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<?php |
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|
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abstract class WP_Stream_Connector { |
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|
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/** |
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* Connector slug |
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* |
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* @var string |
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*/ |
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public static $name = null; |
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|
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/** |
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* Actions registered for this connector |
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* |
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* @var array |
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*/ |
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public static $actions = array(); |
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|
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/** |
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* Previous Stream entry in same request |
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* |
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* @var int |
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*/ |
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public static $prev_stream = null; |
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|
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/** |
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* Register all context hooks |
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* |
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* @return void |
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*/ |
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public static function register() { |
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$class = get_called_class(); |
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|
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foreach ( $class::$actions as $action ) { |
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add_action( $action, array( $class, 'callback' ), null, 5 ); |
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} |
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|
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add_filter( 'wp_stream_action_links_' . $class::$name, array( $class, 'action_links' ), 10, 2 ); |
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} |
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|
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/** |
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* Callback for all registered hooks throughout Stream |
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* Looks for a class method with the convention: "callback_{action name}" |
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* |
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* @return void |
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*/ |
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public static function callback() { |
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$action = current_filter(); |
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$class = get_called_class(); |
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$callback = array( $class, 'callback_' . preg_replace( '/[^a-z0-9_\-]/', '_', $action ) ); |
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|
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// For the sake of testing, trigger an action with the name of the callback |
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if ( defined( 'STREAM_TESTS' ) ) { |
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/** |
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* Action fires during testing to test the current callback |
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* |
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* @param array $callback Callback name |
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*/ |
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do_action( 'wp_stream_test_' . $callback[1] ); |
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} |
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|
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// Call the real function |
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if ( is_callable( $callback ) ) { |
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return call_user_func_array( $callback, func_get_args() ); |
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} |
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} |
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|
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/** |
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* Add action links to Stream drop row in admin list screen |
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* |
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* @filter wp_stream_action_links_{connector} |
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* @param array $links Previous links registered |
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* @param object $record Stream record |
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* @return array Action links |
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*/ |
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public static function action_links( $links, $record ) { |
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return $links; |
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} |
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|
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/** |
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* Log handler |
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* |
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* @param string $message sprintf-ready error message string |
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* @param array $args sprintf (and extra) arguments to use |
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* @param int $object_id Target object id |
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* @param string $context Context of the event |
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* @param string $action Action of the event |
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* @param int $user_id User responsible for the event |
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* |
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* @internal param string $action Action performed (stream_action) |
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* @return bool |
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*/ |
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public static function log( $message, $args, $object_id, $context, $action, $user_id = null ) { |
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$class = get_called_class(); |
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$connector = $class::$name; |
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|
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$data = apply_filters( |
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'wp_stream_log_data', |
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compact( 'connector', 'message', 'args', 'object_id', 'context', 'action', 'user_id' ) |
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); |
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|
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if ( ! $data ) { |
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return false; |
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} else { |
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$connector = $data['connector']; |
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$message = $data['message']; |
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$args = $data['args']; |
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$object_id = $data['object_id']; |
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$context = $data['context']; |
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$action = $data['action']; |
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$user_id = $data['user_id']; |
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} |
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|
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return call_user_func_array( array( WP_Stream_Log::get_instance(), 'log' ), compact( 'connector', 'message', 'args', 'object_id', 'context', 'action', 'user_id' ) ); |
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} |
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|
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/** |
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* Save log data till shutdown, so other callbacks would be able to override |
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* |
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* @param string $handle Special slug to be shared with other actions |
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* |
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* @internal param mixed $arg1 Extra arguments to sent to log() |
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* @internal param mixed $arg2 , etc.. |
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* @return void |
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*/ |
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public static function delayed_log( $handle ) { |
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$args = func_get_args(); |
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|
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array_shift( $args ); |
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|
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self::$delayed[ $handle ] = $args; |
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|
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add_action( 'shutdown', array( __CLASS__, 'delayed_log_commit' ) ); |
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} |
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|
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/** |
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* Commit delayed logs saved by @delayed_log |
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* |
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* @return void |
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*/ |
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public static function delayed_log_commit() { |
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foreach ( self::$delayed as $handle => $args ) { |
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call_user_func_array( array( __CLASS__, 'log' ) , $args ); |
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} |
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} |
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|
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/** |
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* Compare two values and return changed keys if they are arrays |
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* |
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* @param mixed $old_value Value before change |
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* @param mixed $new_value Value after change |
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* @param bool|int $deep Get array children changes keys as well, not just parents |
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* |
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* @return array |
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*/ |
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public static function get_changed_keys( $old_value, $new_value, $deep = false ) { |
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if ( ! is_array( $old_value ) && ! is_array( $new_value ) ) { |
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return array(); |
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} |
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|
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if ( ! is_array( $old_value ) ) { |
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return array_keys( $new_value ); |
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} |
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|
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if ( ! is_array( $new_value ) ) { |
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return array_keys( $old_value ); |
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} |
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|
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$diff = array_udiff_assoc( |
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$old_value, |
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$new_value, |
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function( $value1, $value2 ) { |
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return maybe_serialize( $value1 ) !== maybe_serialize( $value2 ); |
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} |
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); |
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|
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$result = array_keys( $diff ); |
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|
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// find unexisting keys in old or new value |
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$common_keys = array_keys( array_intersect_key( $old_value, $new_value ) ); |
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$unique_keys_old = array_values( array_diff( array_keys( $old_value ), $common_keys ) ); |
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$unique_keys_new = array_values( array_diff( array_keys( $new_value ), $common_keys ) ); |
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$result = array_merge( $result, $unique_keys_old, $unique_keys_new ); |
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|
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// remove numeric indexes |
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$result = array_filter( |
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$result, |
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function( $value ) { |
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// check if is not valid number (is_int, is_numeric and ctype_digit are not enough) |
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return (string) (int) $value !== (string) $value; |
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} |
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); |
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|
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$result = array_values( array_unique( $result ) ); |
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|
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if ( false === $deep ) { |
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return $result; // Return an numerical based array with changed TOP PARENT keys only |
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} |
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|
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$result = array_fill_keys( $result, null ); |
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|
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foreach ( $result as $key => $val ) { |
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if ( in_array( $key, $unique_keys_old ) ) { |
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$result[ $key ] = false; // Removed |
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} |
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elseif ( in_array( $key, $unique_keys_new ) ) { |
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$result[ $key ] = true; // Added |
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} |
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elseif ( $deep ) { // Changed, find what changed, only if we're allowed to explore a new level |
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if ( is_array( $old_value[ $key ] ) && is_array( $new_value[ $key ] ) ) { |
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$inner = array(); |
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$parent = $key; |
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$deep--; |
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$changed = self::get_changed_keys( $old_value[ $key ], $new_value[ $key ], $deep ); |
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foreach ( $changed as $child => $change ) { |
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$inner[ $parent . '::' . $child ] = $change; |
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} |
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$result[ $key ] = 0; // Changed parent which has a changed children |
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$result = array_merge( $result, $inner ); |
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} |
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} |
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} |
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|
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return $result; |
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} |
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|
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/** |
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* Allow connectors to determine if their dependencies is satisfied or not |
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* |
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* @return bool |
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*/ |
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public static function is_dependency_satisfied() { |
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return true; |
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} |
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|
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} |
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|
