function __toString()
 {
     $minutes = array();
     $minute = 0;
     while ($minute < 60) {
         $minutes[] = $minute;
         $minute += $this->minute_interval;
     }
     $hours = array();
     foreach (range(0, 23) as $hour) {
         foreach ($minutes as $minute) {
             $hours[str_pad($hour, 2, '0', STR_PAD_LEFT) . ':' . str_pad($minute, 2, '0', STR_PAD_LEFT)] = $hour . ':' . str_pad($minute, 2, '0', STR_PAD_LEFT);
         }
     }
     $this->dropdown->setDataSource($hours);
     $value = $this->dropdown->getValue();
     if ($value) {
         $parts = explode(':', $value);
         $min_distance = 60;
         $approx_min = 0;
         foreach ($minutes as $minute) {
             if ($min_distance > abs($parts[1] - $minute)) {
                 $min_distance = abs($parts[1] - $minute);
                 $approx_min = $minute;
             }
         }
         if ($min_distance > 60 - $parts[1]) {
             $approx_min = 0;
             $parts[0] = str_pad(($parts[0] + 1) % 24, 2, '0', STR_PAD_LEFT);
         }
         $this->dropdown->setValue($parts[0] . ':' . str_pad($approx_min, 2, '0', STR_PAD_LEFT));
     }
     return '<div class="form_input_datetime">' . $this->date_picker->__toString() . $this->dropdown->__toString() . '</div>';
 }
 function __toString()
 {
     $load = new Loader();
     $html = $load->helper('html');
     $this->beforeHTML = $html->javascript('/widgets/custom/coupleddropdown.js');
     $this->beforeHTML .= $html->inlineJavascript('var coupled_empty_' . $this->getId() . ' = "' . $this->empty_value . '";');
     $this->afterHTML = $html->img('/widgets/custom/ajax-loader.gif', 'Loading...', array('style' => 'display:none'));
     $this->setClass('coupleddropdown');
     if ($this->filter_column && $this->_data_source instanceof TableReader) {
         $this->_data_source->where($this->filter_column, $this->related->getValue());
     }
     if ($this->empty_value) {
         $this->add('0', $this->empty_value);
     }
     return parent::__toString();
 }
 function __toString()
 {
     $this->setName($this->getName(), $this->getName() . '[]');
     return parent::__toString();
 }