PhabricatorSearchUsersField.php
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	<?php

	final class PhabricatorSearchUsersField
	extends PhabricatorSearchTokenizerField {

	protected function getDefaultValue() {
	return array();
	}

	protected function newDatasource() {
	// TODO: Make this use PhabricatorPeopleUserFunctionDatasource once field
	// support is a little more powerful.
	return new PhabricatorPeopleDatasource();
	}

	protected function getValueFromRequest(AphrontRequest $request, $key) {
	$list = $this->getListFromRequest($request, $key);
	$allow_types = array();

	$phids = array();
	$names = array();
	$allow_types = array_fuse($allow_types);
	$user_type = PhabricatorPeopleUserPHIDType::TYPECONST;
	foreach ($list as $item) {
	$type = phid_get_type($item);
	if ($type == $user_type) {
	$phids[] = $item;
	} else if (isset($allow_types[$type])) {
	$phids[] = $item;
	} else {
	if (PhabricatorTypeaheadDatasource::isFunctionToken($item)) {
	// If this is a function, pass it through unchanged; we'll evaluate
	// it later.
	$phids[] = $item;
	} else {
	$names[] = $item;
	}
	}
	}

	if ($names) {
	$users = id(new PhabricatorPeopleQuery())
	->setViewer($this->getViewer())
	->withUsernames($names)
	->execute();
	foreach ($users as $user) {
	$phids[] = $user->getPHID();
	}
	$phids = array_unique($phids);
	}

	return $phids;
	}

	}