Sorter

Object Hierarchy:

Description:

[ CCode ( type_id = "gtk_sorter_get_type ()" ) ]
public class Sorter : Object

`GtkSorter` is an object to describe sorting criteria.

Its primary user is [class@Gtk.SortListModel]

The model will use a sorter to determine the order in which its items should appear by calling [method@Gtk.Sorter.compare] for pairs of items.

Sorters may change their sorting behavior through their lifetime. In that case, they will emit the [signal@Gtk.Sorter:GtkSorter:changed] signal to notify that the sort order is no longer valid and should be updated by calling compare again.

GTK provides various pre-made sorter implementations for common sorting operations. [class@Gtk.ColumnView] has built-in support for sorting lists via the [property@Gtk.ColumnViewColumn:sorter] property, where the user can change the sorting by clicking on list headers.

Of course, in particular for large lists, it is also possible to subclass `GtkSorter` and provide one's own sorter.

All known sub-classes:

Namespace: Gtk

Package: gtk4

Content:

Creation methods:

protected Sorter ()

Methods:

public virtual Ordering compare (Object? item1, Object? item2)
Compares two given items according to the sort order implemented by the sorter.
public virtual SorterOrder get_order ()
Gets the order that this conforms to.

Signals:

public signal void changed (SorterChange change)
Emitted whenever the sorter changed.

Inherited Members:

All known members inherited from class GLib.Object