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sources/3rdparty/Sabre/VObject/Component/VAlarm.php 3.79 KB
03e52840d   Kload   Init
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  <?php
  
  namespace Sabre\VObject\Component;
  use Sabre\VObject;
  
  /**
   * VAlarm component
   *
   * This component contains some additional functionality specific for VALARMs.
   *
   * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
   * @author Evert Pot (http://www.rooftopsolutions.nl/)
   * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
   */
  class VAlarm extends VObject\Component {
  
      /**
       * Returns a DateTime object when this alarm is going to trigger.
       *
       * This ignores repeated alarm, only the first trigger is returned.
       *
       * @return DateTime
       */
      public function getEffectiveTriggerTime() {
  
          $trigger = $this->TRIGGER;
          if(!isset($trigger['VALUE']) || strtoupper($trigger['VALUE']) === 'DURATION') {
              $triggerDuration = VObject\DateTimeParser::parseDuration($this->TRIGGER);
              $related = (isset($trigger['RELATED']) && strtoupper($trigger['RELATED']) == 'END') ? 'END' : 'START';
  
              $parentComponent = $this->parent;
              if ($related === 'START') {
  
                  if ($parentComponent->name === 'VTODO') {
                      $propName = 'DUE';
                  } else {
                      $propName = 'DTSTART';
                  }
  
                  $effectiveTrigger = clone $parentComponent->$propName->getDateTime();
                  $effectiveTrigger->add($triggerDuration);
              } else {
                  if ($parentComponent->name === 'VTODO') {
                      $endProp = 'DUE';
                  } elseif ($parentComponent->name === 'VEVENT') {
                      $endProp = 'DTEND';
                  } else {
                      throw new \LogicException('time-range filters on VALARM components are only supported when they are a child of VTODO or VEVENT');
                  }
  
                  if (isset($parentComponent->$endProp)) {
                      $effectiveTrigger = clone $parentComponent->$endProp->getDateTime();
                      $effectiveTrigger->add($triggerDuration);
                  } elseif (isset($parentComponent->DURATION)) {
                      $effectiveTrigger = clone $parentComponent->DTSTART->getDateTime();
                      $duration = VObject\DateTimeParser::parseDuration($parentComponent->DURATION);
                      $effectiveTrigger->add($duration);
                      $effectiveTrigger->add($triggerDuration);
                  } else {
                      $effectiveTrigger = clone $parentComponent->DTSTART->getDateTime();
                      $effectiveTrigger->add($triggerDuration);
                  }
              }
          } else {
              $effectiveTrigger = $trigger->getDateTime();
          }
          return $effectiveTrigger;
  
      }
  
      /**
       * Returns true or false depending on if the event falls in the specified
       * time-range. This is used for filtering purposes.
       *
       * The rules used to determine if an event falls within the specified
       * time-range is based on the CalDAV specification.
       *
       * @param \DateTime $start
       * @param \DateTime $end
       * @return bool
       */
      public function isInTimeRange(\DateTime $start, \DateTime $end) {
  
          $effectiveTrigger = $this->getEffectiveTriggerTime();
  
          if (isset($this->DURATION)) {
              $duration = VObject\DateTimeParser::parseDuration($this->DURATION);
              $repeat = (string)$this->repeat;
              if (!$repeat) {
                  $repeat = 1;
              }
  
              $period = new \DatePeriod($effectiveTrigger, $duration, (int)$repeat);
  
              foreach($period as $occurrence) {
  
                  if ($start <= $occurrence && $end > $occurrence) {
                      return true;
                  }
              }
              return false;
          } else {
              return ($start <= $effectiveTrigger && $end > $effectiveTrigger);
          }
  
      }
  
  }