Preprocessing for theme hook suggestions. #drupal #theme

preprocess_suggestions.php

<?php

/**
 * Provides additional preprocess hooks for theme hook suggestions.
 */
function _THEME_process_hooks(&$vars, $process = 'preprocess', $hooks = null) {

  $prefix = '_THEME';

  if(is_null($hooks)) {
    $hooks = $vars['theme_hook_suggestions'];
  }

  static $static_fast;
  if(is_null($static_fast)) {
    $static_fast['functions'] = &drupal_static(__FUNCTION__, array());
  }
  foreach($hooks as $hook) {
    if(!isset($static_fast['functions'][$hook][$process])) {
      $function = $prefix . '_' . $process . '__' . $hook;
      $static_fast['functions'][$hook][$process] = function_exists($function) ? $function : false;
    }
    if($static_fast['functions'][$hook][$process]) {
      $static_fast['functions'][$hook][$process]($vars);
    }
  }
}

/**
 * Provide additional theme_hook_suggestions for node types based
 * on viewmodes
 */
function THEME_preprocess_node(&$vars) {

  $type      = $vars['type'];
  $view_mode = $vars['view_mode'] ? $vars['view_mode'] : 'full';

  $vars['theme_hook_suggestions'] = array(
    "node__{$type}",
    "node__{$type}__{$view_mode}",
  );

  _THEME_process_hooks($vars, 'preprocess');
}

function _THEME_preprocess_node__page(&$vars) {
  // Do stuff
}