styleswitcher.module in Style Switcher 6

Framework for themes to easily add stylesheet switching functionality.

File

styleswitcher.module

<?php

/**
 * @file
 * Framework for themes to easily add stylesheet switching functionality.
 */

/**
 * Implementation of hook_block().
 */
function styleswitcher_block($op = 'list', $delta = 0, $edit = array()) {
  if ($op == 'list') {
    $blocks[0] = array(
      'info' => t('Style Switcher'),
      'cache' => BLOCK_NO_CACHE,
    );
    return $blocks;
  }
  else {
    if ($op == 'view') {
      switch ($delta) {
        case 0:
          global $theme_info;
          if (!empty($theme_info->info['styleswitcher'])) {
            $links = array();
            foreach ($theme_info->info['styleswitcher']['css'] as $title => $file) {
              $links[] = '<a href="#" class="style-switcher" rel="' . $title . '">' . $title . '</a>';
              _styleswitcher_add_css($file, $title);
            }
            drupal_add_js(drupal_get_path('module', 'styleswitcher') . '/styleswitcher.js');
            drupal_add_js(drupal_get_path('module', 'styleswitcher') . '/jquery.cookie.js');
            drupal_add_js('Drupal.styleSwitcher.defaultStyle();', 'inline', 'styleswitcher');
            $default = $theme_info->info['styleswitcher']['default'];
            drupal_add_js(array(
              'styleSwitcher' => array(
                'defaultStyle' => $default,
              ),
            ), 'setting');
            $block['content'] = theme('item_list', $links);
          }
          break;
      }
      return $block;
    }
  }
}

/**
 * Similar to drupal_add_css.  This function keeps a list of css files for use
 * as alternate stylesheets.
 *
 * @param $path
 * @param $title
 */
function _styleswitcher_add_css($path = NULL, $title = NULL) {
  static $css = array();
  global $theme;
  if (isset($path) && isset($title)) {
    $attr = array(
      'href' => base_path() . drupal_get_path('theme', $theme) . '/' . $path,
      'title' => $title,
    );
    $css[] = '<link type="text/css" rel="alternate stylesheet" ' . drupal_attributes($attr) . ' />';
  }
  return $css;
}

/**
 * Implementation of hook_preprocess_page().
 * Add styles and scripts in the specific way necessary for this to work.
 */
function styleswitcher_preprocess_page(&$variables) {

  // add the alternate stylesheets
  $variables['styles'] .= join("\n", _styleswitcher_add_css());

  // append to scripts since this needs to run after the drupal settings object.
  $variables['scripts'] .= drupal_get_js('styleswitcher');
}

Functions

Name	Description
styleswitcher_block	Implementation of hook_block().
styleswitcher_preprocess_page	Implementation of hook_preprocess_page(). Add styles and scripts in the specific way necessary for this to work.
_styleswitcher_add_css	Similar to drupal_add_css. This function keeps a list of css files for use as alternate stylesheets.