testing

PhragmentSnapshotDeleteController.php
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			<?php

			final class PhragmentSnapshotDeleteController extends PhragmentController {

			private $id;

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

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

			$snapshot = id(new PhragmentSnapshotQuery())
			->setViewer($viewer)
			->requireCapabilities(array(
			PhabricatorPolicyCapability::CAN_VIEW,
			PhabricatorPolicyCapability::CAN_EDIT))
			->withIDs(array($this->id))
			->executeOne();
			if ($snapshot === null) {
			return new Aphront404Response();
			}

			if ($request->isDialogFormPost()) {
			$fragment_uri = $snapshot->getPrimaryFragment()->getURI();

			$snapshot->delete();

			return id(new AphrontRedirectResponse())
			->setURI($fragment_uri);
			}

			return $this->createDialog();
			}

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

			$dialog = id(new AphrontDialogView())
			->setTitle(pht('Really delete this snapshot?'))
			->setUser($request->getUser())
			->addSubmitButton(pht('Delete'))
			->addCancelButton(pht('Cancel'))
			->appendParagraph(pht(
			'Deleting this snapshot is a permanent operation. You can not '.
			'recover the state of the snapshot.'));
			return id(new AphrontDialogResponse())->setDialog($dialog);
			}

			}