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File Content: `ActionScheduler_Versions.php`

<?php

/**
 * Class ActionScheduler_Versions
 */
class ActionScheduler_Versions {
	/**
	 * @var ActionScheduler_Versions
	 */
	private static $instance = NULL;

	private $versions = array();

	public function register( $version_string, $initialization_callback ) {
		if ( isset($this->versions[$version_string]) ) {
			return FALSE;
		}
		$this->versions[$version_string] = $initialization_callback;
		return TRUE;
	}

	public function get_versions() {
		return $this->versions;
	}

	public function latest_version() {
		$keys = array_keys($this->versions);
		if ( empty($keys) ) {
			return false;
		}
		uasort( $keys, 'version_compare' );
		return end($keys);
	}

	public function latest_version_callback() {
		$latest = $this->latest_version();
		if ( empty($latest) || !isset($this->versions[$latest]) ) {
			return '__return_null';
		}
		return $this->versions[$latest];
	}

	/**
	 * @return ActionScheduler_Versions
	 * @codeCoverageIgnore
	 */
	public static function instance() {
		if ( empty(self::$instance) ) {
			self::$instance = new self();
		}
		return self::$instance;
	}

	/**
	 * @codeCoverageIgnore
	 */
	public static function initialize_latest_version() {
		$self = self::instance();
		call_user_func($self->latest_version_callback());
	}
}

Name	Size	Permission
WP_CLI	---	0755
abstracts	---	0755
actions	---	0755
data-stores	---	0755
migration	---	0755
schedules	---	0755
schema	---	0755
ActionScheduler_ActionClaim.php	374 bytes	0644
ActionScheduler_ActionFactory.php	16113 bytes	0644
ActionScheduler_AdminView.php	9043 bytes	0644
ActionScheduler_AsyncRequest_QueueRunner.php	2221 bytes	0644
ActionScheduler_Compatibility.php	3684 bytes	0644
ActionScheduler_DataController.php	5275 bytes	0644
ActionScheduler_DateTime.php	1670 bytes	0644
ActionScheduler_Exception.php	207 bytes	0644
ActionScheduler_FatalErrorMonitor.php	2023 bytes	0644
ActionScheduler_InvalidActionException.php	1267 bytes	0644
ActionScheduler_ListTable.php	20996 bytes	0644
ActionScheduler_LogEntry.php	1764 bytes	0644
ActionScheduler_NullLogEntry.php	219 bytes	0644
ActionScheduler_OptionLock.php	4073 bytes	0644
ActionScheduler_QueueCleaner.php	7895 bytes	0644
ActionScheduler_QueueRunner.php	9020 bytes	0644
ActionScheduler_Versions.php	1263 bytes	0644
ActionScheduler_WPCommentCleaner.php	4398 bytes	0644
ActionScheduler_wcSystemStatus.php	5264 bytes	0644

Name

Size

Permission

Action

WP_CLI

---

0755