<?php

  namespace Sabre\DAV;

  /**
   * SimpleCollection
   *
   * The SimpleCollection is used to quickly setup static directory structures.
   * Just create the object with a proper name, and add children to use it.
   *

   * @copyright Copyright (C) 2007-2014 fruux GmbH (https://fruux.com/).
   * @author Evert Pot (http://evertpot.com/)
   * @license http://sabre.io/license/ Modified BSD License

   */

  class SimpleCollection extends Collection {

  
      /**
       * List of childnodes
       *
       * @var array
       */
      protected $children = array();
  
      /**
       * Name of this resource
       *
       * @var string
       */
      protected $name;
  
      /**
       * Creates this node
       *
       * The name of the node must be passed, child nodes can also be passed.

       * This nodes must be instances of INode

       *
       * @param string $name
       * @param array $children
       */
      public function __construct($name,array $children = array()) {
  
          $this->name = $name;
          foreach($children as $child) {

              if (!($child instanceof INode)) throw new Exception('Only instances of Sabre\DAV\INode are allowed to be passed in the children argument');

              $this->addChild($child);
  
          }
  
      }
  
      /**
       * Adds a new childnode to this collection
       *

       * @param INode $child

       * @return void
       */

      public function addChild(INode $child) {

  
          $this->children[$child->getName()] = $child;
  
      }
  
      /**
       * Returns the name of the collection
       *
       * @return string
       */
      public function getName() {
  
          return $this->name;
  
      }
  
      /**
       * Returns a child object, by its name.
       *
       * This method makes use of the getChildren method to grab all the child nodes, and compares the name.
       * Generally its wise to override this, as this can usually be optimized
       *

       * This method must throw Sabre\DAV\Exception\NotFound if the node does not

       * exist.
       *
       * @param string $name

       * @throws Exception\NotFound
       * @return INode

       */
      public function getChild($name) {
  
          if (isset($this->children[$name])) return $this->children[$name];

          throw new Exception\NotFound('File not found: ' . $name . ' in \'' . $this->getName() . '\'');

  
      }
  
      /**
       * Returns a list of children for this collection
       *
       * @return array
       */
      public function getChildren() {
  
          return array_values($this->children);
  
      }
  
  
  }