PhragmentRevertController.php
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PhragmentRevertController.php
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	<?php

	final class PhragmentRevertController extends PhragmentController {

	private $dblob;
	private $id;

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

	public function processRequest() {
	$request = $this->getRequest();
	$viewer = $request->getUser();

	$fragment = id(new PhragmentFragmentQuery())
	->setViewer($viewer)
	->withPaths(array($this->dblob))
	->requireCapabilities(
	array(
	PhabricatorPolicyCapability::CAN_VIEW,
	PhabricatorPolicyCapability::CAN_EDIT,
	))
	->executeOne();
	if ($fragment === null) {
	return new Aphront404Response();
	}

	$version = id(new PhragmentFragmentVersionQuery())
	->setViewer($viewer)
	->withFragmentPHIDs(array($fragment->getPHID()))
	->withIDs(array($this->id))
	->executeOne();
	if ($version === null) {
	return new Aphront404Response();
	}

	if ($request->isDialogFormPost()) {
	$file_phid = $version->getFilePHID();

	$file = null;
	if ($file_phid !== null) {
	$file = id(new PhabricatorFileQuery())
	->setViewer($viewer)
	->withPHIDs(array($file_phid))
	->executeOne();
	if ($file === null) {
	throw new Exception(
	'The file associated with this version was not found.');
	}
	}

	if ($file === null) {
	$fragment->deleteFile($viewer);
	} else {
	$fragment->updateFromFile($viewer, $file);
	}

	return id(new AphrontRedirectResponse())
	->setURI($this->getApplicationURI('/history/'.$this->dblob));
	}

	return $this->createDialog($fragment, $version);
	}

	function createDialog(
	PhragmentFragment $fragment,
	PhragmentFragmentVersion $version) {

	$request = $this->getRequest();
	$viewer = $request->getUser();

	$dialog = id(new AphrontDialogView())
	->setTitle(pht('Really revert this fragment?'))
	->setUser($request->getUser())
	->addSubmitButton(pht('Revert'))
	->addCancelButton(pht('Cancel'))
	->appendParagraph(pht(
	'Reverting this fragment to version %d will create a new version of '.
	'the fragment. It will not delete any version history.',
	$version->getSequence(),
	$version->getSequence()));
	return id(new AphrontDialogResponse())->setDialog($dialog);
	}

	}

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