/**
* Initialised option nodes
* @method initOptions
* @param array $options Array of the form:
* ['value' => 'displayedValue', ...]
* @param string $defaultOption Key of default value in array $options.
* @return void
*/
private function initOptions(array $options, $defaultOption)
{
$optionNode = new HtmlLeaf(['kind' => 'option']);
foreach ($options as $value => $displayedValue) {
$this->appendChild(clone $optionNode)->setAttr(['value' => $value])->setCont("{$displayedValue}");
}
if (isset($options[$defaultOption])) {
$offset = ArrayUtils::key2offset($options, $defaultOption);
$this->childNodes[$offset]->attr['selected'] = 'selected';
$this->defaultOption = $this->childNodes[$offset];
}
}
/**
* Calculates $this->calib, the average time between immediate calls
* to tic() and toc().
* Initialises the standard deviation of $this->calib.
* @return void
*/
private function calibrate()
{
$imax = 20;
$this->tic();
$this->tac();
for ($i = 0; $i < $imax; $i++) {
$this->tic();
$this->tac(self::RESET_LAP);
$calib[] = $this->elapsed;
}
$this->calib = ArrayUtils::mean($calib);
$this->stDev = ArrayUtils::stDeviation($calib);
}
