PhabricatorDocumentEngine.php
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PhabricatorDocumentEngine.php
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	<?php

	abstract class PhabricatorDocumentEngine
	extends Phobject {

	private $viewer;

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

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

	final public function canRenderDocument(PhabricatorDocumentRef $ref) {
	return $this->canRenderDocumentType($ref);
	}

	abstract protected function canRenderDocumentType(
	PhabricatorDocumentRef $ref);

	final public function newDocument(PhabricatorDocumentRef $ref) {
	return $this->newDocumentContent($ref);
	}

	final public function newDocumentIcon(PhabricatorDocumentRef $ref) {
	return id(new PHUIIconView())
	->setIcon($this->getDocumentIconIcon($ref));
	}

	abstract protected function newDocumentContent(
	PhabricatorDocumentRef $ref);

	protected function getDocumentIconIcon(PhabricatorDocumentRef $ref) {
	return 'fa-file-o';
	}

	final public function getDocumentEngineKey() {
	return $this->getPhobjectClassConstant('ENGINEKEY');
	}

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

	final public function newSortVector(PhabricatorDocumentRef $ref) {
	$content_score = $this->getContentScore($ref);

	return id(new PhutilSortVector())
	->addInt(-$content_score);
	}

	protected function getContentScore() {
	return 2000;
	}

	}