1 files changed, 66 insertions, 0 deletions
diff --git a/framework/TEnumerable.php b/framework/TEnumerable.php
new file mode 100644
index 00000000..8dd42857
--- /dev/null
+++ b/framework/TEnumerable.php
@@ -0,0 +1,66 @@
+<?php
+/**
+ * TComponent, TPropertyValue classes
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ *
+ * Global Events, intra-object events, Class behaviors, expanded behaviors
+ * @author Brad Anderson <javalizard@mac.com>
+ *
+ * @link http://www.pradosoft.com/
+ * @copyright Copyright &copy; 2005-2014 PradoSoft
+ * @license http://www.pradosoft.com/license/
+ * @package System
+ */
+
+
+/**
+ * TEnumerable class.
+ * TEnumerable is the base class for all enumerable types.
+ * To define an enumerable type, extend TEnumberable and define string constants.
+ * Each constant represents an enumerable value.
+ * The constant name must be the same as the constant value.
+ * For example,
+ * <code>
+ * class TTextAlign extends TEnumerable
+ * {
+ *     const Left='Left';
+ *     const Right='Right';
+ * }
+ * </code>
+ * Then, one can use the enumerable values such as TTextAlign::Left and
+ * TTextAlign::Right.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @package System
+ * @since 3.0
+ */
+class TEnumerable implements Iterator
+{
+	private $_enums=array();
+
+	public function __construct() {
+		$reflection=new ReflectionClass($this);
+		$this->_enums=$reflection->getConstants();
+	}
+
+	public function current() {
+		return current($this->_enums);
+	}
+
+	public function key() {
+		return key($this->_enums);
+	}
+
+	public function next() {
+		return next($this->_enums);
+	}
+
+	public function rewind() {
+		reset($this->_enums);
+	}
+
+	public function valid() {
+		return $this->current()!==false;
+	}
+}
+\ No newline at end of file