class QuickContent

abstract class QuickContent implements QuickContentRenderableInterface {
    
    /**
     * Used as the title of the tab.
     * @var string
     */
    protected $title;
    
    /**
     * An array containing the information that defines the tab content, specific
     * to its type.
     * @var array
     */
    protected $settings;
    
    /**
     * A render array of the contents.
     * @var array
     */
    protected $rendered_content;
    
    /**
     * Constructor
     */
    public function __construct($item) {
        $this->title = isset($item['title']) ? $item['title'] : '';
        // We do not need to store title, type or weight in the settings array, which
        // is for type-specific settings.
        unset($item['title'], $item['type'], $item['weight']);
        $this->settings = $item;
    }
    
    /**
     * Accessor for the tab title.
     */
    public function getTitle() {
        return $this->title;
    }
    
    /**
     * Accessor for the tab settings.
     */
    public function getSettings() {
        return $this->settings;
    }
    
    /**
     * Instantiate a content type object.
     *
     * @param $name
     *   The type name of the plugin.
     *
     * @param $item
     *   An array containing the item definition
     *
     */
    public static function factory($name, $item) {
        ctools_include('plugins');
        if ($class = ctools_plugin_load_class('quicktabs', 'contents', $name, 'handler')) {
            // We now need to check the plugin's dependencies, to make sure they're installed.
            // This info has already been statically cached at this point so there's no
            // harm in making a call to ctools_get_plugins().
            $plugin = ctools_get_plugins('quicktabs', 'contents', $name);
            if (isset($plugin['dependencies'])) {
                foreach ($plugin['dependencies'] as $dep) {
                    // If any dependency is missing we cannot instantiate our class.
                    if (!Drupal::moduleHandler()->moduleExists($dep)) {
                        return NULL;
                    }
                }
            }
            return new $class($item);
        }
        return NULL;
    }
    
    /**
     * Method for returning the form elements to display for this tab type on
     * the admin form.
     *
     * @param $delta Integer representing this tab's position in the tabs array.
     *
     * @param $qt An object representing the Quicktabs instance that the tabs are
     * being built for.
     */
    public abstract function optionsForm($delta, $qt);

}