From 350cdc2d4255e24919e13e192dfb3f610271a7aa Mon Sep 17 00:00:00 2001
From: Daniel Cothran <daniel@andile.co>
Date: Mon, 11 Dec 2017 15:17:32 -0500
Subject: [PATCH] Issue #2879533 by lbaran: Improve Charts code documentation

---
 charts.module                                 |  16 +-
 .../src/Controller/ChartsApiExample.php       |   2 +-
 .../charts_c3/src/Charts/C3ChartsRender.php   |   6 +-
 .../src/Plugin/chart/CThreeCharts.php         | 175 ++---
 .../charts_c3/src/Settings/CThree/CThree.php  |  37 +
 .../src/Settings/CThree/ChartAxis.php         |  13 +
 .../src/Settings/CThree/ChartColor.php        |  13 +
 .../src/Settings/CThree/ChartData.php         |  31 +
 .../src/Settings/CThree/ChartDimensions.php   |  13 +
 .../src/Settings/CThree/ChartLabel.php        |  13 +
 .../src/Settings/CThree/ChartTitle.php        |  13 +
 .../src/Settings/CThree/ChartType.php         |  12 +
 .../src/Plugin/chart/GoogleCharts.php         | 707 +++++++++---------
 .../src/Charts/HighchartsChartsRender.php     |   6 +-
 .../src/Plugin/chart/Highchart.php            | 256 +++----
 .../src/Settings/Highcharts/ChartCredits.php  |  13 +
 .../src/Settings/Highcharts/ChartLabel.php    |  13 +
 .../src/Settings/Highcharts/ChartLegend.php   |  61 ++
 .../src/Settings/Highcharts/ChartTitle.php    |  13 +
 .../Settings/Highcharts/DataLabelStatus.php   |  13 +
 .../src/Settings/Highcharts/DataLabels.php    |  13 +
 .../src/Settings/Highcharts/Highcharts.php    |  86 ++-
 .../src/Settings/Highcharts/Label.php         |  13 +
 .../src/Settings/Highcharts/PlotOptions.php   |  13 +
 .../src/Settings/Highcharts/Tooltip.php       |  13 +
 .../src/Settings/Highcharts/Xaxis.php         |  25 +
 .../src/Settings/Highcharts/XaxisTitle.php    |  12 +
 .../src/Settings/Highcharts/Yaxis.php         |  19 +
 .../src/Settings/Highcharts/YaxisLabel.php    |  15 +-
 .../src/Settings/Highcharts/YaxisTitle.php    |  12 +
 src/Charts/ChartsRenderInterface.php          |   2 +-
 src/Charts/ModuleSelector.php                 |  14 +-
 src/Form/ChartsConfigForm.php                 |  11 +-
 src/Plugin/chart/AbstractChart.php            |  55 +-
 .../display/ChartsPluginDisplayChart.php      |   6 +-
 .../views/style/ChartsPluginStyleChart.php    |  48 +-
 src/Services/ChartsSettingsService.php        |   6 +-
 src/Theme/ChartsInterface.php                 |   4 +-
 src/Util/Util.php                             |  12 +-
 39 files changed, 1145 insertions(+), 660 deletions(-)
 mode change 100755 => 100644 modules/charts_c3/src/Plugin/chart/CThreeCharts.php
 mode change 100755 => 100644 modules/charts_google/src/Plugin/chart/GoogleCharts.php
 mode change 100755 => 100644 modules/charts_highcharts/src/Plugin/chart/Highchart.php
 mode change 100755 => 100644 src/Plugin/chart/AbstractChart.php

diff --git a/charts.module b/charts.module
index 86374a3..a6d11c1 100644
--- a/charts.module
+++ b/charts.module
@@ -96,14 +96,14 @@ function template_preprocess_views_view_charts(&$variables) {
   $plugin_definitions = $plugin_manager->getDefinitions();
 
   if (!isset($plugin_definitions)) {
-      //to be removed in drupal 9
-      $moduleSelector = new ModuleSelector($library, $categories, $seriesData, $options, $attachmentDisplayOptions, $chartId);
-      if ($moduleSelector->moduleExists()) {
-          $moduleSelector->buildVariables($variables);
-      }
+    // To be removed in drupal 9.
+    $moduleSelector = new ModuleSelector($library, $categories, $seriesData, $options, $attachmentDisplayOptions, $chartId);
+    if ($moduleSelector->moduleExists()) {
+      $moduleSelector->buildVariables($variables);
+    }
   }
-  else{
-      $plugin = $plugin_manager->createInstance($library);
-      $plugin->buildVariables($options, $categories, $seriesData, $attachmentDisplayOptions, $variables, $chartId);
+  else {
+    $plugin = $plugin_manager->createInstance($library);
+    $plugin->buildVariables($options, $categories, $seriesData, $attachmentDisplayOptions, $variables, $chartId);
   }
 }
diff --git a/modules/charts_api_example/src/Controller/ChartsApiExample.php b/modules/charts_api_example/src/Controller/ChartsApiExample.php
index 835d1a0..18e3d6b 100644
--- a/modules/charts_api_example/src/Controller/ChartsApiExample.php
+++ b/modules/charts_api_example/src/Controller/ChartsApiExample.php
@@ -74,7 +74,7 @@ class ChartsApiExample extends ControllerBase implements ContainerInjectionInter
       '#seriesData' => $seriesData,
       '#options'    => $options,
     ];
-    
+
     return $build;
   }
 
diff --git a/modules/charts_c3/src/Charts/C3ChartsRender.php b/modules/charts_c3/src/Charts/C3ChartsRender.php
index 5c1ee8e..7bf275c 100644
--- a/modules/charts_c3/src/Charts/C3ChartsRender.php
+++ b/modules/charts_c3/src/Charts/C3ChartsRender.php
@@ -26,7 +26,7 @@ class C3ChartsRender implements ChartsRenderInterface {
   /**
    * {@inheritdoc}
    */
-  public function chartsRenderCharts(array $options = [], array $categories = [], array $seriesData = [], array $attachmentDisplayOptions = [],array &$variables = [], $chartId = '') {
+  public function chartsRenderCharts(array $options = [], array $categories = [], array $seriesData = [], array $attachmentDisplayOptions = [], array &$variables = [], $chartId = '') {
     $noAttachmentDisplays = count($attachmentDisplayOptions) === 0;
     $types = [];
 
@@ -84,14 +84,14 @@ class C3ChartsRender implements ChartsRenderInterface {
       array_push($c3Data, $categories);
       $chartData->setColumns($c3Data);
     }
-    else if ($options['type'] == 'column') {
+    elseif ($options['type'] == 'column') {
       $chartData->setType('bar');
       $chartAxis->setRotated(FALSE);
       array_unshift($categories, 'x');
       array_push($c3Data, $categories);
       $chartData->setColumns($c3Data);
     }
-    else if ($options['type'] == 'pie' || $options['type'] == 'donut') {
+    elseif ($options['type'] == 'pie' || $options['type'] == 'donut') {
       $chartData->setColumns($c3Data);
     }
     else {
diff --git a/modules/charts_c3/src/Plugin/chart/CThreeCharts.php b/modules/charts_c3/src/Plugin/chart/CThreeCharts.php
old mode 100755
new mode 100644
index 09e3ee0..b4bf849
--- a/modules/charts_c3/src/Plugin/chart/CThreeCharts.php
+++ b/modules/charts_c3/src/Plugin/chart/CThreeCharts.php
@@ -18,99 +18,100 @@ use Drupal\charts_c3\Settings\CThree\ChartAxis;
  *   name = @Translation("C3 Charts")
  * )
  */
-class CThreeCharts extends AbstractChart{
-    public function buildVariables($options, $categories = [], $seriesData = [], $attachmentDisplayOptions = [], &$variables,
-                           $chartId) {
-        $noAttachmentDisplays = count($attachmentDisplayOptions) === 0;
-        $types = [];
+class CThreeCharts extends AbstractChart {
 
-        // @todo - make this work for more that one attachment.
-        for ($i = 1; $i <= count($attachmentDisplayOptions); $i++) {
-            if ($attachmentDisplayOptions[$i - 1]['style']['options']['type'] == 'column') {
-                $types[$seriesData[$i]['name']] = 'bar';
-            }
-            else {
-                $types[$seriesData[$i]['name']] = $attachmentDisplayOptions[$i - 1]['style']['options']['type'];
-            }
-        }
-        $c3Data = [];
-        for ($i = 0; $i < count($seriesData); $i++) {
-            $c3DataTemp = $seriesData[$i]['data'];
-            array_unshift($c3DataTemp, $seriesData[$i]['name']);
-            array_push($c3Data, $c3DataTemp);
-        }
+  public function buildVariables($options, $categories = [], $seriesData = [], $attachmentDisplayOptions = [], &$variables, $chartId) {
+    $noAttachmentDisplays = count($attachmentDisplayOptions) === 0;
+    $types = [];
 
-        $c3Chart = new ChartType();
-        $c3Chart->setType($options['type']);
-        $c3ChartTitle = new ChartTitle();
-        $c3ChartTitle->setText($options['title']);
-        $chartAxis = new ChartAxis();
-        $c3 = new CThree();
-        $bindTo = '#' . $chartId;
-        $c3->setBindTo($bindTo);
-        $c3->setTitle($c3ChartTitle);
-        $chartData = new ChartData();
-        if ($noAttachmentDisplays > 0) {
-            $chartData->setLabels(FALSE);
-        }
+    // @todo - make this work for more that one attachment.
+    for ($i = 1; $i <= count($attachmentDisplayOptions); $i++) {
+      if ($attachmentDisplayOptions[$i - 1]['style']['options']['type'] == 'column') {
+        $types[$seriesData[$i]['name']] = 'bar';
+      }
+      else {
+        $types[$seriesData[$i]['name']] = $attachmentDisplayOptions[$i - 1]['style']['options']['type'];
+      }
+    }
+    $c3Data = [];
+    for ($i = 0; $i < count($seriesData); $i++) {
+      $c3DataTemp = $seriesData[$i]['data'];
+      array_unshift($c3DataTemp, $seriesData[$i]['name']);
+      array_push($c3Data, $c3DataTemp);
+    }
 
-        // Sets the primary y axis.
-        $yAxis = [];
-        $yAxis[$seriesData[0]['name']] = 'y';
-        $showAxis['show'] = TRUE;
-        $showAxis['label'] = $options['yaxis_title'];
-        $chartAxis->y = $showAxis;
+    $c3Chart = new ChartType();
+    $c3Chart->setType($options['type']);
+    $c3ChartTitle = new ChartTitle();
+    $c3ChartTitle->setText($options['title']);
+    $chartAxis = new ChartAxis();
+    $c3 = new CThree();
+    $bindTo = '#' . $chartId;
+    $c3->setBindTo($bindTo);
+    $c3->setTitle($c3ChartTitle);
+    $chartData = new ChartData();
+    if ($noAttachmentDisplays > 0) {
+      $chartData->setLabels(FALSE);
+    }
 
-        // Sets secondary axis from the first attachment only.
-        if (!$noAttachmentDisplays && $attachmentDisplayOptions[0]['inherit_yaxis'] == 0) {
-            $yAxis[$seriesData[1]['name']] = 'y2';
-            $showSecAxis['show'] = TRUE;
-            $showSecAxis['label'] = $attachmentDisplayOptions[0]['style']['options']['yaxis_title'];
-            $chartAxis->y2 = $showSecAxis;
-        }
+    // Sets the primary y axis.
+    $yAxis = [];
+    $yAxis[$seriesData[0]['name']] = 'y';
+    $showAxis['show'] = TRUE;
+    $showAxis['label'] = $options['yaxis_title'];
+    $chartAxis->y = $showAxis;
 
-        // Sets the chart type.
-        $chartData->setType($options['type']);
-        $c3->setData($chartData);
-        if ($options['type'] == 'bar') {
-            $chartAxis->setRotated(TRUE);
-            array_unshift($categories, 'x');
-            array_push($c3Data, $categories);
-            $chartData->setColumns($c3Data);
-        }
-        else if ($options['type'] == 'column') {
-            $chartData->setType('bar');
-            $chartAxis->setRotated(FALSE);
-            array_unshift($categories, 'x');
-            array_push($c3Data, $categories);
-            $chartData->setColumns($c3Data);
-        }
-        else if ($options['type'] == 'pie' || $options['type'] == 'donut') {
-            $chartData->setColumns($c3Data);
-        }
-        else {
-            array_unshift($categories, 'x');
-            array_push($c3Data, $categories);
-            $chartData->setColumns($c3Data);
-        }
-        $chartData->types = $types;
+    // Sets secondary axis from the first attachment only.
+    if (!$noAttachmentDisplays && $attachmentDisplayOptions[0]['inherit_yaxis'] == 0) {
+      $yAxis[$seriesData[1]['name']] = 'y2';
+      $showSecAxis['show'] = TRUE;
+      $showSecAxis['label'] = $attachmentDisplayOptions[0]['style']['options']['yaxis_title'];
+      $chartAxis->y2 = $showSecAxis;
+    }
 
-        if ($options['type'] != 'pie' && $options['type'] != 'donut') {
-            $c3->setAxis($chartAxis);
-        }
+    // Sets the chart type.
+    $chartData->setType($options['type']);
+    $c3->setData($chartData);
+    if ($options['type'] == 'bar') {
+      $chartAxis->setRotated(TRUE);
+      array_unshift($categories, 'x');
+      array_push($c3Data, $categories);
+      $chartData->setColumns($c3Data);
+    }
+    else if ($options['type'] == 'column') {
+      $chartData->setType('bar');
+      $chartAxis->setRotated(FALSE);
+      array_unshift($categories, 'x');
+      array_push($c3Data, $categories);
+      $chartData->setColumns($c3Data);
+    }
+    else if ($options['type'] == 'pie' || $options['type'] == 'donut') {
+      $chartData->setColumns($c3Data);
+    }
+    else {
+      array_unshift($categories, 'x');
+      array_push($c3Data, $categories);
+      $chartData->setColumns($c3Data);
+    }
+    $chartData->types = $types;
 
-        $chartColor = new ChartColor();
-        $seriesColors = [];
-        for ($i = 0; $i < count($seriesData); $i++) {
-            $seriesColor = $seriesData[$i]['color'];
-            array_push($seriesColors, $seriesColor);
-        }
-        $chartColor->setPattern($seriesColors);
-        $c3->setColor($chartColor);
+    if ($options['type'] != 'pie' && $options['type'] != 'donut') {
+      $c3->setAxis($chartAxis);
+    }
 
-        $variables['chart_type'] = 'c3';
-        $variables['content_attributes']['data-chart'][] = json_encode($c3);
-        $variables['attributes']['id'][0] = $chartId;
-        $variables['attributes']['class'][] = 'charts-c3';
+    $chartColor = new ChartColor();
+    $seriesColors = [];
+    for ($i = 0; $i < count($seriesData); $i++) {
+      $seriesColor = $seriesData[$i]['color'];
+      array_push($seriesColors, $seriesColor);
     }
-}
\ No newline at end of file
+    $chartColor->setPattern($seriesColors);
+    $c3->setColor($chartColor);
+
+    $variables['chart_type'] = 'c3';
+    $variables['content_attributes']['data-chart'][] = json_encode($c3);
+    $variables['attributes']['id'][0] = $chartId;
+    $variables['attributes']['class'][] = 'charts-c3';
+  }
+
+}
diff --git a/modules/charts_c3/src/Settings/CThree/CThree.php b/modules/charts_c3/src/Settings/CThree/CThree.php
index c98a878..80c8205 100644
--- a/modules/charts_c3/src/Settings/CThree/CThree.php
+++ b/modules/charts_c3/src/Settings/CThree/CThree.php
@@ -2,7 +2,11 @@
 
 namespace Drupal\charts_c3\Settings\CThree;
 
+/**
+ * CThree.
+ */
 class CThree implements \JsonSerializable {
+
   private $color;
   private $bindto;
   private $data;
@@ -10,77 +14,110 @@ class CThree implements \JsonSerializable {
   private $title;
 
   /**
+   * Get Title.
+   *
    * @return mixed
+   *   Title.
    */
   public function getTitle() {
     return $this->title;
   }
 
   /**
+   * Set Title.
+   *
    * @param mixed $title
+   *   Title.
    */
   public function setTitle($title) {
     $this->title = $title;
   }
 
   /**
+   * Get Axis.
+   *
    * @return mixed
+   *   Axis.
    */
   public function getAxis() {
     return $this->axis;
   }
 
   /**
+   * Set Axis.
+   *
    * @param mixed $axis
+   *   Axis.
    */
   public function setAxis($axis) {
     $this->axis = $axis;
   }
 
   /**
+   * Get Data.
+   *
    * @return mixed
+   *   Data.
    */
   public function getData() {
     return $this->data;
   }
 
   /**
+   * Set Data.
+   *
    * @param mixed $data
+   *   Data.
    */
   public function setData($data) {
     $this->data = $data;
   }
 
   /**
+   * Get Bind to.
+   *
    * @return string
+   *   Bind to.
    */
   public function getBindTo() {
     return $this->bindto;
   }
 
   /**
+   * Set Bind to.
+   *
    * @param mixed $bindto
+   *   Bind to.
    */
   public function setBindTo($bindto) {
     $this->bindto = $bindto;
   }
 
   /**
+   * Get Color.
+   *
    * @return mixed
+   *   Color.
    */
   public function getColor() {
     return $this->color;
   }
 
   /**
+   * Set Color.
+   *
    * @param mixed $color
+   *   Color.
    */
   public function setColor($color) {
     $this->color = $color;
   }
 
   /**
+   * Json Serialize.
+   *
    * @return array
+   *   Json Serialize.
    */
   public function jsonSerialize() {
     $vars = get_object_vars($this);
diff --git a/modules/charts_c3/src/Settings/CThree/ChartAxis.php b/modules/charts_c3/src/Settings/CThree/ChartAxis.php
index 617254e..c3bd294 100644
--- a/modules/charts_c3/src/Settings/CThree/ChartAxis.php
+++ b/modules/charts_c3/src/Settings/CThree/ChartAxis.php
@@ -2,26 +2,39 @@
 
 namespace Drupal\charts_c3\Settings\CThree;
 
+/**
+ * Chart Axis.
+ */
 class ChartAxis implements \JsonSerializable {
+
   private $rotated = FALSE;
   private $x = ['type' => 'category'];
 
   /**
+   * Get Rotated.
+   *
    * @return mixed
+   *   Rotated.
    */
   public function getRotated() {
     return $this->rotated;
   }
 
   /**
+   * Set Rotated.
+   *
    * @param mixed $rotated
+   *   Rotated.
    */
   public function setRotated($rotated) {
     $this->rotated = $rotated;
   }
 
   /**
+   * Json Serialize.
+   *
    * @return array
+   *   Json Serialize.
    */
   public function jsonSerialize() {
     $vars = get_object_vars($this);
diff --git a/modules/charts_c3/src/Settings/CThree/ChartColor.php b/modules/charts_c3/src/Settings/CThree/ChartColor.php
index aeb81f6..3f435ab 100644
--- a/modules/charts_c3/src/Settings/CThree/ChartColor.php
+++ b/modules/charts_c3/src/Settings/CThree/ChartColor.php
@@ -2,25 +2,38 @@
 
 namespace Drupal\charts_c3\Settings\CThree;
 
+/**
+ * Chart Color.
+ */
 class ChartColor implements \JsonSerializable {
+
   private $pattern = [];
 
   /**
+   * Get Pattern.
+   *
    * @return mixed
+   *   Pattern.
    */
   public function getPattern() {
     return $this->pattern;
   }
 
   /**
+   * Set Pattern.
+   *
    * @param mixed $pattern
+   *   Pattern.
    */
   public function setPattern($pattern) {
     $this->pattern = $pattern;
   }
 
   /**
+   * Json Serialize.
+   *
    * @return array
+   *   Json Serialize.
    */
   public function jsonSerialize() {
     $vars = get_object_vars($this);
diff --git a/modules/charts_c3/src/Settings/CThree/ChartData.php b/modules/charts_c3/src/Settings/CThree/ChartData.php
index 31cd15a..8c0d4b9 100644
--- a/modules/charts_c3/src/Settings/CThree/ChartData.php
+++ b/modules/charts_c3/src/Settings/CThree/ChartData.php
@@ -2,70 +2,101 @@
 
 namespace Drupal\charts_c3\Settings\CThree;
 
+/**
+ * Chart Data.
+ */
 class ChartData implements \JsonSerializable {
+
   private $columns = [];
   private $type;
   private $labels = TRUE;
   private $x = 'x';
 
   /**
+   * Get X.
+   *
    * @return array
+   *   X.
    */
   public function getX() {
     return $this->x;
   }
 
   /**
+   * Set X.
+   *
    * @param array $x
+   *   X.
    */
   public function setX($x) {
     $this->x = $x;
   }
 
   /**
+   * Get Columns.
+   *
    * @return array
+   *   Columns.
    */
   public function getColumns() {
     return $this->columns;
   }
 
   /**
+   * Set Columns.
+   *
    * @param array $columns
+   *   Columns.
    */
   public function setColumns($columns) {
     $this->columns = $columns;
   }
 
   /**
+   * Get Type.
+   *
    * @return mixed
+   *   Type.
    */
   public function getType() {
     return $this->type;
   }
 
   /**
+   * Set Type.
+   *
    * @param mixed $type
+   *   Type.
    */
   public function setType($type) {
     $this->type = $type;
   }
 
   /**
+   * Get Labels.
+   *
    * @return mixed
+   *   Labels.
    */
   public function getLabels() {
     return $this->labels;
   }
 
   /**
+   * Set Labels.
+   *
    * @param mixed $labels
+   *   Labels.
    */
   public function setLabels($labels) {
     $this->labels = $labels;
   }
 
   /**
+   * Json Serialize.
+   *
    * @return array
+   *   Json Serialize.
    */
   public function jsonSerialize() {
     $vars = get_object_vars($this);
diff --git a/modules/charts_c3/src/Settings/CThree/ChartDimensions.php b/modules/charts_c3/src/Settings/CThree/ChartDimensions.php
index 1365904..e861b23 100644
--- a/modules/charts_c3/src/Settings/CThree/ChartDimensions.php
+++ b/modules/charts_c3/src/Settings/CThree/ChartDimensions.php
@@ -2,25 +2,38 @@
 
 namespace Drupal\charts_c3\Settings\CThree;
 
+/**
+ * Chart Dimensions.
+ */
 class ChartDimensions implements \JsonSerializable {
+
   private $ratio;
 
   /**
+   * Get Ratio.
+   *
    * @return mixed
+   *   Ratio.
    */
   public function getRatio() {
     return $this->ratio;
   }
 
   /**
+   * Set Ratio.
+   *
    * @param mixed $ratio
+   *   Ratio.
    */
   public function setRatio($ratio) {
     $this->ratio = $ratio;
   }
 
   /**
+   * Json Serialize.
+   *
    * @return array
+   *   Json Serialize.
    */
   public function jsonSerialize() {
     $vars = get_object_vars($this);
diff --git a/modules/charts_c3/src/Settings/CThree/ChartLabel.php b/modules/charts_c3/src/Settings/CThree/ChartLabel.php
index ba521d5..b494bb1 100644
--- a/modules/charts_c3/src/Settings/CThree/ChartLabel.php
+++ b/modules/charts_c3/src/Settings/CThree/ChartLabel.php
@@ -2,25 +2,38 @@
 
 namespace Drupal\charts_c3\Settings\CThree;
 
+/**
+ * Chart Label.
+ */
 class ChartLabel implements \JsonSerializable {
+
   private $rotation;
 
   /**
+   * Get Rotation.
+   *
    * @return mixed
+   *   Rotation.
    */
   public function getRotation() {
     return $this->rotation;
   }
 
   /**
+   * Set Rotation.
+   *
    * @param mixed $rotation
+   *   Rotation.
    */
   public function setRotation($rotation) {
     $this->rotation = $rotation;
   }
 
   /**
+   * Json Serialize.
+   *
    * @return array
+   *   Json Serialize.
    */
   public function jsonSerialize() {
     $vars = get_object_vars($this);
diff --git a/modules/charts_c3/src/Settings/CThree/ChartTitle.php b/modules/charts_c3/src/Settings/CThree/ChartTitle.php
index 65f38dd..38707ea 100644
--- a/modules/charts_c3/src/Settings/CThree/ChartTitle.php
+++ b/modules/charts_c3/src/Settings/CThree/ChartTitle.php
@@ -2,25 +2,38 @@
 
 namespace Drupal\charts_c3\Settings\CThree;
 
+/**
+ * Chart Title.
+ */
 class ChartTitle implements \JsonSerializable {
+
   private $text;
 
   /**
+   * Get Text.
+   *
    * @return mixed
+   *   Text.
    */
   public function getText() {
     return $this->text;
   }
 
   /**
+   * Set Text.
+   *
    * @param mixed $text
+   *   Text.
    */
   public function setText($text) {
     $this->text = $text;
   }
 
   /**
+   * Json Serialize.
+   *
    * @return array
+   *   Json Serialize.
    */
   public function jsonSerialize() {
     $vars = get_object_vars($this);
diff --git a/modules/charts_c3/src/Settings/CThree/ChartType.php b/modules/charts_c3/src/Settings/CThree/ChartType.php
index 747d23b..7532151 100644
--- a/modules/charts_c3/src/Settings/CThree/ChartType.php
+++ b/modules/charts_c3/src/Settings/CThree/ChartType.php
@@ -2,24 +2,36 @@
 
 namespace Drupal\charts_c3\Settings\CThree;
 
+/**
+ * Chart Type.
+ */
 class ChartType implements \JsonSerializable {
+
   private $type;
 
   /**
+   * Get Type.
+   *
    * @return mixed
+   *   Type.
    */
   public function getType() {
     return $this->type;
   }
 
   /**
+   * Set Type.
+   *
    * @param mixed $type
+   *   Type.
    */
   public function setType($type) {
     $this->type = $type;
   }
 
   /**
+   * Json Serialize.
+   *
    * @return array
    */
   public function jsonSerialize() {
diff --git a/modules/charts_google/src/Plugin/chart/GoogleCharts.php b/modules/charts_google/src/Plugin/chart/GoogleCharts.php
old mode 100755
new mode 100644
index a55d547..d6f0d86
--- a/modules/charts_google/src/Plugin/chart/GoogleCharts.php
+++ b/modules/charts_google/src/Plugin/chart/GoogleCharts.php
@@ -1,4 +1,5 @@
 <?php
+
 namespace Drupal\charts_google\Plugin\chart;
 
 use Drupal\charts\Plugin\chart\AbstractChart;
@@ -17,353 +18,367 @@ use Drupal\charts_google\Settings\Google\VerticalAxis;
  * )
  */
 class GoogleCharts extends AbstractChart {
-    /**
-     * Creates a JSON Object formatted for Google charts to use
-     * @param array $categories
-     * @param array $seriesData
-     *
-     * @return json|string
-     */
-    public function buildVariables($options, $categories = [], $seriesData = [], $attachmentDisplayOptions = [], &$variables, $chartId) {
-        $categoriesCount = count($categories);
-        $seriesCount = count($seriesData);
-
-        // Creates an array of the length of the series data.
-        $dataCount = [];
-        for ($x = 0; $x < $seriesCount; $x++) {
-            $dataCountTemp = count($seriesData[$x]['data']);
-            array_push($dataCount, $dataCountTemp);
-        }
-
-        $dataTable = [];
-        for ($j = 0; $j < $categoriesCount; $j++) {
-            $rowDataTable = [];
-            for ($i = 0; $i < $seriesCount; $i++) {
-                $rowDataTabletemp = $seriesData[$i]['data'][$j];
-                array_push($rowDataTable, $rowDataTabletemp);
-            }
-            array_unshift($rowDataTable, $categories[$j]);
-            array_push($dataTable, $rowDataTable);
-        }
-
-        $dataTableHeader = [];
-        for ($r = 0; $r < $seriesCount; $r++) {
-            array_push($dataTableHeader, $seriesData[$r]['name']);
-        }
-        array_unshift($dataTableHeader, 'label');
-        array_unshift($dataTable, $dataTableHeader);
-
-        $googleOptions = $this->createChartsOptions($options, $seriesData, $attachmentDisplayOptions);
-        $googleChartType = $this->createChartType($options);
-        $variables['chart_type'] = 'google';
-        $variables['attributes']['class'][0] = 'charts-google';
-        $variables['attributes']['id'][0] = $chartId;
-        $variables['content_attributes']['data-chart'][] = json_encode($dataTable);
-        $variables['attributes']['google-options'][1] = json_encode($googleOptions);
-        $variables['attributes']['google-chart-type'][2] = json_encode($googleChartType);
-    }
-
-    /**
-     * Create charts options.
-     *
-     * @param array $options
-     *   Options.
-     * @param array $seriesData
-     *   Series data.
-     * @param array $attachmentDisplayOptions
-     *   Attachment Display Options.
-     *
-     * @return \Drupal\charts_google\Settings\Google\GoogleOptions
-     *   GoogleOptions object with chart options or settings to be used by google visualization framework.
-     */
-    private function createChartsOptions(array $options = [], array $seriesData = [], array $attachmentDisplayOptions = []) {
-        $noAttachmentDisplays = count($attachmentDisplayOptions) === 0;
-
-        $chartSelected = [];
-        $seriesTypes = [];
-
-        $firstVaxis = new VerticalAxis();
-
-        if (isset($options['yaxis_min'])) {
-            $firstVaxis->setMinValue($options['yaxis_min']);
-        }
-
-        if (isset($options['yaxis_view_min'])) {
-            $firstVaxis->setViewWindowValue('min', $options['yaxis_view_min']);
-        }
-
-        if (isset($options['yaxis_view_max'])) {
-            $firstVaxis->setViewWindowValue('max', $options['yaxis_view_max']);
-        }
-
-        if (isset($options['yaxis_max'])) {
-            $firstVaxis->setMaxValue($options['yaxis_max']);
-        }
-
-        // A format string for numeric or date axis labels.
-        if (isset($options['yaxis_title'])) {
-            $firstVaxis->setTitle($options['yaxis_title']);
-        }
-
-        if (isset($options['yaxis_title_color'])) {
-            $firstVaxis->setTitleTextStyleValue('color', $options['yaxis_title_color']);
-        }
-
-        if (isset($options['yaxis_title_font'])) {
-            $firstVaxis->setTitleTextStyleValue('fontName', $options['yaxis_title_font']);
-        }
-
-        if (isset($options['yaxis_title_size'])) {
-            $firstVaxis->setTitleTextStyleValue('fontSize', $options['yaxis_title_size']);
-        }
-
-        if (isset($options['yaxis_title_bold'])) {
-            $firstVaxis->setTitleTextStyleValue('bold', $options['yaxis_title_bold']);
-        }
-
-        if (isset($options['yaxis_title_italic'])) {
-            $firstVaxis->setTitleTextStyleValue('italic', $options['yaxis_title_italic']);
-        }
-
-        // Axis title position.
-        if (isset($options['yaxis_title_position'])) {
-            $firstVaxis->setTextPosition($options['yaxis_title_position']);
-        }
-
-        if (isset($options['yaxis_baseline'])) {
-            $firstVaxis->setBaseline($options['yaxis_baseline']);
-        }
-
-        if (isset($options['yaxis_baseline_color'])) {
-            $firstVaxis->setBaselineColor($options['yaxis_baseline_color']);
-        }
-
-        if (isset($options['yaxis_direction'])) {
-            $firstVaxis->setDirection($options['yaxis_direction']);
-        }
-
-        // A format string for numeric or date axis labels.
-        if (isset($options['yaxis_format'])) {
-            $firstVaxis->setFormat($options['yaxis_format']);
-        }
-
-        if (isset($options['yaxis_view_window_mode'])) {
-            $firstVaxis->setViewWindowMode($options['yaxis_view_window_mode']);
-        }
-
-        $firstHaxis = new HorizontalAxis();
-
-        if (isset($options['xaxis_min'])) {
-            $firstHaxis->setMinValue($options['xaxis_min']);
-        }
-
-        if (isset($options['xaxis_view_min'])) {
-            $firstHaxis->setViewWindowValue('min', $options['xaxis_view_min']);
-        }
-
-        if (isset($options['xaxis_view_max'])) {
-            $firstHaxis->setViewWindowValue('max', $options['xaxis_view_max']);
-        }
-
-        if (isset($options['xaxis_max'])) {
-            $firstHaxis->setMaxValue($options['xaxis_max']);
-        }
-
-        // A format string for numeric or date axis labels.
-        if (isset($options['xaxis_title'])) {
-            $firstHaxis->setTitle($options['xaxis_title']);
-        }
-
-        if (isset($options['xaxis_title_color'])) {
-            $firstHaxis->setTitleTextStyleValue('color', $options['xaxis_title_color']);
-        }
 
-        if (isset($options['xaxis_title_font'])) {
-            $firstHaxis->setTitleTextStyleValue('fontName', $options['xaxis_title_font']);
-        }
+  /**
+   * Creates a JSON Object formatted for Google charts to use.
+   *
+   * @param mixed $options
+   *   Options.
+   * @param mixed $categories
+   *   Categories.
+   * @param mixed $seriesData
+   *   Series data.
+   * @param mixed $attachmentDisplayOptions
+   *   Attachment display options.
+   * @param mixed &$variables
+   *   Variables.
+   * @param mixed $chartId
+   *   Chart Id.
+   */
+  public function buildVariables($options, $categories = [], $seriesData = [], $attachmentDisplayOptions = [], &$variables, $chartId) {
+
+    $categoriesCount = count($categories);
+    $seriesCount = count($seriesData);
+
+    // Creates an array of the length of the series data.
+    $dataCount = [];
+    for ($x = 0; $x < $seriesCount; $x++) {
+      $dataCountTemp = count($seriesData[$x]['data']);
+      array_push($dataCount, $dataCountTemp);
+    }
+
+    $dataTable = [];
+    for ($j = 0; $j < $categoriesCount; $j++) {
+      $rowDataTable = [];
+      for ($i = 0; $i < $seriesCount; $i++) {
+        $rowDataTabletemp = $seriesData[$i]['data'][$j];
+        array_push($rowDataTable, $rowDataTabletemp);
+      }
+      array_unshift($rowDataTable, $categories[$j]);
+      array_push($dataTable, $rowDataTable);
+    }
+
+    $dataTableHeader = [];
+    for ($r = 0; $r < $seriesCount; $r++) {
+      array_push($dataTableHeader, $seriesData[$r]['name']);
+    }
+    array_unshift($dataTableHeader, 'label');
+    array_unshift($dataTable, $dataTableHeader);
+
+    $googleOptions = $this->createChartsOptions($options, $seriesData, $attachmentDisplayOptions);
+    $googleChartType = $this->createChartType($options);
+    $variables['chart_type'] = 'google';
+    $variables['attributes']['class'][0] = 'charts-google';
+    $variables['attributes']['id'][0] = $chartId;
+    $variables['content_attributes']['data-chart'][] = json_encode($dataTable);
+    $variables['attributes']['google-options'][1] = json_encode($googleOptions);
+    $variables['attributes']['google-chart-type'][2] = json_encode($googleChartType);
+  }
+
+  /**
+   * Create charts options.
+   *
+   * @param array $options
+   *   Options.
+   * @param array $seriesData
+   *   Series data.
+   * @param array $attachmentDisplayOptions
+   *   Attachment Display Options.
+   *
+   * @return \Drupal\charts_google\Settings\Google\GoogleOptions
+   *   GoogleOptions object with chart options or settings to be used by google
+   *   visualization framework.
+   */
+  private function createChartsOptions(array $options = [], array $seriesData = [], array $attachmentDisplayOptions = []) {
+    $noAttachmentDisplays = count($attachmentDisplayOptions) === 0;
+
+    $chartSelected = [];
+    $seriesTypes   = [];
+
+    $firstVaxis = new VerticalAxis();
+
+    if (isset($options['yaxis_min'])) {
+      $firstVaxis->setMinValue($options['yaxis_min']);
+    }
+
+    if (isset($options['yaxis_view_min'])) {
+      $firstVaxis->setViewWindowValue('min', $options['yaxis_view_min']);
+    }
+
+    if (isset($options['yaxis_view_max'])) {
+      $firstVaxis->setViewWindowValue('max', $options['yaxis_view_max']);
+    }
+
+    if (isset($options['yaxis_max'])) {
+      $firstVaxis->setMaxValue($options['yaxis_max']);
+    }
+
+    // A format string for numeric or date axis labels.
+    if (isset($options['yaxis_title'])) {
+      $firstVaxis->setTitle($options['yaxis_title']);
+    }
+
+    if (isset($options['yaxis_title_color'])) {
+      $firstVaxis->setTitleTextStyleValue('color', $options['yaxis_title_color']);
+    }
+
+    if (isset($options['yaxis_title_font'])) {
+      $firstVaxis->setTitleTextStyleValue('fontName', $options['yaxis_title_font']);
+    }
+
+    if (isset($options['yaxis_title_size'])) {
+      $firstVaxis->setTitleTextStyleValue('fontSize', $options['yaxis_title_size']);
+    }
+
+    if (isset($options['yaxis_title_bold'])) {
+      $firstVaxis->setTitleTextStyleValue('bold', $options['yaxis_title_bold']);
+    }
+
+    if (isset($options['yaxis_title_italic'])) {
+      $firstVaxis->setTitleTextStyleValue('italic', $options['yaxis_title_italic']);
+    }
+
+    // Axis title position.
+    if (isset($options['yaxis_title_position'])) {
+      $firstVaxis->setTextPosition($options['yaxis_title_position']);
+    }
+
+    if (isset($options['yaxis_baseline'])) {
+      $firstVaxis->setBaseline($options['yaxis_baseline']);
+    }
+
+    if (isset($options['yaxis_baseline_color'])) {
+      $firstVaxis->setBaselineColor($options['yaxis_baseline_color']);
+    }
+
+    if (isset($options['yaxis_direction'])) {
+      $firstVaxis->setDirection($options['yaxis_direction']);
+    }
+
+    // A format string for numeric or date axis labels.
+    if (isset($options['yaxis_format'])) {
+      $firstVaxis->setFormat($options['yaxis_format']);
+    }
+
+    if (isset($options['yaxis_view_window_mode'])) {
+      $firstVaxis->setViewWindowMode($options['yaxis_view_window_mode']);
+    }
+
+    $firstHaxis = new HorizontalAxis();
+
+    if (isset($options['xaxis_min'])) {
+      $firstHaxis->setMinValue($options['xaxis_min']);
+    }
+
+    if (isset($options['xaxis_view_min'])) {
+      $firstHaxis->setViewWindowValue('min', $options['xaxis_view_min']);
+    }
+
+    if (isset($options['xaxis_view_max'])) {
+      $firstHaxis->setViewWindowValue('max', $options['xaxis_view_max']);
+    }
+
+    if (isset($options['xaxis_max'])) {
+      $firstHaxis->setMaxValue($options['xaxis_max']);
+    }
+
+    // A format string for numeric or date axis labels.
+    if (isset($options['xaxis_title'])) {
+      $firstHaxis->setTitle($options['xaxis_title']);
+    }
+
+    if (isset($options['xaxis_title_color'])) {
+      $firstHaxis->setTitleTextStyleValue('color', $options['xaxis_title_color']);
+    }
+
+    if (isset($options['xaxis_title_font'])) {
+      $firstHaxis->setTitleTextStyleValue('fontName', $options['xaxis_title_font']);
+    }
+
+    if (isset($options['xaxis_title_size'])) {
+      $firstHaxis->setTitleTextStyleValue('fontSize', $options['xaxis_title_size']);
+    }
+
+    if (isset($options['xaxis_title_bold'])) {
+      $firstHaxis->setTitleTextStyleValue('bold', $options['xaxis_title_bold']);
+    }
+
+    if (isset($options['xaxis_title_italic'])) {
+      $firstHaxis->setTitleTextStyleValue('italic', $options['xaxis_title_italic']);
+    }
+
+    // Axis title position.
+    if (isset($options['xaxis_title_position'])) {
+      $firstHaxis->setTextPosition($options['xaxis_title_position']);
+    }
+
+    if (isset($options['xaxis_baseline'])) {
+      $firstHaxis->setBaseline($options['xaxis_baseline']);
+    }
+
+    if (isset($options['xaxis_baseline_color'])) {
+      $firstHaxis->setBaselineColor($options['xaxis_baseline_color']);
+    }
+
+    if (isset($options['xaxis_direction'])) {
+      $firstHaxis->setDirection($options['xaxis_direction']);
+    }
+
+    // A format string for numeric or date axis labels.
+    if (isset($options['xaxis_format'])) {
+      $firstHaxis->setFormat($options['xaxis_format']);
+    }
+
+    if (isset($options['xaxis_view_window_mode'])) {
+      $firstHaxis->setViewWindowMode($options['xaxis_view_window_mode']);
+    }
+
+    $vAxes = [];
+    $hAxes = [];
+
+    array_push($vAxes, $firstVaxis);
+    array_push($hAxes, $firstHaxis);
+
+    // Sets secondary axis from the first attachment only.
+    if (!$noAttachmentDisplays && $attachmentDisplayOptions[0]['inherit_yaxis'] == 0) {
+      $secondVaxis = new VerticalAxis();
+      $secondVaxis->setTitle($attachmentDisplayOptions[0]['style']['options']['yaxis_title']);
+      array_push($vAxes, $secondVaxis);
+    }
+
+    array_push($chartSelected, $options['type']);
+
+    // @todo: make sure this works for more than one attachment.
+    for ($i = 0; $i < count($attachmentDisplayOptions); $i++) {
+      $attachmentChartType = $attachmentDisplayOptions[$i]['style']['options']['type'];
+
+      if ($attachmentChartType == 'column') {
+        $attachmentChartType = 'bars';
+      }
+
+      if ($attachmentDisplayOptions[$i]['inherit_yaxis'] == 0 && $i == 0) {
+        $seriesTypes[$i + 1] = [
+          'type'            => $attachmentChartType,
+          'targetAxisIndex' => 1
+        ];
+      }
+      else {
+        $seriesTypes[$i + 1] = ['type' => $attachmentChartType];
+      }
+
+      array_push($chartSelected, $attachmentChartType);
+    }
+
+    $chartSelected = array_unique($chartSelected);
+    $googleOptions = new GoogleOptions();
+
+    if (count($chartSelected) > 1) {
+      $parentChartType = $options['type'];
+
+      if ($parentChartType == 'column') {
+        $parentChartType = 'bars';
+      }
+
+      $googleOptions->seriesType = $parentChartType;
+      $googleOptions->series     = $seriesTypes;
+    }
+
+    $googleOptions->setTitle($options['title']);
+
+    if (isset($options['subtitle'])) {
+      $googleOptions->setSubTitle($options['subtitle']);
+    }
+
+    $googleOptions->setVerticalAxes($vAxes);
+    $googleOptions->setHorizontalAxes($hAxes);
+
+    if (in_array('donut', $chartSelected)) {
+      $googleOptions->pieHole = '0.5';
+    }
+
+    $chartArea = new ChartArea();
+
+    // Chart Area width.
+    if (isset($options['chart_area']['width'])) {
+      $chartArea->setWidth($options['chart_area']['width']);
+    }
+
+    // Chart Area height.
+    if (isset($options['chart_area']['height'])) {
+      $chartArea->setHeight($options['chart_area']['height']);
+    }
+
+    // Chart Area padding top.
+    if (isset($options['chart_area']['top'])) {
+      $chartArea->setPaddingTop($options['chart_area']['top']);
+    }
 
-        if (isset($options['xaxis_title_size'])) {
-            $firstHaxis->setTitleTextStyleValue('fontSize', $options['xaxis_title_size']);
-        }
+    // Chart Area padding left.
+    if (isset($options['chart_area']['left'])) {
+      $chartArea->setPaddingLeft($options['chart_area']['left']);
+    }
+
+    $seriesColors = [];
+    for ($i = 0; $i < count($seriesData); $i++) {
+      $seriesColor = $seriesData[$i]['color'];
+      array_push($seriesColors, $seriesColor);
+    }
+    $googleOptions->setColors($seriesColors);
+
+    // Width of the chart, in pixels.
+    if (isset($options['width'])) {
+      $googleOptions->setWidth($options['width']);
+    }
+
+    // Height of the chart, in pixels.
+    if (isset($options['height'])) {
+      $googleOptions->setHeight($options['height']);
+    }
 
-        if (isset($options['xaxis_title_bold'])) {
-            $firstHaxis->setTitleTextStyleValue('bold', $options['xaxis_title_bold']);
-        }
+    // 'legend' can be a string (for position) or an array with legend
+    // properties: [position: 'top', textStyle: [color: 'blue', fontSize: 16]]
+    if (isset($options['legend'])) {
+      $googleOptions->setLegend($options['legend']);
+    }
+
+    // Set legend position.
+    if (isset($options['legend_position'])) {
+      if (empty($options['legend_position'])) {
+        $options['legend_position'] = 'none';
+        $googleOptions->setLegend($options['legend_position']);
+      }
+      else {
+        $googleOptions->setLegend($options['legend_position']);
+      }
+    }
+
+    // Where to place the chart title, compared to the chart area.
+    if (isset($options['title_position'])) {
+      $googleOptions->setTitlePosition($options['title_position']);
+    }
+
+    // Where to place the axis titles, compared to the chart area
+    if (isset($options['axis_titles_position'])) {
+      $googleOptions->setAxisTitlesPosition($options['axis_titles_position']);
+    }
 
-        if (isset($options['xaxis_title_italic'])) {
-            $firstHaxis->setTitleTextStyleValue('italic', $options['xaxis_title_italic']);
-        }
-
-        // Axis title position.
-        if (isset($options['xaxis_title_position'])) {
-            $firstHaxis->setTextPosition($options['xaxis_title_position']);
-        }
-
-        if (isset($options['xaxis_baseline'])) {
-            $firstHaxis->setBaseline($options['xaxis_baseline']);
-        }
-
-        if (isset($options['xaxis_baseline_color'])) {
-            $firstHaxis->setBaselineColor($options['xaxis_baseline_color']);
-        }
-
-        if (isset($options['xaxis_direction'])) {
-            $firstHaxis->setDirection($options['xaxis_direction']);
-        }
-
-        // A format string for numeric or date axis labels.
-        if (isset($options['xaxis_format'])) {
-            $firstHaxis->setFormat($options['xaxis_format']);
-        }
-
-        if (isset($options['xaxis_view_window_mode'])) {
-            $firstHaxis->setViewWindowMode($options['xaxis_view_window_mode']);
-        }
-
-        $vAxes = [];
-        $hAxes = [];
-
-        array_push($vAxes, $firstVaxis);
-        array_push($hAxes, $firstHaxis);
-
-        // Sets secondary axis from the first attachment only.
-        if (!$noAttachmentDisplays && $attachmentDisplayOptions[0]['inherit_yaxis'] == 0) {
-            $secondVaxis = new VerticalAxis();
-            $secondVaxis->setTitle($attachmentDisplayOptions[0]['style']['options']['yaxis_title']);
-            array_push($vAxes, $secondVaxis);
-        }
-
-        array_push($chartSelected, $options['type']);
-
-        // @todo: make sure this works for more than one attachment.
-        for ($i = 0; $i < count($attachmentDisplayOptions); $i++) {
-            $attachmentChartType = $attachmentDisplayOptions[$i]['style']['options']['type'];
-
-            if ($attachmentChartType == 'column') {
-                $attachmentChartType = 'bars';
-            }
-
-            if ($attachmentDisplayOptions[$i]['inherit_yaxis'] == 0 && $i == 0) {
-                $seriesTypes[$i + 1] = [
-                    'type'            => $attachmentChartType,
-                    'targetAxisIndex' => 1
-                ];
-            }
-            else {
-                $seriesTypes[$i + 1] = ['type' => $attachmentChartType];
-            }
-
-            array_push($chartSelected, $attachmentChartType);
-        }
-
-        $chartSelected = array_unique($chartSelected);
-        $googleOptions = new GoogleOptions();
-
-        if (count($chartSelected) > 1) {
-            $parentChartType = $options['type'];
-
-            if ($parentChartType == 'column') {
-                $parentChartType = 'bars';
-            }
-
-            $googleOptions->seriesType = $parentChartType;
-            $googleOptions->series = $seriesTypes;
-        }
-
-        $googleOptions->setTitle($options['title']);
-
-        if (isset($options['subtitle'])) {
-            $googleOptions->setSubTitle($options['subtitle']);
-        }
-
-        $googleOptions->setVerticalAxes($vAxes);
-        $googleOptions->setHorizontalAxes($hAxes);
-
-        if (in_array('donut', $chartSelected)) {
-            $googleOptions->pieHole = '0.5';
-        }
-
-        $chartArea = new ChartArea();
-
-        // Chart Area width.
-        if (isset($options['chart_area']['width'])) {
-            $chartArea->setWidth($options['chart_area']['width']);
-        }
-
-        // Chart Area height.
-        if (isset($options['chart_area']['height'])) {
-            $chartArea->setHeight($options['chart_area']['height']);
-        }
-
-        // Chart Area padding top.
-        if (isset($options['chart_area']['top'])) {
-            $chartArea->setPaddingTop($options['chart_area']['top']);
-        }
-
-        // Chart Area padding left.
-        if (isset($options['chart_area']['left'])) {
-            $chartArea->setPaddingLeft($options['chart_area']['left']);
-        }
-
-        $seriesColors = [];
-        for ($i = 0; $i < count($seriesData); $i++) {
-            $seriesColor = $seriesData[$i]['color'];
-            array_push($seriesColors, $seriesColor);
-        }
-        $googleOptions->setColors($seriesColors);
-
-        // Width of the chart, in pixels.
-        if (isset($options['width'])) {
-            $googleOptions->setWidth($options['width']);
-        }
-
-        // Height of the chart, in pixels.
-        if (isset($options['height'])) {
-            $googleOptions->setHeight($options['height']);
-        }
-
-        // 'legend' can be a string (for position) or an array with legend
-        // properties: [position: 'top', textStyle: [color: 'blue', fontSize: 16]]
-        if (isset($options['legend'])) {
-            $googleOptions->setLegend($options['legend']);
-        }
-
-        // Set legend position.
-        if (isset($options['legend_position'])) {
-            if(empty($options['legend_position'])) {
-                $options['legend_position'] = 'none';
-                $googleOptions->setLegend($options['legend_position']);
-            } else {
-                $googleOptions->setLegend($options['legend_position']);
-            }
-        }
-
-        // Where to place the chart title, compared to the chart area.
-        if (isset($options['title_position'])) {
-            $googleOptions->setTitlePosition($options['title_position']);
-        }
-
-        // Where to place the axis titles, compared to the chart area
-        if (isset($options['axis_titles_position'])) {
-            $googleOptions->setAxisTitlesPosition($options['axis_titles_position']);
-        }
-
-        return $googleOptions;
-    }
-
-    /**
-     * Create Chart Type.
-     *
-     * @param array $options
-     *   Options.
-     *
-     * @return \Drupal\charts_google\Settings\Google\ChartType
-     *   ChartType.
-     */
-    private function createChartType(array $options = []) {
-        $googleChartType = new ChartType();
-        $googleChartType->setChartType($options['type']);
-
-        return $googleChartType;
-    }
-}
\ No newline at end of file
+    return $googleOptions;
+  }
+
+  /**
+   * Create Chart Type.
+   *
+   * @param array $options
+   *   Options.
+   *
+   * @return \Drupal\charts_google\Settings\Google\ChartType
+   *   ChartType.
+   */
+  private function createChartType(array $options = []) {
+    $googleChartType = new ChartType();
+    $googleChartType->setChartType($options['type']);
+
+    return $googleChartType;
+  }
+
+}
diff --git a/modules/charts_highcharts/src/Charts/HighchartsChartsRender.php b/modules/charts_highcharts/src/Charts/HighchartsChartsRender.php
index 7b522aa..d28285a 100644
--- a/modules/charts_highcharts/src/Charts/HighchartsChartsRender.php
+++ b/modules/charts_highcharts/src/Charts/HighchartsChartsRender.php
@@ -41,11 +41,11 @@ class HighchartsChartsRender implements ChartsRenderInterface {
     $chart = new Chart();
     $typeOptions = $options['type'];
     // @todo: make this so that it happens if any display uses donut.
-    if ($typeOptions == 'donut'){
+    if ($typeOptions == 'donut') {
       $typeOptions = 'pie';
       // Remove donut from seriesData.
       foreach ($seriesData as $key => &$value) {
-        $value = str_replace('donut','pie',$value);
+        $value = str_replace('donut', 'pie', $value);
       }
       // Add innerSize to differentiate between donut and pie.
       foreach ($seriesData as $key => &$value) {
@@ -137,7 +137,7 @@ class HighchartsChartsRender implements ChartsRenderInterface {
     $highchart->setChart($chart);
     $highchart->setTitle($chartTitle);
     $highchart->setXAxis($chartXaxis);
-//    $highchart->yAxis = $yAxes;
+    /* $highchart->yAxis = $yAxes; */
     $highchart->setTooltip($chartTooltip);
     $highchart->setPlotOptions($plotOptions);
     $highchart->setCredits($chartCredits);
diff --git a/modules/charts_highcharts/src/Plugin/chart/Highchart.php b/modules/charts_highcharts/src/Plugin/chart/Highchart.php
old mode 100755
new mode 100644
index 0cc1340..9922807
--- a/modules/charts_highcharts/src/Plugin/chart/Highchart.php
+++ b/modules/charts_highcharts/src/Plugin/chart/Highchart.php
@@ -1,10 +1,11 @@
 <?php
+
 namespace Drupal\charts_highcharts\Plugin\chart;
 
 use Drupal\charts\Plugin\chart\AbstractChart;
-//use Drupal\Charts\Annotation\Chart;
+/* use Drupal\Charts\Annotation\Chart; */
 use Drupal\charts_highcharts\Settings\Highcharts\Chart;
-//use Drupal\charts_highcharts\Settings\Highcharts\ChartType;
+/* use Drupal\charts_highcharts\Settings\Highcharts\ChartType; */
 use Drupal\charts_highcharts\Settings\Highcharts\ChartTitle;
 use Drupal\charts_highcharts\Settings\Highcharts\Xaxis;
 use Drupal\charts_highcharts\Settings\Highcharts\XaxisTitle;
@@ -19,6 +20,7 @@ use Drupal\charts_highcharts\Settings\Highcharts\Tooltip;
 use Drupal\charts_highcharts\Settings\Highcharts\ChartCredits;
 use Drupal\charts_highcharts\Settings\Highcharts\ChartLegend;
 use Drupal\charts_highcharts\Settings\Highcharts\Highcharts;
+
 /**
  * Defines a concrete class for a Highcharts.
  *
@@ -27,128 +29,130 @@ use Drupal\charts_highcharts\Settings\Highcharts\Highcharts;
  *   name = @Translation("Highcharts")
  * )
  */
-class Highchart extends AbstractChart{
-    /**
-     * Creates a JSON Object formatted for Highcharts to use
-     *
-     * @param $options
-     * @param array $categories
-     * @param array $seriesData
-     *
-     * @param array $attachmentDisplayOptions
-     *
-     * @return Highcharts object to be used by highcharts javascripts visualization framework
-     */
-    public function buildVariables($options, $categories = [], $seriesData = [], $attachmentDisplayOptions = [], &$variables, $chartId) {
-        $noAttachmentDisplays = count($attachmentDisplayOptions) === 0;
-
-        $chart = new Chart();
-        $typeOptions = $options['type'];
-        // @todo: make this so that it happens if any display uses donut.
-        if ($typeOptions == 'donut'){
-            $typeOptions = 'pie';
-            // Remove donut from seriesData.
-            foreach ($seriesData as $key => &$value) {
-                $value = str_replace('donut','pie',$value);
-            }
-            // Add innerSize to differentiate between donut and pie.
-            foreach ($seriesData as $key => &$value) {
-                $innerSize['showInLegend'] = 'true';
-                $innerSize['innerSize'] = '40%';
-                $chartPlacement = array_search($value, $seriesData);
-                $seriesData[$chartPlacement] = array_merge($innerSize, $seriesData[$chartPlacement]);
-            }
-        }
-        $chart->setType($typeOptions);
-
-        // Set chart width.
-        if (isset($options['width'])) {
-            $chart->setWidth($options['width']);
-        }
-
-        // Set chart height.
-        if (isset($options['height'])) {
-            $chart->setHeight($options['height']);
-        }
-
-        // Set chart title.
-        $chartTitle = new ChartTitle();
-        if (isset($options['title'])) {
-            $chartTitle->setText($options['title']);
-        }
-
-        $chartXaxis = new Xaxis();
-        $chartLabels = new ChartLabel();
-
-        // Set x-axis label rotation.
-        if (isset($options['xaxis_labels_rotation'])) {
-            $chartLabels->setRotation($options['xaxis_labels_rotation']);
-        }
-
-        $chartXaxis->setCategories($categories);
-
-        // Set x-axis title.
-        $xAxisTitle = new XaxisTitle();
-        if (isset($options['xaxis_title'])) {
-            $xAxisTitle->setText($options['xaxis_title']);
-        }
-        $chartXaxis->setTitle($xAxisTitle);
-        $chartXaxis->setLabels($chartLabels);
-        $yaxisLabels = new YaxisLabel();
-        $chartYaxis = new Yaxis();
-        $yAxes = [];
-        $yAxisTitle = new YaxisTitle();
-        $yAxisTitle->setText($options['yaxis_title']);
-        if (!empty($options['yaxis_min'])) {
-            $chartYaxis->min = $options['yaxis_min'];
-        }
-        if (!empty($options['yaxis_max'])) {
-            $chartYaxis->max = $options['yaxis_max'];
-        }
-
-        $chartYaxis->setLabels($yaxisLabels);
-        $chartYaxis->setTitle($yAxisTitle);
-        array_push($yAxes, $chartYaxis);
-
-        // Chart libraries tend to support only one secondary axis.
-        if (!$noAttachmentDisplays && $attachmentDisplayOptions[0]['inherit_yaxis'] == 0) {
-            $chartYaxisSecondary = new Yaxis();
-            $yAxisTitleSecondary = new YaxisTitle();
-            $yAxisTitleSecondary->setText($attachmentDisplayOptions[0]['style']['options']['yaxis_title']);
-            $chartYaxisSecondary->setTitle($yAxisTitleSecondary);
-            $chartYaxisSecondary->setLabels($yaxisLabels);
-            $chartYaxisSecondary->opposite = 'true';
-            if (!empty($attachmentDisplayOptions[0]['style']['options']['yaxis_min'])) {
-                $chartYaxisSecondary->min = $attachmentDisplayOptions[0]['style']['options']['yaxis_min'];
-            }
-            if (!empty($attachmentDisplayOptions[0]['style']['options']['yaxis_max'])) {
-                $chartYaxisSecondary->max = $attachmentDisplayOptions[0]['style']['options']['yaxis_max'];
-            }
-            array_push($yAxes, $chartYaxisSecondary);
-        }
-        $dataLabelStatus = new DataLabelStatus();
-        $dataLabels = new DataLabels();
-        $dataLabels->setDataLabels($dataLabelStatus);
-        $plotOptions = new PlotOptions();
-        $plotOptions->setPlotType($dataLabels);
-        $chartTooltip = new Tooltip();
-        $chartCredits = new ChartCredits();
-        $chartLegend = new ChartLegend();
-
-        $highchart = new Highcharts();
-        $highchart->setChart($chart);
-        $highchart->setTitle($chartTitle);
-        $highchart->setXAxis($chartXaxis);
-//    $highchart->yAxis = $yAxes;
-        $highchart->setTooltip($chartTooltip);
-        $highchart->setPlotOptions($plotOptions);
-        $highchart->setCredits($chartCredits);
-        $highchart->setLegend($chartLegend);
-        $highchart->setSeries($seriesData);
-
-        $variables['chart_type'] = 'highcharts';
-        $variables['content_attributes']['data-chart'][] = json_encode($highchart);
-        $variables['attributes']['id'][0] = $chartId;
-        $variables['attributes']['class'][] = 'charts-highchart';
+class Highchart extends AbstractChart {
+
+  /**
+   * Creates a JSON Object formatted for Highcharts to use
+   *
+   * @param $options
+   * @param array $categories
+   * @param array $seriesData
+   *
+   * @param array $attachmentDisplayOptions
+   *
+   * @return Highcharts object to be used by highcharts javascripts visualization framework
+   */
+  public function buildVariables($options, $categories = [], $seriesData = [], $attachmentDisplayOptions = [], &$variables, $chartId) {
+    $noAttachmentDisplays = count($attachmentDisplayOptions) === 0;
+
+    $chart = new Chart();
+    $typeOptions = $options['type'];
+    // @todo: make this so that it happens if any display uses donut.
+    if ($typeOptions == 'donut') {
+      $typeOptions = 'pie';
+      // Remove donut from seriesData.
+      foreach ($seriesData as $key => &$value) {
+        $value = str_replace('donut', 'pie', $value);
+      }
+      // Add innerSize to differentiate between donut and pie.
+      foreach ($seriesData as $key => &$value) {
+        $innerSize['showInLegend'] = 'true';
+        $innerSize['innerSize'] = '40%';
+        $chartPlacement = array_search($value, $seriesData);
+        $seriesData[$chartPlacement] = array_merge($innerSize, $seriesData[$chartPlacement]);
+      }
+    }
+    $chart->setType($typeOptions);
+
+    // Set chart width.
+    if (isset($options['width'])) {
+      $chart->setWidth($options['width']);
+    }
+
+    // Set chart height.
+    if (isset($options['height'])) {
+      $chart->setHeight($options['height']);
+    }
+
+    // Set chart title.
+    $chartTitle = new ChartTitle();
+    if (isset($options['title'])) {
+      $chartTitle->setText($options['title']);
+    }
+
+    $chartXaxis  = new Xaxis();
+    $chartLabels = new ChartLabel();
+
+    // Set x-axis label rotation.
+    if (isset($options['xaxis_labels_rotation'])) {
+      $chartLabels->setRotation($options['xaxis_labels_rotation']);
+    }
+
+    $chartXaxis->setCategories($categories);
+
+    // Set x-axis title.
+    $xAxisTitle = new XaxisTitle();
+    if (isset($options['xaxis_title'])) {
+      $xAxisTitle->setText($options['xaxis_title']);
+    }
+    $chartXaxis->setTitle($xAxisTitle);
+    $chartXaxis->setLabels($chartLabels);
+    $yaxisLabels = new YaxisLabel();
+    $chartYaxis = new Yaxis();
+    $yAxes = [];
+    $yAxisTitle = new YaxisTitle();
+    $yAxisTitle->setText($options['yaxis_title']);
+    if (!empty($options['yaxis_min'])) {
+      $chartYaxis->min = $options['yaxis_min'];
+    }
+    if (!empty($options['yaxis_max'])) {
+      $chartYaxis->max = $options['yaxis_max'];
     }
-}
\ No newline at end of file
+
+    $chartYaxis->setLabels($yaxisLabels);
+    $chartYaxis->setTitle($yAxisTitle);
+    array_push($yAxes, $chartYaxis);
+
+    // Chart libraries tend to support only one secondary axis.
+    if (!$noAttachmentDisplays && $attachmentDisplayOptions[0]['inherit_yaxis'] == 0) {
+      $chartYaxisSecondary = new Yaxis();
+      $yAxisTitleSecondary = new YaxisTitle();
+      $yAxisTitleSecondary->setText($attachmentDisplayOptions[0]['style']['options']['yaxis_title']);
+      $chartYaxisSecondary->setTitle($yAxisTitleSecondary);
+      $chartYaxisSecondary->setLabels($yaxisLabels);
+      $chartYaxisSecondary->opposite = 'true';
+      if (!empty($attachmentDisplayOptions[0]['style']['options']['yaxis_min'])) {
+        $chartYaxisSecondary->min = $attachmentDisplayOptions[0]['style']['options']['yaxis_min'];
+      }
+      if (!empty($attachmentDisplayOptions[0]['style']['options']['yaxis_max'])) {
+        $chartYaxisSecondary->max = $attachmentDisplayOptions[0]['style']['options']['yaxis_max'];
+      }
+      array_push($yAxes, $chartYaxisSecondary);
+    }
+    $dataLabelStatus = new DataLabelStatus();
+    $dataLabels = new DataLabels();
+    $dataLabels->setDataLabels($dataLabelStatus);
+    $plotOptions = new PlotOptions();
+    $plotOptions->setPlotType($dataLabels);
+    $chartTooltip = new Tooltip();
+    $chartCredits = new ChartCredits();
+    $chartLegend = new ChartLegend();
+
+    $highchart = new Highcharts();
+    $highchart->setChart($chart);
+    $highchart->setTitle($chartTitle);
+    $highchart->setXAxis($chartXaxis);
+    /* $highchart->yAxis = $yAxes; */
+    $highchart->setTooltip($chartTooltip);
+    $highchart->setPlotOptions($plotOptions);
+    $highchart->setCredits($chartCredits);
+    $highchart->setLegend($chartLegend);
+    $highchart->setSeries($seriesData);
+
+    $variables['chart_type'] = 'highcharts';
+    $variables['content_attributes']['data-chart'][] = json_encode($highchart);
+    $variables['attributes']['id'][0] = $chartId;
+    $variables['attributes']['class'][] = 'charts-highchart';
+  }
+
+}
diff --git a/modules/charts_highcharts/src/Settings/Highcharts/ChartCredits.php b/modules/charts_highcharts/src/Settings/Highcharts/ChartCredits.php
index a75386c..bf179d8 100644
--- a/modules/charts_highcharts/src/Settings/Highcharts/ChartCredits.php
+++ b/modules/charts_highcharts/src/Settings/Highcharts/ChartCredits.php
@@ -2,25 +2,38 @@
 
 namespace Drupal\charts_highcharts\Settings\Highcharts;
 
+/**
+ * Chart Credits.
+ */
 class ChartCredits implements \JsonSerializable {
+
   private $enabled = FALSE;
 
   /**
+   * Is Enabled.
+   *
    * @return boolean
+   *   Enabled.
    */
   public function isEnabled() {
     return $this->enabled;
   }
 
   /**
+   * Set Enabled.
+   *
    * @param boolean $enabled
+   *   Enabled.
    */
   public function setEnabled($enabled) {
     $this->enabled = $enabled;
   }
 
   /**
+   * Json Serialize.
+   *
    * @return array
+   *   Json Serialize.
    */
   public function jsonSerialize() {
     $vars = get_object_vars($this);
diff --git a/modules/charts_highcharts/src/Settings/Highcharts/ChartLabel.php b/modules/charts_highcharts/src/Settings/Highcharts/ChartLabel.php
index 7b65ae9..3d4995a 100644
--- a/modules/charts_highcharts/src/Settings/Highcharts/ChartLabel.php
+++ b/modules/charts_highcharts/src/Settings/Highcharts/ChartLabel.php
@@ -2,25 +2,38 @@
 
 namespace Drupal\charts_highcharts\Settings\Highcharts;
 
+/**
+ * Chart Label.
+ */
 class ChartLabel implements \JsonSerializable {
+
   private $rotation;
 
   /**
+   * Get Rotation.
+   *
    * @return mixed
+   *   Rotation.
    */
   public function getRotation() {
     return $this->rotation;
   }
 
   /**
+   * Set Rotation.
+   *
    * @param mixed $rotation
+   *   Rotation.
    */
   public function setRotation($rotation) {
     $this->rotation = (int)$rotation;
   }
 
   /**
+   * Json Serialize.
+   *
    * @return array
+   *   Json Serialize.
    */
   public function jsonSerialize() {
     $vars = get_object_vars($this);
diff --git a/modules/charts_highcharts/src/Settings/Highcharts/ChartLegend.php b/modules/charts_highcharts/src/Settings/Highcharts/ChartLegend.php
index 3c90933..2bf6f5b 100644
--- a/modules/charts_highcharts/src/Settings/Highcharts/ChartLegend.php
+++ b/modules/charts_highcharts/src/Settings/Highcharts/ChartLegend.php
@@ -2,7 +2,11 @@
 
 namespace Drupal\charts_highcharts\Settings\Highcharts;
 
+/**
+ * Chart Legend.
+ */
 class ChartLegend implements \JsonSerializable {
+
   private $layout = 'vertical';
   private $align = 'right';
   private $verticalAlign = 'top';
@@ -14,133 +18,190 @@ class ChartLegend implements \JsonSerializable {
   private $shadow = TRUE;
 
   /**
+   * Get Layout.
+   *
    * @return string
+   *   Layout.
    */
   public function getLayout() {
     return $this->layout;
   }
 
   /**
+   * Set Layout.
+   *
    * @param string $layout
+   *   Layout.
    */
   public function setLayout($layout) {
     $this->layout = $layout;
   }
 
   /**
+   * Get Align.
+   *
    * @return string
+   *   Align.
    */
   public function getAlign() {
     return $this->align;
   }
 
   /**
+   * Set Align.
+   *
    * @param string $align
+   *   Align.
    */
   public function setAlign($align) {
     $this->align = $align;
   }
 
   /**
+   * Get Vertical Align.
+   *
    * @return string
+   *   Vertical Align.
    */
   public function getVerticalAlign() {
     return $this->verticalAlign;
   }
 
   /**
+   * Set Vertical Align.
+   *
    * @param string $verticalAlign
+   *   Vertical Align.
    */
   public function setVerticalAlign($verticalAlign) {
     $this->verticalAlign = $verticalAlign;
   }
 
   /**
+   * Get X.
+   *
    * @return int
+   *   X.
    */
   public function getX() {
     return $this->x;
   }
 
   /**
+   * Set X.
+   *
    * @param int $x
+   *   X.
    */
   public function setX($x) {
     $this->x = $x;
   }
 
   /**
+   * Get Y.
+   *
    * @return int
+   *   Y.
    */
   public function getY() {
     return $this->y;
   }
 
   /**
+   * Set Y.
+   *
    * @param int $y
+   *   Y.
    */
   public function setY($y) {
     $this->y = $y;
   }
 
   /**
+   * Is Floating.
+   *
    * @return boolean
+   *   Floating.
    */
   public function isFloating() {
     return $this->floating;
   }
 
   /**
+   * Set Floating.
+   *
    * @param boolean $floating
+   *   Floating.
    */
   public function setFloating($floating) {
     $this->floating = $floating;
   }
 
   /**
+   * Get Border Width.
+   *
    * @return int
+   *   Border Width.
    */
   public function getBorderWidth() {
     return $this->borderWidth;
   }
 
   /**
+   * Set Border Width.
+   *
    * @param int $borderWidth
+   *   Border Width.
    */
   public function setBorderWidth($borderWidth) {
     $this->borderWidth = $borderWidth;
   }
 
   /**
+   * Get Background Color.
+   *
    * @return string
+   *   Background Color.
    */
   public function getBackgroundColor() {
     return $this->backgroundColor;
   }
 
   /**
+   * Set Background Color.
+   *
    * @param string $backgroundColor
+   *   Background Color.
    */
   public function setBackgroundColor($backgroundColor) {
     $this->backgroundColor = $backgroundColor;
   }
 
   /**
+   * Is Shadow.
+   *
    * @return boolean
+   *   Shadow.
    */
   public function isShadow() {
     return $this->shadow;
   }
 
   /**
+   * Set Shadow.
+   *
    * @param boolean $shadow
+   *   Shadow.
    */
   public function setShadow($shadow) {
     $this->shadow = $shadow;
   }
 
   /**
+   * Json Serialize.
+   *
    * @return array
+   *   Json Serialize.
    */
   public function jsonSerialize() {
     $vars = get_object_vars($this);
diff --git a/modules/charts_highcharts/src/Settings/Highcharts/ChartTitle.php b/modules/charts_highcharts/src/Settings/Highcharts/ChartTitle.php
index 726c25c..fe7ab6f 100644
--- a/modules/charts_highcharts/src/Settings/Highcharts/ChartTitle.php
+++ b/modules/charts_highcharts/src/Settings/Highcharts/ChartTitle.php
@@ -2,25 +2,38 @@
 
 namespace Drupal\charts_highcharts\Settings\Highcharts;
 
+/**
+ * Chart Title.
+ */
 class ChartTitle implements \JsonSerializable {
+
   private $text;
 
   /**
+   * Get Text.
+   *
    * @return mixed
+   *   Text.
    */
   public function getText() {
     return $this->text;
   }
 
   /**
+   * Set Text.
+   *
    * @param mixed $text
+   *   Text.
    */
   public function setText($text) {
     $this->text = $text;
   }
 
   /**
+   * Json Serialize.
+   *
    * @return array
+   *   Json Serialize.
    */
   public function jsonSerialize() {
     $vars = get_object_vars($this);
diff --git a/modules/charts_highcharts/src/Settings/Highcharts/DataLabelStatus.php b/modules/charts_highcharts/src/Settings/Highcharts/DataLabelStatus.php
index 3426d01..305c97a 100644
--- a/modules/charts_highcharts/src/Settings/Highcharts/DataLabelStatus.php
+++ b/modules/charts_highcharts/src/Settings/Highcharts/DataLabelStatus.php
@@ -2,25 +2,38 @@
 
 namespace Drupal\charts_highcharts\Settings\Highcharts;
 
+/**
+ * Data Label Status.
+ */
 class DataLabelStatus implements \JsonSerializable {
+
   private $enabled = TRUE;
 
   /**
+   * Is Enabled.
+   *
    * @return boolean
+   *   Enabled.
    */
   public function isEnabled() {
     return $this->enabled;
   }
 
   /**
+   * Set Enabled.
+   *
    * @param boolean $enabled
+   *   Enabled.
    */
   public function setEnabled($enabled) {
     $this->enabled = $enabled;
   }
 
   /**
+   * Json Serialize.
+   *
    * @return array
+   *   Json Serialize.
    */
   public function jsonSerialize() {
     $vars = get_object_vars($this);
diff --git a/modules/charts_highcharts/src/Settings/Highcharts/DataLabels.php b/modules/charts_highcharts/src/Settings/Highcharts/DataLabels.php
index 080ef48..76810b2 100644
--- a/modules/charts_highcharts/src/Settings/Highcharts/DataLabels.php
+++ b/modules/charts_highcharts/src/Settings/Highcharts/DataLabels.php
@@ -2,25 +2,38 @@
 
 namespace Drupal\charts_highcharts\Settings\Highcharts;
 
+/**
+ * Data Labels.
+ */
 class DataLabels implements \JsonSerializable {
+
   private $dataLabels;
 
   /**
+   * Get Data Labels.
+   *
    * @return mixed
+   *   Data Labels.
    */
   public function getDataLabels() {
     return $this->dataLabels;
   }
 
   /**
+   * Set Data Labels.
+   *
    * @param mixed $dataLabels
+   *   Data Labels.
    */
   public function setDataLabels($dataLabels) {
     $this->dataLabels = $dataLabels;
   }
 
   /**
+   * Json Serialize.
+   *
    * @return array
+   *   Json Serialize.
    */
   public function jsonSerialize() {
     $vars = get_object_vars($this);
diff --git a/modules/charts_highcharts/src/Settings/Highcharts/Highcharts.php b/modules/charts_highcharts/src/Settings/Highcharts/Highcharts.php
index 0234044..7d990dc 100644
--- a/modules/charts_highcharts/src/Settings/Highcharts/Highcharts.php
+++ b/modules/charts_highcharts/src/Settings/Highcharts/Highcharts.php
@@ -2,11 +2,15 @@
 
 namespace Drupal\charts_highcharts\Settings\Highcharts;
 
+/**
+ * Highcharts.
+ */
 class Highcharts implements \JsonSerializable {
+
   private $chart;
   private $title;
   private $xAxis;
-//  private $yAxis;
+  /* private $yAxis; */
   private $tooltip;
   private $plotOptions;
   private $legend;
@@ -15,147 +19,201 @@ class Highcharts implements \JsonSerializable {
   private $series;
 
   /**
+   * Get Chart.
+   *
    * @return mixed
+   *   Chart.
    */
   public function getChart() {
     return $this->chart;
   }
 
   /**
+   * Set Chart.
+   *
    * @param mixed $chart
+   *   Chart.
    */
   public function setChart($chart) {
     $this->chart = $chart;
   }
 
   /**
+   * Get Title.
+   *
    * @return mixed
+   *   Title.
    */
   public function getTitle() {
     return $this->title;
   }
 
   /**
+   * Set Title.
+   *
    * @param mixed $title
+   *   Title.
    */
   public function setTitle($title) {
     $this->title = $title;
   }
 
   /**
+   * Get X Axis.
+   *
    * @return mixed
+   *   X Axis.
    */
   public function getXAxis() {
     return $this->xAxis;
   }
 
   /**
+   * Set X Axis.
+   *
    * @param mixed $xAxis
+   *   X Axis.
    */
   public function setXAxis($xAxis) {
     $this->xAxis = $xAxis;
   }
 
-//  /**
-//   * @return mixed
-//   */
-//  public function getYAxis() {
-//    return $this->yAxis;
-//  }
-//
-//  /**
-//   * @param mixed $yAxis
-//   */
-//  public function setYAxis($yAxis) {
-//     $this->yAxis = $yAxis;
-//   }
+  /*
+  @return mixed
+  public function getYAxis() {
+    return $this->yAxis;
+  }
+  @param mixed $yAxis
+  public function setYAxis($yAxis) {
+    $this->yAxis = $yAxis;
+  }
+  */
 
   /**
+   * Get Tooltip.
+   *
    * @return mixed
+   *   Tooltip.
    */
   public function getTooltip() {
     return $this->tooltip;
   }
 
   /**
+   * Set Tooltip.
+   *
    * @param mixed $tooltip
+   *   Tooltip.
    */
   public function setTooltip($tooltip) {
     $this->tooltip = $tooltip;
   }
 
   /**
+   * Get Plot Options.
+   *
    * @return mixed
+   *   Plot Options.
    */
   public function getPlotOptions() {
     return $this->plotOptions;
   }
 
   /**
+   * Set Plot Options.
+   *
    * @param mixed $plotOptions
+   *   Plot Options.
    */
   public function setPlotOptions($plotOptions) {
     $this->plotOptions = $plotOptions;
   }
 
   /**
+   * Get Legend.
+   *
    * @return mixed
+   *   Legend.
    */
   public function getLegend() {
     return $this->legend;
   }
 
   /**
+   * Set Legend.
+   *
    * @param mixed $legend
+   *   Legend.
    */
   public function setLegend($legend) {
     $this->legend = $legend;
   }
 
   /**
+   * Get Credits.
+   *
    * @return mixed
+   *   Credits.
    */
   public function getCredits() {
     return $this->credits;
   }
 
   /**
+   * Set Credits.
+   *
    * @param mixed $credits
+   *   Credits.
    */
   public function setCredits($credits) {
     $this->credits = $credits;
   }
 
   /**
+   * Get Inner Size.
+   *
    * @return mixed
+   *   Inner Size.
    */
   public function getInnerSize() {
     return $this->innerSize;
   }
 
   /**
+   * Set Inner Size.
+   *
    * @param mixed $innerSize
+   *   Inner Size.
    */
   public function setInnerSize($innerSize) {
     $this->innerSize = $innerSize;
   }
 
   /**
+   * Get Series.
+   *
    * @return mixed
+   *   Series.
    */
   public function getSeries() {
     return $this->series;
   }
 
   /**
+   * Set Series.
+   *
    * @param mixed $series
+   *   Series.
    */
   public function setSeries($series) {
     $this->series = $series;
   }
 
   /**
+   * Json Serialize.
+   *
    * @return array
+   *   Json Serialize.
    */
   public function jsonSerialize() {
     $vars = get_object_vars($this);
diff --git a/modules/charts_highcharts/src/Settings/Highcharts/Label.php b/modules/charts_highcharts/src/Settings/Highcharts/Label.php
index dc94072..d9f2849 100644
--- a/modules/charts_highcharts/src/Settings/Highcharts/Label.php
+++ b/modules/charts_highcharts/src/Settings/Highcharts/Label.php
@@ -2,25 +2,38 @@
 
 namespace Drupal\charts_highcharts\Settings\Highcharts;
 
+/**
+ * Label.
+ */
 class Label implements \JsonSerializable {
+
   private $rotation;
 
   /**
+   * Get Rotation.
+   *
    * @return mixed
+   *   Rotation.
    */
   public function getRotation() {
     return $this->rotation;
   }
 
   /**
+   * Set Rotation.
+   *
    * @param mixed $rotation
+   *   Rotation.
    */
   public function setRotation($rotation) {
     $this->rotation = $rotation;
   }
 
   /**
+   * Json Serialize.
+   *
    * @return array
+   *   Json Serialize.
    */
   public function jsonSerialize() {
     $vars = get_object_vars($this);
diff --git a/modules/charts_highcharts/src/Settings/Highcharts/PlotOptions.php b/modules/charts_highcharts/src/Settings/Highcharts/PlotOptions.php
index 58d46df..344f9f2 100644
--- a/modules/charts_highcharts/src/Settings/Highcharts/PlotOptions.php
+++ b/modules/charts_highcharts/src/Settings/Highcharts/PlotOptions.php
@@ -2,25 +2,38 @@
 
 namespace Drupal\charts_highcharts\Settings\Highcharts;
 
+/**
+ * Plot Options.
+ */
 class PlotOptions implements \JsonSerializable {
+
   private $plotType;
 
   /**
+   * Get Plot Type.
+   *
    * @return mixed
+   *   Plot Type.
    */
   public function getPlotType() {
     return $this->plotType;
   }
 
   /**
+   * Set Plot Type.
+   *
    * @param mixed $plotType
+   *   Plot Type.
    */
   public function setPlotType($plotType) {
     $this->plotType = $plotType;
   }
 
   /**
+   * Json Serialize.
+   *
    * @return array
+   *   Json Serialize.
    */
   public function jsonSerialize() {
     $vars = get_object_vars($this);
diff --git a/modules/charts_highcharts/src/Settings/Highcharts/Tooltip.php b/modules/charts_highcharts/src/Settings/Highcharts/Tooltip.php
index e96c678..4f92ef6 100644
--- a/modules/charts_highcharts/src/Settings/Highcharts/Tooltip.php
+++ b/modules/charts_highcharts/src/Settings/Highcharts/Tooltip.php
@@ -2,25 +2,38 @@
 
 namespace Drupal\charts_highcharts\Settings\Highcharts;
 
+/**
+ * Tooltip.
+ */
 class Tooltip implements \JsonSerializable {
+
   private $valueSuffix = '';
 
   /**
+   * Get Value Suffix.
+   *
    * @return string
+   *   Value Suffix.
    */
   public function getValueSuffix() {
     return $this->valueSuffix;
   }
 
   /**
+   * Set Value Suffix.
+   *
    * @param string $valueSuffix
+   *   Value Suffix.
    */
   public function setValueSuffix($valueSuffix) {
     $this->valueSuffix = $valueSuffix;
   }
 
   /**
+   * Json Serialize.
+   *
    * @return array
+   *   Json Serialize.
    */
   public function jsonSerialize() {
     $vars = get_object_vars($this);
diff --git a/modules/charts_highcharts/src/Settings/Highcharts/Xaxis.php b/modules/charts_highcharts/src/Settings/Highcharts/Xaxis.php
index 65ddc15..d30a012 100644
--- a/modules/charts_highcharts/src/Settings/Highcharts/Xaxis.php
+++ b/modules/charts_highcharts/src/Settings/Highcharts/Xaxis.php
@@ -2,55 +2,80 @@
 
 namespace Drupal\charts_highcharts\Settings\Highcharts;
 
+/**
+ * X Axis.
+ */
 class Xaxis implements \JsonSerializable {
+
   private $categories = [];
   private $title;
   private $labels;
 
   /**
+   * Get Categories.
+   *
    * @return array
+   *   Categories.
    */
   public function getCategories() {
     return $this->categories;
   }
 
   /**
+   * Set Categories.
+   *
    * @param array $categories
+   *   Categories.
    */
   public function setCategories($categories) {
     $this->categories = $categories;
   }
 
   /**
+   * Get Title.
+   *
    * @return mixed
+   *   Title.
    */
   public function getTitle() {
     return $this->title;
   }
 
   /**
+   * Set Title.
+   *
    * @param mixed $title
+   *   Title.
    */
   public function setTitle($title) {
     $this->title = $title;
   }
 
   /**
+   * Get Labels.
+   *
    * @return mixed
+   *   Labels.
    */
   public function getLabels() {
     return $this->labels;
   }
 
   /**
+   * Set Labels.
+   *
    * @param mixed $labels
+   *   Labels.
    */
   public function setLabels($labels) {
     $this->labels = $labels;
   }
 
   /**
+   * Json Serialize.
+   *
    * @return array
+   *   Json Serialize.
    */
   public function jsonSerialize() {
     $vars = get_object_vars($this);
diff --git a/modules/charts_highcharts/src/Settings/Highcharts/XaxisTitle.php b/modules/charts_highcharts/src/Settings/Highcharts/XaxisTitle.php
index ae0ec66..264bf6b 100644
--- a/modules/charts_highcharts/src/Settings/Highcharts/XaxisTitle.php
+++ b/modules/charts_highcharts/src/Settings/Highcharts/XaxisTitle.php
@@ -2,26 +2,38 @@
 
 namespace Drupal\charts_highcharts\Settings\Highcharts;
 
+/**
+ * X Axis Title.
+ */
 class XaxisTitle extends ChartTitle implements \JsonSerializable {
 
   private $text;
 
   /**
+   * Get Text.
+   *
    * @return string
+   *   Text.
    */
   public function getText() {
     return $this->text;
   }
 
   /**
+   * Set Text.
+   *
    * @param string $text
+   *   Text.
    */
   public function setText($text) {
     $this->text = $text;
   }
 
   /**
+   * Json Serialize.
+   *
    * @return array
+   *   Json Serialize.
    */
   public function jsonSerialize() {
     $vars = get_object_vars($this);
diff --git a/modules/charts_highcharts/src/Settings/Highcharts/Yaxis.php b/modules/charts_highcharts/src/Settings/Highcharts/Yaxis.php
index e282b5c..90e2fa6 100644
--- a/modules/charts_highcharts/src/Settings/Highcharts/Yaxis.php
+++ b/modules/charts_highcharts/src/Settings/Highcharts/Yaxis.php
@@ -2,40 +2,59 @@
 
 namespace Drupal\charts_highcharts\Settings\Highcharts;
 
+/**
+ * Y Axis.
+ */
 class Yaxis implements \JsonSerializable {
+
   private $title;
   private $labels = '';
 
   /**
+   * Get Title.
+   *
    * @return mixed
+   *   Title.
    */
   public function getTitle() {
     return $this->title;
   }
 
   /**
+   * Set Title.
+   *
    * @param mixed $title
+   *   Title.
    */
   public function setTitle($title) {
     $this->title = $title;
   }
 
   /**
+   * Get Labels.
+   *
    * @return string
+   *   Labels.
    */
   public function getLabels() {
     return $this->labels;
   }
 
   /**
+   * Set Labels.
+   *
    * @param string $labels
+   *   Labels.
    */
   public function setLabels($labels) {
     $this->labels = $labels;
   }
 
   /**
+   * Json Serialize.
+   *
    * @return array
+   *   Json Serialize.
    */
   public function jsonSerialize() {
     $vars = get_object_vars($this);
diff --git a/modules/charts_highcharts/src/Settings/Highcharts/YaxisLabel.php b/modules/charts_highcharts/src/Settings/Highcharts/YaxisLabel.php
index b613b8e..0e6eac8 100644
--- a/modules/charts_highcharts/src/Settings/Highcharts/YaxisLabel.php
+++ b/modules/charts_highcharts/src/Settings/Highcharts/YaxisLabel.php
@@ -2,25 +2,38 @@
 
 namespace Drupal\charts_highcharts\Settings\Highcharts;
 
+/**
+ * Y Axis Label.
+ */
 class YaxisLabel implements \JsonSerializable {
+  
   private $overflow = 'justify';
 
   /**
-   * @param $overflow
+   * Set Overflow.
+   *
+   * @param mixed $overflow
+   *   Overflow.
    */
   public function setOverflow($overflow) {
     $this->overflow = $overflow;
   }
 
   /**
+   * Get Overflow.
+   *
    * @return string
+   *   Overflow.
    */
   public function getOverflow() {
     return $this->overflow;
   }
 
   /**
+   * Json Serialize.
+   *
    * @return array
+   *   Json Serialize.
    */
   public function jsonSerialize() {
     $vars = get_object_vars($this);
diff --git a/modules/charts_highcharts/src/Settings/Highcharts/YaxisTitle.php b/modules/charts_highcharts/src/Settings/Highcharts/YaxisTitle.php
index 964b062..924382a 100644
--- a/modules/charts_highcharts/src/Settings/Highcharts/YaxisTitle.php
+++ b/modules/charts_highcharts/src/Settings/Highcharts/YaxisTitle.php
@@ -2,26 +2,38 @@
 
 namespace Drupal\charts_highcharts\Settings\Highcharts;
 
+/**
+ * Y Axis Title.
+ */
 class YaxisTitle extends ChartTitle implements \JsonSerializable {
 
   private $text;
 
   /**
+   * Get Text.
+   *
    * @return string
+   *   Text.
    */
   public function getText() {
     return $this->text;
   }
 
   /**
+   * Set Text.
+   *
    * @param string $text
+   *   Text.
    */
   public function setText($text) {
     $this->text = $text;
   }
 
   /**
+   * Json Serialize.
+   *
    * @return array
+   *   Json Serialize.
    */
   public function jsonSerialize() {
     $vars = get_object_vars($this);
diff --git a/src/Charts/ChartsRenderInterface.php b/src/Charts/ChartsRenderInterface.php
index 8f4e82a..4c823e5 100644
--- a/src/Charts/ChartsRenderInterface.php
+++ b/src/Charts/ChartsRenderInterface.php
@@ -23,6 +23,6 @@ interface ChartsRenderInterface {
    * @param string $chartId
    *   Chart Id.
    */
-  public function chartsRenderCharts(array $options = [], array $categories = [], array $seriesData = [], array $attachmentDisplayOptions = [],array &$variables = [], $chartId = '');
+  public function chartsRenderCharts(array $options = [], array $categories = [], array $seriesData = [], array $attachmentDisplayOptions = [], array &$variables = [], $chartId = '');
 
 }
diff --git a/src/Charts/ModuleSelector.php b/src/Charts/ModuleSelector.php
index b25df8f..a677e7c 100644
--- a/src/Charts/ModuleSelector.php
+++ b/src/Charts/ModuleSelector.php
@@ -47,18 +47,18 @@ class ModuleSelector {
    * @return bool
    *   Module exist.
    */
-  public function moduleExists(){
-    return \Drupal::moduleHandler()->moduleExists('charts_'.$this->library);
+  public function moduleExists() {
+    return \Drupal::moduleHandler()->moduleExists('charts_' . $this->library);
   }
-  
+
   /**
    * Get class charts render.
-   * 
+   *
    * @return string
    *   Class charts render name.
    */
-  private function getClassChartsRender(){
-    return 'Drupal\charts_' . $this->library. '\Charts\\' . ucfirst($this->library) . 'ChartsRender';
+  private function getClassChartsRender() {
+    return 'Drupal\charts_' . $this->library . '\Charts\\' . ucfirst($this->library) . 'ChartsRender';
   }
 
   /**
@@ -67,7 +67,7 @@ class ModuleSelector {
    * @param array $variables
    *   Variables.
    */
-  public function buildVariables(array &$variables = []){
+  public function buildVariables(array &$variables = []) {
     $moduleChartsRenderer = $this->getClassChartsRender();
     if (class_exists($moduleChartsRenderer)) {
       $chartingModule = new $moduleChartsRenderer();
diff --git a/src/Form/ChartsConfigForm.php b/src/Form/ChartsConfigForm.php
index 7b1fcfc..5609507 100644
--- a/src/Form/ChartsConfigForm.php
+++ b/src/Form/ChartsConfigForm.php
@@ -166,7 +166,7 @@ class ChartsConfigForm extends ConfigFormBase {
    * @param array $field_options
    *   Field options.
    * @param array $parents
-   *   parents.
+   *   Parents.
    *
    * @return array
    *   Form.
@@ -216,7 +216,7 @@ class ChartsConfigForm extends ConfigFormBase {
         'class' => [
           'chart-type-radios',
           'container-inline',
-        ]
+        ],
       ],
       '#parents' => array_merge($parents, ['type']),
     ];
@@ -233,7 +233,7 @@ class ChartsConfigForm extends ConfigFormBase {
 
     if ($field_options) {
       $first_field = key($field_options);
-      // $form['fields']['#theme'] = 'charts_settings_fields';
+      /* $form['fields']['#theme'] = 'charts_settings_fields'; */
       $form['fields']['label_field'] = [
         '#type'          => 'radios',
         '#title'         => $this->t('Label field'),
@@ -401,7 +401,8 @@ class ChartsConfigForm extends ConfigFormBase {
         45 => $this->t('45°'),
         60 => $this->t('60°'),
         90 => $this->t('90°'),
-      ], // This is only shown on non-inverted charts.
+      ],
+      // This is only shown on non-inverted charts.
       '#attributes'    => ['class' => ['axis-inverted-hide']],
       '#default_value' => $options['xaxis_labels_rotation'],
       '#parents'       => array_merge($parents, ['xaxis_labels_rotation']),
@@ -497,7 +498,7 @@ class ChartsConfigForm extends ConfigFormBase {
         90 => $this->t('90°'),
       ],
       '#attributes'    => [
-        'class' => ['axis-inverted-show']
+        'class' => ['axis-inverted-show'],
       ],
       '#default_value' => $options['yaxis_labels_rotation'],
       '#parents'       => array_merge($parents, ['yaxis_labels_rotation']),
diff --git a/src/Plugin/chart/AbstractChart.php b/src/Plugin/chart/AbstractChart.php
old mode 100755
new mode 100644
index cc51fa0..a2422a9
--- a/src/Plugin/chart/AbstractChart.php
+++ b/src/Plugin/chart/AbstractChart.php
@@ -1,6 +1,7 @@
 <?php
 
 namespace Drupal\charts\Plugin\chart;
+
 use Drupal\Component\Plugin\PluginBase;
 use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
 use Drupal\Core\StringTranslation\StringTranslationTrait;
@@ -9,26 +10,34 @@ use Symfony\Component\DependencyInjection\ContainerInterface;
 /**
  * Base class Chart plugins.
  */
-abstract class AbstractChart extends PluginBase implements ChartInterface, ContainerFactoryPluginInterface{
-    use StringTranslationTrait;
-    /**
-     * {@inheritdoc}
-     */
-    public function __construct(array $configuration, $plugin_id, $plugin_definition)
-    {
-        parent::__construct($configuration, $plugin_id, $plugin_definition);
-    }
-    /**
-     * {@inheritdoc}
-     */
-    public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition){
-        return new static(
-            $configuration,
-            $plugin_id,
-            $plugin_definition
-        );
-    }
-    public function getChartName() {
-        return $this->pluginDefinition['name'];
-    }
-}
\ No newline at end of file
+abstract class AbstractChart extends PluginBase implements ChartInterface, ContainerFactoryPluginInterface {
+
+  use StringTranslationTrait;
+
+  /**
+   * {@inheritdoc}
+   */
+  public function __construct(array $configuration, $plugin_id, $plugin_definition) {
+    parent::__construct($configuration, $plugin_id, $plugin_definition);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
+    return new static(
+        $configuration, $plugin_id, $plugin_definition
+    );
+  }
+
+  /**
+   * Get Chart Name.
+   *
+   * @return string
+   *   Chart Name.
+   */
+  public function getChartName() {
+    return $this->pluginDefinition['name'];
+  }
+
+}
diff --git a/src/Plugin/views/display/ChartsPluginDisplayChart.php b/src/Plugin/views/display/ChartsPluginDisplayChart.php
index af2feea..f28461a 100644
--- a/src/Plugin/views/display/ChartsPluginDisplayChart.php
+++ b/src/Plugin/views/display/ChartsPluginDisplayChart.php
@@ -48,12 +48,13 @@ class ChartsPluginDisplayChart extends Attachment {
     $categories['attachment'] = [
       'title'  => t('Chart settings'),
       'column' => 'second',
-      'build'  => ['#weight' => -10,],
+      'build'  => ['#weight' => -10],
     ];
     $displays = array_filter($this->getOption('displays'));
     if (count($displays) > 1) {
       $attach_to = $this->t('Multiple displays');
-    } elseif (count($displays) == 1) {
+    }
+    elseif (count($displays) == 1) {
       $display = array_shift($displays);
       if ($display = $this->view->storage->getDisplay($display)) {
         $attach_to = $display['display_title'];
@@ -118,6 +119,7 @@ class ChartsPluginDisplayChart extends Attachment {
       case 'displays':
         $form_state->setValue($section, array_filter($form_state->getValue($section)));
         break;
+
       // @todo set isDefaulted to false by default.
       case 'inherit_arguments':
       case 'inherit_exposed_filters':
diff --git a/src/Plugin/views/style/ChartsPluginStyleChart.php b/src/Plugin/views/style/ChartsPluginStyleChart.php
index 96c2f28..98fc943 100644
--- a/src/Plugin/views/style/ChartsPluginStyleChart.php
+++ b/src/Plugin/views/style/ChartsPluginStyleChart.php
@@ -93,14 +93,13 @@ class ChartsPluginStyleChart extends StylePluginBase {
     $dataFieldsCounter = 0;
 
     foreach ($dataFields as $value) {
-      /**
-       * Skip title field no need to validate it and if data field is set add to dataFieldsValueState array state 1
-       * otherwise add to same array state 0
-       */
+      // Skip title field no need to validate it and if data field is set add to
+      // dataFieldsValueState array state 1 otherwise add to same array state 0.
       if ($dataFieldsCounter > 0) {
         if (empty($value)) {
           array_push($dataFieldsValueState, 0);
-        } else {
+        }
+        else {
           array_push($dataFieldsValueState, 1);
         }
       }
@@ -108,10 +107,9 @@ class ChartsPluginStyleChart extends StylePluginBase {
       $dataFieldsCounter++;
     }
 
-    /**
-     * If total sum of dataFieldsValueState is less than 1, then no dataFields were selected otherwise 1 or more selected
-     * total sum will be greater than 1
-     */
+    // If total sum of dataFieldsValueState is less than 1, then no dataFields 
+    // were selected otherwise 1 or more selected total sum will be greater
+    // than 1.
     if (array_sum($dataFieldsValueState) < 1) {
       $errors[] = $this->t('At least one data field must be selected in the chart configuration before this chart may be shown');
     }
@@ -164,7 +162,7 @@ class ChartsPluginStyleChart extends StylePluginBase {
       '#width'           => $this->options['width'],
       '#height'          => $this->options['height'],
       '#view'            => $this->view,
-      // Pass info about the actual view results to allow further processing
+      // Pass info about the actual view results to allow further processing.
       '#theme'           => 'views_view_charts',
     ];
     $chart_type_info = charts_get_type($this->options['type']);
@@ -185,9 +183,10 @@ class ChartsPluginStyleChart extends StylePluginBase {
         // Convert empty strings to NULL.
         if ($value === '') {
           $value = NULL;
-        } // Strip thousands placeholders if present, then cast to float.
+        }
         else {
-          $value = (float)str_replace([',', ' '], '', $value);
+          // Strip thousands placeholders if present, then cast to float.
+          $value = (float) str_replace([',', ' '], '', $value);
         }
         $data_row[] = $value;
         $data[] = $data_row;
@@ -203,7 +202,8 @@ class ChartsPluginStyleChart extends StylePluginBase {
         '#title' => $data_field['label'],
       ];
 
-    } else {
+    }
+    else {
       $chart['xaxis'] = [
         '#type'            => 'chart_xaxis',
         '#title'           => $this->options['xaxis_title'] ? $this->options['xaxis_title'] : FALSE,
@@ -254,9 +254,10 @@ class ChartsPluginStyleChart extends StylePluginBase {
             // Convert empty strings to NULL.
             if ($value === '') {
               $value = NULL;
-            } // Strip thousands placeholders if present, then cast to float.
+            }
             else {
-              $value = (float)str_replace([',', ' '], '', $value);
+              // Strip thousands placeholders if present, then cast to float.
+              $value = (float) str_replace([',', ' '], '', $value);
             }
             $chart[$series_key]['#data'][] = $value;
           }
@@ -268,7 +269,7 @@ class ChartsPluginStyleChart extends StylePluginBase {
     // Check if this display has any children charts that should be applied
     // on top of it.
     $children_displays = $this->getChildrenChartDisplays();
-    //contains the different subviews of the attachments
+    // Contains the different subviews of the attachments.
     $attachments = [];
     $service = \Drupal::service('charts.charts_attachment');
 
@@ -301,18 +302,19 @@ class ChartsPluginStyleChart extends StylePluginBase {
       }
 
       $subchart = $subview->style_plugin->render();
-      array_push($attachments, $subview); //add attachment views to attachments array
+      // Add attachment views to attachments array.
+      array_push($attachments, $subview);
       /*$subview->postExecute();
       unset($subview);*/
 
-      //     Create a secondary axis if needed.
+      // Create a secondary axis if needed.
       if ($this->view->displayHandlers->get($child_display)->options['inherit_yaxis'] !== '1' && isset($subchart['yaxis'])) {
         $chart['secondary_yaxis'] = $subchart['yaxis'];
         $chart['secondary_yaxis']['#opposite'] = TRUE;
       }
 
       // Merge in the child chart data.
-      //foreach (\Drupal::state()->getMultiple($subchart) as $key) {
+      /* foreach (\Drupal::state()->getMultiple($subchart) as $key) { */
       foreach (Element::children($subchart) as $key) {
         if ($subchart[$key]['#type'] === 'chart_data') {
           $chart[$key] = $subchart[$key];
@@ -339,7 +341,7 @@ class ChartsPluginStyleChart extends StylePluginBase {
    * @return bool
    *   Parent Display.
    */
-  function getParentChartDisplay() {
+  public function getParentChartDisplay() {
     $parent_display = FALSE;
 
     return $parent_display;
@@ -351,13 +353,13 @@ class ChartsPluginStyleChart extends StylePluginBase {
    * @return array
    *   Children Chart Display.
    */
-  function getChildrenChartDisplays() {
+  public function getChildrenChartDisplays() {
 
     $children_displays = $this->displayHandler->getAttachedDisplays();
     foreach ($children_displays as $key => $child) {
       $display_handler = $this->view->displayHandlers->get($child);
-      //unset disabled & non chart attachments.
-      if ((!$display_handler->isEnabled()) || (strstr($child,'chart_extension') == !TRUE)) {
+      // Unset disabled & non chart attachments.
+      if ((!$display_handler->isEnabled()) || (strstr($child, 'chart_extension') == !TRUE)) {
         unset($children_displays[$key]);
       }
     }
diff --git a/src/Services/ChartsSettingsService.php b/src/Services/ChartsSettingsService.php
index ed46eed..d5c093f 100644
--- a/src/Services/ChartsSettingsService.php
+++ b/src/Services/ChartsSettingsService.php
@@ -9,12 +9,12 @@ use Drupal\Core\Config\ConfigFactory;
  */
 class ChartsSettingsService implements ChartsSettingsServiceInterface {
 
-  //private $editableConfigName = 'charts.settings';
+  /* private $editableConfigName = 'charts.settings'; */
   private $configFactory;
 
   /**
    * Construct.
-   * 
+   *
    * @param \Drupal\Core\Config\ConfigFactory $config_factory
    *   Config factory.
    */
@@ -30,4 +30,4 @@ class ChartsSettingsService implements ChartsSettingsServiceInterface {
 
     return $config->get('charts_default_settings');
   }
-}
\ No newline at end of file
+}
diff --git a/src/Theme/ChartsInterface.php b/src/Theme/ChartsInterface.php
index d3fb36b..6b43398 100644
--- a/src/Theme/ChartsInterface.php
+++ b/src/Theme/ChartsInterface.php
@@ -10,8 +10,8 @@ interface ChartsInterface {
   /**
    * Used to define a single axis.
    *
-   * Constant used in hook_charts_type_info() to declare chart types with a single
-   * axis. For example a pie chart only has a single dimension.
+   * Constant used in hook_charts_type_info() to declare chart types with a 
+   * single axis. For example a pie chart only has a single dimension.
    */
   const CHARTS_SINGLE_AXIS = 'y_only';
 
diff --git a/src/Util/Util.php b/src/Util/Util.php
index e57817f..c2560c3 100644
--- a/src/Util/Util.php
+++ b/src/Util/Util.php
@@ -3,12 +3,15 @@
 namespace Drupal\charts\Util;
 
 use Drupal\views\ViewExecutable;
+use Drupal\Core\StringTranslation\StringTranslationTrait;
 
 /**
  * Util.
  */
 class Util {
 
+  use StringTranslationTrait;
+
   /**
    * Views Data.
    *
@@ -34,8 +37,8 @@ class Util {
       foreach ($labelValues as $fieldId => $rowDataValue) {
         $alter_text = $view->field[$labelField]->options['alter']['alter_text'];
         if ($alter_text) {
-            $text = $view->field[$labelField]->options['alter']['text'];
-            $tokenized_text = trim(str_replace("\n", '', strip_tags($view->field[$labelField]->tokenizeValue($text, $row_number))));
+          $text = $view->field[$labelField]->options['alter']['text'];
+          $tokenized_text = trim(str_replace("\n", '', strip_tags($view->field[$labelField]->tokenizeValue($text, $row_number))));
         }
         $rowData[$numberFields] = [
           'value'       => $view->field[$fieldId]->getValue($row),
@@ -74,7 +77,7 @@ class Util {
   /**
    * Creates chart data to be used later by visualization frameworks.
    *
-   * @param string $data
+   * @param array $data
    *   Data.
    *
    * @return array
@@ -114,8 +117,7 @@ class Util {
   public static function checkMissingLibrary($moduleName = '', $libraryPath = '') {
     $module_path = drupal_get_path('module', $moduleName);
     if (!file_exists($module_path . $libraryPath)) {
-      drupal_set_message(t('Charting libraries for ' . $moduleName . ' might 
-      not be installed. Run \'composer install\' for ' . $moduleName . ' sub-module.'), 'error');
+      drupal_set_message($this->t('Charting libraries for ' . $moduleName . ' might not be installed. Run \'composer install\' for ' . $moduleName . ' sub-module.'), 'error');
     }
   }
 
-- 
GitLab