/**
* Specifies the classname and description, instantiates the widget,
* loads localization files, and includes necessary stylesheets and JavaScript.
*/
public function __construct()
{
/*
* Call $plugin_slug from public plugin class.
*
*/
$this->plugin = Super_Simple_Events::get_instance();
$this->widget_id = $this->plugin->get_plugin_slug() . '-id';
parent::__construct($this->widget_id, sprintf(__('Upcoming Events (%s)', $this->plugin->get_plugin_slug()), $this->plugin->get_plugin_name()), array('classname' => $this->plugin->get_plugin_slug() . '-class', 'description' => sprintf(__('Display a list of upcoming events created in the %s plugin', $this->plugin->get_plugin_slug()), $this->plugin->get_plugin_name())));
$this->alt_option_name = 'widget_' . $this->plugin->get_plugin_slug();
// Register site styles and scripts
add_action('wp_enqueue_scripts', array($this, 'register_widget_styles'));
// Refreshing the widget's cached output with each new post
add_action('save_post', array($this, 'flush_widget_cache'));
add_action('deleted_post', array($this, 'flush_widget_cache'));
add_action('switch_theme', array($this, 'flush_widget_cache'));
}
/**
* Return an instance of this class.
*
* @since 1.0.0
*
* @return object A single instance of this class.
*/
public static function get_instance()
{
// If the single instance hasn't been set, set it now.
if (null == self::$instance) {
self::$instance = new self();
}
return self::$instance;
}
/**
* When update post_type_slug or taxonomy_slug, flush rewrite rules
*
* @param $old_value
* @param $value
* @since 1.0.1
*/
public function update_option_callback($old_value, $value)
{
if ($old_value['post_type_slug'] != $value['post_type_slug'] || $old_value['taxonomy_slug'] != $value['taxonomy_slug']) {
Super_Simple_Events::flush_rewrite_rules();
}
}