()
        {
            sensor.Start();
        }
        public void CloseSensor()
        {
            sensor.Close();
        }
        public void StartAlarm()
        {
            alarm.Start();
        }
        public void CloseAlarm()
        {
            alarm.Close();
        }
    }
    //保安类
    class Security
    {
        private string name;
        private RemoteControl rc;
        public Security(string name,RemoteControl rc)
        {
            this.name = name;
            this.rc = rc;
            Console.WriteLine("{0}值班中。他手里拿了一个遥控器。\n", name);
        }
        public RemoteControl Control()
        {
            return this.rc;
        }
    }
    class Program
    {
        static void Main(string[] args)
        {
            Security baoan = new Security("包鞍",new RemoteControl());

            baoan.Control().StartAlarm();
            baoan.Control().StartCamera();
            baoan.Control().StartLight();
            baoan.Control().StartSensor();

            Console.WriteLine("");
            baoan.Control().CloseAlarm();
            baoan.Control().CloseCamera();
            baoan.Control().CloseLight();
            baoan.Control().CloseSensor();
        }
    }
}