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<?php |
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/** |
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* Displays notices in the admin UI. |
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* |
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* @since 3.2.0 |
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*/ |
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class Wordlift_Notice_Service { |
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/** |
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* The template used to display notices. The <em>notice dismissible</em> style classes make this notice dismissible |
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* on the WordPress UI (via a small X button on the right side of the notice). |
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* |
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* @since 3.2.0 |
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*/ |
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const TEMPLATE = '<div class="wl-notice notice is-dismissible %s"><p>%s</p></div>'; |
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/** |
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* The standard WordPress <em>update</em> style class. |
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* |
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* @since 3.2.0 |
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*/ |
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const UPDATE = 'update'; |
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/** |
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* The standard WordPress <em>update-nag</em> style class. |
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* |
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* @since 3.2.0 |
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*/ |
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const UPDATE_NAG = 'update-nag'; |
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/** |
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* The standard WordPress <em>error</em> style class. |
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* |
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* @since 3.2.0 |
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*/ |
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const ERROR = 'error'; |
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/** |
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* The array of notices. |
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* |
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* @since 3.2.0 |
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* @access private |
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* @var array $notices The array of notices. |
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*/ |
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private $notices = array(); |
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/** |
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* A singleton instance of the Notice service. |
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* |
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* @since 3.2.0 |
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* @access private |
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* @var \Wordlift_Notice_Service $instance A singleton instance of the Notice service. |
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*/ |
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private static $instance; |
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/** |
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* Create an instance of the Notice service. |
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* |
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* @since 3.2.0 |
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*/ |
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public function __construct() { |
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// Hook to be called when to display notices. |
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add_action( 'admin_notices', array( $this, 'admin_notices' ) ); |
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self::$instance = $this; |
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} |
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/** |
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* Get the singleton instance of the Notice service. |
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* |
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* @since 3.2.0 |
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* @return \Wordlift_Notice_Service The singleton instance of the Notice service. |
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*/ |
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public static function get_instance() { |
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return self::$instance; |
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} |
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/** |
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* Add a notice. |
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* |
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* @since 3.2.0 |
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* |
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* @param string $class The css class. |
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* @param string $message The message. |
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*/ |
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public function add( $class, $message ) { |
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$this->notices[] = sprintf( self::TEMPLATE, $class, $message ); |
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} |
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/** |
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* Add an update notice (message with a white background and a green left border). |
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* |
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* @since 3.2.0 |
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* |
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* @param string $message The message to display. |
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*/ |
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public function add_update( $message ) { |
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$this->add( self::UPDATE, $message ); |
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} |
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/** |
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* Add an update nag notice (message with a white background and a yellow left border). |
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* |
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* @since 3.2.0 |
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* |
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* @param string $message The message to display. |
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*/ |
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public function add_update_nag( $message ) { |
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$this->add( self::UPDATE_NAG, $message ); |
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} |
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/** |
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* Add an error notice (message with a white background and a red left border). |
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* |
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* @since 3.2.0 |
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* |
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* @param string $message The message to display. |
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*/ |
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public function add_error( $message ) { |
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$this->add( self::ERROR, $message ); |
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} |
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/** |
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* Print out the notices when the admin_notices action is called. |
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* |
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* @since 3.2.0 |
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*/ |
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public function admin_notices() { |
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foreach ( $this->notices as $notice ) { |
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echo( $notice ); |
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} |
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} |
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} |
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