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<?php
namespace Bitrix\Translate;
/**
* Filter.
*
* @property string|string[] $langId Language code.
* @property int $pathId Path index Id.
* @property int $nextPathId Path index Id.
* @property int $nextLangPathId Lang path Id.
* @property int $fileId File Id.
* @property int $nextFileId File Id.
* @property string $path File stricture path.
* @property int $tabId Storage Id.
*
*/
class Filter implements \Iterator, \Countable, \Serializable, \ArrayAccess
{
const STORAGE_NAME = 'TRANSLATE_FILTER';
const STORAGE_TAB_CNT = 'TRANSLATE_FILTER_TAB';
/** @var array */
private $params = array();
/** @var array */
private $iterateCodes = array();
/** @var int */
private $iteratePosition;
/**
* Constructs filter object.
*
* @param array|int $param Init params.
*/
public function __construct($param = null)
{
if (is_array($param))
{
$this->params = $param;
}
elseif (is_int($param) && (int)$param > 0)
{
$this->restore((int)$param);
}
}
//region getter/setter
/**
* Checks existence of the parameter by its code.
*
* @param string $code Parameter code.
*
* @return boolean
*/
public function __isset($code)
{
return isset($this->params[$code]);
}
/**
* Returns parameter by its code.
*
* @param string $code Parameter code.
*
* @return string|mixed|null
*/
public function __get($code)
{
return $this->params[$code] ?: null;
}
/**
* Add parameter to collection.
*
* @param string $code Parameter code.
* @param string|mixed $value Parameter value.
*
* @return void
*/
public function __set($code, $value)
{
$this->params[$code] = $value;
$this->iterateCodes[] = $code;
}
/**
* Unset parameter by its code.
*
* @param string $code Parameter code.
*
* @return void
*/
public function __unset($code)
{
if (isset($this->params[$code]))
{
unset($this->params[$code]);
$this->iterateCodes = array_keys($this->params);
}
}
//endregion
//region Iterator
/**
* Return the current phrase element.
*
* @return string|null
*/
public function current()
{
$code = $this->iterateCodes[$this->iteratePosition];
return $this->params[$code] ?: null;
}
/**
* Move forward to next phrase element.
*
* @return void
*/
public function next()
{
++ $this->iteratePosition;
}
/**
* Return the key of the current phrase element.
*
* @return int|null
*/
public function key()
{
return $this->iterateCodes[$this->iteratePosition] ?: null;
}
/**
* Checks if current position is valid.
*
* @return boolean
*/
public function valid()
{
return isset($this->iterateCodes[$this->iteratePosition], $this->params[$this->iterateCodes[$this->iteratePosition]]);
}
/**
* Rewind the Iterator to the first element.
*
* @return void
*/
public function rewind()
{
$this->iteratePosition = 0;
$this->iterateCodes = array_keys($this->params);
}
//endregion
// region Serializable
/**
* String representation of object.
* @return string
*/
public function serialize()
{
return serialize($this->params);
}
/**
* Constructs the object from a string representation.
* @param string $data Data to deserialize.
*/
public function unserialize($data)
{
if (!empty($data))
{
$deserialized = unserialize($data, [false]);
if (is_array($deserialized))
{
$this->params = $deserialized;
}
}
}
//endregion
// region Storage
/**
* Returns storage tab Id.
* @param bool $increment Generate new id.
* @return int
*/
public static function getTabId($increment = true)
{
$tabId = 0;
if (isset($_SESSION[self::STORAGE_TAB_CNT]))
{
$tabId = $_SESSION[self::STORAGE_TAB_CNT];
}
if ($increment)
{
$tabId ++;
$_SESSION[self::STORAGE_TAB_CNT] = $tabId;
}
return $tabId;
}
/**
* Stories the object into storage.
* @return void
*/
public function store()
{
if (!isset($_SESSION[self::STORAGE_NAME]))
{
$_SESSION[self::STORAGE_NAME] = array();
}
if (!isset($this->tabId))
{
$this->tabId = self::getTabId();
}
$_SESSION[self::STORAGE_NAME][$this->tabId] = $this->serialize();
}
/**
* Reconstructs the object from storage.
* @param int $id In of the saved date in storage.
*/
public function restore($id)
{
if (isset($_SESSION[self::STORAGE_NAME], $_SESSION[self::STORAGE_NAME][(int)$id]))
{
$this->unserialize($_SESSION[self::STORAGE_NAME][(int)$id]);
}
$this->tabId = (int)$id;
}
// endregion
//region ArrayAccess
/**
* Checks existence of the param by its code.
*
* @param string $code Phrase code.
*
* @return boolean
*/
public function offsetExists($code)
{
return isset($this->params[$code]);
}
/**
* Returns param by its code.
*
* @param string $code Param code.
*
* @return mixed|null
*/
public function offsetGet($code)
{
if (isset($this->params[$code]))
{
return $this->params[$code];
}
return null;
}
/**
* Offset to set.
*
* @param string $code Param code.
* @param mixed $param Param value.
*
* @return void
*/
public function offsetSet($code, $param)
{
$this->params[$code] = $param;
}
/**
* Unset param value by code.
*
* @param string $code Param code.
*
* @return void
*/
public function offsetUnset($code)
{
if (isset($this->params[$code]))
{
unset($this->params[$code]);
}
}
// endregion
//region Countable
/**
* Returns amount params in the filter now.
*
* @return int
*/
public function count()
{
return is_array($this->params) ? count($this->params) : 0;
}
//endregion
}