class.ilCounterDetector.php

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<?php
/* Copyright (c) 1998-2016 ILIAS open source, Extended GPL, see docs/LICENSE */

require_once './Services/WorkflowEngine/classes/detectors/class.ilSimpleDetector.php';

class ilCounterDetector extends ilSimpleDetector
{
        private $expected_trigger_events = 1;

        private $actual_trigger_events = 0;

        public function __construct(ilNode $context)
        {
                parent::__construct($context);
        }

        public function setExpectedTriggerEvents($count)
        {
                $this->expected_trigger_events = (int) $count;
        }

        public function getExpectedTriggerEvents()
        {
                return $this->expected_trigger_events;
        }

        public function getActualTriggerEvents()
        {
                return $this->actual_trigger_events;
        }

        public function setActualTriggerEvents($count)
        {
                if ($this->expected_trigger_events < (int) $count)
                {
                        $this->actual_trigger_events = $count;
                } 
                else 
                {
                        // TODO: throw actual must be smaller than expected.
                }
        }

        public function trigger($params)
        {
                if ($this->actual_trigger_events < $this->expected_trigger_events)
                {
                        $this->actual_trigger_events++;
                        if ($this->actual_trigger_events == $this->expected_trigger_events)
                        {
                                $this->setDetectorState(true);
                        }
                        return true;
                }
                return false;
        }
}