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PhrictionDiffController.php
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Sun, Apr 13, 00:20

PhrictionDiffController.php
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<?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.
*/
/**
* @group phriction
*/
final class PhrictionDiffController
extends PhrictionController {
private $id;
public function willProcessRequest(array $data) {
$this->id = $data['id'];
}
public function processRequest() {
$request = $this->getRequest();
$user = $request->getUser();
$document = id(new PhrictionDocument())->load($this->id);
if (!$document) {
return new Aphront404Response();
}
$current = id(new PhrictionContent())->load($document->getContentID());
$l = $request->getInt('l');
$r = $request->getInt('r');
$ref = $request->getStr('ref');
if ($ref) {
list($l, $r) = explode(',', $ref);
}
$content = id(new PhrictionContent())->loadAllWhere(
'documentID = %d AND version IN (%Ld)',
$document->getID(),
array($l, $r));
$content = mpull($content, null, 'getVersion');
$content_l = idx($content, $l, null);
$content_r = idx($content, $r, null);
if (!$content_l || !$content_r) {
return new Aphront404Response();
}
$text_l = $content_l->getContent();
$text_r = $content_r->getContent();
$text_l = wordwrap($text_l, 80);
$text_r = wordwrap($text_r, 80);
$engine = new PhabricatorDifferenceEngine();
$changeset = $engine->generateChangesetFromFileContent($text_l, $text_r);
$changeset->setOldProperties(
array(
'Title' => $content_l->getTitle(),
));
$changeset->setNewProperties(
array(
'Title' => $content_r->getTitle(),
));
$whitespace_mode = DifferentialChangesetParser::WHITESPACE_SHOW_ALL;
$parser = new DifferentialChangesetParser();
$parser->setChangeset($changeset);
$parser->setRenderingReference("{$l},{$r}");
$parser->setWhitespaceMode($whitespace_mode);
$spec = $request->getStr('range');
list($range_s, $range_e, $mask) =
DifferentialChangesetParser::parseRangeSpecification($spec);
$output = $parser->render($range_s, $range_e, $mask);
if ($request->isAjax()) {
return id(new AphrontAjaxResponse())->setContent($output);
}
require_celerity_resource('differential-changeset-view-css');
require_celerity_resource('syntax-highlighting-css');
require_celerity_resource('phriction-document-css');
Javelin::initBehavior('differential-show-more', array(
'uri' => '/phriction/diff/'.$document->getID().'/',
'whitespace' => $whitespace_mode,
));
$slug = $document->getSlug();
$revert_l = $this->renderRevertButton($content_l, $current);
$revert_r = $this->renderRevertButton($content_r, $current);
$crumbs = new AphrontCrumbsView();
$crumbs->setCrumbs(
array(
'Phriction',
phutil_render_tag(
'a',
array(
'href' => PhrictionDocument::getSlugURI($slug),
),
phutil_escape_html($current->getTitle())),
phutil_render_tag(
'a',
array(
'href' => '/phriction/history/'.$document->getSlug().'/',
),
'History'),
phutil_escape_html("Changes Between Version {$l} and Version {$r}"),
));
$comparison_table = $this->renderComparisonTable(
array(
$content_r,
$content_l,
));
$navigation_table = null;
if ($l + 1 == $r) {
$nav_l = ($l > 1);
$nav_r = ($r != $current->getVersion());
$uri = $request->getRequestURI();
if ($nav_l) {
$link_l = phutil_render_tag(
'a',
array(
'href' => $uri->alter('l', $l - 1)->alter('r', $r - 1),
),
"\xC2\xAB Previous Change");
} else {
$link_l = 'Original Change';
}
$link_r = null;
if ($nav_r) {
$link_r = phutil_render_tag(
'a',
array(
'href' => $uri->alter('l', $l + 1)->alter('r', $r + 1),
),
"Next Change \xC2\xBB");
} else {
$link_r = 'Most Recent Change';
}
$navigation_table =
'<table class="phriction-history-nav-table">
<tr>
<td class="nav-prev">'.$link_l.'</td>
<td class="nav-next">'.$link_r.'</td>
</tr>
</table>';
}
$output =
'<div class="phriction-document-history-diff">'.
$comparison_table->render().
'<br />'.
'<br />'.
$navigation_table.
'<table class="phriction-revert-table">'.
'<tr><td>'.$revert_l.'</td><td>'.$revert_r.'</td>'.
'</table>'.
$output.
'</div>';
return $this->buildStandardPageResponse(
array(
$crumbs,
$output,
),
array(
'title' => 'Document History',
));
}
private function renderRevertButton(
PhrictionContent $content,
PhrictionContent $current) {
$document_id = $content->getDocumentID();
$version = $content->getVersion();
if ($content->getChangeType() == PhrictionChangeType::CHANGE_DELETE) {
// Don't show an edit/revert button for changes which deleted the content
// since it's silly.
return null;
}
if ($content->getID() == $current->getID()) {
return phutil_render_tag(
'a',
array(
'href' => '/phriction/edit/'.$document_id.'/',
'class' => 'button',
),
'Edit Current Version');
}
return phutil_render_tag(
'a',
array(
'href' => '/phriction/edit/'.$document_id.'/?revert='.$version,
'class' => 'button',
),
'Revert to Version '.phutil_escape_html($version).'...');
}
private function renderComparisonTable(array $content) {
$user = $this->getRequest()->getUser();
$phids = mpull($content, 'getAuthorPHID');
$handles = id(new PhabricatorObjectHandleData($phids))->loadHandles();
$rows = array();
foreach ($content as $c) {
$rows[] = array(
phabricator_date($c->getDateCreated(), $user),
phabricator_time($c->getDateCreated(), $user),
phutil_escape_html('Version '.$c->getVersion()),
$handles[$c->getAuthorPHID()]->renderLink(),
phutil_escape_html($c->getDescription()),
);
}
$table = new AphrontTableView($rows);
$table->setHeaders(
array(
'Date',
'Time',
'Version',
'Author',
'Description',
));
$table->setColumnClasses(
array(
'',
'right',
'pri',
'',
'wide',
));
return $table;
}
}

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