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/*
* Copyright 2013 Canonical Ltd.
*
* Authors:
* Charles Kerr <charles.kerr@canonical.com>
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 3, as published
* by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranties of
* MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "device-provider.h"
enum
{
SIGNAL_DEVICES_CHANGED,
SIGNAL_LAST
};
static guint signals[SIGNAL_LAST] = { 0 };
G_DEFINE_INTERFACE (IndicatorPowerDeviceProvider,
indicator_power_device_provider,
0)
static void
indicator_power_device_provider_default_init (IndicatorPowerDeviceProviderInterface * klass)
{
signals[SIGNAL_DEVICES_CHANGED] = g_signal_new (
"devices-changed",
G_TYPE_FROM_CLASS(klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (IndicatorPowerDeviceProviderInterface, devices_changed),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
}
/***
**** PUBLIC API
***/
/**
* Get a list of devices
*
* An easy way to free the list properly in one step is as follows:
*
* g_slist_free_full (list, (GDestroyNotify)g_object_unref);
*
* Return value: (element-type IndicatorPowerDevice)
* (transfer full):
* list of devices
*/
GList *
indicator_power_device_provider_get_devices (IndicatorPowerDeviceProvider * self)
{
GList * devices;
IndicatorPowerDeviceProviderInterface * iface;
g_return_val_if_fail (INDICATOR_IS_POWER_DEVICE_PROVIDER (self), NULL);
iface = INDICATOR_POWER_DEVICE_PROVIDER_GET_INTERFACE (self);
if (iface->get_devices != NULL)
devices = iface->get_devices (self);
else
devices = NULL;
return devices;
}
/**
* Emits the "devices-changed" signal.
*
* This should only be called by subclasses.
*/
void
indicator_power_device_provider_emit_devices_changed (IndicatorPowerDeviceProvider * self)
{
g_return_if_fail (INDICATOR_IS_POWER_DEVICE_PROVIDER (self));
g_signal_emit (self, signals[SIGNAL_DEVICES_CHANGED], 0, NULL);
}
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