diff --git a/Classes/PHPExcel/Chart/DataSeriesValues.php b/Classes/PHPExcel/Chart/DataSeriesValues.php
index 01f0010..df88d62 100644
--- a/Classes/PHPExcel/Chart/DataSeriesValues.php
+++ b/Classes/PHPExcel/Chart/DataSeriesValues.php
@@ -96,7 +96,8 @@ class PHPExcel_Chart_DataSeriesValues
      *
      * @return    string
      */
-    public function getDataType() {
+    public function getDataType()
+    {
         return $this->_dataType;
     }
 
@@ -111,7 +112,8 @@ class PHPExcel_Chart_DataSeriesValues
      *                                        Normally used for chart data values
      * @return    PHPExcel_Chart_DataSeriesValues
      */
-    public function setDataType($dataType = self::DATASERIES_TYPE_NUMBER) {
+    public function setDataType($dataType = self::DATASERIES_TYPE_NUMBER)
+    {
         if (!in_array($dataType, self::$_dataTypeValues)) {
             throw new PHPExcel_Chart_Exception('Invalid datatype for chart data series values');
         }
@@ -125,7 +127,8 @@ class PHPExcel_Chart_DataSeriesValues
      *
      * @return    string
      */
-    public function getDataSource() {
+    public function getDataSource()
+    {
         return $this->_dataSource;
     }
 
@@ -135,7 +138,8 @@ class PHPExcel_Chart_DataSeriesValues
      * @param    string    $dataSource
      * @return    PHPExcel_Chart_DataSeriesValues
      */
-    public function setDataSource($dataSource = null, $refreshDataValues = true) {
+    public function setDataSource($dataSource = null, $refreshDataValues = true)
+    {
         $this->_dataSource = $dataSource;
 
         if ($refreshDataValues) {
@@ -150,7 +154,8 @@ class PHPExcel_Chart_DataSeriesValues
      *
      * @return string
      */
-    public function getPointMarker() {
+    public function getPointMarker()
+    {
         return $this->_marker;
     }
 
@@ -160,7 +165,8 @@ class PHPExcel_Chart_DataSeriesValues
      * @param    string    $marker
      * @return    PHPExcel_Chart_DataSeriesValues
      */
-    public function setPointMarker($marker = null) {
+    public function setPointMarker($marker = null)
+    {
         $this->_marker = $marker;
 
         return $this;
@@ -171,7 +177,8 @@ class PHPExcel_Chart_DataSeriesValues
      *
      * @return    string
      */
-    public function getFormatCode() {
+    public function getFormatCode()
+    {
         return $this->_formatCode;
     }
 
@@ -181,7 +188,8 @@ class PHPExcel_Chart_DataSeriesValues
      * @param    string    $formatCode
      * @return    PHPExcel_Chart_DataSeriesValues
      */
-    public function setFormatCode($formatCode = null) {
+    public function setFormatCode($formatCode = null)
+    {
         $this->_formatCode = $formatCode;
 
         return $this;
@@ -192,7 +200,8 @@ class PHPExcel_Chart_DataSeriesValues
      *
      * @return    integer
      */
-    public function getPointCount() {
+    public function getPointCount()
+    {
         return $this->_pointCount;
     }
 
@@ -201,7 +210,8 @@ class PHPExcel_Chart_DataSeriesValues
      *
      * @return    boolean
      */
-    public function isMultiLevelSeries() {
+    public function isMultiLevelSeries()
+    {
         if (count($this->_dataValues) > 0) {
             return is_array($this->_dataValues[0]);
         }
@@ -213,7 +223,8 @@ class PHPExcel_Chart_DataSeriesValues
      *
      * @return    boolean
      */
-    public function multiLevelCount() {
+    public function multiLevelCount()
+    {
         $levelCount = 0;
         foreach ($this->_dataValues as $dataValueSet) {
             $levelCount = max($levelCount,count($dataValueSet));
@@ -226,7 +237,8 @@ class PHPExcel_Chart_DataSeriesValues
      *
      * @return    array of mixed
      */
-    public function getDataValues() {
+    public function getDataValues()
+    {
         return $this->_dataValues;
     }
 
@@ -235,7 +247,8 @@ class PHPExcel_Chart_DataSeriesValues
      *
      * @return    mixed
      */
-    public function getDataValue() {
+    public function getDataValue()
+    {
         $count = count($this->_dataValues);
         if ($count == 0) {
             return null;
@@ -254,7 +267,8 @@ class PHPExcel_Chart_DataSeriesValues
      *                    FALSE - don't change the value of _dataSource
      * @return    PHPExcel_Chart_DataSeriesValues
      */
-    public function setDataValues($dataValues = array(), $refreshDataSource = TRUE) {
+    public function setDataValues($dataValues = array(), $refreshDataSource = true)
+    {
         $this->_dataValues = PHPExcel_Calculation_Functions::flattenArray($dataValues);
         $this->_pointCount = count($dataValues);
 
@@ -265,17 +279,19 @@ class PHPExcel_Chart_DataSeriesValues
         return $this;
     }
 
-    private function _stripNulls($var) {
-        return $var !== NULL;
+    private function _stripNulls($var)
+    {
+        return $var !== null;
     }
 
-    public function refresh(PHPExcel_Worksheet $worksheet, $flatten = TRUE) {
-        if ($this->_dataSource !== NULL) {
+    public function refresh(PHPExcel_Worksheet $worksheet, $flatten = true)
+    {
+        if ($this->_dataSource !== null) {
             $calcEngine = PHPExcel_Calculation::getInstance($worksheet->getParent());
             $newDataValues = PHPExcel_Calculation::_unwrapResult(
                 $calcEngine->_calculateFormulaValue(
                     '='.$this->_dataSource,
-                    NULL,
+                    null,
                     $worksheet->getCell('A1')
                 )
             );
@@ -293,7 +309,7 @@ class PHPExcel_Chart_DataSeriesValues
                     list(, $cellRange) = $cellRange;
                 }
 
-                $dimensions = PHPExcel_Cell::rangeDimension(str_replace('$','', $cellRange));
+                $dimensions = PHPExcel_Cell::rangeDimension(str_replace('$', '', $cellRange));
                 if (($dimensions[0] == 1) || ($dimensions[1] == 1)) {
                     $this->_dataValues = PHPExcel_Calculation_Functions::flattenArray($newDataValues);
                 } else {
@@ -313,7 +329,5 @@ class PHPExcel_Chart_DataSeriesValues
             }
             $this->_pointCount = count($this->_dataValues);
         }
-
     }
-
 }
diff --git a/Classes/PHPExcel/Chart/GridLines.php b/Classes/PHPExcel/Chart/GridLines.php
index 72cb8e4..69d8ed5 100644
--- a/Classes/PHPExcel/Chart/GridLines.php
+++ b/Classes/PHPExcel/Chart/GridLines.php
@@ -7,8 +7,8 @@
  * Time: 2:36 PM
  */
 
-class PHPExcel_Chart_GridLines extends
-  PHPExcel_Chart_Properties {
+class PHPExcel_Chart_GridLines extends PHPExcel_Chart_Properties
+{
 
   /**
    * Properties of Class:
@@ -20,333 +20,351 @@ class PHPExcel_Chart_GridLines extends
    *
    */
 
-  private
-      $_object_state = FALSE,
-      $_line_properties = array(
-          'color' => array(
-              'type' => self::EXCEL_COLOR_TYPE_STANDARD,
-              'value' => NULL,
-              'alpha' => 0
-          ),
-          'style' => array(
-              'width' => '9525',
-              'compound' => self::LINE_STYLE_COMPOUND_SIMPLE,
-              'dash' => self::LINE_STYLE_DASH_SOLID,
-              'cap' => self::LINE_STYLE_CAP_FLAT,
-              'join' => self::LINE_STYLE_JOIN_BEVEL,
-              'arrow' => array(
-                  'head' => array(
-                      'type' => self::LINE_STYLE_ARROW_TYPE_NOARROW,
-                      'size' => self::LINE_STYLE_ARROW_SIZE_5
-                  ),
-                  'end' => array(
-                      'type' => self::LINE_STYLE_ARROW_TYPE_NOARROW,
-                      'size' => self::LINE_STYLE_ARROW_SIZE_8
-                  ),
-              )
-          )
-      ),
-      $_shadow_properties = array(
-          'presets' => self::SHADOW_PRESETS_NOSHADOW,
-          'effect' => NULL,
-          'color' => array(
-              'type' => self::EXCEL_COLOR_TYPE_STANDARD,
-              'value' => 'black',
-              'alpha' => 85,
-          ),
-          'size' => array(
-              'sx' => NULL,
-              'sy' => NULL,
-              'kx' => NULL
-          ),
-          'blur' => NULL,
-          'direction' => NULL,
-          'distance' => NULL,
-          'algn' => NULL,
-          'rotWithShape' => NULL
-      ),
-      $_glow_properties = array(
-          'size' => NULL,
-          'color' => array(
-              'type' => self::EXCEL_COLOR_TYPE_STANDARD,
-              'value' => 'black',
-              'alpha' => 40
-          )
-      ),
-      $_soft_edges = array(
-          'size' => NULL
-      );
+    private $_object_state = false;
 
-  /**
-   * Get Object State
-   *
-   * @return bool
-   */
+    private $_line_properties = array(
+        'color' => array(
+            'type' => self::EXCEL_COLOR_TYPE_STANDARD,
+            'value' => null,
+            'alpha' => 0
+        ),
+        'style' => array(
+            'width' => '9525',
+            'compound' => self::LINE_STYLE_COMPOUND_SIMPLE,
+            'dash' => self::LINE_STYLE_DASH_SOLID,
+            'cap' => self::LINE_STYLE_CAP_FLAT,
+            'join' => self::LINE_STYLE_JOIN_BEVEL,
+            'arrow' => array(
+                'head' => array(
+                    'type' => self::LINE_STYLE_ARROW_TYPE_NOARROW,
+                    'size' => self::LINE_STYLE_ARROW_SIZE_5
+                ),
+                'end' => array(
+                    'type' => self::LINE_STYLE_ARROW_TYPE_NOARROW,
+                    'size' => self::LINE_STYLE_ARROW_SIZE_8
+                ),
+            )
+        )
+    );
 
-  public function getObjectState() {
-    return $this->_object_state;
-  }
+    private $_shadow_properties = array(
+        'presets' => self::SHADOW_PRESETS_NOSHADOW,
+        'effect' => null,
+        'color' => array(
+            'type' => self::EXCEL_COLOR_TYPE_STANDARD,
+            'value' => 'black',
+            'alpha' => 85,
+        ),
+        'size' => array(
+            'sx' => null,
+            'sy' => null,
+            'kx' => null
+        ),
+        'blur' => null,
+        'direction' => null,
+        'distance' => null,
+        'algn' => null,
+        'rotWithShape' => null
+    );
 
-  /**
-   * Change Object State to True
-   *
-   * @return PHPExcel_Chart_GridLines
-   */
+    private $_glow_properties = array(
+        'size' => null,
+        'color' => array(
+            'type' => self::EXCEL_COLOR_TYPE_STANDARD,
+            'value' => 'black',
+            'alpha' => 40
+        )
+    );
 
-  private function _activateObject() {
-    $this->_object_state = TRUE;
+    private $_soft_edges = array(
+        'size' => null
+     );
 
-    return $this;
-  }
+    /**
+     * Get Object State
+     *
+     * @return bool
+     */
 
-  /**
-   * Set Line Color Properties
-   *
-   * @param string $value
-   * @param int $alpha
-   * @param string $type
-   */
-
-  public function setLineColorProperties($value, $alpha = 0, $type = self::EXCEL_COLOR_TYPE_STANDARD) {
-    $this
-        ->_activateObject()
-        ->_line_properties['color'] = $this->setColorProperties(
-        $value,
-        $alpha,
-        $type);
-  }
-
-  /**
-   * Set Line Color Properties
-   *
-   * @param float $line_width
-   * @param string $compound_type
-   * @param string $dash_type
-   * @param string $cap_type
-   * @param string $join_type
-   * @param string $head_arrow_type
-   * @param string $head_arrow_size
-   * @param string $end_arrow_type
-   * @param string $end_arrow_size
-   */
-
-  public function setLineStyleProperties($line_width = NULL, $compound_type = NULL, $dash_type = NULL, $cap_type = NULL, $join_type = NULL, $head_arrow_type = NULL, $head_arrow_size = NULL, $end_arrow_type = NULL, $end_arrow_size = NULL) {
-    $this->_activateObject();
-    (!is_null($line_width))
-        ? $this->_line_properties['style']['width'] = $this->getExcelPointsWidth((float) $line_width)
-        : NULL;
-    (!is_null($compound_type))
-        ? $this->_line_properties['style']['compound'] = (string) $compound_type
-        : NULL;
-    (!is_null($dash_type))
-        ? $this->_line_properties['style']['dash'] = (string) $dash_type
-        : NULL;
-    (!is_null($cap_type))
-        ? $this->_line_properties['style']['cap'] = (string) $cap_type
-        : NULL;
-    (!is_null($join_type))
-        ? $this->_line_properties['style']['join'] = (string) $join_type
-        : NULL;
-    (!is_null($head_arrow_type))
-        ? $this->_line_properties['style']['arrow']['head']['type'] = (string) $head_arrow_type
-        : NULL;
-    (!is_null($head_arrow_size))
-        ? $this->_line_properties['style']['arrow']['head']['size'] = (string) $head_arrow_size
-        : NULL;
-    (!is_null($end_arrow_type))
-        ? $this->_line_properties['style']['arrow']['end']['type'] = (string) $end_arrow_type
-        : NULL;
-    (!is_null($end_arrow_size))
-        ? $this->_line_properties['style']['arrow']['end']['size'] = (string) $end_arrow_size
-        : NULL;
-  }
-
-  /**
-   * Get Line Color Property
-   *
-   * @param string $parameter
-   *
-   * @return string
-   */
-
-  public function getLineColorProperty($parameter) {
-    return $this->_line_properties['color'][$parameter];
-  }
-
-  /**
-   * Get Line Style Property
-   *
-   * @param  array|string $elements
-   *
-   * @return string
-   */
-
-  public function getLineStyleProperty($elements) {
-    return $this->getArrayElementsValue($this->_line_properties['style'], $elements);
-  }
-
-  /**
-   * Set Glow Properties
-   *
-   * @param  float $size
-   * @param  string $color_value
-   * @param  int $color_alpha
-   * @param  string $color_type
-   *
-   */
-
-  public function setGlowProperties($size, $color_value = NULL, $color_alpha = NULL, $color_type = NULL) {
-    $this
-        ->_activateObject()
-        ->_setGlowSize($size)
-        ->_setGlowColor($color_value, $color_alpha, $color_type);
-  }
-
-  /**
-   * Get Glow Color Property
-   *
-   * @param string $property
-   *
-   * @return string
-   */
-
-  public function getGlowColor($property) {
-    return $this->_glow_properties['color'][$property];
-  }
-
-  /**
-   * Get Glow Size
-   *
-   * @return string
-   */
-
-  public function getGlowSize() {
-    return $this->_glow_properties['size'];
-  }
-
-  /**
-   * Set Glow Size
-   *
-   * @param float $size
-   *
-   * @return PHPExcel_Chart_GridLines
-   */
-
-  private function _setGlowSize($size) {
-    $this->_glow_properties['size'] = $this->getExcelPointsWidth((float) $size);
-
-    return $this;
-  }
-
-  /**
-   * Set Glow Color
-   *
-   * @param string $color
-   * @param int $alpha
-   * @param string $type
-   *
-   * @return PHPExcel_Chart_GridLines
-   */
-
-  private function _setGlowColor($color, $alpha, $type) {
-    if (!is_null($color)) {
-      $this->_glow_properties['color']['value'] = (string) $color;
-    }
-    if (!is_null($alpha)) {
-      $this->_glow_properties['color']['alpha'] = $this->getTrueAlpha((int) $alpha);
-    }
-    if (!is_null($type)) {
-      $this->_glow_properties['color']['type'] = (string) $type;
+    public function getObjectState()
+    {
+        return $this->_object_state;
     }
 
-    return $this;
-  }
+    /**
+     * Change Object State to True
+     *
+     * @return PHPExcel_Chart_GridLines
+     */
 
-  /**
-   * Get Line Style Arrow Parameters
-   *
-   * @param string $arrow_selector
-   * @param string $property_selector
-   *
-   * @return string
-   */
+    private function _activateObject()
+    {
+        $this->_object_state = true;
 
-  public function getLineStyleArrowParameters($arrow_selector, $property_selector) {
-    return $this->getLineStyleArrowSize($this->_line_properties['style']['arrow'][$arrow_selector]['size'], $property_selector);
-  }
+        return $this;
+    }
 
-  /**
-   * Set Shadow Properties
-   *
-   * @param int $sh_presets
-   * @param string $sh_color_value
-   * @param string $sh_color_type
-   * @param int $sh_color_alpha
-   * @param string $sh_blur
-   * @param int $sh_angle
-   * @param float $sh_distance
-   *
-   */
+    /**
+     * Set Line Color Properties
+     *
+     * @param string $value
+     * @param int $alpha
+     * @param string $type
+     */
 
-  public function setShadowProperties($sh_presets, $sh_color_value = NULL, $sh_color_type = NULL, $sh_color_alpha = NULL, $sh_blur = NULL, $sh_angle = NULL, $sh_distance = NULL) {
-    $this
-        ->_activateObject()
-        ->_setShadowPresetsProperties((int) $sh_presets)
-        ->_setShadowColor(
-            is_null($sh_color_value) ? $this->_shadow_properties['color']['value'] : $sh_color_value
-            , is_null($sh_color_alpha) ? (int) $this->_shadow_properties['color']['alpha']
-                : $this->getTrueAlpha($sh_color_alpha)
-            , is_null($sh_color_type) ? $this->_shadow_properties['color']['type'] : $sh_color_type)
-        ->_setShadowBlur($sh_blur)
-        ->_setShadowAngle($sh_angle)
-        ->_setShadowDistance($sh_distance);
-  }
+    public function setLineColorProperties($value, $alpha = 0, $type = self::EXCEL_COLOR_TYPE_STANDARD)
+    {
+        $this
+                ->_activateObject()
+                ->_line_properties['color'] = $this->setColorProperties(
+                $value,
+                $alpha,
+                $type);
+    }
 
-  /**
-   * Set Shadow Presets Properties
-   *
-   * @param int $shadow_presets
-   *
-   * @return PHPExcel_Chart_GridLines
-   */
+    /**
+     * Set Line Color Properties
+     *
+     * @param float $line_width
+     * @param string $compound_type
+     * @param string $dash_type
+     * @param string $cap_type
+     * @param string $join_type
+     * @param string $head_arrow_type
+     * @param string $head_arrow_size
+     * @param string $end_arrow_type
+     * @param string $end_arrow_size
+     */
 
-  private function _setShadowPresetsProperties($shadow_presets) {
-    $this->_shadow_properties['presets'] = $shadow_presets;
-    $this->_setShadowProperiesMapValues($this->getShadowPresetsMap($shadow_presets));
+    public function setLineStyleProperties($line_width = null, $compound_type = null, $dash_type = null, $cap_type = null, $join_type = null, $head_arrow_type = null, $head_arrow_size = null, $end_arrow_type = null, $end_arrow_size = null)
+    {
+        $this->_activateObject();
+        (!is_null($line_width))
+                ? $this->_line_properties['style']['width'] = $this->getExcelPointsWidth((float) $line_width)
+                : null;
+        (!is_null($compound_type))
+                ? $this->_line_properties['style']['compound'] = (string) $compound_type
+                : null;
+        (!is_null($dash_type))
+                ? $this->_line_properties['style']['dash'] = (string) $dash_type
+                : null;
+        (!is_null($cap_type))
+                ? $this->_line_properties['style']['cap'] = (string) $cap_type
+                : null;
+        (!is_null($join_type))
+                ? $this->_line_properties['style']['join'] = (string) $join_type
+                : null;
+        (!is_null($head_arrow_type))
+                ? $this->_line_properties['style']['arrow']['head']['type'] = (string) $head_arrow_type
+                : null;
+        (!is_null($head_arrow_size))
+                ? $this->_line_properties['style']['arrow']['head']['size'] = (string) $head_arrow_size
+                : null;
+        (!is_null($end_arrow_type))
+                ? $this->_line_properties['style']['arrow']['end']['type'] = (string) $end_arrow_type
+                : null;
+        (!is_null($end_arrow_size))
+                ? $this->_line_properties['style']['arrow']['end']['size'] = (string) $end_arrow_size
+                : null;
+    }
 
-    return $this;
-  }
+    /**
+     * Get Line Color Property
+     *
+     * @param string $parameter
+     *
+     * @return string
+     */
 
-  /**
-   * Set Shadow Properties Values
-   *
-   * @param array $properties_map
-   * @param * $reference
-   *
-   * @return PHPExcel_Chart_GridLines
-   */
+    public function getLineColorProperty($parameter)
+    {
+        return $this->_line_properties['color'][$parameter];
+    }
 
-  private function _setShadowProperiesMapValues(array $properties_map, &$reference = NULL) {
-    $base_reference = $reference;
-    foreach ($properties_map as $property_key => $property_val) {
-      if (is_array($property_val)) {
-        if ($reference === NULL) {
-          $reference = & $this->_shadow_properties[$property_key];
-        } else {
-          $reference = & $reference[$property_key];
+    /**
+     * Get Line Style Property
+     *
+     * @param    array|string $elements
+     *
+     * @return string
+     */
+
+    public function getLineStyleProperty($elements)
+    {
+        return $this->getArrayElementsValue($this->_line_properties['style'], $elements);
+    }
+
+    /**
+     * Set Glow Properties
+     *
+     * @param    float $size
+     * @param    string $color_value
+     * @param    int $color_alpha
+     * @param    string $color_type
+     *
+     */
+
+    public function setGlowProperties($size, $color_value = null, $color_alpha = null, $color_type = null)
+    {
+        $this
+                ->_activateObject()
+                ->_setGlowSize($size)
+                ->_setGlowColor($color_value, $color_alpha, $color_type);
+    }
+
+    /**
+     * Get Glow Color Property
+     *
+     * @param string $property
+     *
+     * @return string
+     */
+
+    public function getGlowColor($property)
+    {
+        return $this->_glow_properties['color'][$property];
+    }
+
+    /**
+     * Get Glow Size
+     *
+     * @return string
+     */
+
+    public function getGlowSize()
+    {
+        return $this->_glow_properties['size'];
+    }
+
+    /**
+     * Set Glow Size
+     *
+     * @param float $size
+     *
+     * @return PHPExcel_Chart_GridLines
+     */
+
+    private function _setGlowSize($size)
+    {
+        $this->_glow_properties['size'] = $this->getExcelPointsWidth((float) $size);
+
+        return $this;
+    }
+
+    /**
+     * Set Glow Color
+     *
+     * @param string $color
+     * @param int $alpha
+     * @param string $type
+     *
+     * @return PHPExcel_Chart_GridLines
+     */
+
+    private function _setGlowColor($color, $alpha, $type)
+    {
+        if (!is_null($color)) {
+            $this->_glow_properties['color']['value'] = (string) $color;
         }
-        $this->_setShadowProperiesMapValues($property_val, $reference);
-      } else {
-        if ($base_reference === NULL) {
-          $this->_shadow_properties[$property_key] = $property_val;
-        } else {
-          $reference[$property_key] = $property_val;
+        if (!is_null($alpha)) {
+            $this->_glow_properties['color']['alpha'] = $this->getTrueAlpha((int) $alpha);
         }
-      }
+        if (!is_null($type)) {
+            $this->_glow_properties['color']['type'] = (string) $type;
+        }
+
+        return $this;
     }
 
-    return $this;
-  }
+    /**
+     * Get Line Style Arrow Parameters
+     *
+     * @param string $arrow_selector
+     * @param string $property_selector
+     *
+     * @return string
+     */
+
+    public function getLineStyleArrowParameters($arrow_selector, $property_selector)
+    {
+        return $this->getLineStyleArrowSize($this->_line_properties['style']['arrow'][$arrow_selector]['size'], $property_selector);
+    }
+
+    /**
+     * Set Shadow Properties
+     *
+     * @param int $sh_presets
+     * @param string $sh_color_value
+     * @param string $sh_color_type
+     * @param int $sh_color_alpha
+     * @param string $sh_blur
+     * @param int $sh_angle
+     * @param float $sh_distance
+     *
+     */
+
+    public function setShadowProperties($sh_presets, $sh_color_value = null, $sh_color_type = null, $sh_color_alpha = null, $sh_blur = null, $sh_angle = null, $sh_distance = null)
+    {
+        $this
+                ->_activateObject()
+                ->_setShadowPresetsProperties((int) $sh_presets)
+                ->_setShadowColor(
+                        is_null($sh_color_value) ? $this->_shadow_properties['color']['value'] : $sh_color_value
+                        , is_null($sh_color_alpha) ? (int) $this->_shadow_properties['color']['alpha']
+                                : $this->getTrueAlpha($sh_color_alpha)
+                        , is_null($sh_color_type) ? $this->_shadow_properties['color']['type'] : $sh_color_type)
+                ->_setShadowBlur($sh_blur)
+                ->_setShadowAngle($sh_angle)
+                ->_setShadowDistance($sh_distance);
+    }
+
+    /**
+     * Set Shadow Presets Properties
+     *
+     * @param int $shadow_presets
+     *
+     * @return PHPExcel_Chart_GridLines
+     */
+
+    private function _setShadowPresetsProperties($shadow_presets)
+    {
+        $this->_shadow_properties['presets'] = $shadow_presets;
+        $this->_setShadowProperiesMapValues($this->getShadowPresetsMap($shadow_presets));
+
+        return $this;
+    }
+
+    /**
+     * Set Shadow Properties Values
+     *
+     * @param array $properties_map
+     * @param * $reference
+     *
+     * @return PHPExcel_Chart_GridLines
+     */
+
+    private function _setShadowProperiesMapValues(array $properties_map, &$reference = null)
+    {
+        $base_reference = $reference;
+        foreach ($properties_map as $property_key => $property_val) {
+            if (is_array($property_val)) {
+                if ($reference === null) {
+                    $reference = & $this->_shadow_properties[$property_key];
+                } else {
+                    $reference = & $reference[$property_key];
+                }
+                $this->_setShadowProperiesMapValues($property_val, $reference);
+            } else {
+                if ($base_reference === null) {
+                    $this->_shadow_properties[$property_key] = $property_val;
+                } else {
+                    $reference[$property_key] = $property_val;
+                }
+            }
+        }
+
+        return $this;
+    }
 
     /**
      * Set Shadow Color
@@ -356,7 +374,8 @@ class PHPExcel_Chart_GridLines extends
      * @param string $type
      * @return PHPExcel_Chart_GridLines
      */
-    private function _setShadowColor($color, $alpha, $type) {
+    private function _setShadowColor($color, $alpha, $type)
+    {
         if (!is_null($color)) {
             $this->_shadow_properties['color']['value'] = (string) $color;
         }
@@ -377,8 +396,9 @@ class PHPExcel_Chart_GridLines extends
      *
      * @return PHPExcel_Chart_GridLines
      */
-    private function _setShadowBlur($blur) {
-        if ($blur !== NULL) {
+    private function _setShadowBlur($blur)
+    {
+        if ($blur !== null) {
             $this->_shadow_properties['blur'] = (string) $this->getExcelPointsWidth($blur);
         }
 
@@ -392,8 +412,9 @@ class PHPExcel_Chart_GridLines extends
      * @return PHPExcel_Chart_GridLines
      */
 
-    private function _setShadowAngle($angle) {
-        if ($angle !== NULL) {
+    private function _setShadowAngle($angle)
+    {
+        if ($angle !== null) {
             $this->_shadow_properties['direction'] = (string) $this->getExcelPointsAngle($angle);
         }
 
@@ -406,8 +427,9 @@ class PHPExcel_Chart_GridLines extends
      * @param float $distance
      * @return PHPExcel_Chart_GridLines
      */
-    private function _setShadowDistance($distance) {
-        if ($distance !== NULL) {
+    private function _setShadowDistance($distance)
+    {
+        if ($distance !== null) {
             $this->_shadow_properties['distance'] = (string) $this->getExcelPointsWidth($distance);
         }
 
@@ -421,7 +443,8 @@ class PHPExcel_Chart_GridLines extends
      * @param array $elements
      * @return string
      */
-    public function getShadowProperty($elements) {
+    public function getShadowProperty($elements)
+    {
         return $this->getArrayElementsValue($this->_shadow_properties, $elements);
     }
 
@@ -430,7 +453,8 @@ class PHPExcel_Chart_GridLines extends
      *
      * @param float $size
      */
-    public function setSoftEdgesSize($size) {
+    public function setSoftEdgesSize($size)
+    {
         if (!is_null($size)) {
             $this->_activateObject();
             $_soft_edges['size'] = (string) $this->getExcelPointsWidth($size);
@@ -442,7 +466,8 @@ class PHPExcel_Chart_GridLines extends
      *
      * @return string
      */
-    public function getSoftEdgesSize() {
+    public function getSoftEdgesSize()
+    {
         return $this->_soft_edges['size'];
     }
 }
\ No newline at end of file