2 * Copyright © 2011 Canonical Limited
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the licence, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
19 * Author: Ryan Lortie <desrt@desrt.ca>
24 #include "gtkmodelmenuitem.h"
26 #include "gtkmodelmenu.h"
28 struct _GtkModelMenuItem
30 GtkCheckMenuItem parent_instance;
32 GActionGroup *actions;
33 const gchar *action_name;
34 gboolean has_indicator;
35 gboolean can_activate;
39 typedef GtkCheckMenuItemClass GtkModelMenuItemClass;
41 static void gtk_model_menu_item_observer_iface_init (GActionObserverInterface *iface);
42 G_DEFINE_TYPE_WITH_CODE (GtkModelMenuItem, gtk_model_menu_item, GTK_TYPE_CHECK_MENU_ITEM,
43 G_IMPLEMENT_INTERFACE (G_TYPE_ACTION_OBSERVER, gtk_model_menu_item_observer_iface_init))
46 gtk_model_menu_item_activate (GtkMenuItem *menu_item)
48 GtkModelMenuItem *item = GTK_MODEL_MENU_ITEM (menu_item);
50 if (item->can_activate)
51 g_action_group_activate_action (item->actions, item->action_name, item->target);
55 gtk_model_menu_item_toggle_size_request (GtkMenuItem *menu_item,
58 GtkModelMenuItem *item = GTK_MODEL_MENU_ITEM (menu_item);
60 if (item->has_indicator)
61 GTK_MENU_ITEM_CLASS (gtk_model_menu_item_parent_class)
62 ->toggle_size_request (menu_item, requisition);
69 gtk_model_menu_item_draw_indicator (GtkCheckMenuItem *check_item,
72 GtkModelMenuItem *item = GTK_MODEL_MENU_ITEM (check_item);
74 if (item->has_indicator)
75 GTK_CHECK_MENU_ITEM_CLASS (gtk_model_menu_item_parent_class)
76 ->draw_indicator (check_item, cr);
80 gtk_model_menu_item_set_active (GtkModelMenuItem *item,
83 GtkCheckMenuItem *checkitem = GTK_CHECK_MENU_ITEM (item);
85 if (gtk_check_menu_item_get_active (checkitem) != active)
87 _gtk_check_menu_item_set_active (checkitem, active);
88 g_object_notify (G_OBJECT (checkitem), "active");
89 gtk_check_menu_item_toggled (checkitem);
90 gtk_widget_queue_draw (GTK_WIDGET (item));
95 gtk_model_menu_item_action_added (GActionObserver *observer,
96 GActionObservable *observable,
97 const gchar *action_name,
98 const GVariantType *parameter_type,
102 GtkModelMenuItem *item = GTK_MODEL_MENU_ITEM (observer);
104 /* we can only activate the item if we have the correct type of parameter */
105 item->can_activate = (item->target == NULL && parameter_type == NULL) ||
106 (item->target != NULL && parameter_type != NULL &&
107 g_variant_is_of_type (item->target, parameter_type));
109 if (item->can_activate)
111 if (item->target != NULL && state != NULL)
113 /* actions with states and targets are radios */
116 selected = g_variant_equal (state, item->target);
117 gtk_check_menu_item_set_draw_as_radio (GTK_CHECK_MENU_ITEM (item), TRUE);
118 gtk_model_menu_item_set_active (item, selected);
119 item->has_indicator = TRUE;
122 else if (state != NULL && g_variant_is_of_type (state, G_VARIANT_TYPE_BOOLEAN))
124 /* boolean state actions without target are checks */
125 gtk_check_menu_item_set_draw_as_radio (GTK_CHECK_MENU_ITEM (item), FALSE);
126 gtk_model_menu_item_set_active (item, g_variant_get_boolean (state));
127 item->has_indicator = TRUE;
132 /* stateless items are just plain actions */
133 gtk_model_menu_item_set_active (item, FALSE);
134 item->has_indicator = FALSE;
137 gtk_widget_set_sensitive (GTK_WIDGET (item), enabled);
138 gtk_widget_queue_resize (GTK_WIDGET (item));
143 gtk_model_menu_item_action_enabled_changed (GActionObserver *observer,
144 GActionObservable *observable,
145 const gchar *action_name,
148 GtkModelMenuItem *item = GTK_MODEL_MENU_ITEM (observer);
150 if (!item->can_activate)
153 gtk_widget_set_sensitive (GTK_WIDGET (item), item->can_activate && enabled);
157 gtk_model_menu_item_action_state_changed (GActionObserver *observer,
158 GActionObservable *observable,
159 const gchar *action_name,
162 GtkModelMenuItem *item = GTK_MODEL_MENU_ITEM (observer);
164 if (!item->can_activate)
168 gtk_model_menu_item_set_active (item, g_variant_equal (state, item->target));
170 else if (g_variant_is_of_type (state, G_VARIANT_TYPE_BOOLEAN))
171 gtk_model_menu_item_set_active (item, g_variant_get_boolean (state));
175 gtk_model_menu_item_action_removed (GActionObserver *observer,
176 GActionObservable *observable,
177 const gchar *action_name)
179 GtkModelMenuItem *item = GTK_MODEL_MENU_ITEM (observer);
181 if (!item->can_activate)
184 gtk_widget_set_sensitive (GTK_WIDGET (item), FALSE);
185 gtk_model_menu_item_set_active (item, FALSE);
186 item->has_indicator = FALSE;
188 gtk_widget_queue_resize (GTK_WIDGET (item));
192 gtk_model_menu_item_setup (GtkModelMenuItem *item,
195 GActionObservable *actions)
197 GMenuAttributeIter *iter;
202 if ((submenu = g_menu_model_get_item_link (model, item_index, "submenu")))
204 gtk_menu_item_set_submenu (GTK_MENU_ITEM (item), gtk_model_menu_create_menu (submenu, actions));
205 g_object_unref (submenu);
208 iter = g_menu_model_iterate_item_attributes (model, item_index);
209 while (g_menu_attribute_iter_get_next (iter, &key, &value))
211 if (g_str_equal (key, "label") && g_variant_is_of_type (value, G_VARIANT_TYPE_STRING))
212 gtk_menu_item_set_label (GTK_MENU_ITEM (item), g_variant_get_string (value, NULL));
214 else if (g_str_equal (key, "action") && g_variant_is_of_type (value, G_VARIANT_TYPE_STRING))
215 item->action_name = g_variant_get_string (value, NULL);
217 else if (g_str_equal (key, "target"))
218 item->target = g_variant_ref (value);
220 g_variant_unref (value);
222 g_object_unref (iter);
224 gtk_menu_item_set_use_underline (GTK_MENU_ITEM (item), TRUE);
226 if (item->action_name)
228 const GVariantType *type;
232 /* observer already causes us to hold a hard ref on the group */
233 item->actions = G_ACTION_GROUP (actions);
235 g_action_observable_register_observer (actions, item->action_name, G_ACTION_OBSERVER (item));
237 if (g_action_group_query_action (G_ACTION_GROUP (actions), item->action_name, &enabled, &type, NULL, NULL, &state))
238 gtk_model_menu_item_action_added (G_ACTION_OBSERVER (item), actions, item->action_name, type, enabled, state);
241 gtk_widget_set_sensitive (GTK_WIDGET (item), FALSE);
244 g_variant_unref (state);
249 gtk_model_menu_item_finalize (GObject *object)
251 G_OBJECT_CLASS (gtk_model_menu_item_parent_class)
256 gtk_model_menu_item_init (GtkModelMenuItem *item)
261 gtk_model_menu_item_observer_iface_init (GActionObserverInterface *iface)
263 iface->action_added = gtk_model_menu_item_action_added;
264 iface->action_enabled_changed = gtk_model_menu_item_action_enabled_changed;
265 iface->action_state_changed = gtk_model_menu_item_action_state_changed;
266 iface->action_removed = gtk_model_menu_item_action_removed;
270 gtk_model_menu_item_class_init (GtkModelMenuItemClass *class)
272 GtkCheckMenuItemClass *check_class = GTK_CHECK_MENU_ITEM_CLASS (class);
273 GtkMenuItemClass *item_class = GTK_MENU_ITEM_CLASS (class);
274 GObjectClass *object_class = G_OBJECT_CLASS (class);
276 check_class->draw_indicator = gtk_model_menu_item_draw_indicator;
278 item_class->activate = gtk_model_menu_item_activate;
279 item_class->toggle_size_request = gtk_model_menu_item_toggle_size_request;
281 object_class->finalize = gtk_model_menu_item_finalize;
285 gtk_model_menu_item_new (GMenuModel *model,
287 GActionObservable *actions)
289 GtkModelMenuItem *item;
291 item = g_object_new (GTK_TYPE_MODEL_MENU_ITEM, NULL);
293 gtk_model_menu_item_setup (item, model, item_index, actions);
295 return GTK_MENU_ITEM (item);