/**
* Builds the javascript object of event callbacks.
*
* @access private
* @return string Javascript code block.
*/
private function buildEventCallbacks()
{
$output = '';
$events = $this->chart->getEvents();
foreach ($events as $event => $callback) {
$output .= sprintf('google.visualization.events.addListener($this.chart, "%1$s", function (event) {' . ' return lava.event(event, $this.chart, %2$s);' . '});', $event, $callback) . PHP_EOL . PHP_EOL;
}
return $output;
}
/**
* Builds the javascript object of event callbacks.
*
* @access private
*
* @return string Javascript code block.
*/
private function buildEventCallbacks()
{
$out = '';
foreach ($this->chart->getEvents() as $event) {
$callback = sprintf('function (event) {return lava.event(event, $this.chart, %s);}', $event->callback);
$out .= sprintf('google.visualization.events.addListener($this.chart, "%s", %s);', $event::TYPE, $callback) . PHP_EOL . PHP_EOL;
}
return $out;
}