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<?php |
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|
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/** |
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* Class ActionScheduler_Versions |
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*/ |
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class ActionScheduler_Versions { |
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/** |
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* @var ActionScheduler_Versions |
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*/ |
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private static $instance = null; |
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|
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private $versions = array(); |
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|
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public function register( $version_string, $initialization_callback ) { |
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if ( isset( $this->versions[ $version_string ] ) ) { |
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return false; |
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} |
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$this->versions[ $version_string ] = $initialization_callback; |
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return true; |
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} |
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|
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public function get_versions() { |
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return $this->versions; |
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} |
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|
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public function latest_version() { |
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$keys = array_keys( $this->versions ); |
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if ( empty( $keys ) ) { |
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return false; |
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} |
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uasort( $keys, 'version_compare' ); |
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return end( $keys ); |
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} |
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|
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public function latest_version_callback() { |
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$latest = $this->latest_version(); |
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if ( empty( $latest ) || ! isset( $this->versions[ $latest ] ) ) { |
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return '__return_null'; |
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} |
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return $this->versions[ $latest ]; |
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} |
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|
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/** |
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* @return ActionScheduler_Versions |
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* @codeCoverageIgnore |
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*/ |
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public static function instance() { |
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if ( empty( self::$instance ) ) { |
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self::$instance = new self(); |
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} |
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return self::$instance; |
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} |
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|
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/** |
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* @codeCoverageIgnore |
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*/ |
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public static function initialize_latest_version() { |
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$self = self::instance(); |
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call_user_func( $self->latest_version_callback() ); |
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} |
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} |
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