Prado\Web\UI\WebControls\TImageMap::raisePostBackEvent PHP Method

    public function raisePostBackEvent($param)
    {
        $postBackValue = null;
        if ($param !== '') {
            $index = TPropertyValue::ensureInteger($param);
            $hotspots = $this->getHotSpots();
            if ($index >= 0 && $index < $hotspots->getCount()) {
                $hotspot = $hotspots->itemAt($index);
                if (($mode = $hotspot->getHotSpotMode()) === THotSpotMode::NotSet) {
                    $mode = $this->getHotSpotMode();
                }
                if ($mode === THotSpotMode::PostBack) {
                    $postBackValue = $hotspot->getPostBackValue();
                    if ($hotspot->getCausesValidation()) {
                        $this->getPage()->validate($hotspot->getValidationGroup());
                    }
                }
            }
        }
        if ($postBackValue !== null) {
            $this->onClick(new TImageMapEventParameter($postBackValue));
        }
    }