theme-settings.php

<?php

/**
 * @file
 * Theme setting callbacks for kalatheme.
 */

/**
 * Implements hook_form_FORM_ID_alter().
 */
function kalatheme_form_system_theme_settings_alter(&$form, &$form_state) {
  // If a non-kalatheme theme is the admin theme we need to
  // load this stuff again to get grid size info and not throw
  // errors
  require_once dirname(__FILE__) . '/includes/config.inc';
  // Don't add custom form elements to Kalatheme's settings page if Kalatheme
  // isn't the default theme.
  // Also, don't add custom form elements to a subtheme's settings page if it
  // isn't the default theme.
  $default_theme = variable_get('theme_default', $GLOBALS['theme_key']);
  $theme_name_matches = array();
  preg_match('/^admin\/appearance\/settings\/([^\/]+)\/?$/', request_path(), $theme_name_matches);
  if (isset($theme_name_matches[1]) && $default_theme != $theme_name_matches[1]) {
    return;
  }

  // Make default options collapsible
  $fieldsets = array('theme_settings', 'logo', 'favicon');
  foreach ($fieldsets as $fieldset) {
    $form[$fieldset]['#collapsible'] = TRUE;
    $form[$fieldset]['#collapsed'] = TRUE;
  }

  // Subtheme backend checks
  $form = array_merge($form, kalatheme_backend_check_form());

  // Kalatheme settings
  $form = array_merge($form, kalatheme_bootstrap_library_form());
  $form['bootstrap']['bootstrap_library']['#default_value'] = theme_get_setting('bootstrap_library');
  $form['bootstrap']['fontawesome']['#default_value'] = theme_get_setting('fontawesome');
  $form['bootstrap']['bootstrap_upload']['#default_value'] = theme_get_setting('bootstrap_upload');
  // Subtheme settings
  $form = array_merge($form, kalatheme_subtheme_form());

  // Need to pass this through to use list_allowed_values_string without errors.
  $field = array('type' => 'list_text');
  // Page title setting (only print on non-panel pages or always print).
  $form['page_title'] = array(
    '#type' => 'fieldset',
    '#title' => t('Page Title'),
    '#weight' => 41,
    '#collapsible' => TRUE,
    '#collapsed' => TRUE,
    '#description' => t('By default, Kalatheme only displays page titles on pages that aren\'t rendered through Panels or Panelizer.
      If toggled on, this setting will cause Kalatheme to always print the page title, regardless of how the page is rendered.'),
  );
  $form['page_title']['always_show_page_title'] = array(
    '#type' => 'checkbox',
    '#title' => t('Always show page title.'),
    '#default_value' => theme_get_setting('always_show_page_title'),
    '#description' => t('Check here to always print page titles on panels pages.'),
  );

  // Responsive style plugin settings.
  $form['responsive'] = array(
    '#type' => 'fieldset',
    '#title' => t('Responsive'),
    '#weight' => 42,
    '#collapsible' => TRUE,
    '#collapsed' => TRUE,
  );
  $form['responsive']['grid_size'] = array(
    '#type' => 'markup',
    '#prefix' => '<p>',
    '#markup' => t('Kalatheme automatically detects the grid size of your Bootstrap library. That said, please remember that sometimes there are just bad grid size choices. For those occassions
      Kalatheme will try to handle your bad desicions as best as possible. <strong>Your grid is currently: @grid_size columns.</strong>', array(
      '@grid_size' => kalatheme_get_grid_size(),
    )),
    '#suffix' => '</p>',
  );
  $form['responsive']['responsive_toggle'] = array(
    '#type' => 'checkbox',
    '#title' => t('Use responsive toggling.'),
    '#default_value' => theme_get_setting('responsive_toggle'),
    '#description' => t('Check here if you want the user to be able to set the device visibility of each panels pane and region.'),
  );

  // Panels styles style plugin settings.
  $form['pane_styles'] = array(
    '#type' => 'fieldset',
    '#title' => t('Pane and Region Styles'),
    '#weight' => 43,
    '#collapsible' => TRUE,
    '#collapsed' => TRUE,
    '#description' => t('If toggled on, the kalacustomize style plugin will allow the user to set a class for panels panes and regions.'),
  );
  $form['pane_styles']['pane_styles_toggle'] = array(
    '#type' => 'checkbox',
    '#title' => t('Use panels styles.'),
    '#default_value' => theme_get_setting('pane_styles_toggle'),
    '#description' => t('Check here if you want to set the class for each panels pane or region.'),
  );
  $form['pane_styles']['pane_styles_settings'] = array(
    '#type' => 'container',
    '#states' => array(
      'invisible' => array(
        ':input[name="pane_styles_toggle"]' => array('checked' => FALSE),
      ),
    ),
  );

  // Set defaults here instead of info because it is an array.
  $pane_classes = (theme_get_setting('pane_classes')) ? list_allowed_values_string(theme_get_setting('pane_classes')) : '';
  $form['pane_styles']['pane_styles_settings']['pane_classes'] = array(
    '#type' => 'textarea',
    '#title' => t('Allowed values list'),
    '#default_value' => $pane_classes,
    '#rows' => 10,
    '#element_validate' => array('list_allowed_values_setting_validate'),
    '#field_has_data' => FALSE,
    '#field' => $field,
    '#field_type' => $field['type'],
    '#description' => '<p>' . t('The possible values this field can contain. Enter one value per line, in the format key|label.') . '</p>',
  );

  // Prepare the form with kalatheme things
  $form = kalatheme_prepare_config_form($form);

  // Make sure the callback function and other fun things are actually loaded
  $form_state['build_info']['files'][] = drupal_get_path('theme', 'kalatheme') . '/includes/config.inc';
  $form_state['build_info']['files'][] = drupal_get_path('theme', 'kalatheme') . '/kalatheme.updater.inc';
}