Improve fluent interface in charting methods

Classes/PHPExcel/Chart/DataSeries.php

@@ -170,9 +170,11 @@ public function getPlotType() {
 	 * Set Plot Type
 	 *
 	 * @param string $plotType
+     * @return PHPExcel_Chart_DataSeries
 	 */
 	public function setPlotType($plotType = '') {
 		$this->_plotType = $plotType;
+        return $this;
 	}
 
 	/**
@@ -188,9 +190,11 @@ public function getPlotGrouping() {
 	 * Set Plot Grouping Type
 	 *
 	 * @param string $groupingType
+     * @return PHPExcel_Chart_DataSeries
 	 */
 	public function setPlotGrouping($groupingType = null) {
 		$this->_plotGrouping = $groupingType;
+        return $this;
 	}
 
 	/**
@@ -206,9 +210,11 @@ public function getPlotDirection() {
 	 * Set Plot Direction
 	 *
 	 * @param string $plotDirection
+     * @return PHPExcel_Chart_DataSeries
 	 */
 	public function setPlotDirection($plotDirection = null) {
 		$this->_plotDirection = $plotDirection;
+        return $this;
 	}
 
 	/**
@@ -281,9 +287,11 @@ public function getPlotStyle() {
 	 * Set Plot Style
 	 *
 	 * @param string $plotStyle
+     * @return PHPExcel_Chart_DataSeries
 	 */
 	public function setPlotStyle($plotStyle = null) {
 		$this->_plotStyle = $plotStyle;
+        return $this;
 	}
 
 	/**
@@ -332,9 +340,11 @@ public function getSmoothLine() {
 	 * Set Smooth Line
 	 *
 	 * @param boolean $smoothLine
+     * @return PHPExcel_Chart_DataSeries
 	 */
 	public function setSmoothLine($smoothLine = TRUE) {
 		$this->_smoothLine = $smoothLine;
+        return $this;
 	}
 
 	public function refresh(PHPExcel_Worksheet $worksheet) {

Classes/PHPExcel/Chart/Layout.php

@@ -167,9 +167,11 @@ public function getLayoutTarget() {
 	 * Set Layout Target
 	 *
 	 * @param Layout Target $value
+     * @return PHPExcel_Chart_Layout
 	 */
 	public function setLayoutTarget($value) {
 		$this->_layoutTarget = $value;
+        return $this;
 	}
 
 	/**
@@ -185,9 +187,11 @@ public function getXMode() {
 	 * Set X-Mode
 	 *
 	 * @param X-Mode $value
+     * @return PHPExcel_Chart_Layout
 	 */
 	public function setXMode($value) {
 		$this->_xMode = $value;
+        return $this;
 	}
 
 	/**
@@ -203,9 +207,11 @@ public function getYMode() {
 	 * Set Y-Mode
 	 *
 	 * @param Y-Mode $value
+     * @return PHPExcel_Chart_Layout
 	 */
 	public function setYMode($value) {
 		$this->_yMode = $value;
+        return $this;
 	}
 
 	/**
@@ -221,9 +227,11 @@ public function getXPosition() {
 	 * Set X-Position
 	 *
 	 * @param X-Position $value
+     * @return PHPExcel_Chart_Layout
 	 */
 	public function setXPosition($value) {
 		$this->_xPos = $value;
+        return $this;
 	}
 
 	/**
@@ -239,9 +247,11 @@ public function getYPosition() {
 	 * Set Y-Position
 	 *
 	 * @param Y-Position $value
+     * @return PHPExcel_Chart_Layout
 	 */
 	public function setYPosition($value) {
 		$this->_yPos = $value;
+        return $this;
 	}
 
 	/**
@@ -257,9 +267,11 @@ public function getWidth() {
 	 * Set Width
 	 *
 	 * @param Width $value
+     * @return PHPExcel_Chart_Layout
 	 */
 	public function setWidth($value) {
 		$this->_width = $value;
+        return $this;
 	}
 
 	/**
@@ -275,9 +287,11 @@ public function getHeight() {
 	 * Set Height
 	 *
 	 * @param Height $value
+     * @return PHPExcel_Chart_Layout
 	 */
 	public function setHeight($value) {
 		$this->_height = $value;
+        return $this;
 	}
 
 
@@ -295,9 +309,11 @@ public function getShowLegendKey() {
 	 * Specifies that legend keys should be shown in data labels.
 	 *
 	 * @param boolean $value		Show legend key
+     * @return PHPExcel_Chart_Layout
 	 */
 	public function setShowLegendKey($value) {
 		$this->_showLegendKey = $value;
+        return $this;
 	}
 
 	/**
@@ -314,9 +330,11 @@ public function getShowVal() {
 	 * Specifies that the value should be shown in data labels.
 	 *
 	 * @param boolean $value		Show val
+     * @return PHPExcel_Chart_Layout
 	 */
 	public function setShowVal($value) {
 		$this->_showVal = $value;
+        return $this;
 	}
 
 	/**
@@ -333,9 +351,11 @@ public function getShowCatName() {
 	 * Specifies that the category name should be shown in data labels.
 	 *
 	 * @param boolean $value		Show cat name
+     * @return PHPExcel_Chart_Layout
 	 */
 	public function setShowCatName($value) {
 		$this->_showCatName = $value;
+        return $this;
 	}
 
 	/**
@@ -351,10 +371,12 @@ public function getShowSerName() {
 	 * Set show ser name
 	 * Specifies that the series name should be shown in data labels.
 	 *
-	 * @param boolean $value		Show ser name
+	 * @param boolean $value		Show series name
+     * @return PHPExcel_Chart_Layout
 	 */
 	public function setShowSerName($value) {
 		$this->_showSerName = $value;
+        return $this;
 	}
 
 	/**
@@ -371,9 +393,11 @@ public function getShowPercent() {
 	 * Specifies that the percentage should be shown in data labels.
 	 *
 	 * @param boolean $value		Show percentage
+     * @return PHPExcel_Chart_Layout
 	 */
 	public function setShowPercent($value) {
 		$this->_showPercent = $value;
+        return $this;
 	}
 
 	/**
@@ -390,9 +414,11 @@ public function getShowBubbleSize() {
 	 * Specifies that the bubble size should be shown in data labels.
 	 *
 	 * @param boolean $value		Show bubble size
+     * @return PHPExcel_Chart_Layout
 	 */
 	public function setShowBubbleSize($value) {
 		$this->_showBubbleSize = $value;
+        return $this;
 	}
 
 	/**
@@ -409,9 +435,11 @@ public function getShowLeaderLines() {
 	 * Specifies that leader lines should be shown in data labels.
 	 *
 	 * @param boolean $value		Show leader lines
+     * @return PHPExcel_Chart_Layout
 	 */
 	public function setShowLeaderLines($value) {
 		$this->_showLeaderLines = $value;
+        return $this;
 	}
 
 }

Classes/PHPExcel/Chart/PlotArea.php

@@ -111,9 +111,12 @@ public function getPlotGroupByIndex($index) {
 	 * Set Plot Series
 	 *
 	 * @param [PHPExcel_Chart_DataSeries]
+     * @return PHPExcel_Chart_PlotArea
 	 */
 	public function setPlotSeries($plotSeries = array()) {
 		$this->_plotSeries = $plotSeries;
+
+        return $this;
 	}
 
 	public function refresh(PHPExcel_Worksheet $worksheet) {

Classes/PHPExcel/Chart/Title.php

@@ -72,9 +72,12 @@ public function getCaption() {
 	 * Set caption
 	 *
 	 * @param string $caption
+     * @return PHPExcel_Chart_Title
 	 */
 	public function setCaption($caption = null) {
 		$this->_caption = $caption;
+
+        return $this;
 	}
 
 	/**

Examples/runall.php

@@ -92,6 +92,7 @@
 	, '34chartupdate.php'
 	, '35chartrender.php'
 	, '36chartreadwriteHTML.php'
+	, '36chartreadwritePDF.php'
 	, '37page_layout_view.php'
 	, '38cloneWorksheet.php'
 	, '40duplicateStyle.php'