From 37f4d81a1ce6bdea84b00a38b0c8fc32f82f9e5d Mon Sep 17 00:00:00 2001
From: xue <>
Date: Tue, 11 Apr 2006 00:58:46 +0000
Subject: Refactored page state persister.

---
 framework/Web/UI/TPageStatePersister.php | 44 +++++++-------------------------
 1 file changed, 9 insertions(+), 35 deletions(-)

(limited to 'framework/Web/UI/TPageStatePersister.php')

diff --git a/framework/Web/UI/TPageStatePersister.php b/framework/Web/UI/TPageStatePersister.php
index 3551b5f6..ff5b088b 100644
--- a/framework/Web/UI/TPageStatePersister.php
+++ b/framework/Web/UI/TPageStatePersister.php
@@ -16,19 +16,17 @@
  * TPageStatePersister implements a page state persistent method based on
  * form hidden fields.
  *
- * Depending on the {@link TPage::getEnableStateValidation() EnableStateValidation}
- * and {@link TPage::getEnableStateEncryption() EnableStateEncryption},
- * TPageStatePersister may do HMAC validation and encryption to prevent
- * the state data from being tampered or viewed.
- * The private keys and hashing/encryption methods are determined by
- * {@link TApplication::getSecurityManager() SecurityManager}.
+ * Since page state can be very big for complex pages, consider using
+ * alternative persisters, such as {@link TSessionPageStatePersister},
+ * which store page state on the server side and thus reduce the network
+ * traffic for transmitting bulky page state.
  *
  * @author Qiang Xue <qiang.xue@gmail.com>
  * @version $Revision: $  $Date: $
  * @package System.Web.UI
  * @since 3.0
  */
-class TPageStatePersister extends TApplicationComponent implements IPageStatePersister
+class TPageStatePersister extends TComponent implements IPageStatePersister
 {
 	private $_page;
 
@@ -54,15 +52,7 @@ class TPageStatePersister extends TApplicationComponent implements IPageStatePer
 	 */
 	public function save($state)
 	{
-		if($this->_page->getEnableStateValidation())
-			$data=$this->getApplication()->getSecurityManager()->hashData(Prado::serialize($state));
-		else
-			$data=Prado::serialize($state);
-		if($this->_page->getEnableStateEncryption())
-			$data=$this->getApplication()->getSecurityManager()->encrypt($data);
-		if(extension_loaded('zlib'))
-			$data=gzcompress($data);
-		$this->_page->getClientScript()->registerHiddenField(TPage::FIELD_PAGESTATE,base64_encode($data));
+		$this->_page->setClientState(TPageStateFormatter::serialize($this->_page,$state));
 	}
 
 	/**
@@ -72,26 +62,10 @@ class TPageStatePersister extends TApplicationComponent implements IPageStatePer
 	 */
 	public function load()
 	{
-		$str=base64_decode($this->getRequest()->itemAt(TPage::FIELD_PAGESTATE));
-		if($str==='')
-			return null;
-		if(extension_loaded('zlib'))
-			$data=gzuncompress($str);
+		if(($data=TPageStateFormatter::unserialize($this->_page,$this->_page->getRequestClientState()))!==null)
+			return $data;
 		else
-			$data=$str;
-		if($data!==false)
-		{
-			if($this->_page->getEnableStateEncryption())
-				$data=$this->getApplication()->getSecurityManager()->decrypt($data);
-			if($this->_page->getEnableStateValidation())
-			{
-				if(($data=$this->getApplication()->getSecurityManager()->validateData($data))!==false)
-					return Prado::unserialize($data);
-			}
-			else
-				return $data;
-		}
-		throw new THttpException(400,'pagestatepersister_pagestate_corrupted');
+			throw new THttpException(400,'pagestatepersister_pagestate_corrupted');
 	}
 }
 
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