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maplistmodel: Handle the ::sections-changed signal

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Wrapper section models need to listen to and pass
on the ::sections-changed signal from the underlying
model.
This commit is contained in:
Matthias Clasen 2023-06-29 20:51:26 -04:00
parent 32a3690a3c
commit 9590a5f45e
1 changed files with 17 additions and 0 deletions
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17
gtk/gtkmaplistmodel.c
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@ -22,6 +22,7 @@
#include "gtkmaplistmodel.h"
#include "gtkrbtreeprivate.h"
#include "gtksectionmodel.h"
#include "gtkprivate.h"
/**
@ -54,6 +55,8 @@
*
* `GtkMapListModel` will attempt to discard the mapped objects as soon as
* they are no longer needed and recreate them if necessary.
*
* `GtkMapListModel` passes through sections from the underlying model.
*/
enum {
@ -225,6 +228,16 @@ gtk_map_list_model_get_section (GtkSectionModel *model,
*out_end = self->model ? g_list_model_get_n_items (self->model) : 0;
}
static void
gtk_map_list_model_sections_changed_cb (GtkSectionModel *model,
unsigned int position,
unsigned int n_items,
gpointer user_data)
{
gtk_section_model_sections_changed (GTK_SECTION_MODEL (user_data), position, n_items);
}
static void
gtk_map_list_model_section_model_init (GtkSectionModelInterface *iface)
{
@ -362,6 +375,7 @@ gtk_map_list_model_clear_model (GtkMapListModel *self)
if (self->model == NULL)
return;
g_signal_handlers_disconnect_by_func (self->model, gtk_map_list_model_sections_changed_cb, self);
g_signal_handlers_disconnect_by_func (self->model, gtk_map_list_model_items_changed_cb, self);
g_clear_object (&self->model);
}
@ -633,6 +647,9 @@ gtk_map_list_model_set_model (GtkMapListModel *self,
self->model = g_object_ref (model);
g_signal_connect (model, "items-changed", G_CALLBACK (gtk_map_list_model_items_changed_cb), self);
added = g_list_model_get_n_items (model);
if (GTK_IS_SECTION_MODEL (model))
g_signal_connect (model, "sections-changed", G_CALLBACK (gtk_map_list_model_sections_changed_cb), self);
}
else
{