/**
* @param FORM $form The form to which these commands belong.
* @param string $field_name The name of the field to select/de-select.
*/
public function __construct($form, $field_name)
{
$this->assert(isset($form), "[form] cannot be empty.", '__construct', 'SELECTION_COMMANDS');
parent::__construct($form->context);
$ctrl_name = $form->js_name($field_name);
$command = $this->app->make_command();
$command->id = 'select_all';
$command->caption = 'Select all';
$command->link = '#';
$command->executable = true;
$command->on_click = "select_all ({$ctrl_name})";
$this->append($command);
$command = $this->app->make_command();
$command->id = 'select_none';
$command->caption = 'Select none';
$command->link = '#';
$command->executable = true;
$command->on_click = "select_none ({$ctrl_name})";
$this->append($command);
}
