<?php

/**
 * @file
 * Test module for the entity_view_mode module.
 */

/**
 * Implements hook_theme().
 */
function entity_view_mode_test_theme() {
  $info = array();

  $info['entity_view_mode_test'] = array(
    'render element' => 'elements',
    // Template needs to be set in order to actually have preprocess functions
    // added to its registry.
    'template' => 'does-not-exist',
    'function' => 'entity_view_mode_test_return_suggestions',
  );

  return $info;
}

function template_preprocess_entity_view_mode_test(&$variables) {
  $variables['theme_hook_suggestions'][] = 'test__last';
  $variables['theme_hook_suggestions'][] = 'test__bundle';
  $variables['theme_hook_suggestions'][] = 'test__id';
  $variables['theme_hook_suggestions'][] = 'test__first';
}

/**
 * Implements hook_theme_registry_alter().
 */
function entity_view_mode_test_theme_registry_alter(&$registry) {
  if ($hooks = variable_get('entity_view_mode_theme_output_suggestions', array())) {
    foreach ($hooks as $hook) {
      if (isset($registry[$hook])) {
        $registry[$hook]['function'] = 'entity_view_mode_test_return_suggestions';
      }
    }
  }
}

function entity_view_mode_test_return_suggestions(array $variables) {
  $suggestions = array();
  if (!empty($variables['theme_hook_suggestions'])) {
    $suggestions = $variables['theme_hook_suggestions'];
  }
  if (!empty($variables['theme_hook_suggestion'])) {
    $suggestions[] = $variables['theme_hook_suggestion'];
  }
  return array_reverse($suggestions);
}