PhotoswipeFieldFormatter.php in PhotoSwipe 8.2

Namespace

Drupal\photoswipe\Plugin\Field\FieldFormatter

File

src/Plugin/Field/FieldFormatter/PhotoswipeFieldFormatter.php

<?php

namespace Drupal\photoswipe\Plugin\Field\FieldFormatter;

use Drupal\Core\Field\FieldDefinitionInterface;
use Drupal\Core\Field\FieldItemListInterface;
use Drupal\Core\Field\FormatterBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\image\Entity\ImageStyle;

/**
 * Plugin implementation of the 'photoswipe_field_formatter' formatter.
 *
 * @FieldFormatter(
 *   id = "photoswipe_field_formatter",
 *   label = @Translation("Photoswipe"),
 *   field_types = {
 *     "entity_reference",
 *     "image"
 *   }
 * )
 */
class PhotoswipeFieldFormatter extends FormatterBase {

  /**
   * {@inheritdoc}
   */
  public static function defaultSettings() {
    return [
      'photoswipe_node_style_first' => '',
      'photoswipe_node_style' => '',
      'photoswipe_image_style' => '',
      'photoswipe_reference_image_field' => '',
      'photoswipe_caption' => '',
      'photoswipe_caption_custom' => '',
      'photoswipe_view_mode' => '',
    ] + parent::defaultSettings();
  }

  /**
   * {@inheritdoc}
   */
  public function settingsForm(array $form, FormStateInterface $form_state) {
    $image_styles = image_style_options(FALSE);
    $image_styles_hide = $image_styles;
    $image_styles_hide['hide'] = $this
      ->t('Hide (do not display image)');
    $element['photoswipe_node_style_first'] = [
      '#title' => $this
        ->t('Node image style for first image'),
      '#type' => 'select',
      '#default_value' => $this
        ->getSetting('photoswipe_node_style_first'),
      '#empty_option' => $this
        ->t('No special style.'),
      '#options' => $image_styles_hide,
      '#description' => $this
        ->t('Image style to use in the content for the first image.'),
    ];
    $element['photoswipe_node_style'] = [
      '#title' => $this
        ->t('Node image style'),
      '#type' => 'select',
      '#default_value' => $this
        ->getSetting('photoswipe_node_style'),
      '#empty_option' => $this
        ->t('None (original image)'),
      '#options' => $image_styles_hide,
      '#description' => $this
        ->t('Image style to use in the node.'),
    ];
    $element['photoswipe_image_style'] = [
      '#title' => $this
        ->t('Photoswipe image style'),
      '#type' => 'select',
      '#default_value' => $this
        ->getSetting('photoswipe_image_style'),
      '#empty_option' => $this
        ->t('None (original image)'),
      '#options' => $image_styles,
      '#description' => $this
        ->t('Image style to use in the Photoswipe.'),
    ];

    // Set our caption options.
    $caption_options = [
      'title' => $this
        ->t('Image title tag'),
      'alt' => $this
        ->t('Image alt tag'),
      'node_title' => $this
        ->t('Entity title'),
      'custom' => $this
        ->t('Custom (with tokens)'),
    ];
    $element = $this
      ->addEntityReferenceSettings($element);

    // Add the other parent entity fields as options.
    if (isset($form['#fields'])) {
      foreach ($form['#fields'] as $parent_field) {
        if ($parent_field != $this->fieldDefinition
          ->getName()) {
          $caption_options[$parent_field] = $parent_field;
        }
      }
    }
    $element['photoswipe_caption'] = [
      '#title' => $this
        ->t('Photoswipe image caption'),
      '#type' => 'select',
      '#default_value' => $this
        ->getSetting('photoswipe_caption'),
      '#options' => $caption_options,
      '#description' => $this
        ->t('Field that should be used for the caption.'),
    ];
    $element['photoswipe_caption_custom'] = [
      '#title' => $this
        ->t('Custom caption'),
      '#type' => 'textarea',
      '#default_value' => $this
        ->getSetting('photoswipe_caption_custom'),
      '#states' => [
        'visible' => [
          ':input[name$="[settings][photoswipe_caption]"]' => [
            'value' => 'custom',
          ],
        ],
      ],
    ];
    if (\Drupal::moduleHandler()
      ->moduleExists('token')) {
      $element['photoswipe_token_caption'] = [
        '#type' => 'fieldset',
        '#title' => t('Replacement patterns'),
        '#theme' => 'token_tree_link',
        // A KLUDGE! Need to figure out current entity type.
        // in both entity display and views contexts.
        '#token_types' => [
          'file',
          'node',
        ],
        '#states' => [
          'visible' => [
            ':input[name$="[settings][photoswipe_caption]"]' => [
              'value' => 'custom',
            ],
          ],
        ],
      ];
    }
    else {
      $element['photoswipe_token_caption'] = [
        '#type' => 'fieldset',
        '#title' => $this
          ->t('Replacement patterns'),
        '#description' => '<strong class="error">' . $this
          ->t('For token support the <a href="@token_url">token module</a> must be installed.', [
          '@token_url' => 'http://drupal.org/project/token',
        ]) . '</strong>',
        '#states' => [
          'visible' => [
            ':input[name$="[settings][photoswipe_caption]"]' => [
              'value' => 'custom',
            ],
          ],
        ],
      ];
    }

    // Add the current view mode so we can control view mode for node fields.
    $element['photoswipe_view_mode'] = [
      '#type' => 'hidden',
      '#value' => $this->viewMode,
    ];
    return $element + parent::settingsForm($form, $form_state);
  }

  /**
   * Adds extra settings related when dealing with an entity reference.
   *
   * @param array $element
   *   The settings form structure of this formatter.
   *
   * @return array
   *   The modified settings form structure of this formatter.
   */
  private function addEntityReferenceSettings(array $element) {
    if ($this->fieldDefinition
      ->getType() !== 'entity_reference') {
      return $element;
    }
    $target_type = $this->fieldDefinition
      ->getSetting('target_type');
    $target_bundles = $this->fieldDefinition
      ->getSetting('handler_settings')['target_bundles'];

    /* @var $fields FieldDefinitionInterface[] */
    $fields = [];
    foreach ($target_bundles as $bundle) {
      $fields += \Drupal::service('entity_field.manager')
        ->getFieldDefinitions($target_type, $bundle);
    }
    $fields = array_filter($fields, function (FieldDefinitionInterface $field) {
      return $field
        ->getType() === 'image' && $field
        ->getName() !== 'thumbnail';
    });
    $field_options = [];
    foreach ($fields as $name => $field) {
      $field_options[$name] = $field
        ->getName();
    }
    $element['photoswipe_reference_image_field'] = [
      '#title' => $this
        ->t('Image field of the referenced entity'),
      '#type' => 'select',
      '#default_value' => $this
        ->getSetting('photoswipe_reference_image_field'),
      '#options' => $field_options,
      '#description' => $this
        ->t('Field that contains the image to be used.'),
    ];
    return $element;
  }

  /**
   * {@inheritdoc}
   */
  public function settingsSummary() {
    $summary = [];
    $image_styles = image_style_options(FALSE);

    // Unset possible 'No defined styles' option.
    unset($image_styles['']);

    // Styles could be lost because of enabled/disabled modules that defines
    // their styles in code.
    if (isset($image_styles[$this
      ->getSetting('photoswipe_node_style')])) {
      $summary[] = $this
        ->t('Node image style: @style', [
        '@style' => $image_styles[$this
          ->getSetting('photoswipe_node_style')],
      ]);
    }
    elseif ($this
      ->getSetting('photoswipe_node_style') == 'hide') {
      $summary[] = $this
        ->t('Node image style: Hide');
    }
    else {
      $summary[] = $this
        ->t('Node image style: Original image');
    }
    if (isset($image_styles[$this
      ->getSetting('photoswipe_node_style_first')])) {
      $summary[] = $this
        ->t('Node image style of first image: @style', [
        '@style' => $image_styles[$this
          ->getSetting('photoswipe_node_style_first')],
      ]);
    }
    elseif ($this
      ->getSetting('photoswipe_node_style_first') == 'hide') {
      $summary[] = $this
        ->t('Node image style of first image: Hide');
    }
    else {
      $summary[] = $this
        ->t('Node image style of first image: Original image');
    }
    if (isset($image_styles[$this
      ->getSetting('photoswipe_image_style')])) {
      $summary[] = $this
        ->t('Photoswipe image style: @style', [
        '@style' => $image_styles[$this
          ->getSetting('photoswipe_image_style')],
      ]);
    }
    else {
      $summary[] = $this
        ->t('photoswipe image style: Original image');
    }
    if ($this
      ->getSetting('photoswipe_reference_image_field')) {
      $summary[] = $this
        ->t('Referenced entity image field: @field', [
        '@field' => $this
          ->getSetting('photoswipe_reference_image_field'),
      ]);
    }
    if ($this
      ->getSetting('photoswipe_caption')) {
      $caption_options = [
        'alt' => $this
          ->t('Image alt tag'),
        'title' => $this
          ->t('Image title tag'),
        'node_title' => $this
          ->t('Entity title'),
        'custom' => $this
          ->t('Custom (with tokens)'),
      ];
      if (array_key_exists($this
        ->getSetting('photoswipe_caption'), $caption_options)) {
        $caption_setting = $caption_options[$this
          ->getSetting('photoswipe_caption')];
      }
      else {
        $caption_setting = $this
          ->getSetting('photoswipe_caption');
      }
      $summary[] = $this
        ->t('Photoswipe Caption: @field', [
        '@field' => $caption_setting,
      ]);
    }
    return $summary;
  }

  /**
   * {@inheritdoc}
   */
  public function viewElements(FieldItemListInterface $items, $langcode) {
    $elements = [];
    $settings = $this
      ->getSettings();
    if ($items
      ->isEmpty()) {
      $default_image = $this
        ->getFieldSetting('default_image');

      // If we are dealing with a configurable field, look in both
      // instance-level and field-level settings.
      if (empty($default_image['uuid']) && $this->fieldDefinition instanceof FieldConfigInterface) {
        $default_image = $this->fieldDefinition
          ->getFieldStorageDefinition()
          ->getSetting('default_image');
      }
      if (!empty($default_image['uuid']) && ($file = \Drupal::service('entity.repository')
        ->loadEntityByUuid('file', $default_image['uuid']))) {

        // Clone the FieldItemList into a runtime-only object for the formatter,
        // so that the fallback image can be rendered without affecting the
        // field values in the entity being rendered.
        $items = clone $items;
        $items
          ->setValue([
          'target_id' => $file
            ->id(),
          'alt' => $default_image['alt'],
          'title' => $default_image['title'],
          'width' => $default_image['width'],
          'height' => $default_image['height'],
          'entity' => $file,
          '_loaded' => TRUE,
          '_is_default' => TRUE,
        ]);
      }
    }
    \Drupal::service('photoswipe.assets_manager')
      ->attach($elements);
    if (!empty($items) && count($items) > 1) {

      // If there are more than 1 elements, add the gallery wrapper.
      // Otherwise this is done in javascript for more flexibility.
      $elements['#prefix'] = '<div class="photoswipe-gallery">';
      $elements['#suffix'] = '</div>';
    }
    foreach ($items as $delta => $item) {
      $elements[$delta] = [
        '#theme' => 'photoswipe_image_formatter',
        '#item' => $item,
        '#entity' => $items
          ->getEntity(),
        '#display_settings' => $settings,
        '#delta' => $delta,
      ];
    }
    return $elements;
  }

  /**
   * {@inheritdoc}
   */
  public function calculateDependencies() {
    $dependencies = parent::calculateDependencies();
    $style_ids = [];
    $style_ids[] = $this
      ->getSetting('photoswipe_node_style');
    if (!empty($this
      ->getSetting('photoswipe_node_style_first'))) {
      $style_ids[] = $this
        ->getSetting('photoswipe_node_style_first');
    }
    $style_ids[] = $this
      ->getSetting('photoswipe_image_style');

    /** @var \Drupal\image\ImageStyleInterface $style */
    foreach ($style_ids as $style_id) {
      if ($style_id && ($style = ImageStyle::load($style_id))) {

        // If this formatter uses a valid image style to display the image, add
        // the image style configuration entity as dependency of this formatter.
        $dependencies[$style
          ->getConfigDependencyKey()][] = $style
          ->getConfigDependencyName();
      }
    }
    return $dependencies;
  }

  /**
   * {@inheritdoc}
   */
  public function onDependencyRemoval(array $dependencies) {
    $changed = parent::onDependencyRemoval($dependencies);
    $style_ids = [];
    $style_ids['photoswipe_node_style'] = $this
      ->getSetting('photoswipe_node_style');
    if (!empty($this
      ->getSetting('photoswipe_node_style_first'))) {
      $style_ids['photoswipe_node_style_first'] = $this
        ->getSetting('photoswipe_node_style_first');
    }
    $style_ids['photoswipe_image_style'] = $this
      ->getSetting('photoswipe_image_style');

    /** @var \Drupal\image\ImageStyleInterface $style */
    foreach ($style_ids as $name => $style_id) {
      if ($style_id && ($style = ImageStyle::load($style_id))) {
        if (!empty($dependencies[$style
          ->getConfigDependencyKey()][$style
          ->getConfigDependencyName()])) {
          $replacement_id = $this->imageStyleStorage
            ->getReplacementId($style_id);

          // If a valid replacement has been provided in the storage, replace
          // the image style with the replacement and signal that the formatter
          // plugin settings were updated.
          if ($replacement_id && ImageStyle::load($replacement_id)) {
            $this
              ->setSetting($name, $replacement_id);
            $changed = TRUE;
          }
        }
      }
    }
    return $changed;
  }

}

Classes

Name	Description
PhotoswipeFieldFormatter	Plugin implementation of the 'photoswipe_field_formatter' formatter.