- Added tests to retrieve and set single data in datasets

- Implemented datasets as far as tested

1 files changed, 23 insertions, 0 deletions

diff --git a/src/charts/pie.php b/src/charts/pie.php
index dc774c4..5ac49e8 100644
--- a/src/charts/pie.php
+++ b/src/charts/pie.php
@@ -25,5 +25,28 @@ class ezcGraphPieChart extends ezcGraphChart
     {
         
     }
+
+    /**
+     * Adds a dataset to the charts data
+     * 
+     * @param string $name Name of dataset
+     * @param mixed $values Values to create dataset with
+     * @throws ezcGraphTooManyDatasetExceptions
+     *          If too many datasets are created
+     * @return ezcGraphDataset
+     */
+    protected function addDataSet( $name, $values )
+    {
+        if ( count( $this->data ) >= 1 &&
+             !isset( $this->data[$name] ) )
+        {
+            throw new ezcGraphTooManyDatasetsExceptions( $name );
+        }
+        else
+        {
+            parent::addDataSet( $name, $values );
+        }
+    }
+
 }
 ?>