1 files changed, 97 insertions, 0 deletions
diff --git a/framework/Collections/TPagedListIterator.php b/framework/Collections/TPagedListIterator.php
new file mode 100644
index 00000000..8a2166cb
--- /dev/null
+++ b/framework/Collections/TPagedListIterator.php
@@ -0,0 +1,97 @@
+<?php
+/**
+ * TPagedDataSource, TPagedListIterator, TPagedMapIterator classes
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @link http://www.pradosoft.com/
+ * @copyright Copyright &copy; 2005-2014 PradoSoft
+ * @license http://www.pradosoft.com/license/
+ * @package System.Collections
+ */
+
+
+
+/**
+ * TPagedListIterator class
+ *
+ * TPagedListIterator implements Iterator interface.
+ *
+ * TPagedListIterator is used by {@link TPagedDataSource}. It allows TPagedDataSource
+ * to return a new iterator for traversing the items in a {@link TList} object.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @package System.Collections
+ * @since 3.0
+ */
+class TPagedListIterator implements Iterator
+{
+	private $_list;
+	private $_startIndex;
+	private $_count;
+	private $_index;
+
+	/**
+	 * Constructor.
+	 * @param TList the data to be iterated through
+	 * @param integer start index
+	 * @param integer number of items to be iterated through
+	 */
+	public function __construct(TList $list,$startIndex,$count)
+	{
+		$this->_list=$list;
+		$this->_index=0;
+		$this->_startIndex=$startIndex;
+		if($startIndex+$count>$list->getCount())
+			$this->_count=$list->getCount()-$startIndex;
+		else
+			$this->_count=$count;
+	}
+
+	/**
+	 * Rewinds internal array pointer.
+	 * This method is required by the interface Iterator.
+	 */
+	public function rewind()
+	{
+		$this->_index=0;
+	}
+
+	/**
+	 * Returns the key of the current array item.
+	 * This method is required by the interface Iterator.
+	 * @return integer the key of the current array item
+	 */
+	public function key()
+	{
+		return $this->_index;
+	}
+
+	/**
+	 * Returns the current array item.
+	 * This method is required by the interface Iterator.
+	 * @return mixed the current array item
+	 */
+	public function current()
+	{
+		return $this->_list->itemAt($this->_startIndex+$this->_index);
+	}
+
+	/**
+	 * Moves the internal pointer to the next array item.
+	 * This method is required by the interface Iterator.
+	 */
+	public function next()
+	{
+		$this->_index++;
+	}
+
+	/**
+	 * Returns whether there is an item at current position.
+	 * This method is required by the interface Iterator.
+	 * @return boolean
+	 */
+	public function valid()
+	{
+		return $this->_index<$this->_count;
+	}
+}
+\ No newline at end of file