DifferentialRevisionViewController.php
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Created: Wed, Nov 27, 18:30

DifferentialRevisionViewController.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.
	*/

	class DifferentialRevisionViewController extends DifferentialController {

	private $revisionID;

	public function willProcessRequest(array $data) {
	$this->revisionID = $data['id'];
	}

	public function processRequest() {

	$request = $this->getRequest();

	$revision = id(new DifferentialRevision())->load($this->revisionID);
	if (!$revision) {
	return new Aphront404Response();
	}

	$revision->loadRelationships();

	$diffs = $revision->loadDiffs();

	$target = end($diffs);

	$changesets = $target->loadChangesets();

	$comments = $revision->loadComments();
	$comments = array_merge(
	$this->getImplicitComments($revision),
	$comments);

	$object_phids = array_merge(
	$revision->getReviewers(),
	$revision->getCCPHIDs(),
	array(
	$revision->getAuthorPHID(),
	$request->getUser()->getPHID(),
	),
	mpull($comments, 'getAuthorPHID'));

	$handles = id(new PhabricatorObjectHandleData($object_phids))
	->loadHandles();

	$revision_detail = new DifferentialRevisionDetailView();
	$revision_detail->setRevision($revision);

	$properties = $this->getRevisionProperties($revision, $target, $handles);
	$revision_detail->setProperties($properties);

	$actions = $this->getRevisionActions($revision);
	$revision_detail->setActions($actions);

	$comment_view = new DifferentialRevisionCommentListView();
	$comment_view->setComments($comments);
	$comment_view->setHandles($handles);

	$diff_history = new DifferentialRevisionUpdateHistoryView();
	$diff_history->setDiffs($diffs);

	$toc_view = new DifferentialDiffTableOfContentsView();
	$toc_view->setChangesets($changesets);

	$changeset_view = new DifferentialChangesetListView();
	$changeset_view->setChangesets($changesets);
	$changeset_view->setEditable(true);
	$changeset_view->setRevision($revision);

	$comment_form = new DifferentialAddCommentView();
	$comment_form->setRevision($revision);
	$comment_form->setActions($this->getRevisionCommentActions($revision));
	$comment_form->setActionURI('/differential/comment/save/');
	$comment_form->setUser($request->getUser());

	return $this->buildStandardPageResponse(
	'<div class="differential-primary-pane">'.
	$revision_detail->render().
	$comment_view->render().
	$diff_history->render().
	$toc_view->render().
	$changeset_view->render().
	$comment_form->render().
	'</div>',
	array(
	'title' => $revision->getTitle(),
	));
	}

	private function getImplicitComments(DifferentialRevision $revision) {

	$template = new DifferentialComment();
	$template->setAuthorPHID($revision->getAuthorPHID());
	$template->setRevisionID($revision->getID());
	$template->setDateCreated($revision->getDateCreated());

	$comments = array();

	if (strlen($revision->getSummary())) {
	$summary_comment = clone $template;
	$summary_comment->setContent($revision->getSummary());
	$summary_comment->setAction(DifferentialAction::ACTION_SUMMARIZE);
	$comments[] = $summary_comment;
	}

	if (strlen($revision->getTestPlan())) {
	$testplan_comment = clone $template;
	$testplan_comment->setContent($revision->getTestPlan());
	$testplan_comment->setAction(DifferentialAction::ACTION_TESTPLAN);
	$comments[] = $testplan_comment;
	}

	return $comments;
	}

	private function getRevisionProperties(
	DifferentialRevision $revision,
	DifferentialDiff $diff,
	array $handles) {

	$properties = array();

	$status = $revision->getStatus();
	$status = DifferentialRevisionStatus::getNameForRevisionStatus($status);
	$properties['Revision Status'] = '<strong>'.$status.'</strong>';

	$author = $handles[$revision->getAuthorPHID()];
	$properties['Author'] = $author->renderLink();

	$properties['Reviewers'] = $this->renderHandleLinkList(
	array_select_keys(
	$handles,
	$revision->getReviewers()));

	$properties['CCs'] = $this->renderHandleLinkList(
	array_select_keys(
	$handles,
	$revision->getCCPHIDs()));

	$path = $diff->getSourcePath();
	if ($path) {
	$branch = $diff->getBranch() ? ' (' . $diff->getBranch() . ')' : '';
	$host = $diff->getSourceMachine();
	if ($host) {
	$host .= ':';
	}
	$properties['Path'] = phutil_escape_html("{$host}{$path} {$branch}");
	}


	$properties['Lint'] = 'TODO';
	$properties['Unit'] = 'TODO';

	return $properties;
	}

	private function getRevisionActions(DifferentialRevision $revision) {
	$viewer_phid = $this->getRequest()->getUser()->getPHID();
	$viewer_is_owner = ($revision->getAuthorPHID() == $viewer_phid);
	$viewer_is_reviewer = in_array($viewer_phid, $revision->getReviewers());
	$viewer_is_cc = in_array($viewer_phid, $revision->getCCPHIDs());
	$status = $revision->getStatus();
	$revision_id = $revision->getID();
	$revision_phid = $revision->getPHID();

	$links = array();

	if ($viewer_is_owner) {
	$links[] = array(
	'class' => 'revision-edit',
	'href' => "/differential/revision/edit/{$revision_id}/",
	'name' => 'Edit Revision',
	);
	}

	if (!$viewer_is_owner && !$viewer_is_reviewer) {
	$action = $viewer_is_cc ? 'rem' : 'add';
	$links[] = array(
	'class' => $viewer_is_cc ? 'subscribe-rem' : 'subscribe-add',
	'href' => "/differential/subscribe/{$action}/{$revision_id}/",
	'name' => $viewer_is_cc ? 'Unsubscribe' : 'Subscribe',
	);
	} else {
	$links[] = array(
	'class' => 'subscribe-rem unavailable',
	'name' => 'Automatically Subscribed',
	);
	}

	$links[] = array(
	'class' => 'transcripts-metamta',
	'name' => 'MetaMTA Transcripts',
	'href' => "/mail/?phid={$revision_phid}",
	);

	return $links;
	}


	private function renderHandleLinkList(array $list) {
	if (empty($list)) {
	return '<em>None</em>';
	}
	return implode(', ', mpull($list, 'renderLink'));
	}

	private function getRevisionCommentActions(DifferentialRevision $revision) {

	$actions = array(
	DifferentialAction::ACTION_COMMENT => true,
	);

	$viewer_phid = $this->getRequest()->getUser()->getPHID();
	$viewer_is_owner = ($viewer_phid == $revision->getAuthorPHID());

	if ($viewer_is_owner) {
	switch ($revision->getStatus()) {
	case DifferentialRevisionStatus::NEEDS_REVIEW:
	$actions[DifferentialAction::ACTION_ABANDON] = true;
	break;
	case DifferentialRevisionStatus::NEEDS_REVISION:
	case DifferentialRevisionStatus::ACCEPTED:
	$actions[DifferentialAction::ACTION_ABANDON] = true;
	$actions[DifferentialAction::ACTION_REQUEST] = true;
	break;
	case DifferentialRevisionStatus::COMMITTED:
	break;
	case DifferentialRevisionStatus::ABANDONED:
	$actions[DifferentialAction::ACTION_RECLAIM] = true;
	break;
	}
	} else {
	switch ($revision->getStatus()) {
	case DifferentialRevisionStatus::NEEDS_REVIEW:
	$actions[DifferentialAction::ACTION_ACCEPT] = true;
	$actions[DifferentialAction::ACTION_REJECT] = true;
	break;
	case DifferentialRevisionStatus::NEEDS_REVISION:
	$actions[DifferentialAction::ACTION_ACCEPT] = true;
	break;
	case DifferentialRevisionStatus::ACCEPTED:
	$actions[DifferentialAction::ACTION_REJECT] = true;
	break;
	case DifferentialRevisionStatus::COMMITTED:
	case DifferentialRevisionStatus::ABANDONED:
	break;
	}
	}

	$actions[DifferentialAction::ACTION_ADDREVIEWERS] = true;

	return array_keys($actions);
	}

	}
	/*


	protected function getRevisionActions(DifferentialRevision $revision) {

	$viewer_id = $this->getRequest()->getViewerContext()->getUserID();
	$viewer_is_owner = ($viewer_id == $revision->getOwnerID());
	$viewer_is_reviewer =
	((array_search($viewer_id, $revision->getReviewers())) !== false);
	$viewer_is_cc =
	((array_search($viewer_id, $revision->getCCFBIDs())) !== false);
	$status = $revision->getStatus();

	$links = array();

	if (!$viewer_is_owner && !$viewer_is_reviewer) {
	$action = $viewer_is_cc
	? 'rem'
	: 'add';
	$revision_id = $revision->getID();
	$href = "/differential/subscribe/{$action}/{$revision_id}";
	$links[] = array(
	$viewer_is_cc ? 'subscribe-disabled' : 'subscribe-enabled',
	<a href={$href}>{$viewer_is_cc ? 'Unsubscribe' : 'Subscribe'}</a>,
	);
	} else {
	$links[] = array(
	'subscribe-disabled unavailable',
	<a>Automatically Subscribed</a>,
	);
	}

	$blast_uri = RedirectURI(
	'/intern/differential/?action=tasks&fbid='.$revision->getFBID())
	->setTier('intern');
	$links[] = array(
	'tasks',
	<a href={$blast_uri}>Edit Tasks</a>,
	);

	$engineering_repository_id = RepositoryRef::getByCallsign('E')->getID();
	$svn_revision = $revision->getSVNRevision();
	if ($status == DifferentialConstants::COMMITTED &&
	$svn_revision &&
	$revision->getRepositoryID() == $engineering_repository_id) {
	$href = '/intern/push/request.php?rev='.$svn_revision;
	$href = RedirectURI($href)->setTier('intern');
	$links[] = array(
	'merge',
	<a href={$href} id="ask_for_merge_link">Ask for Merge</a>,
	);
	}

	$links[] = array(
	'herald-transcript',
	<a href={"/herald/transcript/?fbid=".$revision->getFBID()}
	>Herald Transcripts</a>,
	);
	$links[] = array(
	'metamta-transcript',
	<a href={"/mail/?view=all&fbid=".$revision->getFBID()}
	>MetaMTA Transcripts</a>,
	);


	$list = <ul class="differential-actions" />;
	foreach ($links as $link) {
	list($class, $tag) = $link;
	$list->appendChild(<li class={$class}>{$tag}</li>);
	}

	return $list;



	/*
	// TODO
	// $sandcastle = $this->getSandcastleURI($diff);
	// if ($sandcastle) {
	// $fields['Sandcastle'] = <a href={$sandcastle}>{$sandcastle}</a>;
	// }

	$path = $diff->getSourcePath();
	if ($path) {
	$host = $diff->getSourceMachine();
	$branch = $diff->getGitBranch() ? ' (' . $diff->getGitBranch() . ')' : '';

	if ($host) {
	// TODO
	// $user = $handles[$this->getRequest()->getViewerContext()->getUserID()]
	// ->getName();
	$user = 'TODO';
	$fields['Path'] =
	<x:frag>
	<a href={"ssh://{$user}@{$host}"}>{$host}</a>:{$path}{$branch}
	</x:frag>;
	} else {
	$fields['Path'] = $path;
	}
	}

	$reviewer_links = array();
	foreach ($revision->getReviewers() as $reviewer) {
	$reviewer_links[] = <tools:handle handle={$handles[$reviewer]}
	link={true} />;
	}
	if ($reviewer_links) {
	$fields['Reviewers'] = array_implode(', ', $reviewer_links);
	} else {
	$fields['Reviewers'] = <em>None</em>;
	}

	$ccs = $revision->getCCFBIDs();
	if ($ccs) {
	$links = array();
	foreach ($ccs as $cc) {
	$links[] = <tools:handle handle={$handles[$cc]}
	link={true} />;
	}
	$fields['CCs'] = array_implode(', ', $links);
	}

	$blame_rev = $revision->getSvnBlameRevision();
	if ($blame_rev) {
	if ($revision->getRepositoryRef() && is_numeric($blame_rev)) {
	$ref = new RevisionRef($revision->getRepositoryRef(), $blame_rev);
	$fields['Blame Revision'] =
	<a href={URI($ref->getDetailURL())}>
	{$ref->getName()}
	</a>;
	} else {
	$fields['Blame Revision'] = $blame_rev;
	}
	}

	$tasks = $revision->getTaskHandles();

	if ($tasks) {
	$links = array();
	foreach ($tasks as $task) {
	$links[] = <tools:handle handle={$task} link={true} />;
	}
	$fields['Tasks'] = array_implode(<br />, $links);
	}

	$bugzilla_id = $revision->getBugzillaID();
	if ($bugzilla_id) {
	$href = 'http://bugs.developers.facebook.com/show_bug.cgi?id='.
	$bugzilla_id;
	$fields['Bugzilla'] = <a href={$href}>{'#'.$bugzilla_id}</a>;
	}

	$fields['Apply Patch'] = <tt>arc patch --revision {$revision->getID()}</tt>;

	if ($diff->getParentRevisionID()) {
	$parent = id(new DifferentialRevision())->load(
	$diff->getParentRevisionID());
	if ($parent) {
	$fields['Depends On'] =
	<a href={$parent->getURI()}>
	D{$parent->getID()}: {$parent->getName()}
	</a>;
	}
	}

	$star = <span class="star">{"\xE2\x98\x85"}</span>;

	Javelin::initBehavior('differential-star-more');

	switch ($diff->getLinted()) {
	case Diff::LINT_FAIL:
	$more = $this->renderDiffPropertyMoreLink($diff, 'lint');
	$fields['Lint'] =
	<x:frag>
	<span class="star-warn">{$star} Lint Failures</span>
	{$more}
	</x:frag>;
	break;
	case Diff::LINT_WARNINGS:
	$more = $this->renderDiffPropertyMoreLink($diff, 'lint');
	$fields['Lint'] =
	<x:frag>
	<span class="star-warn">{$star} Lint Warnings</span>
	{$more}
	</x:frag>;
	break;
	case Diff::LINT_OKAY:
	$fields['Lint'] =
	<span class="star-okay">{$star} Lint Free</span>;
	break;
	default:
	case Diff::LINT_NO:
	$fields['Lint'] =
	<span class="star-none">{$star} Not Linted</span>;
	break;
	}

	$unit_details = false;
	switch ($diff->getUnitTested()) {
	case Diff::UNIT_FAIL:
	$fields['Unit Tests'] =
	<span class="star-warn">{$star} Unit Test Failures</span>;
	$unit_details = true;
	break;
	case Diff::UNIT_WARN:
	$fields['Unit Tests'] =
	<span class="star-warn">{$star} Unit Test Warnings</span>;
	$unit_details = true;
	break;
	case Diff::UNIT_OKAY:
	$fields['Unit Tests'] =
	<span class="star-okay">{$star} Unit Tests Passed</span>;
	$unit_details = true;
	break;
	case Diff::UNIT_NO_TESTS:
	$fields['Unit Tests'] =
	<span class="star-none">{$star} No Test Coverage</span>;
	break;
	case Diff::UNIT_NO:
	default:
	$fields['Unit Tests'] =
	<span class="star-none">{$star} Not Unit Tested</span>;
	break;
	}

	if ($unit_details) {
	$fields['Unit Tests'] =
	<x:frag>
	{$fields['Unit Tests']}
	{$this->renderDiffPropertyMoreLink($diff, 'unit')}
	</x:frag>;
	}

	$platform_impact = $revision->getPlatformImpact();
	if ($platform_impact) {
	$fields['Platform Impact'] =
	<text linebreaks="true">{$platform_impact}</text>;
	}

	return $fields;
	}


	}

	/*



	protected function getSandcastleURI(Diff $diff) {
	$uri = $this->getDiffProperty($diff, 'facebook:sandcastle_uri');
	if (!$uri) {
	$uri = $diff->getSandboxURL();
	}
	return $uri;
	}

	protected function getDiffProperty(Diff $diff, $property, $default = null) {
	$diff_id = $diff->getID();
	if (empty($this->diffProperties[$diff_id])) {
	$props = id(new DifferentialDiffProperty())
	->loadAllWhere('diffID = %s', $diff_id);
	$dict = array_pull($props, 'getData', 'getName');
	$this->diffProperties[$diff_id] = $dict;
	}
	return idx($this->diffProperties[$diff_id], $property, $default);
	}

	public function process() {
	$uri = $this->getRequest()->getPath();
	if (starts_with($uri, '/d')) {
	return <alite:redirect uri={strtoupper($uri)}/>;
	}

	$revision = id(new DifferentialRevision())->load($this->revisionID);
	if (!$revision) {
	throw new Exception("Bad revision ID.");
	}

	$diffs = id(new Diff())->loadAllWhere(
	'revisionID = %d',
	$revision->getID());
	$diffs = array_psort($diffs, 'getID');

	$request = $this->getRequest();
	$new = $request->getInt('new');
	$old = $request->getInt('old');

	if (($new \|\| $old) && $new <= $old) {
	throw new Exception(
	"You can only view the diff of an older update relative to a newer ".
	"update.");
	}

	if ($new && empty($diffs[$new])) {
	throw new Exception(
	"The 'new' diff does not exist.");
	} else if ($new) {
	$diff = $diffs[$new];
	} else {
	$diff = end($diffs);
	if (!$diff) {
	throw new Exception("No diff attached to this revision?");
	}
	$new = $diff->getID();
	}

	$target_diff = $diff;

	if ($old && empty($diffs[$old])) {
	throw new Exception(
	"The 'old' diff does not exist.");
	}

	$rows = array(array('Base', '', true, false, null,
	$diff->getSourceControlBaseRevision()
	? $diff->getSourceControlBaseRevision()
	: <em>Master</em>));
	$idx = 0;
	foreach ($diffs as $cdiff) {
	$rows[] = array(
	'Diff '.(++$idx),
	$cdiff->getID(),
	$cdiff->getID() != max(array_pull($diffs, 'getID')),
	true,
	$cdiff->getDateCreated(),
	$cdiff->getDescription()
	? $cdiff->getDescription()
	: <em>No description available.</em>,
	$cdiff->getUnitTested(),
	$cdiff->getLinted());
	}

	$diff_table =
	<table class="differential-diff-differ">
	<tr>
	<th>Diff</th>
	<th>Diff ID</th>
	<th>Description</th>
	<th>Age</th>
	<th>Lint</th>
	<th>Unit</th>
	</tr>
	</table>;
	$ii = 0;

	$old_ids = array();
	foreach ($rows as $row) {
	$xold = null;
	if ($row[2]) {
	$lradio = <input name="old" value={$row[1]} type="radio"
	disabled={$row[1] >= $new}
	checked={$old == $row[1]} />;
	if ($old == $row[1]) {
	$xold = 'old-now';
	}
	$old_ids[] = $lradio->requireUniqueID();
	} else {
	$lradio = null;
	}
	$xnew = null;
	if ($row[3]) {
	$rradio = <input name="new" value={$row[1]} type="radio"
	sigil="new-radio"
	checked={$new == $row[1]} />;
	if ($new == $row[1]) {
	$xnew = 'new-now';
	}
	} else {
	$rradio = null;
	}

	if ($row[3]) {
	$unit_star = 'star-none';
	switch ($row[6]) {
	case Diff::UNIT_FAIL:
	case Diff::UNIT_WARN: $unit_star = 'star-warn'; break;
	case Diff::UNIT_OKAY: $unit_star = 'star-okay'; break;
	}

	$lint_star = 'star-none';
	switch ($row[7]) {
	case Diff::LINT_FAIL:
	case Diff::LINT_WARNINGS: $lint_star = 'star-warn'; break;
	case Diff::LINT_OKAY: $lint_star = 'star-okay'; break;
	}

	$star = "\xE2\x98\x85";

	$unit_star =
	<span class={$unit_star}>
	<span class="star">{$star}</span>
	</span>;

	$lint_star =
	<span class={$lint_star}>
	<span class="star">{$star}</span>
	</span>;
	} else {
	$unit_star = null;
	$lint_star = null;
	}

	$diff_table->appendChild(
	<tr class={++$ii % 2 ? 'alt' : null}>
	<td class="name">{$row[0]}</td>
	<td class="diffid">{$row[1]}</td>
	<td class="desc">{$row[5]}</td>
	<td class="age">{$row[4] ? ago(time() - $row[4]) : null}</td>
	<td class="star">{$lint_star}</td>
	<td class="star">{$unit_star}</td>
	<td class={"old {$xold}"}>{$lradio}</td>
	<td class={"new {$xnew}"}>{$rradio}</td>
	</tr>);
	}

	Javelin::initBehavior('differential-diff-radios', array(
	'radios' => $old_ids,
	));

	$diff_table->appendChild(
	<tr>
	<td colspan="8" class="diff-differ-submit">
	<label>Whitespace Changes:</label>
	{id(<select name="whitespace" />)->setOptions(
	array(
	'ignore-all' => 'Ignore All',
	'ignore-trailing' => 'Ignore Trailing',
	'show-all' => 'Show All',
	), $request->getStr('whitespace'))}{' '}
	<button type="submit">Show Diff</button>
	</td>
	</tr>);

	$diff_table =
	<div class="differential-table-of-contents">
	<h1>Revision Update History</h1>
	<form action={URI::getRequestURI()} method="get">
	{$diff_table}
	</form>
	</div>;


	$load_ids = array_filter(array($old, $diff->getID()));

	$viewer_id = $this->getRequest()->getViewerContext()->getUserID();

	$raw_objects = queryfx_all(
	smc_get_db('cdb.differential', 'r'),
	'SELECT * FROM changeset WHERE changeset.diffID IN (%Ld)',
	$load_ids);

	$raw_objects = array_group($raw_objects, 'diffID');
	$objects = $raw_objects[$diff->getID()];

	if (!$objects) {
	$changesets = array();
	} else {
	$changesets = id(new DifferentialChangeset())->loadAllFromArray($objects);
	}

	$against_warn = null;
	$against_map = array();
	$visible_changesets = array();
	if ($old) {
	$old_diff = $diffs[$old];
	$new_diff = $diff;
	$old_path = $old_diff->getSourcePath();
	$new_path = $new_diff->getSourcePath();

	$old_prefix = null;
	$new_prefix = null;
	if ((strlen($old_path) < strlen($new_path)) &&
	(!strncmp($old_path, $new_path, strlen($old_path)))) {
	$old_prefix = substr($new_path, strlen($old_path));
	}
	if ((strlen($new_path) < strlen($old_path)) &&
	(!strncmp($old_path, $new_path, strlen($new_path)))) {
	$new_prefix = substr($old_path, strlen($new_path));
	}

	$old_changesets = id(new DifferentialChangeset())
	->loadAllFromArray($raw_objects[$old]);
	$old_changesets = array_pull($old_changesets, null, 'getFilename');
	if ($new_prefix) {
	$rekeyed_map = array();
	foreach ($old_changesets as $key => $value) {
	$rekeyed_map[$new_prefix.$key] = $value;
	}
	$old_changesets = $rekeyed_map;
	}

	foreach ($changesets as $key => $changeset) {
	$file = $old_prefix.$changeset->getFilename();
	if (isset($old_changesets[$file])) {
	$checksum = $changeset->getChecksum();
	if ($checksum !== null &&
	$checksum == $old_changesets[$file]->getChecksum()) {
	unset($changesets[$key]);
	unset($old_changesets[$file]);
	} else {
	$against_map[$changeset->getID()] = $old_changesets[$file]->getID();
	unset($old_changesets[$file]);
	}
	}
	}

	foreach ($old_changesets as $changeset) {
	$changesets[$changeset->getID()] = $changeset;
	$against_map[$changeset->getID()] = -1;
	}

	$against_warn =
	<tools:notice title="NOTE - Diff of Diffs">
	You are viewing a synthetic diff between two previous diffs in this
	revision. You can not add new inline comments (for now).
	</tools:notice>;
	} else {
	$visible_changesets = array_pull($changesets, 'getID');
	}

	$changesets = array_psort($changesets, 'getSortKey');
	$all_changesets = $changesets;

	$warning = null;
	$limit = 100;
	if (count($changesets) > $limit && !$this->getRequest()->getStr('large')) {
	$count = number_format(count($changesets));
	$warning =
	<tools:notice title="Very Large Diff">
	This diff is extremely large and affects {$count} files. Only the
	first {number_format($limit)} files are shown.
	<strong>
	<a href={$revision->getURI().'?large=true'}>Show All Files</a>
	</strong>
	</tools:notice>;
	$changesets = array_slice($changesets, 0, $limit);
	if (!$old) {
	$visible_changesets = array_pull($changesets, 'getID');
	}
	}

	$detail_view =
	<differential:changeset-detail-view
	changesets={$changesets}
	revision={$revision}
	against={$against_map}
	edit={empty($against_map)}
	whitespace={$request->getStr('whitespace')} />;

	$table_of_contents =
	<differential:changeset-table-of-contents
	changesets={$all_changesets} />;

	$implied_feedback = array();
	foreach (array(
	'summarize' => $revision->getSummary(),
	'testplan' => $revision->getTestPlan(),
	'annotate' => $revision->getNotes(),
	) as $type => $text) {
	if (!strlen($text)) {
	continue;
	}
	$implied_feedback[] = id(new DifferentialFeedback())
	->setUserID($revision->getOwnerID())
	->setAction($type)
	->setDateCreated($revision->getDateCreated())
	->setContent($text);
	}

	$feedback = id(new DifferentialFeedback())->loadAllWithRevision($revision);
	$feedback = array_merge($implied_feedback, $feedback);

	$inline_comments = $this->loadInlineComments($feedback, $changesets);

	$diff_map = array();
	$diffs = array_psort($diffs, 'getID');
	foreach ($diffs as $diff) {
	$diff_map[$diff->getID()] = count($diff_map) + 1;
	}
	$visible_changesets = array_fill_keys($visible_changesets, true);
	$hidden_changesets = array();
	foreach ($changesets as $changeset) {
	$id = $changeset->getID();
	if (isset($visible_changesets[$id])) {
	continue;
	}
	$hidden_changesets[$id] = $diff_map[$changeset->getDiffID()];
	}

	$revision->loadRelationships();
	$ccs = $revision->getCCFBIDs();
	$reviewers = $revision->getReviewers();

	$actors = array_pull($feedback, 'getUserID');
	$actors[] = $revision->getOwnerID();

	$tasks = array();
	assoc_get_by_type(
	$revision->getFBID(),
	22284182462, // TODO: include issue, DIFFCAMP_TASK_ASSOC
	$start = null,
	$limit = null,
	$pending = true,
	$tasks);
	memcache_dispatch();
	$tasks = array_keys($tasks);

	$preparer = new Preparer();
	$fbids = array_merge_fast(
	array($actors, array($viewer_id), $reviewers, $ccs, $tasks),
	true);
	$handles = array();
	$handle_data = id(new ToolsHandleData($fbids, $handles))
	->needNames()
	->needAlternateNames()
	->needAlternateIDs()
	->needThumbnails();
	$preparer->waitFor($handle_data);
	$preparer->go();

	$revision->attachTaskHandles(array_select_keys($handles, $tasks));

	$inline_comments = array_group($inline_comments, 'getFeedbackID');

	$engine = new RemarkupEngine();
	$engine->enableFeature(RemarkupEngine::FEATURE_GUESS_IMAGES);
	$engine->enableFeature(RemarkupEngine::FEATURE_YOUTUBE);
	$engine->setCurrentSandcastle($this->getSandcastleURI($target_diff));
	$feed = array();
	foreach ($feedback as $comment) {
	$inlines = null;
	if (isset($inline_comments[$comment->getID()])) {
	$inlines = $inline_comments[$comment->getID()];
	}
	$feed[] =
	<differential:feedback
	feedback={$comment}
	handle={$handles[$comment->getUserID()]}
	engine={$engine}
	inline={$inlines}
	changesets={$changesets}
	hidden={$hidden_changesets} />;
	}

	$feed = $this->renderFeedbackList($feed, $feedback, $viewer_id);

	$fields = $this->getDetailFields($revision, $diff, $handles);
	$table = <table class="differential-revision-properties" />;
	foreach ($fields as $key => $value) {
	$table->appendChild(
	<tr>
	<th>{$key}:</th><td>{$value}</td>
	</tr>);
	}

	$quick_links = $this->getQuickLinks($revision);

	$edit_link = null;
	if ($revision->getOwnerID() == $viewer_id) {
	$edit_link = '/differential/revision/edit/'.$revision->getID().'/';
	$edit_link =
	<x:frag>
	{' '}(<a href={$edit_link}>Edit Revision</a>)
	</x:frag>;
	}

	$info =
	<div class="differential-revision-information">
	<div class="differential-revision-actions">
	{$quick_links}
	</div>
	<div class="differential-revision-detail">
	<h1>{$revision->getName()}{$edit_link}</h1>
	{$table}
	</div>
	</div>;

	$actions = $this->getRevisionActions($revision);
	$revision_id = $revision->getID();

	Javelin::initBehavior(
	'differential-feedback-preview',
	array(
	'uri' => '/differential/preview/'.$revision->getFBID().'/',
	'preview' => 'overall-feedback-preview',
	'action' => 'feedback-action',
	'content' => 'feedback-content',
	));

	Javelin::initBehavior(
	'differential-inline-comment-preview',
	array(
	'uri' => '/differential/inline-preview/'.$revision_id.'/'.$new.'/',
	'preview' => 'inline-comment-preview',
	));

	$content = SavedCopy::loadData(
	$viewer_id,
	SavedCopy::Type_DifferentialRevisionFeedback,
	$revision->getFBID());


	$inline_comment_container =
	<div id="inline-comment-preview"><p>Loading...</p></div>;

	$feedback = id(new DifferentialFeedback())
	->setAction('none')
	->setUserID($viewer_id)
	->setContent($content);

	$preview =
	<div class="differential-feedback differential-feedback-preview">
	<div id="overall-feedback-preview">
	<differential:feedback
	feedback={$feedback}
	engine={$engine}
	preview={true}
	handle={$handles[$viewer_id]} />
	</div>
	{$inline_comment_container}
	</div>;

	$syntax_link =
	<a href={'http://www.intern.facebook.com/intern/wiki/index.php' .
	'/Articles/Remarkup_Syntax_Reference'}
	target="_blank"
	tabindex="4">Remarkup Reference</a>;

	Javelin::initBehavior(
	'differential-add-reviewers',
	array(
	'src' => redirect_str('/datasource/employee/', 'tools'),
	'tokenizer' => 'reviewer-tokenizer',
	'select' => 'feedback-action',
	'row' => 'reviewer-tokenizer-row',
	));

	$feedback_form =
	<x:frag>
	<div class="differential-feedback-form">
	<tools:form
	method="post"
	action={"/differential/revision/feedback/{$revision_id}/"}>
	<h1>Provide Feedback</h1>
	<tools:fieldset>
	<tools:control type="select" label="Action">
	{id(<select name="action" id="feedback-action"
	tabindex="1" />)
	->setOptions($actions)}
	</tools:control>
	<tools:control type="text" label="Reviewers"
	style="display: none;"
	id="reviewer-tokenizer-row">
	<javelin:tokenizer-template
	id="reviewer-tokenizer"
	name="reviewers" />
	</tools:control>
	<tools:control type="textarea" label="Feedback"
	caption={$syntax_link}>
	<tools:droppable-textarea id="feedback-content" name="feedback"
	tabindex="2">
	{$content}
	</tools:droppable-textarea>
	</tools:control>
	<tools:control type="submit">
	<button type="submit"
	tabindex="3">Clowncopterize</button>
	</tools:control>
	</tools:fieldset>
	</tools:form>
	</div>
	{$preview}
	</x:frag>;

	$notice = null;
	if ($this->getRequest()->getBool('diff_changed')) {
	$notice =
	<tools:notice title="Revision Updated Recently">
	This revision was updated with a <strong>new diff</strong> while you
	were providing feedback. Your inline comments appear on the
	<strong>old diff</strong>.
	</tools:notice>;
	}

	return
	<differential:standard-page title={$revision->getName()}>
	<div class="differential-primary-pane">
	{$warning}
	{$notice}
	{$info}
	<div class="differential-feedback">
	{$feed}
	</div>
	{$diff_table}
	{$table_of_contents}
	{$against_warn}
	{$detail_view}
	{$feedback_form}
	</div>
	</differential:standard-page>;
	}

	protected function getQuickLinks(DifferentialRevision $revision) {

	$viewer_id = $this->getRequest()->getViewerContext()->getUserID();
	$viewer_is_owner = ($viewer_id == $revision->getOwnerID());
	$viewer_is_reviewer =
	((array_search($viewer_id, $revision->getReviewers())) !== false);
	$viewer_is_cc =
	((array_search($viewer_id, $revision->getCCFBIDs())) !== false);
	$status = $revision->getStatus();

	$links = array();

	if (!$viewer_is_owner && !$viewer_is_reviewer) {
	$action = $viewer_is_cc
	? 'rem'
	: 'add';
	$revision_id = $revision->getID();
	$href = "/differential/subscribe/{$action}/{$revision_id}";
	$links[] = array(
	$viewer_is_cc ? 'subscribe-disabled' : 'subscribe-enabled',
	<a href={$href}>{$viewer_is_cc ? 'Unsubscribe' : 'Subscribe'}</a>,
	);
	} else {
	$links[] = array(
	'subscribe-disabled unavailable',
	<a>Automatically Subscribed</a>,
	);
	}

	$blast_uri = RedirectURI(
	'/intern/differential/?action=blast&fbid='.$revision->getFBID())
	->setTier('intern');
	$links[] = array(
	'blast',
	<a href={$blast_uri}>Blast Revision</a>,
	);

	$blast_uri = RedirectURI(
	'/intern/differential/?action=tasks&fbid='.$revision->getFBID())
	->setTier('intern');
	$links[] = array(
	'tasks',
	<a href={$blast_uri}>Edit Tasks</a>,
	);

	if ($viewer_is_owner && false) {
	$perflab_uri = RedirectURI(
	'/intern/differential/?action=perflab&fbid='.$revision->getFBID())
	->setTier('intern');
	$links[] = array(
	'perflab',
	<a href={$perflab_uri}>Run in Perflab</a>,
	);
	}

	$engineering_repository_id = RepositoryRef::getByCallsign('E')->getID();
	$svn_revision = $revision->getSVNRevision();
	if ($status == DifferentialConstants::COMMITTED &&
	$svn_revision &&
	$revision->getRepositoryID() == $engineering_repository_id) {
	$href = '/intern/push/request.php?rev='.$svn_revision;
	$href = RedirectURI($href)->setTier('intern');
	$links[] = array(
	'merge',
	<a href={$href} id="ask_for_merge_link">Ask for Merge</a>,
	);
	}

	$links[] = array(
	'herald-transcript',
	<a href={"/herald/transcript/?fbid=".$revision->getFBID()}
	>Herald Transcripts</a>,
	);
	$links[] = array(
	'metamta-transcript',
	<a href={"/mail/?view=all&fbid=".$revision->getFBID()}
	>MetaMTA Transcripts</a>,
	);


	$list = <ul class="differential-actions" />;
	foreach ($links as $link) {
	list($class, $tag) = $link;
	$list->appendChild(<li class={$class}>{$tag}</li>);
	}

	return $list;
	}

	protected function getDetailFields(
	DifferentialRevision $revision,
	Diff $diff,
	array $handles) {

	$fields = array();
	$fields['Revision Status'] = $this->getRevisionStatusDisplay($revision);

	$author = $revision->getOwnerID();
	$fields['Author'] = <tools:handle handle={$handles[$author]}
	link={true} />;

	$sandcastle = $this->getSandcastleURI($diff);
	if ($sandcastle) {
	$fields['Sandcastle'] = <a href={$sandcastle}>{$sandcastle}</a>;
	}

	$path = $diff->getSourcePath();
	if ($path) {
	$host = $diff->getSourceMachine();
	$branch = $diff->getGitBranch() ? ' (' . $diff->getGitBranch() . ')' : '';

	if ($host) {
	$user = $handles[$this->getRequest()->getViewerContext()->getUserID()]
	->getName();
	$fields['Path'] =
	<x:frag>
	<a href={"ssh://{$user}@{$host}"}>{$host}</a>:{$path}{$branch}
	</x:frag>;
	} else {
	$fields['Path'] = $path;
	}
	}

	$reviewer_links = array();
	foreach ($revision->getReviewers() as $reviewer) {
	$reviewer_links[] = <tools:handle handle={$handles[$reviewer]}
	link={true} />;
	}
	if ($reviewer_links) {
	$fields['Reviewers'] = array_implode(', ', $reviewer_links);
	} else {
	$fields['Reviewers'] = <em>None</em>;
	}

	$ccs = $revision->getCCFBIDs();
	if ($ccs) {
	$links = array();
	foreach ($ccs as $cc) {
	$links[] = <tools:handle handle={$handles[$cc]}
	link={true} />;
	}
	$fields['CCs'] = array_implode(', ', $links);
	}

	$blame_rev = $revision->getSvnBlameRevision();
	if ($blame_rev) {
	if ($revision->getRepositoryRef() && is_numeric($blame_rev)) {
	$ref = new RevisionRef($revision->getRepositoryRef(), $blame_rev);
	$fields['Blame Revision'] =
	<a href={URI($ref->getDetailURL())}>
	{$ref->getName()}
	</a>;
	} else {
	$fields['Blame Revision'] = $blame_rev;
	}
	}

	$tasks = $revision->getTaskHandles();

	if ($tasks) {
	$links = array();
	foreach ($tasks as $task) {
	$links[] = <tools:handle handle={$task} link={true} />;
	}
	$fields['Tasks'] = array_implode(<br />, $links);
	}

	$bugzilla_id = $revision->getBugzillaID();
	if ($bugzilla_id) {
	$href = 'http://bugs.developers.facebook.com/show_bug.cgi?id='.
	$bugzilla_id;
	$fields['Bugzilla'] = <a href={$href}>{'#'.$bugzilla_id}</a>;
	}

	$fields['Apply Patch'] = <tt>arc patch --revision {$revision->getID()}</tt>;

	if ($diff->getParentRevisionID()) {
	$parent = id(new DifferentialRevision())->load(
	$diff->getParentRevisionID());
	if ($parent) {
	$fields['Depends On'] =
	<a href={$parent->getURI()}>
	D{$parent->getID()}: {$parent->getName()}
	</a>;
	}
	}

	$star = <span class="star">{"\xE2\x98\x85"}</span>;

	Javelin::initBehavior('differential-star-more');

	switch ($diff->getLinted()) {
	case Diff::LINT_FAIL:
	$more = $this->renderDiffPropertyMoreLink($diff, 'lint');
	$fields['Lint'] =
	<x:frag>
	<span class="star-warn">{$star} Lint Failures</span>
	{$more}
	</x:frag>;
	break;
	case Diff::LINT_WARNINGS:
	$more = $this->renderDiffPropertyMoreLink($diff, 'lint');
	$fields['Lint'] =
	<x:frag>
	<span class="star-warn">{$star} Lint Warnings</span>
	{$more}
	</x:frag>;
	break;
	case Diff::LINT_OKAY:
	$fields['Lint'] =
	<span class="star-okay">{$star} Lint Free</span>;
	break;
	default:
	case Diff::LINT_NO:
	$fields['Lint'] =
	<span class="star-none">{$star} Not Linted</span>;
	break;
	}

	$unit_details = false;
	switch ($diff->getUnitTested()) {
	case Diff::UNIT_FAIL:
	$fields['Unit Tests'] =
	<span class="star-warn">{$star} Unit Test Failures</span>;
	$unit_details = true;
	break;
	case Diff::UNIT_WARN:
	$fields['Unit Tests'] =
	<span class="star-warn">{$star} Unit Test Warnings</span>;
	$unit_details = true;
	break;
	case Diff::UNIT_OKAY:
	$fields['Unit Tests'] =
	<span class="star-okay">{$star} Unit Tests Passed</span>;
	$unit_details = true;
	break;
	case Diff::UNIT_NO_TESTS:
	$fields['Unit Tests'] =
	<span class="star-none">{$star} No Test Coverage</span>;
	break;
	case Diff::UNIT_NO:
	default:
	$fields['Unit Tests'] =
	<span class="star-none">{$star} Not Unit Tested</span>;
	break;
	}

	if ($unit_details) {
	$fields['Unit Tests'] =
	<x:frag>
	{$fields['Unit Tests']}
	{$this->renderDiffPropertyMoreLink($diff, 'unit')}
	</x:frag>;
	}

	$platform_impact = $revision->getPlatformImpact();
	if ($platform_impact) {
	$fields['Platform Impact'] =
	<text linebreaks="true">{$platform_impact}</text>;
	}

	return $fields;
	}

	protected function renderDiffPropertyMoreLink(Diff $diff, $name) {
	$target = <div class="star-more"
	style="display: none;">
	<div class="star-loading">Loading...</div>
	</div>;
	$meta = array(
	'target' => $target->requireUniqueID(),
	'uri' => '/differential/diffprop/'.$diff->getID().'/'.$name.'/',
	);
	$more =
	<span sigil="star-link-container">
	·
	<a mustcapture="true"
	sigil="star-more"
	href="#"
	meta={$meta}>Show Details</a>
	</span>;
	return <x:frag>{$more}{$target}</x:frag>;
	}



	protected function loadInlineComments(array $feedback, array &$changesets) {

	$inline_comments = array();
	$feedback_ids = array_filter(array_pull($feedback, 'getID'));
	if (!$feedback_ids) {
	return $inline_comments;
	}

	$inline_comments = id(new DifferentialInlineComment())
	->loadAllWhere('feedbackID in (%Ld)', $feedback_ids);

	$load_changesets = array();
	$load_hunks = array();
	foreach ($inline_comments as $inline) {
	$changeset_id = $inline->getChangesetID();
	if (isset($changesets[$changeset_id])) {
	continue;
	}
	$load_changesets[$changeset_id] = true;
	}

	$more_changesets = array();
	if ($load_changesets) {
	$changeset_ids = array_keys($load_changesets);
	$more_changesets += id(new DifferentialChangeset())
	->loadAllWithIDs($changeset_ids);
	}

	if ($more_changesets) {
	$changesets += $more_changesets;
	$changesets = array_psort($changesets, 'getSortKey');
	}

	return $inline_comments;
	}



	protected function getRevisionStatusDisplay(DifferentialRevision $revision) {
	$viewer_id = $this->getRequest()->getViewerContext()->getUserID();
	$viewer_is_owner = ($viewer_id == $revision->getOwnerID());
	$status = $revision->getStatus();

	$more = null;
	switch ($status) {
	case DifferentialConstants::NEEDS_REVIEW:
	$message = 'Pending Review';
	break;
	case DifferentialConstants::NEEDS_REVISION:
	$message = 'Awaiting Revision';
	if ($viewer_is_owner) {
	$more = 'Make the requested changes and update the revision.';
	}
	break;
	case DifferentialConstants::ACCEPTED:
	$message = 'Ready for Commit';
	if ($viewer_is_owner) {
	$more =
	<x:frag>
	Run <tt>arc commit</tt> (svn) or <tt>arc amend</tt> (git) to
	proceed.
	</x:frag>;
	}
	break;
	case DifferentialConstants::COMMITTED:
	$message = 'Committed';
	$ref = $revision->getRevisionRef();
	$more = $ref
	? (<a href={URI($ref->getDetailURL())}>
	{$ref->getName()}
	</a>)
	: null;

	$engineering_repository_id = RepositoryRef::getByCallsign('E')->getID();
	if ($revision->getSVNRevision() &&
	$revision->getRepositoryID() == $engineering_repository_id) {
	Javelin::initBehavior(
	'differential-revtracker-status',
	array(
	'uri' => '/differential/revtracker/'.$revision->getID().'/',
	'statusId' => 'revtracker_status',
	'mergeLinkId' => 'ask_for_merge_link',
	));
	}
	break;
	case DifferentialConstants::ABANDONED:
	$message = 'Abandoned';
	break;
	default:
	throw new Exception("Unknown revision status.");
	}

	if ($more) {
	$message =
	<x:frag>
	<strong id="revtracker_status">{$message}</strong>
	· {$more}
	</x:frag>;
	} else {
	$message = <strong id="revtracker_status">{$message}</strong>;
	}

	return $message;
	}

	protected function renderFeedbackList(array $xhp, array $obj, $viewer_id) {

	// Use magical heuristics to try to hide older comments.

	$obj = array_reverse($obj);
	$obj = array_values($obj);
	$xhp = array_reverse($xhp);
	$xhp = array_values($xhp);

	$last_comment = null;
	foreach ($obj as $position => $feedback) {
	if ($feedback->getUserID() == $viewer_id) {
	if ($last_comment === null) {
	$last_comment = $position;
	} else if ($last_comment == $position - 1) {
	// If you made consecuitive comments, show them all. This is a spaz
	// rule for epriestley comments.
	$last_comment = $position;
	}
	}
	}

	$header = array();

	$hide = array();
	if ($last_comment !== null) {
	foreach ($obj as $position => $feedback) {
	$action = $feedback->getAction();
	if ($action == 'testplan' \|\| $action == 'summarize') {
	// Always show summary and test plan.
	$header[] = $xhp[$position];
	unset($xhp[$position]);
	continue;
	}

	if ($position <= $last_comment) {
	// Always show comments after your last comment.
	continue;
	}

	if ($position < 3) {
	// Always show the most recent 3 comments.
	continue;
	}

	// Hide everything else.
	$hide[] = $position;
	}
	}

	if (count($hide) <= 3) {
	// Don't hide if there's not much to hide.
	$hide = array();
	}

	$header = array_reverse($header);

	$hidden = array_select_keys($xhp, $hide);
	$visible = array_diff_key($xhp, $hidden);

	$visible = array_reverse($visible);
	$hidden = array_reverse($hidden);

	if ($hidden) {
	Javelin::initBehavior(
	'differential-show-all-feedback',
	array(
	'markup' => id(<x:frag>{$hidden}</x:frag>)->toString(),
	));
	$hidden =
	<div sigil="all-feedback-container">
	<div class="older-replies-are-hidden">
	{number_format(count($hidden))} older replies are hidden.
	<a href="#" sigil="show-all-feedback"
	mustcapture="true">Show all feedback.</a>
	</div>
	</div>;
	} else {
	$hidden = null;
	}

	return
	<x:frag>
	{$header}
	{$hidden}
	{$visible}
	</x:frag>;
	}

	}
	protected function getDetailFields(
	DifferentialRevision $revision,
	Diff $diff,
	array $handles) {

	$fields = array();
	$fields['Revision Status'] = $this->getRevisionStatusDisplay($revision);

	$author = $revision->getOwnerID();
	$fields['Author'] = <tools:handle handle={$handles[$author]}
	link={true} />;

	$sandcastle = $this->getSandcastleURI($diff);
	if ($sandcastle) {
	$fields['Sandcastle'] = <a href={$sandcastle}>{$sandcastle}</a>;
	}

	$path = $diff->getSourcePath();
	if ($path) {
	$host = $diff->getSourceMachine();
	$branch = $diff->getGitBranch() ? ' (' . $diff->getGitBranch() . ')' : '';

	if ($host) {
	$user = $handles[$this->getRequest()->getViewerContext()->getUserID()]
	->getName();
	$fields['Path'] =
	<x:frag>
	<a href={"ssh://{$user}@{$host}"}>{$host}</a>:{$path}{$branch}
	</x:frag>;
	} else {
	$fields['Path'] = $path;
	}
	}

	$reviewer_links = array();
	foreach ($revision->getReviewers() as $reviewer) {
	$reviewer_links[] = <tools:handle handle={$handles[$reviewer]}
	link={true} />;
	}
	if ($reviewer_links) {
	$fields['Reviewers'] = array_implode(', ', $reviewer_links);
	} else {
	$fields['Reviewers'] = <em>None</em>;
	}

	$ccs = $revision->getCCFBIDs();
	if ($ccs) {
	$links = array();
	foreach ($ccs as $cc) {
	$links[] = <tools:handle handle={$handles[$cc]}
	link={true} />;
	}
	$fields['CCs'] = array_implode(', ', $links);
	}

	$blame_rev = $revision->getSvnBlameRevision();
	if ($blame_rev) {
	if ($revision->getRepositoryRef() && is_numeric($blame_rev)) {
	$ref = new RevisionRef($revision->getRepositoryRef(), $blame_rev);
	$fields['Blame Revision'] =
	<a href={URI($ref->getDetailURL())}>
	{$ref->getName()}
	</a>;
	} else {
	$fields['Blame Revision'] = $blame_rev;
	}
	}

	$tasks = $revision->getTaskHandles();

	if ($tasks) {
	$links = array();
	foreach ($tasks as $task) {
	$links[] = <tools:handle handle={$task} link={true} />;
	}
	$fields['Tasks'] = array_implode(<br />, $links);
	}

	$bugzilla_id = $revision->getBugzillaID();
	if ($bugzilla_id) {
	$href = 'http://bugs.developers.facebook.com/show_bug.cgi?id='.
	$bugzilla_id;
	$fields['Bugzilla'] = <a href={$href}>{'#'.$bugzilla_id}</a>;
	}

	$fields['Apply Patch'] = <tt>arc patch --revision {$revision->getID()}</tt>;

	if ($diff->getParentRevisionID()) {
	$parent = id(new DifferentialRevision())->load(
	$diff->getParentRevisionID());
	if ($parent) {
	$fields['Depends On'] =
	<a href={$parent->getURI()}>
	D{$parent->getID()}: {$parent->getName()}
	</a>;
	}
	}

	$star = <span class="star">{"\xE2\x98\x85"}</span>;

	Javelin::initBehavior('differential-star-more');

	switch ($diff->getLinted()) {
	case Diff::LINT_FAIL:
	$more = $this->renderDiffPropertyMoreLink($diff, 'lint');
	$fields['Lint'] =
	<x:frag>
	<span class="star-warn">{$star} Lint Failures</span>
	{$more}
	</x:frag>;
	break;
	case Diff::LINT_WARNINGS:
	$more = $this->renderDiffPropertyMoreLink($diff, 'lint');
	$fields['Lint'] =
	<x:frag>
	<span class="star-warn">{$star} Lint Warnings</span>
	{$more}
	</x:frag>;
	break;
	case Diff::LINT_OKAY:
	$fields['Lint'] =
	<span class="star-okay">{$star} Lint Free</span>;
	break;
	default:
	case Diff::LINT_NO:
	$fields['Lint'] =
	<span class="star-none">{$star} Not Linted</span>;
	break;
	}

	$unit_details = false;
	switch ($diff->getUnitTested()) {
	case Diff::UNIT_FAIL:
	$fields['Unit Tests'] =
	<span class="star-warn">{$star} Unit Test Failures</span>;
	$unit_details = true;
	break;
	case Diff::UNIT_WARN:
	$fields['Unit Tests'] =
	<span class="star-warn">{$star} Unit Test Warnings</span>;
	$unit_details = true;
	break;
	case Diff::UNIT_OKAY:
	$fields['Unit Tests'] =
	<span class="star-okay">{$star} Unit Tests Passed</span>;
	$unit_details = true;
	break;
	case Diff::UNIT_NO_TESTS:
	$fields['Unit Tests'] =
	<span class="star-none">{$star} No Test Coverage</span>;
	break;
	case Diff::UNIT_NO:
	default:
	$fields['Unit Tests'] =
	<span class="star-none">{$star} Not Unit Tested</span>;
	break;
	}

	if ($unit_details) {
	$fields['Unit Tests'] =
	<x:frag>
	{$fields['Unit Tests']}
	{$this->renderDiffPropertyMoreLink($diff, 'unit')}
	</x:frag>;
	}

	$platform_impact = $revision->getPlatformImpact();
	if ($platform_impact) {
	$fields['Platform Impact'] =
	<text linebreaks="true">{$platform_impact}</text>;
	}

	return $fields;
	}


	*/

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