* Prado 3.3.0

1 files changed, 69 insertions, 0 deletions

diff --git a/lib/prado/framework/Web/UI/TPageStatePersister.php b/lib/prado/framework/Web/UI/TPageStatePersister.php
new file mode 100644
index 0000000..161316b
--- /dev/null
+++ b/lib/prado/framework/Web/UI/TPageStatePersister.php
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+<?php
+/**
+ * TPageStatePersister class file
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @link https://github.com/pradosoft/prado
+ * @copyright Copyright &copy; 2005-2015 The PRADO Group
+ * @license https://github.com/pradosoft/prado/blob/master/COPYRIGHT
+ * @package System.Web.UI
+ */
+
+/**
+ * TPageStatePersister class
+ *
+ * TPageStatePersister implements a page state persistent method based on
+ * form hidden fields.
+ *
+ * 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>
+ * @package System.Web.UI
+ * @since 3.0
+ */
+class TPageStatePersister extends TComponent implements IPageStatePersister
+{
+	private $_page;
+
+	/**
+	 * @return TPage the page that this persister works for
+	 */
+	public function getPage()
+	{
+		return $this->_page;
+	}
+
+	/**
+	 * @param TPage the page that this persister works for
+	 */
+	public function setPage(TPage $page)
+	{
+		$this->_page=$page;
+	}
+
+	/**
+	 * Saves state in hidden fields.
+	 * @param mixed state to be stored
+	 */
+	public function save($state)
+	{
+		$this->_page->setClientState(TPageStateFormatter::serialize($this->_page,$state));
+	}
+
+	/**
+	 * Loads page state from hidden fields.
+	 * @return mixed the restored state
+	 * @throws THttpException if page state is corrupted
+	 */
+	public function load()
+	{
+		if(($data=TPageStateFormatter::unserialize($this->_page,$this->_page->getRequestClientState()))!==null)
+			return $data;
+		else
+			throw new THttpException(400,'pagestatepersister_pagestate_corrupted');
+	}
+}
+