1 files changed, 60 insertions, 0 deletions
diff --git a/lib/prado/framework/Web/UI/WebControls/TExpression.php b/lib/prado/framework/Web/UI/WebControls/TExpression.php
new file mode 100644
index 0000000..57bbb59
--- /dev/null
+++ b/lib/prado/framework/Web/UI/WebControls/TExpression.php
@@ -0,0 +1,60 @@
+<?php
+/**
+ * TExpression 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.WebControls
+ */
+
+/**
+ * TExpression class
+ *
+ * TExpression evaluates a PHP expression and renders the result.
+ * The expression is evaluated during the rendering stage. The expression being
+ * evaluated can be set via the property {@link setExpression Expression}.
+ * The context of the expression evaluated is the TExpression object itself.
+ *
+ * Note, since TExpression allows evaluation of arbitrary PHP expression,
+ * make sure {@link setExpression Expression} does not come directly from user input.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @package System.Web.UI.WebControls
+ * @since 3.0
+ */
+class TExpression extends TControl
+{
+	/**
+	 * @var string PHP expression to be evaluated
+	 */
+	private $_e='';
+
+	/**
+	 * @return string the expression to be evaluated
+	 */
+	public function getExpression()
+	{
+		return $this->_e;
+	}
+
+	/**
+	 * @param string the expression to be evaluated
+	 */
+	public function setExpression($value)
+	{
+		$this->_e=$value;
+	}
+
+	/**
+	 * Renders the evaluation result of the expression.
+	 * @param THtmlWriter the writer used for the rendering purpose
+	 */
+	public function render($writer)
+	{
+		if($this->_e!=='')
+			$writer->write($this->evaluateExpression($this->_e));
+	}
+}
+