rocketship_paragraphs-5.0.0-alpha8/src/Form/SettingsForm.php

<?php

namespace Drupal\rocketship_paragraphs\Form;

use Drupal\Core\Form\ConfigFormBase;
use Drupal\Core\Form\FormStateInterface;

/**
 * Class SettingsForm.
 *
 * @package Drupal\rocketship_paragraphs\Form
 */
class SettingsForm extends ConfigFormBase {

  /**
   * {@inheritdoc}
   */
  protected function getEditableConfigNames() {
    return [
      'rocketship_paragraphs.settings',
    ];
  }

  /**
   * {@inheritdoc}
   */
  public function getFormId() {
    return 'rocketship_paragraphs_form';
  }

  /**
   * {@inheritdoc}
   */
  public function buildForm(array $form, FormStateInterface $form_state) {
    $config = $this->config('rocketship_paragraphs.settings');

    $form['rs_p_styling_settings'] = [
      '#type' => 'fieldset',
      '#title' => t('Styling settings'),
      '#open' => TRUE,
    ];

    $form['rs_p_styling_settings']['css_structural'] = [
      '#type' => 'checkbox',
      '#title' => t('Enable Structural CSS'),
      '#default_value' => $config->get('css_structural'),
      '#description' => t('Loads a CSS file with layout styling. If disabled, make sure you have your own theming for the layout options in place (eg. using a Dropsolid Rocketship theme).'),
    ];

    $form['rs_p_styling_settings']['css_colors'] = [
      '#type' => 'checkbox',
      '#title' => t('Enable Colors CSS'),
      '#default_value' => $config->get('css_colors'),
      '#description' => t('Loads a CSS file that adds styling for the generated color variants. If disabled, make sure you have your own theming for these color variants (eg. using a Dropsolid Rocketship theme).'),
    ];

    $form['rs_p_styling_settings']['backgrounds_full'] = [
      '#type' => 'checkbox',
      '#title' => t('Full-width backgrounds'),
      '#default_value' => $config->get('backgrounds_full'),
      '#description' => t('Do you want the paragraphs backgrounds to stretch the entire width of the site? Only works when frontend CSS is enabled and if there are no sidebars and the page container does not have overflow:hidden'),
    ];

    $form['color_variants_group'] = [
      '#type' => 'fieldset',
      '#title' => t('Color variants'),
      '#description' => t("Leave a variation's fields empty to delete it.<br>See the README for more information."),
      '#open' => TRUE,
      '#attributes' => ['id' => 'color-variants-wrapper'],
      '#tree' => TRUE,
    ];

    $variants = $config->get('color_variants');

    if (!isset($this->variationAmount)) {
      if (empty($variants)) {
        $this->variationAmount = 0;
      }
      else {
        $this->variationAmount = count($variants);
      }
    }

    $i = 0;
    while ($i < $this->variationAmount) {
      $form['color_variants_group'][$i] = [
        '#type' => 'fieldset',
        '#title' => t('Variant'),
        '#open' => TRUE,
      ];

      $form['color_variants_group'][$i]['name'] = [
        '#type' => 'textfield',
        '#title' => t('Name'),
        '#default_value' => isset($variants[$i]['name']) ? $variants[$i]['name'] : NULL,
        '#description' => t('A name to give this variant. It will be used to set a class on the paragraph'),
      ];

      $form['color_variants_group'][$i]['foreground'] = [
        '#type' => 'textfield',
        '#title' => t('Foreground color'),
        '#default_value' => isset($variants[$i]['foreground']) ? $variants[$i]['foreground'] : NULL,
        '#description' => t('Fill in a HEX value. This sets the color of the text and various other elements inside the paragraph'),
      ];

      $form['color_variants_group'][$i]['background'] = [
        '#type' => 'textfield',
        '#title' => t('Background color'),
        '#default_value' => isset($variants[$i]['background']) ? $variants[$i]['background'] : NULL,
        '#description' => t("Fill in a HEX value. This sets the color of the paragraph's background"),
      ];

      $form['color_variants_group'][$i]['link'] = [
        '#type' => 'textfield',
        '#title' => t('Link color'),
        '#default_value' => isset($variants[$i]['link']) ? $variants[$i]['link'] : NULL,
        '#description' => t('Fill in a HEX value. This sets the color of the links inside the paragraph'),
      ];

      $form['color_variants_group'][$i]['hover'] = [
        '#type' => 'textfield',
        '#title' => t('Link hover color'),
        '#default_value' => isset($variants[$i]['hover']) ? $variants[$i]['hover'] : NULL,
        '#description' => t('Fill in a HEX value. This sets the color of the link hovers inside the paragraph'),
      ];

      $i++;
    };

    $form['actions']['#type'] = 'actions';

    $form['actions']['add_item'] = [
      '#type' => 'submit',
      '#value' => $this->t('Add another variation'),
      '#submit' => ['::rpSettingsAddItem'],
      '#limit_validation_errors' => [],
      '#ajax' => [
        'callback' => '::rpSettingAjaxCallback',
        'wrapper' => 'color-variants-wrapper',
      ],
    ];

    $form['actions']['submit'] = [
      '#type' => 'submit',
      '#value' => $this->t('Save configuration'),
      '#button_type' => 'primary',
    ];

    // By default, render the form using system-config-form.html.twig.
    $form['#theme'] = 'system_config_form';

    return $form;
  }

  /**
   * Implements callback for add more event.
   *
   * @param array $form
   *   Form array.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   Form state.
   */
  public function rpSettingsAddItem(array $form, FormStateInterface $form_state) {
    $this->variationAmount++;
    $form_state->setRebuild();
  }

  /**
   * Returns the part of the form for the Ajax callback.
   *
   * @param array $form
   *   Form array.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   Form state.
   *
   * @return array
   *   Part of the form to return.
   */
  public function rpSettingAjaxCallback(array $form, FormStateInterface $form_state) {
    return $form['color_variants_group'];
  }

  /**
   * {@inheritdoc}
   */
  public function validateForm(array &$form, FormStateInterface $form_state) {
    parent::validateForm($form, $form_state);

    $variants = $form_state->getValue('color_variants_group');

    foreach ($variants as $idx => $values) {
      $empties = 0;
      foreach ($values as $key => $val) {
        if (empty($val)) {
          $empties++;
          continue;
        }
        if ($key === 'name') {
          continue;
        }
        $valid = preg_match('/^#([A-Fa-f0-9]{3}){1,2}\b$/', $val);
        if (!$valid) {
          $form_state->setError($form['color_variants_group'][$idx][$key], t('Invalid HEX code'));
        }
      }
      if ($empties !== 0 && $empties !== 5) {
        // They're not all empty or filled in.
        $form_state->setError($form['color_variants_group'][$idx], t('Please either leave all fields empty for a variation or fill in each field.'));
      }
    }
  }

  /**
   * {@inheritdoc}
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {
    $variants = $form_state->getValue('color_variants_group');

    // Strip empty variants.
    foreach ($variants as $idx => $values) {
      if (empty($values['name'])) {
        unset($variants[$idx]);
      }
    }
    // Re-index.
    $variants = array_values($variants);
    foreach ($variants as &$variant) {
      $variant['name'] = str_replace(['_', ' '], '-', $variant['name']);
      $variant['name'] = strtolower($variant['name']);
    }
    // Save the values.
    $config = $this->config('rocketship_paragraphs.settings');
    $config->set('css_structural', $form_state->getValue('css_structural'))
      ->save();
    $config->set('css_colors', $form_state->getValue('css_colors'))
      ->save();
    $config->set('backgrounds_full', $form_state->getValue('backgrounds_full'))
      ->save();
    $config->set('color_variants', $variants)
      ->save();

    // Generate CSS file.
    _rocketship_paragraphs_generate_background_css_file();

    parent::submitForm($form, $form_state);
  }

}