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* Copyright © 2011 Canonical Limited
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the licence, or (at your option) any later version.
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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* Author: Ryan Lortie <desrt@desrt.ca>
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#include "gtkmodelmenuitem.h"
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#include "gtkmodelmenu.h"
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struct _GtkModelMenuItem
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GtkCheckMenuItem parent_instance;
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GActionGroup *actions;
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const gchar *action_name;
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gboolean has_indicator;
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gboolean can_activate;
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typedef GtkCheckMenuItemClass GtkModelMenuItemClass;
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static void gtk_model_menu_item_observer_iface_init (GActionObserverInterface *iface);
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G_DEFINE_TYPE_WITH_CODE (GtkModelMenuItem, gtk_model_menu_item, GTK_TYPE_CHECK_MENU_ITEM,
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G_IMPLEMENT_INTERFACE (G_TYPE_ACTION_OBSERVER, gtk_model_menu_item_observer_iface_init))
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gtk_model_menu_item_activate (GtkMenuItem *menu_item)
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GtkModelMenuItem *item = GTK_MODEL_MENU_ITEM (menu_item);
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if (item->can_activate)
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g_action_group_activate_action (item->actions, item->action_name, item->target);
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gtk_model_menu_item_toggle_size_request (GtkMenuItem *menu_item,
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GtkModelMenuItem *item = GTK_MODEL_MENU_ITEM (menu_item);
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if (item->has_indicator)
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GTK_MENU_ITEM_CLASS (gtk_model_menu_item_parent_class)
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->toggle_size_request (menu_item, requisition);
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gtk_model_menu_item_draw_indicator (GtkCheckMenuItem *check_item,
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GtkModelMenuItem *item = GTK_MODEL_MENU_ITEM (check_item);
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if (item->has_indicator)
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GTK_CHECK_MENU_ITEM_CLASS (gtk_model_menu_item_parent_class)
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->draw_indicator (check_item, cr);
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gtk_model_menu_item_set_active (GtkModelMenuItem *item,
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GtkCheckMenuItem *checkitem = GTK_CHECK_MENU_ITEM (item);
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if (gtk_check_menu_item_get_active (checkitem) != active)
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// TODO _gtk_check_menu_item_set_active (checkitem, active);
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g_object_notify (G_OBJECT (checkitem), "active");
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gtk_check_menu_item_toggled (checkitem);
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gtk_widget_queue_draw (GTK_WIDGET (item));
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gtk_model_menu_item_action_added (GActionObserver *observer,
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GActionObservable *observable,
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const gchar *action_name,
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const GVariantType *parameter_type,
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GtkModelMenuItem *item = GTK_MODEL_MENU_ITEM (observer);
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/* we can only activate the item if we have the correct type of parameter */
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item->can_activate = (item->target == NULL && parameter_type == NULL) ||
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(item->target != NULL && parameter_type != NULL &&
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g_variant_is_of_type (item->target, parameter_type));
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if (item->can_activate)
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if (item->target != NULL && state != NULL)
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/* actions with states and targets are radios */
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selected = g_variant_equal (state, item->target);
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gtk_check_menu_item_set_draw_as_radio (GTK_CHECK_MENU_ITEM (item), TRUE);
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gtk_model_menu_item_set_active (item, selected);
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item->has_indicator = TRUE;
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else if (state != NULL && g_variant_is_of_type (state, G_VARIANT_TYPE_BOOLEAN))
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/* boolean state actions without target are checks */
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gtk_check_menu_item_set_draw_as_radio (GTK_CHECK_MENU_ITEM (item), FALSE);
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gtk_model_menu_item_set_active (item, g_variant_get_boolean (state));
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item->has_indicator = TRUE;
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/* stateless items are just plain actions */
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gtk_model_menu_item_set_active (item, FALSE);
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item->has_indicator = FALSE;
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gtk_widget_set_sensitive (GTK_WIDGET (item), enabled);
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gtk_widget_queue_resize (GTK_WIDGET (item));
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gtk_model_menu_item_action_enabled_changed (GActionObserver *observer,
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GActionObservable *observable,
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const gchar *action_name,
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GtkModelMenuItem *item = GTK_MODEL_MENU_ITEM (observer);
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if (!item->can_activate)
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gtk_widget_set_sensitive (GTK_WIDGET (item), item->can_activate && enabled);
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gtk_model_menu_item_action_state_changed (GActionObserver *observer,
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GActionObservable *observable,
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const gchar *action_name,
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GtkModelMenuItem *item = GTK_MODEL_MENU_ITEM (observer);
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if (!item->can_activate)
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gtk_model_menu_item_set_active (item, g_variant_equal (state, item->target));
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else if (g_variant_is_of_type (state, G_VARIANT_TYPE_BOOLEAN))
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gtk_model_menu_item_set_active (item, g_variant_get_boolean (state));
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gtk_model_menu_item_action_removed (GActionObserver *observer,
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GActionObservable *observable,
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const gchar *action_name)
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GtkModelMenuItem *item = GTK_MODEL_MENU_ITEM (observer);
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if (!item->can_activate)
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gtk_widget_set_sensitive (GTK_WIDGET (item), FALSE);
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gtk_model_menu_item_set_active (item, FALSE);
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item->has_indicator = FALSE;
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gtk_widget_queue_resize (GTK_WIDGET (item));
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_gtk_accel_path_for_action (const gchar *action_name,
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s = g_string_new ("<GAction>/");
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g_string_append (s, action_name);
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g_string_append_c (s, '/');
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g_variant_print_string (parameter, s, FALSE);
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return g_string_free (s, FALSE);
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gtk_model_menu_item_setup (GtkModelMenuItem *item,
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GActionObservable *actions,
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GtkAccelGroup *accels)
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GMenuAttributeIter *iter;
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if ((submenu = g_menu_model_get_item_link (model, item_index, "submenu")))
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gtk_menu_item_set_submenu (GTK_MENU_ITEM (item), gtk_model_menu_create_menu (submenu, actions, accels));
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g_object_unref (submenu);
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iter = g_menu_model_iterate_item_attributes (model, item_index);
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while (g_menu_attribute_iter_get_next (iter, &key, &value))
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if (g_str_equal (key, "label") && g_variant_is_of_type (value, G_VARIANT_TYPE_STRING))
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gtk_menu_item_set_label (GTK_MENU_ITEM (item), g_variant_get_string (value, NULL));
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else if (g_str_equal (key, "action") && g_variant_is_of_type (value, G_VARIANT_TYPE_STRING))
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item->action_name = g_variant_get_string (value, NULL);
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else if (g_str_equal (key, "target"))
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item->target = g_variant_ref (value);
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g_variant_unref (value);
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g_object_unref (iter);
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gtk_menu_item_set_use_underline (GTK_MENU_ITEM (item), TRUE);
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if (item->action_name)
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const GVariantType *type;
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/* observer already causes us to hold a hard ref on the group */
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item->actions = G_ACTION_GROUP (actions);
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g_action_observable_register_observer (actions, item->action_name, G_ACTION_OBSERVER (item));
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if (g_action_group_query_action (G_ACTION_GROUP (actions), item->action_name, &enabled, &type, NULL, NULL, &state))
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gtk_model_menu_item_action_added (G_ACTION_OBSERVER (item), actions, item->action_name, type, enabled, state);
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g_variant_unref (state);
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gtk_widget_set_sensitive (GTK_WIDGET (item), FALSE);
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gtk_widget_set_sensitive (GTK_WIDGET (item), FALSE);
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path = _gtk_accel_path_for_action (item->action_name, item->target);
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gtk_menu_item_set_accel_path (GTK_MENU_ITEM (item), path);
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gtk_model_menu_item_finalize (GObject *object)
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G_OBJECT_CLASS (gtk_model_menu_item_parent_class)
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gtk_model_menu_item_init (GtkModelMenuItem *item)
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gtk_model_menu_item_observer_iface_init (GActionObserverInterface *iface)
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iface->action_added = gtk_model_menu_item_action_added;
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iface->action_enabled_changed = gtk_model_menu_item_action_enabled_changed;
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iface->action_state_changed = gtk_model_menu_item_action_state_changed;
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iface->action_removed = gtk_model_menu_item_action_removed;
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gtk_model_menu_item_class_init (GtkModelMenuItemClass *class)
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GtkCheckMenuItemClass *check_class = GTK_CHECK_MENU_ITEM_CLASS (class);
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GtkMenuItemClass *item_class = GTK_MENU_ITEM_CLASS (class);
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GObjectClass *object_class = G_OBJECT_CLASS (class);
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check_class->draw_indicator = gtk_model_menu_item_draw_indicator;
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item_class->activate = gtk_model_menu_item_activate;
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item_class->toggle_size_request = gtk_model_menu_item_toggle_size_request;
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object_class->finalize = gtk_model_menu_item_finalize;
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gtk_model_menu_item_new (GMenuModel *model,
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GActionObservable *actions,
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GtkAccelGroup *accels)
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GtkModelMenuItem *item;
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item = g_object_new (GTK_TYPE_MODEL_MENU_ITEM, NULL);
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gtk_model_menu_item_setup (item, model, item_index, actions, accels);
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return GTK_MENU_ITEM (item);