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flattenlistmodel: Implement GtkSectionModel

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Each child model is reported as one section.
This commit is contained in:
Benjamin Otte
2022-02-26 04:52:16 +01:00
parent 7e4f25e1a9
commit 15f27ac44a
1 changed files with 34 additions and 2 deletions
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36
gtk/gtkflattenlistmodel.c
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@@ -21,9 +21,10 @@
#include "gtkflattenlistmodel.h"
#include "gtkrbtreeprivate.h"
#include "gtkintl.h"
#include "gtkprivate.h"
#include "gtksectionmodel.h"
#include "gtkrbtreeprivate.h"
/**
* GtkFlattenListModel:
@@ -198,8 +199,39 @@ gtk_flatten_list_model_model_init (GListModelInterface *iface)
iface->get_item = gtk_flatten_list_model_get_item;
}
static void
gtk_flatten_list_model_get_section (GtkSectionModel *model,
guint position,
guint *out_start,
guint *out_end)
{
GtkFlattenListModel *self = GTK_FLATTEN_LIST_MODEL (model);
FlattenNode *node;
guint model_pos;
node = gtk_flatten_list_model_get_nth (self->items, position, &model_pos);
if (node == NULL)
{
*out_start = gtk_flatten_list_model_get_n_items (G_LIST_MODEL (self));
*out_end = G_MAXUINT;
return;
}
*out_start = position - model_pos;
*out_start = position - model_pos + g_list_model_get_n_items (node->model);
}
static void
gtk_flatten_list_model_section_model_init (GtkSectionModelInterface *iface)
{
iface->get_section = gtk_flatten_list_model_get_section;
}
G_DEFINE_TYPE_WITH_CODE (GtkFlattenListModel, gtk_flatten_list_model, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (G_TYPE_LIST_MODEL, gtk_flatten_list_model_model_init))
G_IMPLEMENT_INTERFACE (G_TYPE_LIST_MODEL,
gtk_flatten_list_model_model_init)
G_IMPLEMENT_INTERFACE (GTK_TYPE_SECTION_MODEL,
gtk_flatten_list_model_section_model_init))
static void
gtk_flatten_list_model_items_changed_cb (GListModel *model,