Club Drupal

<?php

/**

 * @file

 * Class definition of a script manager.

 *

 * This class will be used on different places. The result of the attachJsToElement()

 * should be the same in every situation within one request and throughout the

 * loading of the site.

 *

 * When manipulating the configuration do this very early in the request. This

 * could be hook_init() for example. Any other method should be before hook_page_build().

 * The implementation of addthis_page_build() is the first known instance where

 * this class might get used based on the configuration.

 */

class AddThisScriptManager {

  private $addthis = NULL;

  private $async = NULL;

  private $domready = NULL;

  /**

   * Construct method.

   */

  private function __construct() {

    $this->addthis = AddThis::getInstance();

    $this->async = $this->addthis->getWidgetJsAsync();

    $this->domready = $this->addthis->getWidgetJsDomReady();

  }

  /**

   * Return a single instance of the AddThisScriptManager.

   *

   * @return AddThisScriptManager

   */

  public static function getInstance() {

    static $manager;

    if (!isset($manager)) {

      $manager = new AddThisScriptManager();

    }

    return $manager;

  }

  /**

   * Get the current widget js url.

   *

   * @return string

   *   A url reference to the widget js.

   */

  public function getWidgetJsUrl() {

    return check_url(variable_get(AddThis::WIDGET_JS_URL_KEY, AddThis::DEFAULT_WIDGET_JS_URL));

  }

  /**

   * Return if we are on https connection.

   *

   * @return bool

   *   TRUE if the current request is on https.

   */

  public function isHttps() {

    global $is_https;

    return $is_https;

  }

  /**

   * Change the schema from http to https if we are on https.

   *

   * @param  string $url

   *   A full url.

   *

   * @return string

   *   The changed url.

   */

  public function correctSchemaIfHttps($url) {

    if (is_string($url) && $this->isHttps()) {

      return str_replace('http://', 'https://', $url);

    } 

    else {

      return $url;

    }

    throw new InvalidArgumentException('The argument was not a string value');

  }

  /**

   * Attach the widget js to the element.

   *

   * @todo Change the scope of the addthis.js.

   *   See if we can get the scope of the addthis.js into the header

   *   just below the settings so that the settings can be used in the loaded

   *   addthis.js of our module.

   *

   * @param array $element

   *   The element to attach the JavaScript to.

   */

  public function attachJsToElement(&$element) {

    if ($this->addthis->getWidgetJsInclude() != AddThis::WIDGET_JS_INCLUDE_NONE) {

      $widget_js = new AddThisWidgetJsUrl($this->getWidgetJsUrl());

      $pubid = $this->addthis->getProfileId();

      if (isset($pubid) && !empty($pubid) && is_string($pubid)) {

        $widget_js->addAttribute('pubid', $pubid);

      }

      $async = $this->async;

      if ($async) {

        $widget_js->addAttribute('async', 1);

      }

      $domready = $this->domready;

      if ($domready) {

        $widget_js->addAttribute('domready', 1);

      }

      // Only when the script is not loaded after the DOM is ready we include

      // the script with #attached.

      if (!$domready) {

        $element['#attached']['js'][$this->getWidgetJsUrl()] = array(

            'type' => 'external',

            'scope' => 'footer',

        );

      }

      // Every setting value passed here overrides previously set values but

      // leaves the values that are already set somewhere else and that are not

      // passed here.

      $element['#attached']['js'][] = array(

          'type' => 'setting',

          'data' => array(

              'addthis' => array(

                  'async' => $async,

                  'domready' => $domready,

                  'widget_url' => $this->getWidgetJsUrl(),

                  'addthis_config' => $this->getJsAddThisConfig(),

                  'addthis_share' => $this->getJsAddThisShare(),

              )

          )

      );

    }

  }

  /**

   * Enable / disable domready loading.

   *

   * @param bool $enabled

   *   TRUE to enabled domready loading.

   */

  function setDomReady($enabled) {

    $this->domready = $enabled;

  }

  /**

   * Enable / disable async loading.

   *

   * @param bool $enabled

   *   TRUE to enabled async loading.

   */

  function setAsync($enabled) {

    $this->async = $enabled;

  }

  /**

   * Get a array with all addthis_config values.

   *

   * Allow alter through 'addthis_configuration'.

   *

   * @todo Add static cache.

   *

   * @todo Make the adding of configuration dynamic.

   *   SRP is lost here.

   */

  private function getJsAddThisConfig() {

    global $language;

    $enabled_services = $this->addthis->getServiceNamesAsCommaSeparatedString($this->addthis->getEnabledServices()) . 'more';

    $excluded_services = $this->addthis->getServiceNamesAsCommaSeparatedString($this->addthis->getExcludedServices());

    $configuration = array(

      'pubid' => $this->addthis->getProfileId(),

      'services_compact' => $enabled_services,

      'services_exclude' => $excluded_services,

      'data_track_clickback' => $this->addthis->isClickbackTrackingEnabled(),

      'ui_508_compliant' => $this->addthis->get508Compliant(),

      'ui_click' => $this->addthis->isClickToOpenCompactMenuEnabled(),

      'ui_cobrand' => $this->addthis->getCoBrand(),

      'ui_delay' => $this->addthis->getUiDelay(),

      'ui_header_background' => $this->addthis->getUiHeaderBackgroundColor(),

      'ui_header_color' => $this->addthis->getUiHeaderColor(),

      'ui_open_windows' => $this->addthis->isOpenWindowsEnabled(),

      'ui_use_css' => $this->addthis->isStandardCssEnabled(),

      'ui_use_addressbook' => $this->addthis->isAddressbookEnabled(),

      'ui_language' => $language->language,

    );

    if (module_exists('googleanalytics')) {

      if ($this->addthis->isGoogleAnalyticsTrackingEnabled()) {

        $configuration['data_ga_property'] = variable_get('googleanalytics_account', '');

        $configuration['data_ga_social'] = $this->addthis->isGoogleAnalyticsSocialTrackingEnabled();

      }

    }

    drupal_alter('addthis_configuration', $configuration);

    return $configuration;

  }

  /**

   * Get a array with all addthis_share values.

   *

   * Allow alter through 'addthis_configuration_share'.

   *

   * @todo Add static cache.

   *

   * @todo Make the adding of configuration dynamic.

   *   SRP is lost here.

   */

  private function getJsAddThisShare() {

    $configuration = $this->getJsAddThisConfig();

    if (isset($configuration['templates'])) {

      $addthis_share = array(

        'templates' => $configuration['templates'],

      );

    }

    $addthis_share['templates']['twitter'] = $this->addthis->getTwitterTemplate();

    drupal_alter('addthis_configuration_share', $configuration);

    return $addthis_share;

  }

}