--- /dev/null
+/*
+ * 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 <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Benjamin Otte <otte@gnome.org>
+ */
+
+#include "config.h"
+
+#include "gtknoselection.h"
+
+#include "gtkintl.h"
+#include "gtkselectionmodel.h"
+
+/**
+ * SECTION:gtknoselection
+ * @Short_description: A selection model that does not allow selecting anything
+ * @Title: GtkNoSelection
+ * @see_also: #GtkSelectionModel
+ *
+ * GtkNoSelection is an implementation of the #GtkSelectionModel interface
+ * that does not allow selecting anything.
+ *
+ * This model is meant to be used as a simple wrapper to #GListModels 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)
+{
+ GtkNoSelection *self = GTK_NO_SELECTION (list);
+
+ return g_list_model_get_item_type (self->model);
+}
+
+static guint
+gtk_no_selection_get_n_items (GListModel *list)
+{
+ GtkNoSelection *self = GTK_NO_SELECTION (list);
+
+ 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);
+
+ 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 void
+gtk_no_selection_query_range (GtkSelectionModel *model,
+ guint position,
+ guint *start_range,
+ guint *n_range,
+ gboolean *selected)
+{
+ GtkNoSelection *self = GTK_NO_SELECTION (model);
+
+ *start_range = 0;
+ *n_range = g_list_model_get_n_items (self->model);
+ *selected = FALSE;
+}
+
+static void
+gtk_no_selection_selection_model_init (GtkSelectionModelInterface *iface)
+{
+ iface->is_selected = gtk_no_selection_is_selected;
+ iface->query_range = gtk_no_selection_query_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_clear_model (self);
+ self->model = g_value_dup_object (value);
+ g_signal_connect_swapped (self->model, "items-changed",
+ G_CALLBACK (g_list_model_items_changed), self);
+ 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:
+ *
+ * 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_CONSTRUCT_ONLY | 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: (transfer none): the #GListModel to manage
+ *
+ * Creates a new selection to handle @model.
+ *
+ * Returns: (transfer full) (type GtkNoSelection): a new #GtkNoSelection
+ **/
+GtkNoSelection *
+gtk_no_selection_new (GListModel *model)
+{
+ g_return_val_if_fail (G_IS_LIST_MODEL (model), NULL);
+
+ return g_object_new (GTK_TYPE_NO_SELECTION,
+ "model", model,
+ NULL);
+}
+
+/**
+ * gtk_no_selection_get_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;
+}
+
--- /dev/null
+/*
+ * 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 <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Benjamin Otte <otte@gnome.org>
+ */
+
+#ifndef __GTK_NO_SELECTION_H__
+#define __GTK_NO_SELECTION_H__
+
+#include <gtk/gtktypes.h>
+
+G_BEGIN_DECLS
+
+#define GTK_TYPE_NO_SELECTION (gtk_no_selection_get_type ())
+
+GDK_AVAILABLE_IN_ALL
+G_DECLARE_FINAL_TYPE (GtkNoSelection, gtk_no_selection, GTK, NO_SELECTION, GObject)
+
+GDK_AVAILABLE_IN_ALL
+GtkNoSelection * gtk_no_selection_new (GListModel *model);
+
+GDK_AVAILABLE_IN_ALL
+GListModel * gtk_no_selection_get_model (GtkNoSelection *self);
+
+G_END_DECLS
+
+#endif /* __GTK_NO_SELECTION_H__ */
projects / gtk4.git / commitdiff