path: root/libempathy/empathy-idle.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * Copyright (C) 2007 Collabora Ltd.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This program 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
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this program; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 * 
 * Authors: Xavier Claessens <xclaesse@gmail.com>
 */

#include <config.h>

#include <string.h>

#include <glib/gi18n.h>
#include <dbus/dbus-glib.h>

#include <libtelepathy/tp-helpers.h>

#include "empathy-idle.h"
#include "empathy-utils.h" 
#include "empathy-debug.h"

#define GET_PRIV(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), \
               EMPATHY_TYPE_IDLE, EmpathyIdlePriv))

#define DEBUG_DOMAIN "Idle"

/* Number of seconds before entering extended autoaway. */
#define EXT_AWAY_TIME (30*60)

typedef enum {
    NM_STATE_UNKNOWN,
    NM_STATE_ASLEEP,
    NM_STATE_CONNECTING,
    NM_STATE_CONNECTED,
    NM_STATE_DISCONNECTED
} NMState;

struct _EmpathyIdlePriv {
    MissionControl *mc;
    DBusGProxy     *gs_proxy;
    DBusGProxy     *nm_proxy;
    gboolean        is_idle;
    McPresence      state;
    McPresence      flash_state;
    gchar          *status;
    McPresence      saved_state;
    gchar          *saved_status;
    gboolean        nm_connected;
    guint           ext_away_timeout;
};

static void     empathy_idle_class_init      (EmpathyIdleClass *klass);
static void     empathy_idle_init            (EmpathyIdle      *idle);
static void     idle_finalize                (GObject          *object);
static void     idle_get_property            (GObject          *object,
                          guint             param_id,
                          GValue           *value,
                          GParamSpec       *pspec);
static void     idle_set_property            (GObject          *object,
                          guint             param_id,
                          const GValue     *value,
                          GParamSpec       *pspec);
static void     idle_presence_changed_cb     (MissionControl   *mc,
                          McPresence        state,
                          EmpathyIdle      *idle);
static void     idle_session_idle_changed_cb (DBusGProxy       *gs_proxy,
                          gboolean          is_idle,
                          EmpathyIdle      *idle);
static void     idle_nm_state_change_cb      (DBusGProxy       *proxy,
                          guint             state,
                          EmpathyIdle      *idle);
static void     idle_ext_away_start          (EmpathyIdle      *idle);
static void     idle_ext_away_stop           (EmpathyIdle      *idle);
static gboolean idle_ext_away_cb             (EmpathyIdle      *idle);

enum {
    PROP_0,
    PROP_STATE,
    PROP_STATUS,
    PROP_FLASH_STATE
};

G_DEFINE_TYPE (EmpathyIdle, empathy_idle, G_TYPE_OBJECT)

static void
empathy_idle_class_init (EmpathyIdleClass *klass)
{
    GObjectClass *object_class = G_OBJECT_CLASS (klass);

    object_class->finalize = idle_finalize;
    object_class->get_property = idle_get_property;
    object_class->set_property = idle_set_property;

    g_object_class_install_property (object_class,
                     PROP_STATE,
                     g_param_spec_uint ("state",
                                "state",
                                "state",
                                MC_PRESENCE_UNSET,
                                LAST_MC_PRESENCE,
                                MC_PRESENCE_AVAILABLE,
                                G_PARAM_READWRITE));
    g_object_class_install_property (object_class,
                     PROP_STATUS,
                     g_param_spec_string ("status",
                                  "status",
                                  "status",
                                  NULL,
                                  G_PARAM_READWRITE));
    g_object_class_install_property (object_class,
                     PROP_FLASH_STATE,
                     g_param_spec_uint ("flash-state",
                                "flash-state",
                                "flash-state",
                                MC_PRESENCE_UNSET,
                                LAST_MC_PRESENCE,
                                MC_PRESENCE_UNSET,
                                G_PARAM_READWRITE));

    g_type_class_add_private (object_class, sizeof (EmpathyIdlePriv));
}

static void
empathy_idle_init (EmpathyIdle *idle)
{
    EmpathyIdlePriv *priv;
    DBusGConnection *system_bus;
    GError          *error = NULL;

    priv = GET_PRIV (idle);

    priv->is_idle = FALSE;
    priv->mc = empathy_mission_control_new ();
    priv->state = mission_control_get_presence_actual (priv->mc, NULL);
    idle_presence_changed_cb (priv->mc, priv->state, idle);

    dbus_g_proxy_connect_signal (DBUS_G_PROXY (priv->mc),
                     "PresenceStatusActual",
                     G_CALLBACK (idle_presence_changed_cb),
                     idle, NULL);

    priv->gs_proxy = dbus_g_proxy_new_for_name (tp_get_bus (),
                            "org.gnome.ScreenSaver",
                            "/org/gnome/ScreenSaver",
                            "org.gnome.ScreenSaver");
    if (priv->gs_proxy) {
        dbus_g_proxy_add_signal (priv->gs_proxy, "SessionIdleChanged",
                     G_TYPE_BOOLEAN,
                     G_TYPE_INVALID);
        dbus_g_proxy_connect_signal (priv->gs_proxy, "SessionIdleChanged",
                         G_CALLBACK (idle_session_idle_changed_cb),
                         idle, NULL);
    } else {
        empathy_debug (DEBUG_DOMAIN, "Failed to get gs proxy");
    }


    system_bus = dbus_g_bus_get (DBUS_BUS_SYSTEM, &error);
    if (!system_bus) {
        empathy_debug (DEBUG_DOMAIN, "Failed to get system bus: %s",
                  error ? error->message : "No error given");
    } else {
        priv->nm_proxy = dbus_g_proxy_new_for_name (system_bus,
                                "org.freedesktop.NetworkManager",
                                "/org/freedesktop/NetworkManager",
                                "org.freedesktop.NetworkManager");
    }
    if (priv->nm_proxy) {
        guint nm_status;

        dbus_g_proxy_add_signal (priv->nm_proxy, "StateChange",
                     G_TYPE_UINT, G_TYPE_INVALID);
        dbus_g_proxy_connect_signal (priv->nm_proxy, "StateChange",
                         G_CALLBACK (idle_nm_state_change_cb),
                         idle, NULL);
        dbus_g_proxy_call (priv->nm_proxy, "state",
                   &error,
                   G_TYPE_INVALID,
                   G_TYPE_UINT, &nm_status,
                   G_TYPE_INVALID);

        if (error) {
            /* Can't get actual status, NM is not working. */
            empathy_debug (DEBUG_DOMAIN, 
                       "Couldn't get NM state: %s",
                       error->message);
            g_clear_error (&error);
            g_object_unref (priv->nm_proxy);
            priv->nm_proxy = NULL;
            priv->nm_connected = TRUE;
        } else {
            priv->nm_connected = (nm_status == NM_STATE_CONNECTED);

            empathy_debug (DEBUG_DOMAIN, "NetworkManager connected: %s",
                       priv->nm_connected ? "Yes" : "No");
        }

        if (!priv->nm_connected) {
            priv->saved_state = priv->state;
            priv->saved_status = g_strdup (priv->status);
        }
    } else {
        empathy_debug (DEBUG_DOMAIN, "Failed to get nm proxy");
        priv->nm_connected = TRUE;
    }
}

static void
idle_finalize (GObject *object)
{
    EmpathyIdlePriv *priv;

    priv = GET_PRIV (object);

    g_free (priv->status);
    g_free (priv->saved_status);
    g_object_unref (priv->mc);

    if (priv->gs_proxy) {
        g_object_unref (priv->gs_proxy);
    }

    idle_ext_away_stop (EMPATHY_IDLE (object));
}

static void
idle_get_property (GObject    *object,
           guint       param_id,
           GValue     *value,
           GParamSpec *pspec)
{
    EmpathyIdlePriv *priv;
    EmpathyIdle     *idle;

    priv = GET_PRIV (object);
    idle = EMPATHY_IDLE (object);

    switch (param_id) {
    case PROP_STATE:
        g_value_set_uint (value, empathy_idle_get_state (idle));
        break;
    case PROP_STATUS:
        g_value_set_string (value, empathy_idle_get_status (idle));
        break;
    case PROP_FLASH_STATE:
        g_value_set_uint (value, empathy_idle_get_flash_state (idle));
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
        break;
    };
}

static void
idle_set_property (GObject      *object,
           guint         param_id,
           const GValue *value,
           GParamSpec   *pspec)
{
    EmpathyIdlePriv *priv;
    EmpathyIdle     *idle;

    priv = GET_PRIV (object);
    idle = EMPATHY_IDLE (object);

    switch (param_id) {
    case PROP_STATE:
        empathy_idle_set_state (idle, g_value_get_uint (value));
        break;
    case PROP_STATUS:
        empathy_idle_set_status (idle, g_value_get_string (value));
        break;
    case PROP_FLASH_STATE:
        empathy_idle_set_flash_state (idle, g_value_get_uint (value));
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
        break;
    };
}

EmpathyIdle *
empathy_idle_new (void)
{
    static EmpathyIdle *idle = NULL;

    if (!idle) {
        idle = g_object_new (EMPATHY_TYPE_IDLE, NULL);
        g_object_add_weak_pointer (G_OBJECT (idle), (gpointer) &idle);
    } else {
        g_object_ref (idle);
    }

    return idle;
}

McPresence
empathy_idle_get_state (EmpathyIdle *idle)
{
    EmpathyIdlePriv *priv;

    priv = GET_PRIV (idle);

    return priv->state;
}

void
empathy_idle_set_state (EmpathyIdle *idle,
            McPresence   state)
{
    EmpathyIdlePriv *priv;

    priv = GET_PRIV (idle);

    empathy_idle_set_presence (idle, state, priv->status);
}

const gchar *
empathy_idle_get_status (EmpathyIdle *idle)
{
    EmpathyIdlePriv *priv;

    priv = GET_PRIV (idle);

    if (!priv->status) {
        return empathy_presence_state_get_default_status (priv->state);
    }

    return priv->status;
}

void
empathy_idle_set_status (EmpathyIdle *idle,
             const gchar *status)
{
    EmpathyIdlePriv *priv;

    priv = GET_PRIV (idle);

    empathy_idle_set_presence (idle, priv->state, status);
}

McPresence
empathy_idle_get_flash_state (EmpathyIdle *idle)
{
    EmpathyIdlePriv *priv;

    priv = GET_PRIV (idle);

    return priv->flash_state;
}

void
empathy_idle_set_flash_state (EmpathyIdle *idle,
                  McPresence   state)
{
    EmpathyIdlePriv *priv;

    priv = GET_PRIV (idle);

    priv->flash_state = state;

    if (state == MC_PRESENCE_UNSET) {
    }

    g_object_notify (G_OBJECT (idle), "flash-state");
}

void
empathy_idle_set_presence (EmpathyIdle *idle,
               McPresence   state,
               const gchar *status)
{
    EmpathyIdlePriv *priv;
    const gchar     *default_status;

    priv = GET_PRIV (idle);

    empathy_debug (DEBUG_DOMAIN, "Changing presence to %s (%d)",
               status, state);

    if (!priv->nm_connected) {
        empathy_debug (DEBUG_DOMAIN,
                   "NM not connected, saving requested presence");

        g_free (priv->saved_status);
        priv->saved_state = state;
        priv->saved_status = g_strdup (status);
        return;
    }

    /* Do not set translated default messages */
    default_status = empathy_presence_state_get_default_status (state);
    if (status && strcmp (status, default_status) == 0) {
        status = NULL;
    }

    mission_control_set_presence (priv->mc,
                      state,
                      status,
                      NULL, NULL);
}

static void
idle_presence_changed_cb (MissionControl *mc,
              McPresence      state,
              EmpathyIdle    *idle)
{
    EmpathyIdlePriv *priv;

    priv = GET_PRIV (idle);

    g_free (priv->status);
    priv->state = state;
    priv->status = mission_control_get_presence_message_actual (priv->mc, NULL);

    if (G_STR_EMPTY (priv->status)) {
        g_free (priv->status);
        priv->status = NULL;
    }

    g_object_notify (G_OBJECT (idle), "state");
    g_object_notify (G_OBJECT (idle), "status");
}

static void
idle_session_idle_changed_cb (DBusGProxy  *gs_proxy,
                  gboolean     is_idle,
                  EmpathyIdle *idle)
{
    EmpathyIdlePriv *priv;

    priv = GET_PRIV (idle);

    empathy_debug (DEBUG_DOMAIN, "Session idle state changed, %s -> %s",
              priv->is_idle ? "yes" : "no",
              is_idle ? "yes" : "no");

    if (priv->state <= MC_PRESENCE_OFFLINE ||
        priv->state == MC_PRESENCE_HIDDEN) {
        /* We are not online so nothing to do here */
        priv->is_idle = is_idle;
        return;
    }

    if (is_idle && !priv->is_idle) {
        McPresence new_state;
        /* We are now idle */

        if (priv->state == MC_PRESENCE_AWAY ||
               priv->state == MC_PRESENCE_EXTENDED_AWAY) {
            /* User set away manually, when coming back we restore
             * default presence. */
            new_state = priv->state;
            priv->saved_state = MC_PRESENCE_AVAILABLE;
            priv->saved_status = NULL;
        } else {
            new_state = MC_PRESENCE_AWAY;
            priv->saved_state = priv->state;
            priv->saved_status = g_strdup (priv->status);
        }

        empathy_debug (DEBUG_DOMAIN, "Going to autoaway");
        empathy_idle_set_state (idle, new_state);

        idle_ext_away_start (idle);
    } else if (!is_idle && priv->is_idle) {
        /* We are no more idle, restore state */
        idle_ext_away_stop (idle);

        empathy_debug (DEBUG_DOMAIN, "Restoring state to %d %s",
                  priv->saved_state,
                  priv->saved_status);

        empathy_idle_set_presence (idle,
                       priv->saved_state,
                       priv->saved_status);

        g_free (priv->saved_status);
        priv->saved_status = NULL;
    }

    priv->is_idle = is_idle;
}

static void
idle_nm_state_change_cb (DBusGProxy  *proxy,
             guint        state,
             EmpathyIdle *idle)
{
    EmpathyIdlePriv *priv;

    priv = GET_PRIV (idle);

    empathy_debug (DEBUG_DOMAIN, "New network state (%d)", state);

    if (state != NM_STATE_CONNECTED && priv->nm_connected) {
        /* We are no more connected */
        idle_ext_away_stop (idle);
        g_free (priv->saved_status);
        priv->saved_state = priv->state;
        priv->saved_status = g_strdup (priv->status);

        empathy_idle_set_state (idle, MC_PRESENCE_OFFLINE);
        priv->nm_connected = FALSE;
    }
    else if (state == NM_STATE_CONNECTED && !priv->nm_connected) {
        /* We are now connected */
        priv->nm_connected = TRUE;
        empathy_idle_set_presence (idle,
                       priv->saved_state,
                       priv->saved_status);
    }
}

static void
idle_ext_away_start (EmpathyIdle *idle)
{
    EmpathyIdlePriv *priv;

    priv = GET_PRIV (idle);

    idle_ext_away_stop (idle);
    priv->ext_away_timeout = g_timeout_add (EXT_AWAY_TIME * 1000,
                        (GSourceFunc) idle_ext_away_cb,
                        idle);
}

static void
idle_ext_away_stop (EmpathyIdle *idle)
{
    EmpathyIdlePriv *priv;

    priv = GET_PRIV (idle);

    if (priv->ext_away_timeout) {
        g_source_remove (priv->ext_away_timeout);
        priv->ext_away_timeout = 0;
    }
}

static gboolean
idle_ext_away_cb (EmpathyIdle *idle)
{
    EmpathyIdlePriv *priv;

    priv = GET_PRIV (idle);

    empathy_debug (DEBUG_DOMAIN, "Going to extended autoaway");
    empathy_idle_set_state (idle, MC_PRESENCE_EXTENDED_AWAY);
    priv->ext_away_timeout = 0;

    return FALSE;
}