Retrieves all filter information used by the default display.
Additional to the one provided by the plugin this method takes care about adding additional filters based on user input.
array $form: The full wizard form array.
array $form_state: The current state of the wizard form.
array An array of filter arrays keyed by ID. A sort array contains the options accepted by a filter handler.
protected function default_display_filters($form, $form_state) {
$filters = array();
// Add any filters provided by the plugin.
foreach ($this
->getFilters() as $name => $info) {
$filters[$name] = $info;
}
// Add any filters specified by the user when filling out the wizard.
$filters = array_merge($filters, $this
->default_display_filters_user($form, $form_state));
return $filters;
}