/*
* Copyright © 2019 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 .
*
* Authors: Benjamin Otte
*/
#include "config.h"
#include "gtknoselection.h"
#include "gtkbitset.h"
#include "gtkintl.h"
#include "gtkselectionmodel.h"
/**
* GtkNoSelection:
*
* `GtkNoSelection` is a `GtkSelectionModel` that does not allow selecting
* anything.
*
* This model is meant to be used as a simple wrapper around a `GListModel`
* when a `GtkSelectionModel` is required.
*/
struct _GtkNoSelection
{
GObject parent_instance;
GListModel *model;
};
struct _GtkNoSelectionClass
{
GObjectClass parent_class;
};
enum {
PROP_0,
PROP_MODEL,
N_PROPS
};
static GParamSpec *properties[N_PROPS] = { NULL, };
static GType
gtk_no_selection_get_item_type (GListModel *list)
{
return G_TYPE_OBJECT;
}
static guint
gtk_no_selection_get_n_items (GListModel *list)
{
GtkNoSelection *self = GTK_NO_SELECTION (list);
if (self->model == NULL)
return 0;
return g_list_model_get_n_items (self->model);
}
static gpointer
gtk_no_selection_get_item (GListModel *list,
guint position)
{
GtkNoSelection *self = GTK_NO_SELECTION (list);
if (self->model == NULL)
return NULL;
return g_list_model_get_item (self->model, position);
}
static void
gtk_no_selection_list_model_init (GListModelInterface *iface)
{
iface->get_item_type = gtk_no_selection_get_item_type;
iface->get_n_items = gtk_no_selection_get_n_items;
iface->get_item = gtk_no_selection_get_item;
}
static gboolean
gtk_no_selection_is_selected (GtkSelectionModel *model,
guint position)
{
return FALSE;
}
static GtkBitset *
gtk_no_selection_get_selection_in_range (GtkSelectionModel *model,
guint pos,
guint n_items)
{
return gtk_bitset_new_empty ();
}
static void
gtk_no_selection_selection_model_init (GtkSelectionModelInterface *iface)
{
iface->is_selected = gtk_no_selection_is_selected;
iface->get_selection_in_range = gtk_no_selection_get_selection_in_range;
}
G_DEFINE_TYPE_EXTENDED (GtkNoSelection, gtk_no_selection, G_TYPE_OBJECT, 0,
G_IMPLEMENT_INTERFACE (G_TYPE_LIST_MODEL,
gtk_no_selection_list_model_init)
G_IMPLEMENT_INTERFACE (GTK_TYPE_SELECTION_MODEL,
gtk_no_selection_selection_model_init))
static void
gtk_no_selection_clear_model (GtkNoSelection *self)
{
if (self->model == NULL)
return;
g_signal_handlers_disconnect_by_func (self->model,
g_list_model_items_changed,
self);
g_clear_object (&self->model);
}
static void
gtk_no_selection_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkNoSelection *self = GTK_NO_SELECTION (object);
switch (prop_id)
{
case PROP_MODEL:
gtk_no_selection_set_model (self, g_value_get_object (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_no_selection_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkNoSelection *self = GTK_NO_SELECTION (object);
switch (prop_id)
{
case PROP_MODEL:
g_value_set_object (value, self->model);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_no_selection_dispose (GObject *object)
{
GtkNoSelection *self = GTK_NO_SELECTION (object);
gtk_no_selection_clear_model (self);
G_OBJECT_CLASS (gtk_no_selection_parent_class)->dispose (object);
}
static void
gtk_no_selection_class_init (GtkNoSelectionClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->get_property = gtk_no_selection_get_property;
gobject_class->set_property = gtk_no_selection_set_property;
gobject_class->dispose = gtk_no_selection_dispose;
/**
* GtkNoSelection:model: (attributes org.gtk.property.get=gtk_no_selection_get_model org.gtk.Property.set=gtk_no_selection_set_model)
*
* The model being managed.
*/
properties[PROP_MODEL] =
g_param_spec_object ("model",
P_("The model"),
P_("The model being managed"),
G_TYPE_LIST_MODEL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
g_object_class_install_properties (gobject_class, N_PROPS, properties);
}
static void
gtk_no_selection_init (GtkNoSelection *self)
{
}
/**
* gtk_no_selection_new:
* @model: (allow-none) (transfer full): the `GListModel` to manage, or %NULL
*
* Creates a new selection to handle @model.
*
* Returns: (transfer full) (type GtkNoSelection): a new `GtkNoSelection`
*/
GtkNoSelection *
gtk_no_selection_new (GListModel *model)
{
GtkNoSelection *self;
g_return_val_if_fail (G_IS_LIST_MODEL (model), NULL);
self = g_object_new (GTK_TYPE_NO_SELECTION,
"model", model,
NULL);
/* consume the reference */
g_clear_object (&model);
return self;
}
/**
* gtk_no_selection_get_model: (attributes org.gtk.Method.get_property=model)
* @self: a `GtkNoSelection`
*
* Gets the model that @self is wrapping.
*
* Returns: (transfer none): The model being wrapped
*/
GListModel *
gtk_no_selection_get_model (GtkNoSelection *self)
{
g_return_val_if_fail (GTK_IS_NO_SELECTION (self), NULL);
return self->model;
}
/**
* gtk_no_selection_set_model: (attributes org.gtk.Method.set_property=model)
* @self: a `GtkNoSelection`
* @model: (allow-none): A `GListModel` to wrap
*
* Sets the model that @self should wrap.
*
* If @model is %NULL, this model will be empty.
*/
void
gtk_no_selection_set_model (GtkNoSelection *self,
GListModel *model)
{
guint n_items_before;
g_return_if_fail (GTK_IS_NO_SELECTION (self));
g_return_if_fail (model == NULL || G_IS_LIST_MODEL (model));
if (self->model == model)
return;
n_items_before = self->model ? g_list_model_get_n_items (self->model) : 0;
gtk_no_selection_clear_model (self);
if (model)
{
self->model = g_object_ref (model);
g_signal_connect_swapped (self->model, "items-changed",
G_CALLBACK (g_list_model_items_changed), self);
}
g_list_model_items_changed (G_LIST_MODEL (self),
0,
n_items_before,
model ? g_list_model_get_n_items (self->model) : 0);
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_MODEL]);
}