Interface
GtkSectionModel
since: 4.12
Description [src]
interface Gtk.SectionModel : Gio.ListModelGtkSectionModel is an interface that adds support for sections to list models.
A GtkSectionModel groups successive items into so-called sections. List widgets
like GtkListView and GtkGridView then allow displaying section headers for
these sections by installing a header factory.
Many GTK list models support sections inherently, or they pass through the sections of a model they are wrapping.
When the section groupings of a model change, the model will emit the
GtkSectionModel::sections-changed signal by calling the
gtk_section_model_sections_changed() function. All sections in the given range
then need to be queried again.
The GListModel::items-changed signal has the same effect, all sections in
that range are invalidated, too.
Available since: 4.12
Prerequisite
In order to implement SectionModel, your type must inherit fromGListModel.
Instance methods
gtk_section_model_get_section
Query the section that covers the given position. The number of
items in the section can be computed by out_end - out_start.
since: 4.12
Signals
Gtk.SectionModel::sections-changed
Emitted when the start-of-section state of some of the items in model changes.
since: 4.12
Interface structure
struct GtkSectionModelInterface {
void (* get_section) (
GtkSectionModel* self,
guint position,
guint* out_start,
guint* out_end
);
}The list of virtual functions for the GtkSectionModel interface.
No function must be implemented, but unless GtkSectionModel::get_section()
is implemented, the whole model will just be a single section.
Interface members
get_section |
|
No description available. |
Virtual methods
Gtk.SectionModel.get_section
Query the section that covers the given position. The number of
items in the section can be computed by out_end - out_start.
since: 4.12