<?php
/**
 * Created by PhpStorm.
 * User: insgeek
 * Date: 2017年2月22日
 * Time: 12:04
 * 适配器模式2
 */
namespace DesignPattern\AdapterPattern;

interface BookInterface
{
 public function turnPage();

 public function open();

 public function getPage():int ;
}

class Book implements BookInterface
{
 private $page;

 public function open()
 {
 // TODO: Implement open() method.
 $this->page = 1;
 }

 public function turnPage()
 {
 // TODO: Implement turnPage() method.
 $this->page++;
 }

 public function getPage() : int
 {
 // TODO: Implement getPage() method.
 return $this->page;
 }

}

class EBookAdapter implements BookInterface
{
 protected $eBook;

 public function __construct(EBookInterface $EBook)
 {
 $this->eBook = $EBook;
 }

 public function open()
 {
 // TODO: Implement open() method.
 $this->eBook->unlock();
 }

 public function turnPage()
 {
 // TODO: Implement turnPage() method.
 $this->eBook->pressNext();
 }

 public function getPage() : int
 {
 // TODO: Implement getPage() method.
 return $this->eBook->getPage()[0];
 }
}

interface EBookInterface
{
 public function unlock();

 public function pressNext();

 public function getPage() :array ;
}

class Kindle implements EBookInterface
{
 private $page = 1;

 private $totalPages = 100;
 public function pressNext()
 {
 // TODO: Implement pressNext() method.
 $this->page++;
 }

 public function unlock()
 {
 // TODO: Implement unlock() method.
 }

 public function getPage(): array
 {
 // TODO: Implement getPage() method.
 return [$this->page, $this->totalPages];
 }
}

$kindle = new Kindle();
$book = new EBookAdapter($kindle);
$book->open();
$book->getPage();
$book->turnPage();
$book->getPage();