<?php

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if (!class_exists('UDP_Google_Client')) {

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require_once dirname(__FILE__) . '/../autoload.php';

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}

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/**

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* Extension to the regular Google_Model that automatically

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* exposes the items array for iteration, so you can just

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* iterate over the object rather than a reference inside.

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*/

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class Google_Collection extends Google_Model implements Iterator, Countable

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{

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protected $collection_key = 'items';

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public function rewind()

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{

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if (isset($this->modelData[$this->collection_key])

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&& is_array($this->modelData[$this->collection_key])) {

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reset($this->modelData[$this->collection_key]);

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}

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}

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public function current()

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{

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$this->coerceType($this->key());

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if (is_array($this->modelData[$this->collection_key])) {

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return current($this->modelData[$this->collection_key]);

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}

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}

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public function key()

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{

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if (isset($this->modelData[$this->collection_key])

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&& is_array($this->modelData[$this->collection_key])) {

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return key($this->modelData[$this->collection_key]);

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}

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}

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public function next()

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{

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return next($this->modelData[$this->collection_key]);

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}

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public function valid()

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{

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$key = $this->key();

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return $key !== null && $key !== false;

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}

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public function count()

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{

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if (!isset($this->modelData[$this->collection_key])) {

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return 0;

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}

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return count($this->modelData[$this->collection_key]);

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}

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public function offsetExists ($offset)

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{

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if (!is_numeric($offset)) {

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return parent::offsetExists($offset);

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}

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return isset($this->modelData[$this->collection_key][$offset]);

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}

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public function offsetGet($offset)

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{

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if (!is_numeric($offset)) {

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return parent::offsetGet($offset);

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}

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$this->coerceType($offset);

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return $this->modelData[$this->collection_key][$offset];

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}

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public function offsetSet($offset, $value)

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{

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if (!is_numeric($offset)) {

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return parent::offsetSet($offset, $value);

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}

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$this->modelData[$this->collection_key][$offset] = $value;

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}

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public function offsetUnset($offset)

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{

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if (!is_numeric($offset)) {

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return parent::offsetUnset($offset);

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}

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unset($this->modelData[$this->collection_key][$offset]);

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}

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private function coerceType($offset)

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{

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$typeKey = $this->keyType($this->collection_key);

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if (isset($this->$typeKey) && !is_object($this->modelData[$this->collection_key][$offset])) {

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$type = $this->$typeKey;

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$this->modelData[$this->collection_key][$offset] =

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new $type($this->modelData[$this->collection_key][$offset]);

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}

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}

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}

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