From 7369988330bf8796d9cf2564756baf4eb46871ba Mon Sep 17 00:00:00 2001
From: Fabio Bas <ctrlaltca@gmail.com>
Date: Tue, 20 Jan 2015 22:34:11 +0100
Subject: one class per file: framework/Web/UI/ActiveControls

---
 framework/Web/UI/ActiveControls/TViewStateDiff.php | 51 ++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 framework/Web/UI/ActiveControls/TViewStateDiff.php

(limited to 'framework/Web/UI/ActiveControls/TViewStateDiff.php')

diff --git a/framework/Web/UI/ActiveControls/TViewStateDiff.php b/framework/Web/UI/ActiveControls/TViewStateDiff.php
new file mode 100644
index 00000000..a5b229eb
--- /dev/null
+++ b/framework/Web/UI/ActiveControls/TViewStateDiff.php
@@ -0,0 +1,51 @@
+<?php
+/**
+ * TActiveControlAdapter and TCallbackPageStateTracker class file.
+ *
+ * @author Wei Zhuo <weizhuo[at]gamil[dot]com>
+ * @link http://www.pradosoft.com/
+ * @copyright Copyright &copy; 2005-2014 PradoSoft
+ * @license http://www.pradosoft.com/license/
+ * @package System.Web.UI.ActiveControls
+ */
+
+/**
+ * Calculates the viewstate changes during the request.
+ *
+ * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
+ * @package System.Web.UI.ActiveControls
+ * @since 3.1
+ */
+abstract class TViewStateDiff
+{
+	/**
+	 * @var mixed updated viewstate
+	 */
+	protected $_new;
+	/**
+	 * @var mixed viewstate value at the begining of the request.
+	 */
+	protected $_old;
+	/**
+	 * @var object null value.
+	 */
+	protected $_null;
+
+	/**
+	 * Constructor.
+	 * @param mixed updated viewstate value.
+	 * @param mixed viewstate value at the begining of the request.
+	 * @param object representing the null value.
+	 */
+	public function __construct($new, $old, $null)
+	{
+		$this->_new = $new;
+		$this->_old = $old;
+		$this->_null = $null;
+	}
+
+	/**
+	 * @return mixed view state changes, nullObject if no difference.
+	 */
+	public abstract function getDifference();
+}
\ No newline at end of file
-- 
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