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root / drupal7 / sites / all / modules / sweaver / sweaver.inc @ 87dbc3bf

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<?php
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/**
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 * @file
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 * Class Sweaver.
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 */
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class Sweaver {
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  private static $instance;
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  private $style = NULL;
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  private $theme = NULL;
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  private $plugins = array();
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  private $configured = FALSE;
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  private $plugins_registry = array();
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  private $plugins_registry_enabled = array();
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  /**
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	 * Constructor.
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	 * Private constructor to make sure this is never
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	 * instantiated by the constructor.
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   */
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  private function __construct() {
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    if ($theme_key = sweaver_session(NULL, 'sweaver_theme')) {
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      $this->set_current_style($theme_key);
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    }
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    else {
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      $this->set_current_style(variable_get('theme_default', 'garland'));
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    }
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    if (!$this->is_configured()) {
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      $this->register_plugins_configuration();
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    }
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  }
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  /**
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   * GetInstance
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   * Static method to always return the same object Sweaver.
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   * There can only be one Sweaver.
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   */
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  final static public function get_instance() {
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    if (!isset(self::$instance)) {
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      self::$instance = new Sweaver();
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    }
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    return self::$instance;
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  }
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  /**
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   * register_plugins_configuration.
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   * Registers an array of plugin configuration data to Sweaver.
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   */
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  public function register_plugins_configuration() {
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    // Load the required plugins of ctools and the sweaver base class.
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    ctools_include('plugins');
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    // Check if the configuration was cached or not.
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    if ($plugins_cache = cache_get('sweaver_plugins')) {
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      $this->plugins_registry = $plugins_cache->data['sweaver_plugins'];
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      $this->plugins_registry_enabled = $plugins_cache->data['sweaver_plugins_enabled'];
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    }
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    else {
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      $this->plugins_registry = ctools_get_plugins('sweaver', 'plugins');
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      // Build enabled plugins.
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      foreach ($this->plugins_registry as $key => $plugin) {
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        $this->plugins_registry[$key]['enabled'] = 0;
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        if (variable_get('sweaver_plugin_status_'. $key, FALSE)) {
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          $this->plugins_registry[$key]['enabled'] = 1;
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          $this->plugins_registry_enabled[$key] = $this->plugins_registry[$key];
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        }
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      }
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      // Cache the plugins ourselves too.
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      $sweaver_plugins['sweaver_plugins'] = $this->plugins_registry;
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      $sweaver_plugins['sweaver_plugins_enabled'] = $this->plugins_registry_enabled;
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      cache_set('sweaver_plugins', $sweaver_plugins);
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    }
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    $this->configured = TRUE;
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  }
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  /**
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   * Get the sweaver plugins configurations.
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   */
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  public function get_plugins_registry($enabled = TRUE) {
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    return $enabled ? $this->plugins_registry_enabled : $this->plugins_registry;
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  }
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  /**
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   * is_configured.
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   * Tells us if Sweaver is configured.
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   */
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  public function is_configured() {
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    return $this->configured;
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  }
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  /**
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   * add_plugin.
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   * Adds a sweaver plugin to the stash.
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   */
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  private function add_plugin(Sweaver_plugin $plugin) {
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    $this->plugins[] = $plugin;
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  }
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  /**
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   * is_plugin_activated
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   * Check if a plugin is activated
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   * @return true if activated
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   */
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  public function is_plugin_activated($name) {
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    if ($this->plugins[$name]) {
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      return isset($this->plugins_registry_enabled[$name]);
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    }
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    return false;
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  }
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  /**
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   * get_plugin.
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   * Gets a sweaver plugin, and instantiates it if not loaded yet.
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   */
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  public function get_plugin($name, $enabled = TRUE) {
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    if (!isset($this->plugins_registry[$name])) {
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      drupal_set_message(t('No configuration found for @name in the plugin registry', array('@name' => $name)));
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    }
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    if (!isset($this->plugins[$name])) {
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      module_load_include('inc', 'sweaver', 'sweaver_plugin');
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      $check = ($enabled) ? isset($this->plugins_registry_enabled[$name]) : TRUE;
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      if ($check && $class = ctools_plugin_get_class($this->plugins_registry[$name], 'handler')) {
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        // Check that class exists until CTools & registry issues are resolved.
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        if (class_exists($class)) {
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          $this->plugins[$name] = new $class($this->plugins_registry[$name]);
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        }
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      }
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      else {
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        $this->plugins[$name] = FALSE;
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      }
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    }
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    return $this->plugins[$name];
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  }
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  /**
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   * Sets the current style.
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   * @param $theme_key
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   *   Optional, if missing the global one will be used.
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   */
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  public function set_current_style($theme_key) {
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    $this->theme = $theme_key;
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  }
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  /**
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   * Return a style for a theme.
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   *
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   * @param $theme
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   *   The machine name of the theme.
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   * @param $reset
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   *   Whether to reset the current $css variable or not.
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   * @return $css
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   *   The css definition for this theme.
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   */
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  public function get_current_style($reset = FALSE) {
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    $run = &drupal_static('run', FALSE);
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    $css = &drupal_static('css', FALSE);
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    if (!$run || $reset) {
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      $run = TRUE;
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      if (sweaver_session(NULL, 'sweaver_temp')) {
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        ctools_include('object-cache');
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        $css = ctools_object_cache_get('sweaver-styling', 'sweaver-styling');
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        if (!isset($css->style_id)) {
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          $css = new stdClass();
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        }
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        $css->type = 'draft';
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      }
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      elseif (sweaver_session(NULL, 'draft_mode')) {
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        $table = (sweaver_session(NULL, 'loaded_table') == 'live') ? 'sweaver_style' : 'sweaver_style_draft';
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        $css = db_query("SELECT * FROM {". $table ."} where style_id = :style_id", array(':style_id' => sweaver_session(NULL, 'loaded_style')))->fetchObject();
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        if (!isset($css->style_id)) {
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          $css = new stdClass();
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        }
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        $css->type = 'draft';
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      }
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      else {
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        $css = db_query("SELECT style_id, theme, style, css, customcss, palette, themesettings, active FROM {sweaver_style} where theme = :theme and active = 1", array(':theme' => $this->theme))->fetchObject();
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        if (!isset($css->style_id)) {
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          $css = new stdClass();
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        }
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        $css->type = 'live';
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      }
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      if (!isset($css->style_id)) {
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        $css = NULL;
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      }
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    }
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    $this->style = $css;
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    return $css;
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  }
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  /**
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   * Returns the currently known theme_key.
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   */
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  public function get_theme_key() {
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    return $this->theme;
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  }
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}