+++ /dev/null
-/*
- * Copyright © 2020 Red Hat, Inc.
- *
- * 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: Matthias Clasen <mclasen@redhat.com>
- */
-
-#include "config.h"
-
-#include "gtkpropertyselection.h"
-
-#include "gtkbitset.h"
-#include "gtkintl.h"
-#include "gtkselectionmodel.h"
-
-/**
- * SECTION:gtkpropertyselection
- * @Short_description: A selection model that uses an item property
- * @Title: GtkPropertySelection
- * @see_also: #GtkSelectionModel
- *
- * GtkPropertySelection is an implementation of the #GtkSelectionModel
- * interface that stores the selected state for each item in a property
- * of the item.
- *
- * The property named by #GtkPropertySelection:property must be writable
- * boolean property of the item type. GtkPropertySelection preserves the
- * selected state of items when they are added to the model, but it does
- * not listen to changes of the property while the item is a part of the
- * model. It assumes that it has *exclusive* access to the property.
- *
- * The advantage of storing the selected state in item properties is that
- * the state is *persistent* -- when an item is removed and re-added to
- * the model, it will still have the same selection state. In particular,
- * this makes the selection persist across changes of the sort order if
- * the underlying model is a #GtkSortListModel.
- */
-
-struct _GtkPropertySelection
-{
- GObject parent_instance;
-
- GListModel *model;
- char *property;
-};
-
-struct _GtkPropertySelectionClass
-{
- GObjectClass parent_class;
-};
-
-enum {
- PROP_0,
- PROP_MODEL,
- PROP_PROPERTY,
-
- N_PROPS,
-};
-
-static GParamSpec *properties[N_PROPS] = { NULL, };
-
-static GType
-gtk_property_selection_get_item_type (GListModel *list)
-{
- GtkPropertySelection *self = GTK_PROPERTY_SELECTION (list);
-
- return g_list_model_get_item_type (self->model);
-}
-
-static guint
-gtk_property_selection_get_n_items (GListModel *list)
-{
- GtkPropertySelection *self = GTK_PROPERTY_SELECTION (list);
-
- return g_list_model_get_n_items (self->model);
-}
-
-static gpointer
-gtk_property_selection_get_item (GListModel *list,
- guint position)
-{
- GtkPropertySelection *self = GTK_PROPERTY_SELECTION (list);
-
- return g_list_model_get_item (self->model, position);
-}
-
-static void
-gtk_property_selection_list_model_init (GListModelInterface *iface)
-{
- iface->get_item_type = gtk_property_selection_get_item_type;
- iface->get_n_items = gtk_property_selection_get_n_items;
- iface->get_item = gtk_property_selection_get_item;
-}
-
-static gboolean
-is_selected (GtkPropertySelection *self,
- guint position)
-{
- gpointer item;
- gboolean ret;
-
- item = g_list_model_get_item (self->model, position);
- g_object_get (item, self->property, &ret, NULL);
- g_object_unref (item);
-
- return ret;
-}
-
-static void
-set_selected (GtkPropertySelection *self,
- guint position,
- gboolean selected)
-{
- gpointer item;
-
- item = g_list_model_get_item (self->model, position);
- g_object_set (item, self->property, selected, NULL);
- g_object_unref (item);
-}
-
-static gboolean
-gtk_property_selection_is_selected (GtkSelectionModel *model,
- guint position)
-{
- return is_selected (GTK_PROPERTY_SELECTION (model), position);
-}
-
-static gboolean
-gtk_property_selection_set_selection (GtkSelectionModel *model,
- GtkBitset *selected,
- GtkBitset *mask)
-{
- GtkPropertySelection *self = GTK_PROPERTY_SELECTION (model);
- GtkBitsetIter iter;
- guint i, n, min, max;
- gboolean has_value;
-
- n = g_list_model_get_n_items (G_LIST_MODEL (self));
- min = G_MAXUINT;
- max = 0;
-
- for (has_value = gtk_bitset_iter_init_first (&iter, mask, &i);
- has_value && i < n;
- has_value = gtk_bitset_iter_next (&iter, &i))
- {
- set_selected (self, i, gtk_bitset_contains (selected, i));
- /* XXX: Check if something changed? */
- min = MIN (min, i);
- max = MAX (max, i);
- }
-
- if (min <= max)
- gtk_selection_model_selection_changed (model, min, max - min + 1);
-
- return TRUE;
-}
-
-static void
-gtk_property_selection_selection_model_init (GtkSelectionModelInterface *iface)
-{
- iface->is_selected = gtk_property_selection_is_selected;
- iface->set_selection = gtk_property_selection_set_selection;
-}
-
-G_DEFINE_TYPE_EXTENDED (GtkPropertySelection, gtk_property_selection, G_TYPE_OBJECT, 0,
- G_IMPLEMENT_INTERFACE (G_TYPE_LIST_MODEL,
- gtk_property_selection_list_model_init)
- G_IMPLEMENT_INTERFACE (GTK_TYPE_SELECTION_MODEL,
- gtk_property_selection_selection_model_init))
-
-static void
-gtk_property_selection_items_changed_cb (GListModel *model,
- guint position,
- guint removed,
- guint added,
- GtkPropertySelection *self)
-{
- g_list_model_items_changed (G_LIST_MODEL (self), position, removed, added);
-}
-
-static void
-gtk_property_selection_clear_model (GtkPropertySelection *self)
-{
- if (self->model == NULL)
- return;
-
- g_signal_handlers_disconnect_by_func (self->model,
- gtk_property_selection_items_changed_cb,
- self);
- g_clear_object (&self->model);
-}
-
-static void
-gtk_property_selection_real_set_property (GObject *object,
- guint prop_id,
- const GValue *value,
- GParamSpec *pspec)
-
-{
- GtkPropertySelection *self = GTK_PROPERTY_SELECTION (object);
-
- switch (prop_id)
- {
- case PROP_MODEL:
- self->model = g_value_dup_object (value);
- g_warn_if_fail (self->model != NULL);
- g_signal_connect (self->model,
- "items-changed",
- G_CALLBACK (gtk_property_selection_items_changed_cb),
- self);
- break;
-
- case PROP_PROPERTY:
- {
- GObjectClass *class;
- GParamSpec *prop;
-
- self->property = g_value_dup_string (value);
- g_warn_if_fail (self->property != NULL);
-
- class = g_type_class_ref (g_list_model_get_item_type (self->model));
- prop = g_object_class_find_property (class, self->property);
- g_warn_if_fail (prop != NULL &&
- prop->value_type == G_TYPE_BOOLEAN &&
- ((prop->flags & (G_PARAM_READABLE|G_PARAM_WRITABLE|G_PARAM_CONSTRUCT_ONLY)) ==
- (G_PARAM_READABLE|G_PARAM_WRITABLE)));
- g_type_class_unref (class);
- }
- break;
-
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- break;
- }
-}
-
-static void
-gtk_property_selection_real_get_property (GObject *object,
- guint prop_id,
- GValue *value,
- GParamSpec *pspec)
-{
- GtkPropertySelection *self = GTK_PROPERTY_SELECTION (object);
-
- switch (prop_id)
- {
- case PROP_MODEL:
- g_value_set_object (value, self->model);
- break;
-
- case PROP_PROPERTY:
- g_value_set_string (value, self->property);
- break;
-
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- break;
- }
-}
-
-static void
-gtk_property_selection_dispose (GObject *object)
-{
- GtkPropertySelection *self = GTK_PROPERTY_SELECTION (object);
-
- gtk_property_selection_clear_model (self);
-
- g_free (self->property);
-
- G_OBJECT_CLASS (gtk_property_selection_parent_class)->dispose (object);
-}
-
-static void
-gtk_property_selection_class_init (GtkPropertySelectionClass *klass)
-{
- GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
-
- gobject_class->get_property = gtk_property_selection_real_get_property;
- gobject_class->set_property = gtk_property_selection_real_set_property;
- gobject_class->dispose = gtk_property_selection_dispose;
-
- /**
- * GtkPropertySelection:model
- *
- * The list managed by this selection
- */
- properties[PROP_MODEL] =
- g_param_spec_object ("model",
- P_("Model"),
- P_("List managed by this selection"),
- G_TYPE_LIST_MODEL,
- G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
-
- properties[PROP_PROPERTY] =
- g_param_spec_string ("property",
- P_("Property"),
- P_("Item property to store selection state in"),
- NULL,
- G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
-
- g_object_class_install_properties (gobject_class, N_PROPS, properties);
-}
-
-static void
-gtk_property_selection_init (GtkPropertySelection *self)
-{
-}
-
-/**
- * gtk_property_selection_new:
- * @model: (transfer none): the #GListModel to manage
- * @property: the item property to use
- *
- * Creates a new property selection to handle @model.
- *
- * @property must be the name of a writable boolean property
- * of the item type of @model.
- *
- * Note that GtkPropertySelection does not monitor the property
- * for changes while the item is part of the model, but it does
- * inherit the initial value when an item is added to the model.
- *
- * Returns: (transfer full) (type GtkPropertySelection): a new #GtkPropertySelection
- **/
-GListModel *
-gtk_property_selection_new (GListModel *model,
- const char *property)
-{
- g_return_val_if_fail (G_IS_LIST_MODEL (model), NULL);
-
- return g_object_new (GTK_TYPE_PROPERTY_SELECTION,
- "model", model,
- "property", property,
- NULL);
-}
-
-/**
- * gtk_property_selection_get_model:
- * @self: a #GtkPropertySelection
- *
- * Gets the underlying model.
- *
- * Returns: (transfer none): the underlying model
- */
-GListModel *
-gtk_property_selection_get_model (GtkPropertySelection *self)
-{
- g_return_val_if_fail (GTK_IS_PROPERTY_SELECTION (self), NULL);
-
- return self->model;
-}
-
-/**
- * gtk_property_selection_get_property:
- * @self: a #GtkPropertySelection
- *
- * Gets the name of the item property that @self stores
- * the selection in.
- *
- * Returns: the name of the property
- */
-const char *
-gtk_property_selection_get_property (GtkPropertySelection *self)
-{
- g_return_val_if_fail (GTK_IS_PROPERTY_SELECTION (self), NULL);
-
- return self->property;
-}
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