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<?
namespace Bitrix\Main\Composite;
use Bitrix\Main\NotSupportedException;
class BufferArea extends StaticArea
{
private $staticPart = null;
private $dynamicPart = null;
private $started = false;
private $ended = false;
/**
* @param $id
* @param bool $autoContainer
*/
public function __construct($id, $autoContainer = true)
{
parent::__construct($id);
if (!$autoContainer)
{
$this->setContainerId($id);
}
}
/**
* Starts an dynamic frame.
* Returns self object instance.
*
* @see BufferArea
* @see BufferArea::end
*
* @param null|string $stub
* @return BufferArea
* @throws NotSupportedException
*/
public function begin($stub = null)
{
if ($this->started)
{
throw new NotSupportedException("begin() has been called. Frame id: ".$this->getId().".");
}
$this->startDynamicArea();
$this->started = true;
$this->staticPart = $stub;
ob_start();
return $this;
}
/**
* Starts static part of dynamic frame which will be shown to user.
* Method begin() must be called before.
* Returns self object instance.
*
* @see BufferArea
* @see BufferArea::begin
*
* @return BufferArea
* @throws NotSupportedException
*/
public function beginStub()
{
if (!$this->started)
{
throw new NotSupportedException("begin() has not been called. Frame id: ".$this->getId().".");
}
$this->dynamicPart = ob_get_contents();
ob_end_clean();
ob_start();
return $this;
}
/**
* Ends dynamic part of the content.
* Method begin() must be called before.
* Returns self object instance.
*
* @see BufferArea
* @see BufferArea::begin
*
* @return BufferArea
* @throws NotSupportedException
*/
public function end()
{
if (!$this->started)
{
throw new NotSupportedException("begin() has not been called. Frame id: ".$this->getId().".");
}
if ($this->ended)
{
throw new NotSupportedException("begin() has been called. Frame id: ".$this->getId().".");
}
//if beginStub() was called
if ($this->dynamicPart !== null)
{
if ($this->staticPart !== null)
{
throw new NotSupportedException("begin() was called with a stub. Frame id: ".$this->getId().".");
}
$this->staticPart = ob_get_contents();
ob_end_clean();
echo $this->dynamicPart;
}
else
{
$this->dynamicPart = ob_get_contents();
if ($this->staticPart === null)
{
$this->staticPart = $this->dynamicPart;
}
ob_end_flush();
}
$this->setStub($this->staticPart);
$this->finishDynamicArea();
$this->ended = true;
return $this;
}
/**
* Returns true if Frame was started.
*
* @return bool
*/
public function isStarted()
{
return $this->started;
}
/**
* Returns true if Frame was ended.
*
* @return bool
*/
public function isEnded()
{
return $this->ended;
}
}
class_alias("Bitrix\\Main\\Composite\\BufferArea", "Bitrix\\Main\\Page\\FrameBuffered");
class_alias("Bitrix\\Main\\Composite\\BufferArea", "Bitrix\\Main\\Page\\FrameHelper");