PhabricatorAudioDocumentEngine.php
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	<?php

	final class PhabricatorAudioDocumentEngine
	extends PhabricatorDocumentEngine {

	const ENGINEKEY = 'audio';

	public function getViewAsLabel(PhabricatorDocumentRef $ref) {
	return pht('View as Audio');
	}

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

	protected function getByteLengthLimit() {
	return null;
	}

	protected function canRenderDocumentType(PhabricatorDocumentRef $ref) {
	$file = $ref->getFile();
	if ($file) {
	return $file->isAudio();
	}

	$viewable_types = PhabricatorEnv::getEnvConfig('files.viewable-mime-types');
	$viewable_types = array_keys($viewable_types);

	$audio_types = PhabricatorEnv::getEnvConfig('files.audio-mime-types');
	$audio_types = array_keys($audio_types);

	return
	$ref->hasAnyMimeType($viewable_types) &&
	$ref->hasAnyMimeType($audio_types);
	}

	protected function newDocumentContent(PhabricatorDocumentRef $ref) {
	$file = $ref->getFile();
	if ($file) {
	$source_uri = $file->getViewURI();
	} else {
	throw new PhutilMethodNotImplementedException();
	}

	$mime_type = $ref->getMimeType();

	$audio = phutil_tag(
	'audio',
	array(
	'controls' => 'controls',
	),
	phutil_tag(
	'source',
	array(
	'src' => $source_uri,
	'type' => $mime_type,
	)));

	$container = phutil_tag(
	'div',
	array(
	'class' => 'document-engine-audio',
	),
	$audio);

	return $container;
	}

	}