Club Drupal

<?php

/**

 * @file

 * Common pages for the Media WYSIWYG module.

 */

/**

 * Form callback used when embedding media.

 *

 * Allows the user to pick a format for their media file.

 * Can also have additional params depending on the media type.

 */

function media_wysiwyg_format_form($form, &$form_state, $file) {

  $form_state['file'] = $file;

  // Allow for overrides to the fields.

  $query_fields = isset($_GET['fields']) ? drupal_json_decode($_GET['fields']) : array();

  $fields = media_wysiwyg_filter_field_parser(array('fields' => $query_fields), $file);

  $options = media_wysiwyg_get_file_view_mode_options($file);

  if (!count($options)) {

    throw new Exception('Unable to continue, no available formats for displaying media.');

  }

  // Generate all the previews.

  if (!isset($form_state['storage']['view_mode_previews'])) {

    $form_state['storage']['view_mode_previews'] = array();

    foreach ($options as $view_mode => $view_mode_label) {

      $view_mode_preview = media_wysiwyg_get_file_without_label($file, $view_mode, array('wysiwyg' => TRUE));

      $form_state['storage']['view_mode_previews'][$view_mode] = drupal_render($view_mode_preview);

    }

  }

  // Add the previews back into the form array so they can be altered.

  $form['#formats'] = &$form_state['storage']['view_mode_previews'];

  // Allow for overrides to the display format.

  $default_view_mode = is_array($query_fields) && isset($query_fields['format']) ? $query_fields['format'] : variable_get('media_wysiwyg_wysiwyg_default_view_mode', 'full');

  if (!isset($options[$default_view_mode])) {

    reset($options);

    $default_view_mode = key($options);

  }

  // Add the previews by reference so that they can easily be altered by

  // changing $form['#formats'].

  $settings['media']['formatFormFormats'] = &$form_state['storage']['view_mode_previews'];

  $form['#attached']['js'][] = array('data' => $settings, 'type' => 'setting');

  // Add the required libraries, JavaScript and CSS for the form.

  $form['#attached']['library'][] = array('media', 'media_base');

  $form['#attached']['library'][] = array('system', 'form');

  $form['#attached']['css'][] = drupal_get_path('module', 'media_wysiwyg') . '/css/media_wysiwyg.css';

  $form['#attached']['js'][] = drupal_get_path('module', 'media_wysiwyg') . '/js/media_wysiwyg.format_form.js';

  $form['title'] = array(

    '#markup' => t('Embedding %filename', array('%filename' => $file->filename)),

  );

  $preview = media_get_thumbnail_preview($file);

  $form['preview'] = array(

    '#type' => 'markup',

    '#markup' => drupal_render($preview),

  );

  // These will get passed on to WYSIWYG.

  $form['options'] = array(

    '#type' => 'fieldset',

    '#title' => t('options'),

  );

  // @TODO: Display more verbose information about which formatter and what it

  // does.

  $form['options']['format'] = array(

    '#type' => 'select',

    '#title' => t('Display as'),

    '#options' => $options,

    '#default_value' => $default_view_mode,

    '#description' => t('Choose the type of display you would like for this

      file. Please be aware that files may display differently than they do when

      they are inserted into an editor.')

  );

  // Add fields from the file, so that we can override them if necessary.

  $form['options']['fields'] = array();

  foreach ($fields as $field_name => $field_value) {

    $file->{$field_name} = $field_value;

  }

  field_attach_form('file', $file, $form['options']['fields'], $form_state);

  $instance = field_info_instances('file', $file->type);

  foreach ($instance as $field_name => $field_value) {

    $info = field_info_field($field_name);

    // Only single valued fields can be overridden.

    $allow = $info['cardinality'] == 1 && !empty($instance[$field_name]['settings']['wysiwyg_override']);

    $form['options']['fields'][$field_name]['#access'] = $allow;

  }

  // Add view mode preview.

  media_wysiwyg_format_form_view_mode($form, $form_state, $file);

  // Similar to a form_alter, but we want this to run first so that

  // media.types.inc can add the fields specific to a given type (like alt tags

  // on media). If implemented as an alter, this might not happen, making other

  // alters not be able to work on those fields.

  // @todo: We need to pass in existing values for those attributes.

  drupal_alter('media_wysiwyg_format_form_prepare', $form, $form_state, $file);

  if (!element_children($form['options'])) {

    $form['options']['#attributes'] = array('style' => 'display:none');

  }

  return $form;

}

/**

 * Add ajax preview when selecting view mode in wysiwyg editor.

 */

function media_wysiwyg_format_form_view_mode(&$form, $form_state, $file)  {

  // Check to see if a view mode ("format") has already been specified for

  //  this media item. First, check for a standard form-submitted value.

  if (!empty($form_state['values']['format'])) {

    $view_mode = $form_state['values']['format'];

  }

  // Second, check the request for a JSON-encoded value.

  elseif (isset($_GET['fields'])) {

    $query_fields = drupal_json_decode($_GET['fields']);

    if (isset($query_fields['format'])) {

      $view_mode = $query_fields['format'];

    }

  }

  // If we were unable to determine a view mode, or we found a view mode

  //  that does not exist in the list of format options presented on this

  //  form, use the default view mode.

  if (!isset($view_mode) || !array_key_exists($view_mode, $form['options']['format']['#options'])) {

    $view_mode = variable_get('media_wysiwyg_wysiwyg_default_view_mode', 'full');

  }

  $form['preview'] = array();

  $form['preview']['#prefix'] = '<div class="media-item"><div class="media-thumbnail">';

  $form['preview']['#suffix'] = '</div><div class="label-wrapper"><label class="media-filename">' . $file->filename . '</label></div></div>';

  $form['preview']['thumbnail'] = file_view_file($file, $view_mode);

  $form['preview']['thumbnail']['#prefix'] = '<div id="media-preview">';

  $form['preview']['thumbnail']['#suffix'] = '</div>';

  if (!isset($form['options']['format']['#default_value'])) {

    $form['options']['format']['#default_value'] = $view_mode;

  }

  $form['options']['format']['#ajax'] = array(

    'callback' => 'media_wysiwyg_format_form_preview',

    'wrapper' => 'media-preview',

  );

  $wysiwyg_view_mode = db_query('SELECT view_mode FROM {media_view_mode_wysiwyg} WHERE type = :type', array(':type' => $file->type))->fetchField();

  $view_modes = media_wysiwyg_get_wysiwyg_allowed_view_modes($file);

  $formats = $options = array();

  foreach ($view_modes as $view_mode => $view_mode_info) {

    $options[$view_mode] = $view_mode_info['label'];

    if (!empty($wysiwyg_view_mode)) {

      $element = media_wysiwyg_get_file_without_label($file, $wysiwyg_view_mode, array('wysiwyg' => TRUE));

    }

    else {

      $element = media_wysiwyg_get_file_without_label($file, $view_mode, array('wysiwyg' => TRUE));

    }

    $formats[$view_mode] = drupal_render($element);

  }

  $form['#formats'] = $formats;

  $form['options']['format']['#options'] = $options;

}

/**

 * AJAX callback to select the portion of the format form to be updated with a preview.

 *

 * @param array $form

 *   An associative array containing the structure of the form.

 * @param array $form_state

 *   An associative array containing the current state of the form.

 *

 * @return array

 *   The preview form item.

 */

function media_wysiwyg_format_form_preview($form, $form_state) {

  return $form['preview']['thumbnail'];

}