79 lines
2.5 KiB
C
79 lines
2.5 KiB
C
/*
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* Copyright © 2011 Canonical Limited
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*
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* This library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* licence or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* 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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*
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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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*
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* Authors: Ryan Lortie <desrt@desrt.ca>
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*/
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#include "config.h"
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#include "gactionobservable.h"
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G_DEFINE_INTERFACE (GActionObservable, g_action_observable, G_TYPE_OBJECT)
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/*
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* SECTION:gactionobserable
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* @short_description: an interface implemented by objects that report
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* changes to actions
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*/
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void
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g_action_observable_default_init (GActionObservableInterface *iface)
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{
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}
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/*
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* g_action_observable_register_observer:
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* @observable: a #GActionObservable
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* @action_name: the name of the action
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* @observer: the #GActionObserver to which the events will be reported
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*
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* Registers @observer as being interested in changes to @action_name on
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* @observable.
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*/
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void
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g_action_observable_register_observer (GActionObservable *observable,
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const gchar *action_name,
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GActionObserver *observer)
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{
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g_return_if_fail (G_IS_ACTION_OBSERVABLE (observable));
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G_ACTION_OBSERVABLE_GET_IFACE (observable)
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->register_observer (observable, action_name, observer);
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}
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/*
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* g_action_observable_unregister_observer:
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* @observable: a #GActionObservable
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* @action_name: the name of the action
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* @observer: the #GActionObserver to which the events will be reported
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*
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* Removes the registration of @observer as being interested in changes
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* to @action_name on @observable.
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*
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* If the observer was registered multiple times, it must be
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* unregistered an equal number of times.
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*/
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void
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g_action_observable_unregister_observer (GActionObservable *observable,
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const gchar *action_name,
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GActionObserver *observer)
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{
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g_return_if_fail (G_IS_ACTION_OBSERVABLE (observable));
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G_ACTION_OBSERVABLE_GET_IFACE (observable)
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->unregister_observer (observable, action_name, observer);
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}
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