<?php
// $Id: themekey.module,v 1.12.2.6 2009-12-17 18:54:06 mkalkbrenner Exp $

require_once(drupal_get_path('module', 'themekey') .'/themekey_base.inc');

/**
 * Implementation of hook_theme()
 */
function themekey_theme() {
  $items = array(
    'themekey_properties_form' => array(
      'file' => 'themekey_admin.inc',
      'arguments' => array('form' => NULL),
    ),
  );
  return $items;
}

/**
 * Implementation of hook_perm().
 */
function themekey_perm() {
  return array('administer theme assignments', 'administer themekey settings');
}

/**
 * Implementation of hook_menu().
 */
function themekey_menu() {
  $items = array();
  $items['admin/settings/themekey'] = array(
    'title' => 'ThemeKey',
    'description' => 'Map themes to Drupal paths or object properties.',
    'access callback' => 'user_access',
    'access arguments' => array('administer theme assignments'),
    'file' => 'themekey_admin.inc',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('themekey_properties_form')
  );
  $items['admin/settings/themekey/properties'] = array(
    'title' => t('Theme Switching Rule Chain'),
    'type' => MENU_DEFAULT_LOCAL_TASK,
    'weight' => 0
  );
  $items['admin/settings/themekey/properties/delete'] = array(
    'title' => t('Delete ThemeKey Property'),
    'page callback' => 'drupal_get_form',
    'page arguments' => array('themekey_admin_delete_property_confirm', 1),
    'access callback' => 'user_access',
    'access arguments' => array('administer theme assignments'),
    'file' => 'themekey_admin.inc',
    'type' => MENU_CALLBACK,
  );
  $items['admin/settings/themekey/settings'] = array(
    'title' => t('Settings'),
    'access callback' => 'user_access',
    'access arguments' => array('administer themekey settings'),
    'file' => 'themekey_admin.inc',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('_themekey_settings_form'),
    'type' => MENU_LOCAL_TASK,
    'weight' => 5
  );
  $items['admin/settings/themekey/settings/general'] = array(
    'title' => t('General'),
    'type' => MENU_DEFAULT_LOCAL_TASK,
    'weight' => 0
  );

  return $items;
}

/**
 * Implementation of hook_themekey_properties().
 */
function themekey_themekey_properties() {
  require_once(drupal_get_path('module', 'themekey') .'/themekey_build.inc');
  return _themekey_invoke_modules('themekey_properties');
}

/**
 * Implementation of hook_themekey_global().
 */
function themekey_themekey_global() {
  require_once(drupal_get_path('module', 'themekey') .'/themekey_build.inc');
  return _themekey_invoke_modules('themekey_global');
}

/**
 * Implementation of hook_themekey_paths().
 */
function themekey_themekey_paths() {
  require_once(drupal_get_path('module', 'themekey') .'/themekey_build.inc');
  return _themekey_invoke_modules('themekey_paths');
}

/**
 * Implementation of hook_init().
 */
function themekey_init() {
  global $custom_theme;

  // don't change theme when another module already set a $custom_theme like system.module does (administration theme)
  // don't change theme when administer blocks
  if (!$custom_theme && strpos($_GET['q'], 'admin/build/block') !== 0) {
    $theme = _themekey_match_properties();

    // If no theme has been triggered but a theme
    // is in the user's session, use that theme.
    if (!$theme && !empty($_SESSION['themekey_theme'])
        && (!$custom_theme || $custom_theme == variable_get('theme_default', 'garland'))) {
      $custom_theme = $_SESSION['themekey_theme'];
    }

    // We have a theme, apply it
    if (!empty($theme) && $theme != 'default') {
      if ((user_is_logged_in() && variable_get('themekey_theme_maintain', 0)) ||
          (!user_is_logged_in() && variable_get('themekey_theme_maintain_anonymous', 0))) {
        $_SESSION['themekey_theme'] = $theme;
      }
      else {
        unset($_SESSION['themekey_theme']);
      }
      $custom_theme = $theme;
    }
  }
}