DifferentialAuthorFieldSpecification.php
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	<?php

	/*
	* Copyright 2011 Facebook, Inc.
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	final class DifferentialAuthorFieldSpecification
	extends DifferentialFieldSpecification {

	public function shouldAppearOnRevisionView() {
	return true;
	}

	public function getRequiredHandlePHIDsForRevisionView() {
	return array($this->getAuthorPHID());
	}

	public function renderLabelForRevisionView() {
	return 'Author:';
	}

	public function renderValueForRevisionView() {
	$author_phid = $this->getAuthorPHID();
	$handle = $this->getHandle($author_phid);

	return $handle->renderLink();
	}

	private function getAuthorPHID() {
	$revision = $this->getRevision();
	return $revision->getAuthorPHID();
	}

	}