From 996c6d61ffef676247f8b1c9a7ee4b7c69850654 Mon Sep 17 00:00:00 2001
From: xue <>
Date: Tue, 4 Apr 2006 16:50:43 +0000
Subject: Format string in TDataGrid columns can now evaluate an expression

---
 framework/Web/UI/WebControls/TDataGridColumn.php | 26 +++++++++++++++++++++---
 1 file changed, 23 insertions(+), 3 deletions(-)

(limited to 'framework/Web/UI/WebControls/TDataGridColumn.php')

diff --git a/framework/Web/UI/WebControls/TDataGridColumn.php b/framework/Web/UI/WebControls/TDataGridColumn.php
index de9d9d5c..a22fa240 100644
--- a/framework/Web/UI/WebControls/TDataGridColumn.php
+++ b/framework/Web/UI/WebControls/TDataGridColumn.php
@@ -331,17 +331,37 @@ abstract class TDataGridColumn extends TApplicationComponent
 	}
 
 	/**
-	 * Formats the text value according to format string.
-	 * This method invokes the {@link sprintf} to do string formatting.
+	 * Formats the text value according to a format string.
 	 * If the format string is empty, the original value is converted into
 	 * a string and returned.
+	 * If the format string starts with '#', the string is treated as a PHP expression
+	 * within which the token '$$' is translated with the data value to be formated.
+	 * Otherwise, the format string and the data value are passed
+	 * as the first and second parameters in {@link sprintf}.
 	 * @param string format string
 	 * @param mixed the data associated with the cell
 	 * @return string the formatted result
 	 */
 	protected function formatDataValue($formatString,$value)
 	{
-		return $formatString===''?TPropertyValue::ensureString($value):sprintf($formatString,$value);
+		if($formatString==='')
+			return TPropertyValue::ensureString($value);
+		else if($formatString[0]==='#')
+		{
+			$expression=strtr(substr($formatString,1),array('$$'=>'$value'));
+			try
+			{
+				if(eval("\$result=$expression;")===false)
+					throw new Exception('');
+				return $result;
+			}
+			catch(Exception $e)
+			{
+				throw new TInvalidOperationException('datagridcolumn_expression_invalid',get_class($this),$expression,$e->getMessage());
+			}
+		}
+		else
+			return sprintf($formatString,$value);
 	}
 }
 
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