function populate()
{
$orders = new CustomerServiceCollection(new SInvoiceLine());
$customersales = $orders->getServiceHistory();
$db =& DB::Instance();
$types = array('ontime' => 'On Time', 'infull' => 'In Full', 'ontime_infull' => 'On Time / In Full');
$label = array();
$type_counter = 0;
$sales_counter = 0;
foreach ($types as $key => $title) {
$data = array();
$sales_counter = 0;
foreach ($customersales['previous'] as $period => $value) {
$data['x'][] = $period;
$data['y'][] = (double) number_format($value[$key . '%'], 2);
$label[$type_counter][$sales_counter] = $title . ': ' . number_format($value[$key . '%'], 2);
$sales_counter++;
}
$options['seriesList'][] = array('label' => $title, 'legendEntry' => TRUE, 'data' => $data, 'markers' => array('visible' => TRUE, 'type' => 'circle'));
$type_counter++;
}
$options['type'] = 'line';
$options['identifier'] = __CLASS__;
$options['labels'] = $label;
$this->contents = json_encode($options);
}