<?php

/*
 * Copyright 2012 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();
  }

  public function shouldAppearOnRevisionList() {
    return true;
  }

  public function renderHeaderForRevisionList() {
    return 'Author';
  }

  public function renderValueForRevisionList(DifferentialRevision $revision) {
    return $this->getHandle($revision->getAuthorPHID())->renderLink();
  }

  public function getRequiredHandlePHIDsForRevisionList(
    DifferentialRevision $revision) {
    return array($revision->getAuthorPHID());
  }

}
