DrydockLogType.php
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	<?php

	abstract class DrydockLogType extends Phobject {

	private $viewer;
	private $log;

	abstract public function getLogTypeName();
	abstract public function getLogTypeIcon(array $data);
	abstract public function renderLog(array $data);

	public function setViewer(PhabricatorUser $viewer) {
	$this->viewer = $viewer;
	return $this;
	}

	public function getViewer() {
	return $this->viewer;
	}

	final public function setLog(DrydockLog $log) {
	$this->log = $log;
	return $this;
	}

	final public function getLog() {
	return $this->log;
	}

	final public function getLogTypeConstant() {
	$class = new ReflectionClass($this);

	$const = $class->getConstant('LOGCONST');
	if ($const === false) {
	throw new Exception(
	pht(
	'"%s" class "%s" must define a "%s" property.',
	__CLASS__,
	get_class($this),
	'LOGCONST'));
	}

	$limit = self::getLogTypeConstantByteLimit();
	if (!is_string($const) \|\| (strlen($const) > $limit)) {
	throw new Exception(
	pht(
	'"%s" class "%s" has an invalid "%s" property. Field constants '.
	'must be strings and no more than %s bytes in length.',
	__CLASS__,
	get_class($this),
	'LOGCONST',
	new PhutilNumber($limit)));
	}

	return $const;
	}

	final private static function getLogTypeConstantByteLimit() {
	return 64;
	}

	final public static function getAllLogTypes() {
	return id(new PhutilClassMapQuery())
	->setAncestorClass(__CLASS__)
	->setUniqueMethod('getLogTypeConstant')
	->execute();
	}

	}