fett.theme

<?php

/**
 * @file
 * Functions to support theming in Fett.
 */

use Drupal\Component\Utility\Html;
use Drupal\Core\Link;
use Drupal\Core\Template\Attribute;
use Drupal\Core\Render\Element;

include_once 'includes/fett.offcanvas.php';
include_once 'includes/fett.mobile_menu.php';

/**
 * Implements hook_theme().
 */
function fett_theme() {
  $module_path = drupal_get_path('theme', 'fett');
  return []
    + fett_offcanvas_theme($module_path)
    + fett_mobile_menu_theme($module_path);
}

/**
 * Implements hook_theme_registry_alter().
 */
function fett_theme_registry_alter(&$theme_registry) {
  // Add another page preprocess function that will get called after all child
  // theme preprocess functions.
  $theme_registry['page']['preprocess functions'][] = 'fett_preprocess_page_last';
}

/**
 * Implements hook_library_info_alter().
 */
function fett_library_info_alter(&$libraries, $extension) {
  // dsm($libraries);
  $active_theme = \Drupal::theme()->getActiveTheme();
  $theme = $active_theme->getName();
  if ($extension == 'fett' && $theme !== 'fett') {
    // Use subtheme assets if they exists.
    $theme_path = $active_theme->getPath();
    foreach ($libraries as &$library) {
      if (!empty($library['override_enable'])) {
        // Allow child theme to override Fett css.
        if (!empty($library['css'])) {
          foreach ($library['css'] as $type => $files) {
            foreach ($files as $file => $data) {
              $new_path = str_replace('fett', $theme, $theme_path . '/' . $file);
              if (file_exists($new_path)) {
                $library['css'][$type]['/' . $new_path] = $data;
                unset($library['css'][$type][$file]);
              }
            }
          }
        }
        // Allow child theme to override Fett js.
        if (!empty($library['js'])) {
          foreach ($library['js'] as $file => $data) {
            $new_path = $theme_path . '/' . $file;
            if (file_exists($new_path)) {
              $library['js']['/' . $new_path] = $data;
              unset($library['js'][$file]);
            }
          }
        }
      }
    }
  }
}

/**
 * Alter attachments (typically assets) to a page before it is rendered.
 *
 * Use this hook when you want to remove or alter attachments on the page, or
 * add attachments to the page that depend on another module's attachments (this
 * hook runs after hook_page_attachments().
 *
 * @param array &$page
 *   An empty renderable array representing the page.
 *
 * @see hook_page_attachments_alter()
 */
function fett_page_attachments_alter(array &$page) {
  $active_theme = \Drupal::theme()->getActiveTheme();
  $theme = $active_theme->getName();
  $theme_path = $active_theme->getPath();
  $config = \Drupal::config($theme . '.settings')->get('settings');

  // Process extension settings.
  if (isset($config['enable_extensions']) && $config['enable_extensions'] === 1) {

    // Attach poly-fills to support IE8.
    if (isset($config['enable_legacy_browsers']) && $config['enable_legacy_browsers'] === 1) {
      if (isset($config['legacy_browser_polyfills']) && $config['legacy_browser_polyfills'] === 1) {
        $page['#attached']['library'][] = 'fett/fett.html5shiv';
        $page['#attached']['library'][] = 'fett/fett.respond';
        $page['#attached']['library'][] = 'fett/fett.selectivizr';
      }
    }

  }

  // Optimize mobile viewport.
  $page['#attached']['html_head'][] = array(
    array(
      '#type' => 'html_tag',
      '#tag' => 'meta',
      '#attributes' => array(
        'name' => 'viewport',
        'content' => 'width=device-width',
      ),
    ),
    'mobile_viewport',
  );

  // Force IE to use Chrome Frame if installed.
  $page['#attached']['html_head'][] = array(
    array(
      '#type' => 'html_tag',
      '#tag' => 'meta',
      '#attributes' => array(
        'content' => 'ie=edge, chrome=1',
        'http-equiv' => 'x-ua-compatible',
      ),
    ),
    'chrome_frame',
  );

  // Remove image toolbar in IE.
  $page['#attached']['html_head'][] = array(
    array(
      '#type' => 'html_tag',
      '#tag' => 'meta',
      '#attributes' => array(
        'http-equiv' => 'ImageToolbar',
        'content' => 'false',
      ),
    ),
    'ie_image_toolbar',
  );
}

/**
 * Implements hook_form_alter().
 */
function fett_form_alter(&$form, &$form_state, $form_id) {
  // Sexy submit buttons.
  if (!empty($form['actions']) && !empty($form['actions']['submit'])) {
    $form['actions']['submit']['#attributes']['class'][] = 'primary';
    $form['actions']['submit']['#attributes']['class'][] = 'button';
    $form['actions']['submit']['#attributes']['class'][] = 'radius';
  }
}

/**
 * Implements hook_preprocess_page().
 */
function fett_preprocess_page(&$vars) {
  $active_theme = \Drupal::theme()->getActiveTheme();
  $theme = $active_theme->getName();
  $config = \Drupal::config($theme . '.settings')->get('settings');

  $vars['logo'] = [
    '#theme' => 'image',
    '#uri' => $vars['base_path'] . $vars['directory'] . '/logo.svg',
    '#attributes' => [
      'class' => [
        'site-logo',
      ],
    ],
  ];

  $vars['prefix'] = isset($vars['prefix']) ? $vars['prefix'] : [];
  $vars['suffix'] = isset($vars['suffix']) ? $vars['suffix'] : [];
  $vars['attributes'] = isset($vars['attributes']) ? $vars['attributes'] : [];

  foreach (Element::children($vars['page']) as $region_id) {
    foreach (Element::children($vars['page'][$region_id]) as $block_id) {
      if ($block_id == $theme . '_messages') {
        $vars['messages'] = $vars['page'][$region_id][$block_id];
        unset($vars['page'][$region_id][$block_id]);
      }
    }
  }
  // Mobile menu ops.
  fett_mobile_menu_preprocess_page($vars, $config);
}

/**
 * Implements hook_preprocess_page().
 */
function fett_preprocess_node(&$vars) {
  $vars['tag'] = 'article';
  $vars['title_element'] = 'h2';
  $vars['link_title'] = TRUE;
  $vars['content_element'] = '';
  $vars['content_attributes'] = [];
}

/**
 * Implements template_preprocess_node.
 */
function fett_preprocess_field(&$vars) {
  $vars['tag'] = 'div';
  $vars['content_element'] = '';
}

/**
 * Last page preprocessor.
 *
 * This page preprocess function will be called after all other preprocessing
 * has been completed.
 */
function fett_preprocess_page_last(&$vars) {
  $theme = \Drupal::theme()->getActiveTheme()->getName();
  $config = \Drupal::config($theme . '.settings')->get('settings');

  // Offcanvas ops.
  fett_offcanvas_preprocess_page($vars, $config);
}

/**
 * Implements hook_preprocess_eck_entity().
 */
function fett_preprocess_eck_entity(&$vars) {
  $vars['attributes']['class'][] = Html::getClass($vars['entity_type']);
  $vars['attributes']['class'][] = Html::getClass($vars['bundle']);
  $vars['attributes']['class'][] = Html::getClass($vars['elements']['#view_mode']);
}

/**
 * Implements hook_preprocess_block().
 */
function fett_preprocess_block(&$vars) {
  $theme = \Drupal::theme()->getActiveTheme()->getName();
  $config = \Drupal::config($theme . '.settings')->get('settings');
  fett_mobile_menu_preprocess_block($vars, $config);

  // Remove classes for blocks we don't need wrapper. block.html.twig will
  // not wrap if attributes are empty.
  switch ($vars['plugin_id']) {
    case 'system_main_block':
      $vars['attributes'] = [];
      break;
  }
}

/**
 * Implments template_preprocess_views_view().
 */
function fett_preprocess_views_view(&$vars) {
  $view = $vars['view'];

  if ($view->ajaxEnabled() == FALSE) {
    // Empty the dom_id if ajax is disabled.
    $vars['dom_id'] = '';
  }
  else {
    // Add an ajax class as well as the dom_id.
    $vars['attributes']['class'][] = 'ajax';
  }
}

/**
 * Implments template_preprocess_views_view().
 */
function fett_preprocess_container(&$vars) {
  $element = $vars['element'];
  // Remove classes for containers we don't need wrapper. container.html.twig
  // will not wrap if attributes are empty.
  switch ($element['#type']) {
    case 'view':
      $vars['attributes'] = [];
      break;
  }
}

/**
 * Implements template_preprocess_file().
 */
function fett_preprocess_file_link(&$vars) {
  $vars['attributes']['class'][] = 'icon';
}

/**
 * Implements hook_preprocess_menu().
 */
function fett_preprocess_menu(&$vars) {
  // Ignore admin menus.
  if (isset($vars['theme_hook_original']) && $vars['theme_hook_original'] == 'menu__toolbar__admin') {
    return;
  }
  _fett_preprocess_menu_alter_items($vars['items']);
}

/**
 * Helper function to recursively alter menu items.
 */
function _fett_preprocess_menu_alter_items(&$items) {
  foreach ($items as &$item) {
    $options = $item['url']->getOptions();
    $options['attributes']['class'][] = 'menu-item';
    $item['url']->setOptions($options);
    $item['link_attributes'] = new Attribute($options['attributes']);
    if (!empty($item['below'])) {
      $item['below'] = _fett_preprocess_menu_alter_items($item['below']);
    }
  }
  return $items;
}

function fett_preprocess_menu_local_task(&$variables) {
  $url = $variables['link']['#url'];
  $state = !empty($variables['element']['#active']) ? 'active' : 'secondary';
  $options = $url->getOptions();
  $options['attributes']['class'][] = 'button';
  $options['attributes']['class'][] = 'admin';
  $options['attributes']['class'][] = $state;
  $url->setOptions($options);
}