PhabricatorMacroFileTransaction.php
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PhabricatorMacroFileTransaction.php
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	<?php

	final class PhabricatorMacroFileTransaction
	extends PhabricatorMacroTransactionType {

	const TRANSACTIONTYPE = 'macro:file';

	public function generateOldValue($object) {
	return $object->getFilePHID();
	}

	public function applyInternalEffects($object, $value) {
	$object->setFilePHID($value);
	}

	public function extractFilePHIDs($object, $value) {
	return array($value);
	}

	public function getTitle() {
	return pht(
	'%s changed the image for this macro.',
	$this->renderAuthor());
	}

	public function getTitleForFeed() {
	return pht(
	'%s changed the image for %s.',
	$this->renderAuthor(),
	$this->renderObject());
	}

	public function validateTransactions($object, array $xactions) {
	$errors = array();
	$viewer = $this->getActor();

	$old_phid = $object->getFilePHID();

	foreach ($xactions as $xaction) {
	$file_phid = $xaction->getNewValue();

	if (!$old_phid) {
	if ($this->isEmptyTextTransaction($file_phid, $xactions)) {
	$errors[] = $this->newRequiredError(
	pht('Image macros must have a file.'));
	return $errors;
	}
	}

	// Only validate if file was uploaded
	if ($file_phid) {
	$file = id(new PhabricatorFileQuery())
	->setViewer($viewer)
	->withPHIDs(array($file_phid))
	->executeOne();

	if (!$file) {
	$errors[] = $this->newInvalidError(
	pht('"%s" is not a valid file PHID.',
	$file_phid));
	} else {
	if (!$file->isViewableImage()) {
	$mime_type = $file->getMimeType();
	$errors[] = $this->newInvalidError(
	pht('File mime type of "%s" is not a valid viewable image.',
	$mime_type));
	}
	}
	}

	}

	return $errors;
	}

	public function getIcon() {
	return 'fa-file-image-o';
	}

	}