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PhabricatorApplicationTransactionShowOlderController.php
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			<?php

			final class PhabricatorApplicationTransactionShowOlderController
			extends PhabricatorApplicationTransactionController {

			public function shouldAllowPublic() {
			return true;
			}

			public function handleRequest(AphrontRequest $request) {
			$viewer = $this->getViewer();

			$object = id(new PhabricatorObjectQuery())
			->withPHIDs(array($request->getURIData('phid')))
			->setViewer($viewer)
			->executeOne();
			if (!$object) {
			return new Aphront404Response();
			}

			if (!$object instanceof PhabricatorApplicationTransactionInterface) {
			return new Aphront404Response();
			}

			$query = PhabricatorApplicationTransactionQuery::newQueryForObject($object);
			if (!$query) {
			return new Aphront404Response();
			}

			$raw_view_data = $request->getStr('viewData');
			try {
			$view_data = phutil_json_decode($raw_view_data);
			} catch (Exception $ex) {
			$view_data = array();
			}

			$timeline = $this->buildTransactionTimeline(
			$object,
			$query,
			null,
			$view_data);

			$phui_timeline = $timeline->buildPHUITimelineView($with_hiding = false);
			$phui_timeline->setShouldAddSpacers(false);
			$events = $phui_timeline->buildEvents();

			return id(new AphrontAjaxResponse())
			->setContent(array(
			'timeline' => hsprintf('%s', $events),
			));
			}

			}