ew_mobile_switcher.info

name = EW Mobile Switcher
description = Allows switching to desktop version and back on mobile site.
dependencies[] = block
core = 7.x

ew_mobile_switcher.module

<?php

/**
 * @file ew_mobile_switcher.module
 *
 * Handles the version switch by adding/removing the class
 * "mobile-version-enabled" when called from the block link
 */

/**
 * Implements hook_init().
 */
function ew_mobile_switcher_init() {
  if (isset($_GET['force_desktop']) && is_numeric($_GET['force_desktop'])) {
    $_SESSION['force_desktop'] = $_GET['force_desktop'];

    //redirect to the same URL, but without the force_desktop arg
    $url = drupal_parse_url(request_uri());
    unset($url['query']['force_desktop']);
    drupal_goto($url['path'], $url); 
  }
}

/**
 * Helper fuction to check if the mobile view has been suppressed.
 */
function _ew_mobile_switcher_should_force_desktop() {
  return $_SESSION['force_desktop'] == 1;
}

/**
* Implements template_preprocess_html().
*/
function ew_mobile_switcher_preprocess_html(&$vars){
  // By default, the "mobile-version-enabled" class is set as default
  if (!_ew_mobile_switcher_should_force_desktop()) {
    $vars['classes_array'][] = 'mobile-version-enabled';
  }
}

/**
* Implements hook_block_info().
*/
function ew_mobile_switcher_block_info() {
   $blocks = array();
   $blocks['switch-version'] = array(
     'info' => t('Switch Mobile/Desktop Version Block'),
   );
   return $blocks;
}

 /**
  * Implements hook_block_view().
  */
function ew_mobile_switcher_block_view($delta = '') {
  $block = array();
  switch ($delta) {
    case 'switch-version' :
      $block['subject'] = '';
      $block['content'] = _ew_mobile_switcher_block_content();
      break;
    default:
      break;
  }
  return $block;
}

/**
* Block view helper.
*/
function _ew_mobile_switcher_block_content(){
  // Parse the current URI, get ready to insert extra query arg.
  $uri = drupal_parse_url(request_uri());

  if(_ew_mobile_switcher_should_force_desktop()) {
    $text = t('Switch to Mobile Version');
    $uri['query']['force_desktop'] = 0;
  } else {
    $text = t('Switch to Desktop Version');
    $uri['query']['force_desktop'] = 1;
  }

  return render(l($text, $uri['path'], $uri));
}