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listitemmanager: Listen to sections-changed

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And recreate header and footer tiles as needed.

This commit was tested using a sortlistmodel, changing
the section sorter from sorting only by first char
to sorting by the first two chars, which changes
the number of sections, but leaves the alphabetic
order of items unchanged.
This commit is contained in:
Matthias Clasen 2023-05-23 13:49:04 -04:00
parent 87070e0bdd
commit 215f60e450
1 changed files with 69 additions and 0 deletions
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69
gtk/gtklistitemmanager.c
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@ -1565,6 +1565,67 @@ gtk_list_item_manager_model_items_changed_cb (GListModel *model,
gtk_widget_queue_resize (self->widget);
}
static void
gtk_list_item_manager_model_sections_changed_cb (GListModel *model,
guint position,
guint n_items,
GtkListItemManager *self)
{
GtkListItemChange change;
GtkListTile *tile, *header;
guint offset;
if (!gtk_list_item_manager_has_sections (self))
return;
gtk_list_item_change_init (&change);
tile = gtk_list_item_manager_get_nth (self, position, &offset);
header = gtk_list_tile_get_header (self, tile);
gtk_list_item_change_clear_header (&change, &header->widget);
gtk_list_tile_set_type (header, GTK_LIST_TILE_UNMATCHED_HEADER);
n_items -= MIN (n_items, position - offset);
while (n_items > 0)
{
switch (tile->type)
{
case GTK_LIST_TILE_HEADER:
case GTK_LIST_TILE_UNMATCHED_HEADER:
gtk_list_item_change_clear_header (&change, &tile->widget);
gtk_list_tile_set_type (tile, GTK_LIST_TILE_REMOVED);
break;
case GTK_LIST_TILE_FOOTER:
case GTK_LIST_TILE_UNMATCHED_FOOTER:
gtk_list_tile_set_type (tile, GTK_LIST_TILE_REMOVED);
break;
case GTK_LIST_TILE_ITEM:
n_items -= MIN (n_items, tile->n_items);
break;
case GTK_LIST_TILE_REMOVED:
default:
g_assert_not_reached ();
break;
}
tile = gtk_list_tile_get_next_skip (tile);
}
if (!gtk_list_tile_is_footer (tile))
tile = gtk_list_tile_get_footer (self, tile);
gtk_list_tile_set_type (tile, GTK_LIST_TILE_UNMATCHED_FOOTER);
gtk_list_item_manager_ensure_items (self, &change, G_MAXUINT, 0);
gtk_list_item_change_finish (&change);
gtk_widget_queue_resize (GTK_WIDGET (self->widget));
}
static void
gtk_list_item_manager_model_selection_changed_cb (GListModel *model,
guint position,
@ -1624,6 +1685,9 @@ gtk_list_item_manager_clear_model (GtkListItemManager *self)
g_signal_handlers_disconnect_by_func (self->model,
gtk_list_item_manager_model_items_changed_cb,
self);
g_signal_handlers_disconnect_by_func (self->model,
gtk_list_item_manager_model_sections_changed_cb,
self);
g_clear_object (&self->model);
gtk_list_item_manager_gc_tiles (self);
@ -1682,6 +1746,11 @@ gtk_list_item_manager_set_model (GtkListItemManager *self,
"selection-changed",
G_CALLBACK (gtk_list_item_manager_model_selection_changed_cb),
self);
if (GTK_IS_SECTION_MODEL (model))
g_signal_connect (model,
"sections-changed",
G_CALLBACK (gtk_list_item_manager_model_sections_changed_cb),
self);
gtk_list_item_change_init (&change);
gtk_list_item_manager_add_items (self, &change, 0, g_list_model_get_n_items (G_LIST_MODEL (model)));