From 8448c3d12f47bfc9fad30fb864d8149c7b6bee36 Mon Sep 17 00:00:00 2001
From: xue <>
Date: Mon, 8 Jan 2007 17:15:19 +0000
Subject: Added TOutputCache.CachingPostBack

---
 framework/Web/UI/WebControls/TOutputCache.php | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/framework/Web/UI/WebControls/TOutputCache.php b/framework/Web/UI/WebControls/TOutputCache.php
index 5e97a5d9..cb46b2f5 100644
--- a/framework/Web/UI/WebControls/TOutputCache.php
+++ b/framework/Web/UI/WebControls/TOutputCache.php
@@ -83,6 +83,7 @@ class TOutputCache extends TControl implements INamingContainer
 	private $_varyByParam='';
 	private $_keyPrefix='';
 	private $_varyBySession=false;
+	private $_cachePostBack=false;
 
 	/**
 	 * Returns a value indicating whether body contents are allowed for this control.
@@ -101,7 +102,7 @@ class TOutputCache extends TControl implements INamingContainer
 		if(!$this->_cacheChecked)
 		{
 			$this->_cacheChecked=true;
-			if(!$this->getPage()->getIsPostBack() && $this->_duration>0)
+			if($this->_duration>0 && ($this->_cachePostBack || !$this->getPage()->getIsPostBack()))
 			{
 				if($this->_cacheModuleID!=='')
 				{
@@ -404,6 +405,26 @@ class TOutputCache extends TControl implements INamingContainer
 		$this->_varyBySession=TPropertyValue::ensureBoolean($value);
 	}
 
+	/**
+	 * @return boolean whether cached output will be used on postback requests. Defaults to false.
+	 */
+	public function getCachingPostBack()
+	{
+		return $this->_cachePostBack;
+	}
+
+	/**
+	 * Sets a value indicating whether cached output will be used on postback requests.
+	 * By default, this is disabled. Be very cautious when enabling it.
+	 * If the cached content including interactive user controls such as
+	 * TTextBox, TDropDownList, your page may fail to render on postbacks.
+	 * @param boolean whether cached output will be used on postback requests.
+	 */
+	public function setCachingPostBack($value)
+	{
+		$this->_cachePostBack=TPropertyValue::ensureBoolean($value);
+	}
+
 	/**
 	 * This event is raised when the output cache is checking cache dependency.
 	 * An event handler may be written to check customized dependency conditions.
-- 
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