added simple math and charts modules

web/modules/charts/src/Plugin/chart/Library/ChartBase.php

@@ -0,0 +1,152 @@
+<?php
+
+namespace Drupal\charts\Plugin\chart\Library;
+
+use Drupal\Component\Plugin\PluginBase;
+use Drupal\Component\Utility\NestedArray;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\StringTranslation\StringTranslationTrait;
+
+/**
+ * Base class Chart plugins.
+ */
+abstract class ChartBase extends PluginBase implements ChartInterface {
+
+  use StringTranslationTrait;
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getChartName(): string {
+    return $this->pluginDefinition['name'];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getSupportedChartTypes(): array {
+    $types = $this->pluginDefinition['types'];
+    $chart_plugin_id = $this->getPluginId();
+    // @todo Add dependency injection for the next major version.
+    \Drupal::moduleHandler()->alter('charts_plugin_supported_chart_types', $types, $chart_plugin_id);
+    return $types;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function isSupportedChartType(string $chart_type_id): bool {
+    $supported_chart_types = $this->getSupportedChartTypes();
+    return !$supported_chart_types || in_array($chart_type_id, $supported_chart_types);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getConfiguration(): array {
+    return $this->configuration;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setConfiguration(array $configuration): void {
+    $this->configuration = NestedArray::mergeDeep($this->defaultConfiguration(), $configuration);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function defaultConfiguration() {
+    return [];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
+    return $form;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function validateConfigurationForm(array &$form, FormStateInterface $form_state) {
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function submitConfigurationForm(array &$form, FormStateInterface $form_state) {
+  }
+
+  /**
+   * Gets defaults settings.
+   *
+   * @return array
+   *   The defaults settings.
+   */
+  public static function getDefaultSettings(): array {
+    return [
+      'type' => 'line',
+      'library' => NULL,
+      'grouping' => FALSE,
+      'fields' => [
+        'label' => NULL,
+        'data_providers' => NULL,
+      ],
+      'display' => [
+        'title' => '',
+        'title_position' => 'out',
+        'data_labels' => FALSE,
+        'data_markers' => TRUE,
+        'legend' => TRUE,
+        'legend_position' => 'right',
+        'background' => '',
+        'three_dimensional' => FALSE,
+        'polar' => FALSE,
+        'tooltips' => TRUE,
+        'tooltips_use_html' => FALSE,
+        'dimensions' => [
+          'width' => NULL,
+          'width_units' => '%',
+          'height' => NULL,
+          'height_units' => 'px',
+        ],
+        'gauge' => [
+          'green_to' => 100,
+          'green_from' => 85,
+          'yellow_to' => 85,
+          'yellow_from' => 50,
+          'red_to' => 50,
+          'red_from' => 0,
+          'max' => 100,
+          'min' => 0,
+        ],
+        'colors' => self::getDefaultColors(),
+      ],
+    ];
+  }
+
+  /**
+   * Gets the default hex colors.
+   *
+   * @return array
+   *   The hex colors.
+   */
+  public static function getDefaultColors(): array {
+    return [
+      '#2f7ed8',
+      '#0d233a',
+      '#8bbc21',
+      '#910000',
+      '#1aadce',
+      '#492970',
+      '#f28f43',
+      '#77a1e5',
+      '#c42525',
+      '#a6c96a',
+    ];
+  }
+
+}

web/modules/charts/src/Plugin/chart/Library/ChartInterface.php

@@ -0,0 +1,69 @@
+<?php
+
+namespace Drupal\charts\Plugin\chart\Library;
+
+use Drupal\Component\Plugin\ConfigurableInterface;
+use Drupal\Component\Plugin\PluginInspectionInterface;
+use Drupal\Core\Plugin\PluginFormInterface;
+
+/**
+ * Defines an interface for Chart plugins.
+ */
+interface ChartInterface extends PluginInspectionInterface, PluginFormInterface, ConfigurableInterface {
+
+  /**
+   * Used to define a single axis.
+   *
+   * Constant used in chartsTypeInfo() to declare chart types with a
+   * single axis. For example a pie chart only has a single dimension.
+   */
+  const SINGLE_AXIS = 'y_only';
+
+  /**
+   * Used to define a dual axis.
+   *
+   * Constant used in chartsTypeInfo() to declare chart types with a dual
+   * axes. Most charts use this type of data, meaning multiple categories each
+   * have multiple values. This type of data is usually represented as a table.
+   */
+  const DUAL_AXIS = 'xy';
+
+  /**
+   * Pre render.
+   *
+   * @param array $element
+   *   The element.
+   *
+   * @return array
+   *   The chart element.
+   */
+  public function preRender(array $element);
+
+  /**
+   * Return the name of the chart.
+   *
+   * @return string
+   *   Returns the name as a string.
+   */
+  public function getChartName();
+
+  /**
+   * Gets the supported chart types.
+   *
+   * @return array
+   *   The supported chart types.
+   */
+  public function getSupportedChartTypes();
+
+  /**
+   * Checks if a chart type is supported.
+   *
+   * @param string $chart_type_id
+   *   The chart type ID.
+   *
+   * @return bool
+   *   TRUE if the chart type is supported, FALSE otherwise.
+   */
+  public function isSupportedChartType(string $chart_type_id);
+
+}

web/modules/charts/src/Plugin/chart/Type/Type.php

@@ -0,0 +1,47 @@
+<?php
+
+namespace Drupal\charts\Plugin\chart\Type;
+
+use Drupal\Core\Plugin\PluginBase;
+
+/**
+ * Chart type class plugins.
+ */
+class Type extends PluginBase implements TypeInterface {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getId() {
+    return $this->pluginDefinition['id'];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getLabel() {
+    return $this->pluginDefinition['label'];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getAxis() {
+    return $this->pluginDefinition['axis'];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function isAxisInverted() {
+    return $this->pluginDefinition['axis_inverted'] == TRUE;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function supportStacking() {
+    return $this->pluginDefinition['stacking'] == TRUE;
+  }
+
+}

web/modules/charts/src/Plugin/chart/Type/TypeInterface.php

@@ -0,0 +1,50 @@
+<?php
+
+namespace Drupal\charts\Plugin\chart\Type;
+
+/**
+ * Defines an interface for Chart type plugins.
+ */
+interface TypeInterface {
+
+  /**
+   * Gets the chart type ID.
+   *
+   * @return string
+   *   The chart type ID.
+   */
+  public function getId();
+
+  /**
+   * Gets the chart type label.
+   *
+   * @return string
+   *   The chart type label.
+   */
+  public function getLabel();
+
+  /**
+   * Gets the chart type axis.
+   *
+   * @return string
+   *   The chart type axis.
+   */
+  public function getAxis();
+
+  /**
+   * Gets whether the chart type axis is inverted.
+   *
+   * @return bool
+   *   TRUE if the chart type axis is inverted, FALSE otherwise.
+   */
+  public function isAxisInverted();
+
+  /**
+   * Gets whether the chart type axis supports stacking.
+   *
+   * @return bool
+   *   TRUE if the chart type axis supports stacking, FALSE otherwise.
+   */
+  public function supportStacking();
+
+}