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phorge/src/applications/calendar/xaction/PhabricatorCalendarEventDateTransaction.php
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PhabricatorCalendarEventDateTransaction.php
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<?php
abstract class PhabricatorCalendarEventDateTransaction
extends PhabricatorCalendarEventTransactionType {
abstract protected function getInvalidDateMessage();
public function isInheritedEdit() {
return false;
}
public function generateNewValue($object, $value) {
$editor = $this->getEditor();
if ($value->isDisabled()) {
return null;
}
return $value->newPhutilDateTime()
->setIsAllDay($editor->getNewIsAllDay())
->newAbsoluteDateTime()
->toDictionary();
}
public function getTransactionHasEffect($object, $old, $new) {
// If either value is `null` (for example, when setting a recurring event
// end date for the first time) and the other value is not `null`, this
// transaction has an effect.
$has_null = (($old === null) || ($new === null));
if ($has_null) {
return ($old !== $new);
}
$editor = $this->getEditor();
$actor = $this->getActor();
$actor_timezone = $actor->getTimezoneIdentifier();
// When an edit only changes the timezone of an event without materially
// changing the absolute time, discard it. This can happen if two users in
// different timezones edit an event without rescheduling it.
// Eventually, after T11073, there may be a UI control to adjust timezones.
// If a user explicitly changed the timezone, we should respect that.
// However, there is no way for users to intentionally apply this kind of
// edit today.
$old_datetime = PhutilCalendarAbsoluteDateTime::newFromDictionary($old)
->setIsAllDay($editor->getNewIsAllDay())
->setViewerTimezone($actor_timezone);
$new_datetime = PhutilCalendarAbsoluteDateTime::newFromDictionary($new)
->setIsAllDay($editor->getNewIsAllDay())
->setViewerTimezone($actor_timezone);
$old_epoch = $old_datetime->getEpoch();
$new_epoch = $new_datetime->getEpoch();
return ($old_epoch !== $new_epoch);
}
public function validateTransactions($object, array $xactions) {
$errors = array();
foreach ($xactions as $xaction) {
if ($xaction->getNewValue()->isValid()) {
continue;
}
$message = $this->getInvalidDateMessage();
$errors[] = $this->newInvalidError($message, $xaction);
}
return $errors;
}
}

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