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;
    }
}