/**
* Get an instance of the page extension but don't initialize it.
*
* Useful for using some methods during AJAX call.
*
* @return WPCF_GUI_Term_Field_Editing
* @since 2.1
*/
public static function get_instance()
{
if (null == self::$instance) {
self::$instance = new self();
}
return self::$instance;
}
public static function initialize()
{
if (null == self::$instance) {
self::$instance = new self();
}
}
/**
* Initialize parts of GUI depending on current screen.
*
* @since 1.9
*/
function wpcf_initialize_admin_gui()
{
$screen = get_current_screen();
// Should be always true.
if ($screen instanceof WP_Screen) {
if (in_array($screen->base, array('edit-tags', 'term'))) {
WPCF_GUI_Term_Field_Editing::initialize();
}
}
}
/**
* When updating screen options with hidden listing columns, we may need to store additional data.
*
* See WPCF_GUI_Term_Field_Editing::maybe_disable_column_autohiding() for details.
*
* @param mixed $meta_id Ignored.
* @param mixed $object_id Ignored.
* @param string $meta_key Meta key.
* @param mixed $_meta_value Meta value. We expect it to be an array.
* @since 2.1
*/
public function capture_columnshidden_update($meta_id, $object_id, $meta_key, $_meta_value)
{
// We're looking for a meta_key that looks like "manage{$page_name}columnshidden".
$txt_columnshidden = 'columnshidden';
$is_columnshidden_option = 0 == strcmp($txt_columnshidden, substr($meta_key, strlen($txt_columnshidden) * -1));
if ($is_columnshidden_option) {
// Extract the page name from the meta_key
$strip_begin = strlen('manage');
$strip_end = strlen($txt_columnshidden);
$page_name = substr($meta_key, $strip_begin, strlen($meta_key) - ($strip_begin + $strip_end));
// Determine if we're editing a taxonomy
$txt_edit = 'edit-';
$txt_edit_len = strlen($txt_edit);
$is_tax_edit_page = 0 == strcmp($txt_edit, substr($page_name, 0, $txt_edit_len));
// This is not 100% certain but attempting to handle a taxonomy that doesn't exist does no harm.
if ($is_tax_edit_page) {
// Now we know that we need to perform the extra action.
$taxonomy_name = substr($page_name, $txt_edit_len);
$edit_term_page_extension = WPCF_GUI_Term_Field_Editing::get_instance();
$edit_term_page_extension->maybe_disable_column_autohiding($taxonomy_name, $_meta_value, $page_name);
}
}
}
