Gtk.MapListModel – gtk4 – Vala Binding Reference

Description:

[ CCode ( type_id = "gtk_map_list_model_get_type ()" ) ]
public class MapListModel : Object, ListModel

A `GtkMapListModel` maps the items in a list model to different items.

`GtkMapListModel` uses a [[email protected]].

Example: Create a list of `GtkEventControllers` ```c static gpointer map_to_controllers (gpointer widget, gpointer data) { gpointer result = gtk_widget_observe_controllers (widget); g_object_unref (widget); return result; }

widgets = gtk_widget_observe_children (widget);

controllers = gtk_map_list_model_new (widgets, map_to_controllers, NULL, NULL);

model = gtk_flatten_list_model_new (GTK_TYPE_EVENT_CONTROLLER, controllers); ```

`GtkMapListModel` will attempt to discard the mapped objects as soon as they are no longer needed and recreate them if necessary.

Namespace: Gtk

Package: gtk4

Content:

Properties:

public bool has_map { get; }

If a map is set for this model

public Type item_type { get; }

The type of items.

public ListModel model { get; construct; }

The model being mapped.

public uint n_items { get; }

The number of items.

Creation methods:

public MapListModel (owned ListModel? model, owned MapListModelMapFunc? map_func)

Creates a new `GtkMapListModel` for the given arguments.

Methods:

public unowned ListModel? get_model ()

Gets the model that is currently being mapped or null if none.

public void set_map_func (owned MapListModelMapFunc? map_func)

Sets the function used to map items.

public void set_model (ListModel? model)

Sets the model to be mapped.

Inherited Members:

All known members inherited from class GLib.Object

@get
@new
@ref
@set
add_toggle_ref
add_weak_pointer
bind_property
connect
constructed
disconnect
dispose
dup_data
dup_qdata
force_floating
freeze_notify
get_class
get_data

get_property
get_qdata
get_type
getv
interface_find_property
interface_install_property
interface_list_properties
is_floating
new_valist
new_with_properties
newv
notify
notify_property
ref_count
ref_sink
remove_toggle_ref
remove_weak_pointer

replace_data
replace_qdata
set_data
set_data_full
set_property
set_qdata
set_qdata_full
set_valist
setv
steal_data
steal_qdata
thaw_notify
unref
watch_closure
weak_ref
weak_unref

All known members inherited from interface GLib.ListModel

get_item
get_item_type

get_n_items
get_object

items_changed