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/*
* Copyright © 2018 Benjamin Otte
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
* Authors: Benjamin Otte <otte@gnome.org>
*/
#include "config.h"
#include "gtklistitemmanagerprivate.h"
struct _GtkListItemManager
{
GObject parent_instance;
GtkWidget *widget;
GListModel *model;
GtkListItemFactory *factory;
};
struct _GtkListItemManagerClass
{
GObjectClass parent_class;
};
G_DEFINE_TYPE (GtkListItemManager, gtk_list_item_manager, G_TYPE_OBJECT)
static void
gtk_list_item_manager_dispose (GObject *object)
{
GtkListItemManager *self = GTK_LIST_ITEM_MANAGER (object);
g_clear_object (&self->model);
g_clear_object (&self->factory);
G_OBJECT_CLASS (gtk_list_item_manager_parent_class)->dispose (object);
}
static void
gtk_list_item_manager_class_init (GtkListItemManagerClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->dispose = gtk_list_item_manager_dispose;
}
static void
gtk_list_item_manager_init (GtkListItemManager *self)
{
}
GtkListItemManager *
gtk_list_item_manager_new (GtkWidget *widget)
{
GtkListItemManager *self;
g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
self = g_object_new (GTK_TYPE_LIST_ITEM_MANAGER, NULL);
self->widget = widget;
return self;
}
void
gtk_list_item_manager_set_factory (GtkListItemManager *self,
GtkListItemFactory *factory)
{
g_return_if_fail (GTK_IS_LIST_ITEM_MANAGER (self));
g_return_if_fail (GTK_IS_LIST_ITEM_FACTORY (factory));
if (self->factory == factory)
return;
g_clear_object (&self->factory);
self->factory = g_object_ref (factory);
}
GtkListItemFactory *
gtk_list_item_manager_get_factory (GtkListItemManager *self)
{
g_return_val_if_fail (GTK_IS_LIST_ITEM_MANAGER (self), NULL);
return self->factory;
}
void
gtk_list_item_manager_set_model (GtkListItemManager *self,
GListModel *model)
{
g_return_if_fail (GTK_IS_LIST_ITEM_MANAGER (self));
g_return_if_fail (model == NULL || G_IS_LIST_MODEL (model));
if (self->model == model)
return;
g_clear_object (&self->model);
if (model)
self->model = g_object_ref (model);
}
GListModel *
gtk_list_item_manager_get_model (GtkListItemManager *self)
{
g_return_val_if_fail (GTK_IS_LIST_ITEM_MANAGER (self), NULL);
return self->model;
}
/*
* gtk_list_item_manager_model_changed:
* @self: a #GtkListItemManager
* @position: the position at which the model changed
* @removed: the number of items removed
* @added: the number of items added
*
* This function must be called by the owning @widget at the
* appropriate time.
* The manager does not connect to GListModel::items-changed itself
* but relies on its widget calling this function.
*
* This function should be called after @widget has released all
* #GListItems it intends to delete in response to the @removed rows
* but before it starts creating new ones for the @added rows.
**/
void
gtk_list_item_manager_model_changed (GtkListItemManager *self,
guint position,
guint removed,
guint added)
{
g_return_if_fail (GTK_IS_LIST_ITEM_MANAGER (self));
g_return_if_fail (self->model != NULL);
}
/*
* gtk_list_item_manager_create_list_item:
* @self: a #GtkListItemManager
* @position: the row in the model to create a list item for
* @next_sibling: the widget this widget should be inserted before or %NULL
* if none
*
* Creates a new list item widget to use for @position. No widget may
* yet exist that is used for @position.
*
* Returns: a properly setup widget to use in @position
**/
GtkWidget *
gtk_list_item_manager_create_list_item (GtkListItemManager *self,
guint position,
GtkWidget *next_sibling)
{
GtkWidget *result;
gpointer item;
g_return_val_if_fail (GTK_IS_LIST_ITEM_MANAGER (self), NULL);
g_return_val_if_fail (next_sibling == NULL || GTK_IS_WIDGET (next_sibling), NULL);
result = gtk_list_item_factory_create (self->factory);
item = g_list_model_get_item (self->model, position);
gtk_list_item_factory_bind (self->factory, result, item);
g_object_unref (item);
gtk_widget_insert_before (result, self->widget, next_sibling);
return result;
}
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