interface/modules/zend_modules/library/Zend/Barcode/RendererPluginManager.php

   1 <?php
   2 /**
   3  * Zend Framework (http://framework.zend.com/)
   4  *
   5  * @link      http://github.com/zendframework/zf2 for the canonical source repository
   6  * @copyright Copyright (c) 2005-2013 Zend Technologies USA Inc. (http://www.zend.com)
   7  * @license   http://framework.zend.com/license/new-bsd New BSD License
   8  */
   9
  10 namespace Zend\Barcode;
  11
  12 use Zend\ServiceManager\AbstractPluginManager;
  13
  14 /**
  15  * Plugin manager implementation for barcode renderers.
  16  *
  17  * Enforces that barcode parsers retrieved are instances of
  18  * Renderer\AbstractRenderer. Additionally, it registers a number of default
  19  * barcode renderers.
  20  */
  21 class RendererPluginManager extends AbstractPluginManager
  22 {
  23     /**
  24      * @var bool Ensure services are not shared
  25      */
  26     protected $shareByDefault = false;
  27
  28     /**
  29      * Default set of barcode renderers
  30      *
  31      * @var array
  32      */
  33     protected $invokableClasses = array(
  34         'image' => 'Zend\Barcode\Renderer\Image',
  35         'pdf'   => 'Zend\Barcode\Renderer\Pdf',
  36         'svg'   => 'Zend\Barcode\Renderer\Svg'
  37     );
  38
  39     /**
  40      * Validate the plugin
  41      *
  42      * Checks that the barcode parser loaded is an instance
  43      * of Renderer\AbstractRenderer.
  44      *
  45      * @param  mixed $plugin
  46      * @return void
  47      * @throws Exception\InvalidArgumentException if invalid
  48      */
  49     public function validatePlugin($plugin)
  50     {
  51         if ($plugin instanceof Renderer\AbstractRenderer) {
  52             // we're okay
  53             return;
  54         }
  55
  56         throw new Exception\InvalidArgumentException(sprintf(
  57             'Plugin of type %s is invalid; must extend %s\Renderer\AbstractRenderer',
  58             (is_object($plugin) ? get_class($plugin) : gettype($plugin)),
  59             __NAMESPACE__
  60         ));
  61     }
  62 }