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| 1 | <?php |
| 2 | |
| 3 | namespace NewfoldLabs\WP\Module\Performance; |
| 4 | |
| 5 | /** |
| 6 | * Class to monitor changes to an option. |
| 7 | */ |
| 8 | class OptionListener { |
| 9 | |
| 10 | /** |
| 11 | * Callback function to be called on change. |
| 12 | * |
| 13 | * @var callable |
| 14 | */ |
| 15 | protected $callable; |
| 16 | |
| 17 | /** |
| 18 | * Name of the option to monitor. |
| 19 | * |
| 20 | * @var string |
| 21 | */ |
| 22 | protected $option; |
| 23 | |
| 24 | /** |
| 25 | * Constructor |
| 26 | * |
| 27 | * @param string $option_name The name of the option to monitor. |
| 28 | * @param callable $callback The callback function to be called on change. |
| 29 | */ |
| 30 | public function __construct( string $option_name, callable $callback ) { |
| 31 | |
| 32 | $this->callable = $callback; |
| 33 | $this->option = $option_name; |
| 34 | |
| 35 | add_action( "add_option_{$option_name}", array( $this, 'onAdd' ), 10, 2 ); |
| 36 | add_action( "update_option_{$option_name}", array( $this, 'onUpdate' ), 10, 2 ); |
| 37 | add_action( "delete_option_{$option_name}", array( $this, 'onDelete' ) ); |
| 38 | } |
| 39 | |
| 40 | /** |
| 41 | * Call function when a new option value is added. |
| 42 | * |
| 43 | * @param string $option The option name. |
| 44 | * @param mixed $value The option value. |
| 45 | */ |
| 46 | public function onAdd( $option, $value ) { |
| 47 | call_user_func( $this->callable, $value, $option ); |
| 48 | } |
| 49 | |
| 50 | /** |
| 51 | * Call function when an option value is updated. |
| 52 | * |
| 53 | * @param mixed $old_value The old option value. |
| 54 | * @param mixed $new_value The new option value. |
| 55 | */ |
| 56 | public function onUpdate( $old_value, $new_value ) { |
| 57 | if ( $old_value !== $new_value ) { |
| 58 | call_user_func( $this->callable, $new_value, $this->option ); |
| 59 | } |
| 60 | } |
| 61 | |
| 62 | /** |
| 63 | * Call function when an option is deleted. |
| 64 | */ |
| 65 | public function onDelete() { |
| 66 | call_user_func( $this->callable, null, $this->option ); |
| 67 | } |
| 68 | } |