Move column options to layout yaml instead of separate class

src/Plugin/Layout/Uw2ColumnLayout.php

-<?php
-
-namespace Drupal\uw_cfg_common\Plugin\Layout;
-
-use Drupal\Core\Form\FormStateInterface;
-
-/**
- * A UW two column layout.
- */
-class Uw2ColumnLayout extends UwColumnLayoutBase {
-
-  /**
-   * {@inheritdoc}
-   */
-  public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
-
-    // Get Parents configuration form (which by default adds the Admin Label).
-    $form = parent::buildConfigurationForm($form, $form_state);
-
-    // Get the config for this layout.
-    $configuration = $this->getConfiguration();
-
-    // The options for the column widths.
-    $options = [
-      'even-split' => $this->t('Even split (50%, 50%)'),
-      'larger-left' => $this->t('Larger left (67%, 33%)'),
-      'larger-right' => $this->t('Larger right (33%, 67%)'),
-    ];
-
-    // The form element for the column widths.
-    $form['column_class'] = [
-      '#type' => 'select',
-      '#title' => $this->t('Column widths'),
-      '#default_value' => !empty($configuration['column_class']) ? $configuration['column_class'] : 'even-split',
-      '#options' => $options,
-    ];
-
-    return $form;
-  }
-
-}

src/Plugin/Layout/Uw3ColumnLayout.php

-<?php
-
-namespace Drupal\uw_cfg_common\Plugin\Layout;
-
-use Drupal\Core\Form\FormStateInterface;
-
-/**
- * A UW three column layout.
- */
-class Uw3ColumnLayout extends UwColumnLayoutBase {
-
-  /**
-   * {@inheritdoc}
-   */
-  public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
-
-    // Get Parents configuration form (which by default adds the Admin Label).
-    $form = parent::buildConfigurationForm($form, $form_state);
-
-    // Get the config for this layout.
-    $configuration = $this->getConfiguration();
-
-    // The options for the column widths.
-    $options = [
-      'even-split' => $this->t('Even split (33%, 34%, 33%)'),
-      'larger-left' => $this->t('Larger left (50%, 25%, 25%)'),
-      'larger-middle' => $this->t('Larger middle (25%, 50%, 25%)'),
-      'larger-right' => $this->t('Larger right (25%, 25%, 50%)'),
-      'legacy-38-38-24' => $this->t('Legacy (38%, 38%, 24%)'),
-      'legacy-24-38-38' => $this->t('Legacy (24%, 38%, 38%)'),
-    ];
-
-    // The form element for the column widths.
-    $form['column_class'] = [
-      '#type' => 'select',
-      '#title' => $this->t('Column widths'),
-      '#default_value' => !empty($configuration['column_class']) ? $configuration['column_class'] : 'even-split',
-      '#options' => $options,
-    ];
-
-    return $form;
-  }
-
-}

src/Plugin/Layout/Uw4ColumnLayout.php

-<?php
-
-namespace Drupal\uw_cfg_common\Plugin\Layout;
-
-use Drupal\Core\Form\FormStateInterface;
-
-/**
- * A UW four column layout.
- */
-class Uw4ColumnLayout extends UwColumnLayoutBase {
-
-  /**
-   * {@inheritdoc}
-   */
-  public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
-
-    // Get Parents configuration form (which by default adds the Admin Label).
-    $form = parent::buildConfigurationForm($form, $form_state);
-
-    // Get the config for this layout.
-    $configuration = $this->getConfiguration();
-
-    // The options for the column widths.
-    $options = [
-      'even-split' => $this->t('Even split (25%, 25%, 25%, 25%)'),
-      'larger-left' => $this->t('Larger left (50%, 16.67%, 16.67%, 16.67%)'),
-      'larger-second' => $this->t('Larger second (16.67%, 50%, 16.67%, 16.67%)'),
-      'larger-third' => $this->t('Larger third (16.67%, 16.67%, 50%, 16.67%)'),
-      'larger-right' => $this->t('Larger right (16.67%, 16.67%, 16.67%, 50%)'),
-      'legacy-23-27-27-23' => $this->t('Legacy (23%, 27%, 27%, 23%)'),
-    ];
-
-    // The form element for the column widths.
-    $form['column_class'] = [
-      '#type' => 'select',
-      '#title' => $this->t('Column widths'),
-      '#default_value' => !empty($configuration['column_class']) ? $configuration['column_class'] : 'even-split',
-      '#options' => $options,
-    ];
-
-    return $form;
-  }
-
-}

src/Plugin/Layout/Uw5ColumnLayout.php

-<?php
-
-namespace Drupal\uw_cfg_common\Plugin\Layout;
-
-use Drupal\Core\Form\FormStateInterface;
-
-/**
- * A UW four column layout.
- */
-class Uw5ColumnLayout extends UwColumnLayoutBase {
-
-  /**
-   * {@inheritdoc}
-   */
-  public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
-
-    // Get Parents configuration form (which by default adds the Admin Label).
-    $form = parent::buildConfigurationForm($form, $form_state);
-
-    // Get the config for this layout.
-    $configuration = $this->getConfiguration();
-
-    // The options for the column widths.
-    $options = [
-      'even-split' => $this->t('Even split (20%, 20%, 20%, 20%, 20%)'),
-      'larger-left' => $this->t('Larger left (40%, 15%, 15%, 15%, 15%)'),
-      'larger-second' => $this->t('Larger second (15%, 40%, 15%, 15%, 15%)'),
-      'larger-third' => $this->t('Larger third (15%, 15%, 40%, 15%, 15%)'),
-      'larger-fourth' => $this->t('Larger fourth (15%, 15%, 15%, 40%, 15%)'),
-      'larger-right' => $this->t('Larger right (15%, 15%, 15%, 15%, 40%)'),
-      'legacy-23-19-19-19-20' => $this->t('Legacy (23%, 19%, 19%, 19%, 20%)'),
-    ];
-
-    // The form element for the column widths.
-    $form['column_class'] = [
-      '#type' => 'select',
-      '#title' => $this->t('Column widths'),
-      '#default_value' => !empty($configuration['column_class']) ? $configuration['column_class'] : 'even-split',
-      '#options' => $options,
-    ];
-
-    return $form;
-  }
-
-}

src/Plugin/Layout/UwColumnLayoutBase.php

@@ -11,6 +11,30 @@ use Drupal\Core\Plugin\PluginFormInterface;
  */
 class UwColumnLayoutBase extends LayoutDefault implements PluginFormInterface {
 
+  /**
+   * {@inheritdoc}
+   */
+  public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
+
+    // Get Parents configuration form (which by default adds the Admin Label).
+    $form = parent::buildConfigurationForm($form, $form_state);
+
+    // Get the config for this layout.
+    $configuration = $this->getConfiguration();
+
+    // The options for the column widths.
+    $columnOptions = $this->getColumnOptions();
+
+    // The form element for the column widths.
+    $form['column_class'] = [
+      '#type' => 'select',
+      '#title' => $this->t('Column widths'),
+      '#default_value' => !empty($configuration['column_class']) ? $configuration['column_class'] : $columnOptions['default'],
+      '#options' => $columnOptions['columns'],
+    ];
+
+    return $form;
+  }
   /**
    * {@inheritdoc}
    */
@@ -42,4 +66,14 @@ class UwColumnLayoutBase extends LayoutDefault implements PluginFormInterface {
 
     return $build;
   }
+  /**
+   *  Helper function to get column options defined in *.layout.yml file
+   *
+   * @return array[]
+   *   an array containing string options and the default column.
+   */
+  public function getColumnOptions() {
+     return $this->getPluginDefinition()->get('column_options');
+  }
+
 }

src/Plugin/Layout/UwInvertedLLeftLayout.php

-<?php
-
-namespace Drupal\uw_cfg_common\Plugin\Layout;
-
-use Drupal\Core\Form\FormStateInterface;
-
-/**
- * A UW Inverted L Left layout.
- */
-class UwInvertedLLeftLayout extends UwColumnLayoutBase {
-
-  /**
-   * {@inheritdoc}
-   */
-  public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
-
-    // Get Parents configuration form (which by default adds the Admin Label).
-    $form = parent::buildConfigurationForm($form, $form_state);
-
-    // Get the config for this layout.
-    $configuration = $this->getConfiguration();
-
-    // The options for the column widths.
-    $options = [
-      'even-split' => $this->t('Even split (50%, 50%)'),
-      'larger-left' => $this->t('Larger left (33%, 67%)'),
-      'larger-right' => $this->t('Larger right (67%, 33%)'),
-    ];
-
-    // The form element for the column widths.
-    $form['column_class'] = [
-      '#type' => 'select',
-      '#title' => $this->t('Column widths for top row'),
-      '#default_value' => !empty($configuration['column_class']) ? $configuration['column_class'] : 'even-split',
-      '#options' => $options,
-    ];
-
-    return $form;
-  }
-
-}

src/Plugin/Layout/UwInvertedLRightLayout.php

-<?php
-
-namespace Drupal\uw_cfg_common\Plugin\Layout;
-
-use Drupal\Core\Form\FormStateInterface;
-
-/**
- * A UW Inverted L Right layout.
- */
-class UwInvertedLRightLayout extends UwColumnLayoutBase {
-
-  /**
-   * {@inheritdoc}
-   */
-  public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
-
-    // Get Parents configuration form (which by default adds the Admin Label).
-    $form = parent::buildConfigurationForm($form, $form_state);
-
-    // Get the config for this layout.
-    $configuration = $this->getConfiguration();
-
-    // The options for the column widths.
-    $options = [
-      'even-split' => $this->t('Even split (50%, 50%)'),
-      'larger-left' => $this->t('Larger left (33%, 67%)'),
-      'larger-right' => $this->t('Larger right (67%, 33%)'),
-    ];
-
-    // The form element for the column widths.
-    $form['column_class'] = [
-      '#type' => 'select',
-      '#title' => $this->t('Column widths for top row'),
-      '#default_value' => !empty($configuration['column_class']) ? $configuration['column_class'] : 'even-split',
-      '#options' => $options,
-    ];
-
-    return $form;
-  }
-
-}

uw_cfg_common.layouts.yml

-uw_1_column:
-  label: 'One column'
-  category: 'UW layouts'
-  library: uw_cfg_common/uw_layout_1_col
-  template: layouts/uw-1-col/layout--uw-1-col
-  default_region: first
-  regions:
-    first:
-      label: One
-  icon_map:
-    - [first]
-uw_2_column:
-  label: 'Two columns'
-  category: 'UW layouts'
-  class: '\Drupal\uw_cfg_common\Plugin\Layout\Uw2ColumnLayout'
-  library: uw_cfg_common/uw_layout_2_col
-  template: layouts/uw-2-col/layout--uw-2-col
-  default_region: first
-  regions:
-    first:
-      label: First
-    second:
-      label: Second
-  icon_map:
-    - [first, second]
-uw_3_column:
-  label: 'Three columns'
-  category: 'UW layouts'
-  class: '\Drupal\uw_cfg_common\Plugin\Layout\Uw3ColumnLayout'
-  library: uw_cfg_common/uw_layout_3_col
-  template: layouts/uw-3-col/layout--uw-3-col
-  default_region: first
-  regions:
-    first:
-      label: First
-    second:
-      label: Second
-    third:
-      label: Third
-  icon_map:
-    - [first, second, third]
-uw_4_column:
-  label: 'Four columns'
-  category: 'UW layouts'
-  class: '\Drupal\uw_cfg_common\Plugin\Layout\Uw4ColumnLayout'
-  library: uw_cfg_common/uw_layout_4_col
-  template: layouts/uw-4-col/layout--uw-4-col
-  default_region: first
-  regions:
-    first:
-      label: First
-    second:
-      label: Second
-    third:
-      label: Third
-    fourth:
-      label: Fourth
-  icon_map:
-    - [first, second, third, fourth]
-uw_5_column:
-  label: 'Five columns'
-  category: 'UW layouts'
-  class: '\Drupal\uw_cfg_common\Plugin\Layout\Uw5ColumnLayout'
-  library: uw_cfg_common/uw_layout_5_col
-  template: layouts/uw-5-col/layout--uw-5-col
-  default_region: first
-  regions:
-    first:
-      label: First
-    second:
-      label: Second
-    third:
-      label: Third
-    fourth:
-      label: Fourth
-    fifth:
-      label: Fifth
-  icon_map:
-    - [first, second, third, fourth, fifth]
-uw_inverted_l_right:
-  label: 'Inverted "L" - right'
-  category: 'UW layouts'
-  class: '\Drupal\uw_cfg_common\Plugin\Layout\UwInvertedLRightLayout'
-  library: uw_cfg_common/uw_layout_inverted_l_right
-  template: layouts/uw-inverted-l-right/layout--uw-inverted-l-right
-  default_region: first
-  regions:
-    first:
-      label: First
-    second:
-      label: Second
-    third:
-      label: Third
-    fourth:
-      label: Fourth
-  icon_map:
-    - [first, second, fourth]
-    - [third, third, fourth]
-uw_inverted_l_left:
-  label: 'Inverted "L" - left'
-  category: 'UW layouts'
-  class: '\Drupal\uw_cfg_common\Plugin\Layout\UwInvertedLLeftLayout'
-  library: uw_cfg_common/uw_layout_inverted_l_left
-  template: layouts/uw-inverted-l-left/layout--uw-inverted-l-left
-  default_region: first
-  regions:
-    first:
-      label: First
-    second:
-      label: Second
-    third:
-      label: Third
-    fourth:
-      label: Fourth
-  icon_map:
-    - [first, second, third]
-    - [first, fourth, fourth]
+uw_1_column:
+  label: 'One column'
+  category: 'UW layouts'
+  library: uw_cfg_common/uw_layout_1_col
+  template: layouts/uw-1-col/layout--uw-1-col
+  default_region: first
+  regions:
+    first:
+      label: One
+  icon_map:
+    - [first]
+uw_2_column:
+  label: 'Two columns'
+  category: 'UW layouts'
+  class: '\Drupal\uw_cfg_common\Plugin\Layout\UwColumnLayoutBase'
+  library: uw_cfg_common/uw_layout_2_col
+  template: layouts/uw-2-col/layout--uw-2-col
+  default_region: first
+  regions:
+    first:
+      label: First
+    second:
+      label: Second
+  icon_map:
+    - [first, second]
+  column_options:
+    columns:
+      even-split: 'Even split (50%, 50%)'
+      larger-left: 'Larger left (67%, 33%)'
+      larger-right: 'Larger right (33%, 67%)'
+    default: 'even-split'
+uw_3_column:
+  label: 'Three columns'
+  category: 'UW layouts'
+  class: '\Drupal\uw_cfg_common\Plugin\Layout\UwColumnLayoutBase'
+  library: uw_cfg_common/uw_layout_3_col
+  template: layouts/uw-3-col/layout--uw-3-col
+  default_region: first
+  regions:
+    first:
+      label: First
+    second:
+      label: Second
+    third:
+      label: Third
+  icon_map:
+    - [first, second, third]
+  column_options:
+    columns:
+      even-split: 'Even split (33%, 34%, 33%)'
+      larger-left: 'Larger left (50%, 25%, 25%)'
+      larger-middle: 'Larger middle (25%, 50%, 25%)'
+      larger-right: 'Larger right (25%, 25%, 50%)'
+      legacy-38-38-24: 'Legacy (38%, 38%, 24%)'
+      legacy-24-38-38: 'Legacy (24%, 38%, 38%)'
+    default: 'even-split'
+uw_4_column:
+  label: 'Four columns'
+  category: 'UW layouts'
+  class: '\Drupal\uw_cfg_common\Plugin\Layout\UwColumnLayoutBase'
+  library: uw_cfg_common/uw_layout_4_col
+  template: layouts/uw-4-col/layout--uw-4-col
+  default_region: first
+  regions:
+    first:
+      label: First
+    second:
+      label: Second
+    third:
+      label: Third
+    fourth:
+      label: Fourth
+  icon_map:
+    - [first, second, third, fourth]
+  column_options:
+    columns:
+      even-split': 'Even split (25%, 25%, 25%, 25%)'
+      larger-left': 'Larger left (50%, 16.67%, 16.67%, 16.67%)'
+      larger-second': 'Larger second (16.67%, 50%, 16.67%, 16.67%)'
+      larger-third': 'Larger third (16.67%, 16.67%, 50%, 16.67%)'
+      larger-right': 'Larger right (16.67%, 16.67%, 16.67%, 50%)'
+      legacy-23-27-27-23': 'Legacy (23%, 27%, 27%, 23%)'
+    default: 'even-split'
+uw_5_column:
+  label: 'Five columns'
+  category: 'UW layouts'
+  class: '\Drupal\uw_cfg_common\Plugin\Layout\UwColumnLayoutBase'
+  library: uw_cfg_common/uw_layout_5_col
+  template: layouts/uw-5-col/layout--uw-5-col
+  default_region: first
+  regions:
+    first:
+      label: First
+    second:
+      label: Second
+    third:
+      label: Third
+    fourth:
+      label: Fourth
+    fifth:
+      label: Fifth
+  icon_map:
+    - [first, second, third, fourth, fifth]
+  column_options:
+    columns:
+      even-split': 'Even split (20%, 20%, 20%, 20%, 20%)'
+      larger-left': 'Larger left (40%, 15%, 15%, 15%, 15%)'
+      larger-second': 'Larger second (15%, 40%, 15%, 15%, 15%)'
+      larger-third': 'Larger third (15%, 15%, 40%, 15%, 15%)'
+      larger-fourth': 'Larger fourth (15%, 15%, 15%, 40%, 15%)'
+      larger-right': 'Larger right (15%, 15%, 15%, 15%, 40%)'
+      legacy-23-19-19-19-20': 'Legacy (23%, 19%, 19%, 19%, 20%)'
+    default: 'even-split'
+uw_inverted_l_right:
+  label: 'Inverted "L" - right'
+  category: 'UW layouts'
+  class: '\Drupal\uw_cfg_common\Plugin\Layout\UwColumnLayoutBase'
+  library: uw_cfg_common/uw_layout_inverted_l_right
+  template: layouts/uw-inverted-l-right/layout--uw-inverted-l-right
+  default_region: first
+  regions:
+    first:
+      label: First
+    second:
+      label: Second
+    third:
+      label: Third
+    fourth:
+      label: Fourth
+  icon_map:
+    - [first, second, fourth]
+    - [third, third, fourth]
+  column_options:
+    columns:
+      even-split: 'Even split (50%, 50%)'
+      larger-left: 'Larger left (67%, 33%)'
+      larger-right: 'Larger right (33%, 67%)'
+    default: 'even-split'
+uw_inverted_l_left:
+  label: 'Inverted "L" - left'
+  category: 'UW layouts'
+  class: '\Drupal\uw_cfg_common\Plugin\Layout\UwColumnLayoutBase'
+  library: uw_cfg_common/uw_layout_inverted_l_left
+  template: layouts/uw-inverted-l-left/layout--uw-inverted-l-left
+  default_region: first
+  regions:
+    first:
+      label: First
+    second:
+      label: Second
+    third:
+      label: Third
+    fourth:
+      label: Fourth
+  icon_map:
+    - [first, second, third]
+    - [first, fourth, fourth]
+  column_options:
+    columns:
+      even-split: 'Even split (50%, 50%)'
+      larger-left: 'Larger left (67%, 33%)'
+      larger-right: 'Larger right (33%, 67%)'
+    default: 'even-split'