path: root/libempathy/empathy-idle.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * Copyright (C) 2007-2008 Collabora Ltd.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 * 
 * Authors: Xavier Claessens <xclaesse@gmail.com>
 */

#include <config.h>

#include <string.h>

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

#include <telepathy-glib/dbus.h>
#include <telepathy-glib/util.h>
#include <libmissioncontrol/mc-enum-types.h>

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

#define DEBUG_FLAG EMPATHY_DEBUG_OTHER
#include "empathy-debug.h"

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

#define GET_PRIV(obj) EMPATHY_GET_PRIV (obj, EmpathyIdle)
typedef struct {
    MissionControl *mc;
    DBusGProxy     *gs_proxy;
    DBusGProxy     *nm_proxy;

    McPresence      state;
    gchar          *status;
    McPresence      flash_state;
    gboolean        auto_away;
    gboolean        use_nm;

    McPresence      away_saved_state;
    McPresence      nm_saved_state;
    gchar          *nm_saved_status;

    gboolean        is_idle;
    gboolean        nm_connected;
    guint           ext_away_timeout;
} EmpathyIdlePriv;

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

enum {
    PROP_0,
    PROP_STATE,
    PROP_STATUS,
    PROP_FLASH_STATE,
    PROP_AUTO_AWAY,
    PROP_USE_NM
};

G_DEFINE_TYPE (EmpathyIdle, empathy_idle, G_TYPE_OBJECT);

static EmpathyIdle * idle_singleton = NULL;

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

    priv = GET_PRIV (idle);

    DEBUG ("Presence changed to '%s' (%d)", status, state);

    g_free (priv->status);
    priv->state = state;
    priv->status = NULL;
    if (!EMP_STR_EMPTY (status)) {
        priv->status = g_strdup (status);
    }

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

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

    priv = GET_PRIV (idle);

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

    return FALSE;
}

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

    priv = GET_PRIV (idle);

    if (priv->ext_away_timeout != 0) {
        return;
    }
    priv->ext_away_timeout = g_timeout_add_seconds (EXT_AWAY_TIME,
                            (GSourceFunc) idle_ext_away_cb,
                            idle);
}

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

    priv = GET_PRIV (idle);

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

    if (!priv->auto_away ||
        (priv->nm_saved_state == MC_PRESENCE_UNSET &&
         (priv->state <= MC_PRESENCE_OFFLINE ||
          priv->state == MC_PRESENCE_HIDDEN))) {
        /* We don't want to go auto away OR we explicitely asked to be
         * offline, nothing to do here */
        priv->is_idle = is_idle;
        return;
    }

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

        idle_ext_away_start (idle);

        if (priv->nm_saved_state != MC_PRESENCE_UNSET) {
                /* We are disconnected, when coming back from away
                 * we want to restore the presence before the
                 * disconnection. */
            priv->away_saved_state = priv->nm_saved_state;
        } else {
            priv->away_saved_state = priv->state;
        }

        new_state = MC_PRESENCE_AWAY;
        if (priv->state == MC_PRESENCE_EXTENDED_AWAY) {
            new_state = MC_PRESENCE_EXTENDED_AWAY;
        }

        DEBUG ("Going to autoaway. Saved state=%d, new state=%d",
            priv->away_saved_state, new_state);
        empathy_idle_set_state (idle, new_state);
    } else if (!is_idle && priv->is_idle) {
        const gchar *new_status;
        /* We are no more idle, restore state */

        idle_ext_away_stop (idle);

        if (priv->away_saved_state == MC_PRESENCE_AWAY ||
            priv->away_saved_state == MC_PRESENCE_EXTENDED_AWAY) {
            priv->away_saved_state = MC_PRESENCE_AVAILABLE;
            new_status = NULL;
        } else {
            new_status = priv->status;
        }

        DEBUG ("Restoring state to %d, reset status to %s",
            priv->away_saved_state, new_status);

        empathy_idle_set_presence (idle,
                       priv->away_saved_state,
                       new_status);

        priv->away_saved_state = MC_PRESENCE_UNSET;
    }

    priv->is_idle = is_idle;
}

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

    priv = GET_PRIV (idle);

    if (!priv->use_nm) {
        return;
    }

    old_nm_connected = priv->nm_connected;
    new_nm_connected = !(state == NM_STATE_CONNECTING ||
                 state == NM_STATE_DISCONNECTED);
    priv->nm_connected = TRUE; /* To be sure _set_state will work */

    DEBUG ("New network state %d", state);

    if (old_nm_connected && !new_nm_connected) {
        /* We are no more connected */
        DEBUG ("Disconnected: Save state %d (%s)",
                priv->state, priv->status);
        priv->nm_saved_state = priv->state;
        g_free (priv->nm_saved_status);
        priv->nm_saved_status = g_strdup (priv->status);
        empathy_idle_set_state (idle, MC_PRESENCE_OFFLINE);
    }
    else if (!old_nm_connected && new_nm_connected) {
        /* We are now connected */
        DEBUG ("Reconnected: Restore state %d (%s)",
                priv->nm_saved_state, priv->nm_saved_status);
        empathy_idle_set_presence (idle,
                priv->nm_saved_state,
                priv->nm_saved_status);
        priv->nm_saved_state = MC_PRESENCE_UNSET;
        g_free (priv->nm_saved_status);
        priv->nm_saved_status = NULL;
    }

    priv->nm_connected = new_nm_connected;
}

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

    priv = GET_PRIV (object);

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

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

    idle_ext_away_stop (EMPATHY_IDLE (object));
}

static GObject *
idle_constructor (GType type,
          guint n_props,
          GObjectConstructParam *props)
{
    GObject *retval;

    if (idle_singleton) {
        retval = g_object_ref (idle_singleton);
    } else {
        retval = G_OBJECT_CLASS (empathy_idle_parent_class)->constructor
            (type, n_props, props);

        idle_singleton = EMPATHY_IDLE (retval);
        g_object_add_weak_pointer (retval, (gpointer) &idle_singleton);
    }

    return retval;
}

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_enum (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_enum (value, empathy_idle_get_flash_state (idle));
        break;
    case PROP_AUTO_AWAY:
        g_value_set_boolean (value, empathy_idle_get_auto_away (idle));
        break;
    case PROP_USE_NM:
        g_value_set_boolean (value, empathy_idle_get_use_nm (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_enum (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_enum (value));
        break;
    case PROP_AUTO_AWAY:
        empathy_idle_set_auto_away (idle, g_value_get_boolean (value));
        break;
    case PROP_USE_NM:
        empathy_idle_set_use_nm (idle, g_value_get_boolean (value));
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
        break;
    };
}

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

    object_class->finalize = idle_finalize;
    object_class->constructor = idle_constructor;
    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_enum ("state",
                                "state",
                                "state",
                                MC_TYPE_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_enum ("flash-state",
                                "flash-state",
                                "flash-state",
                                MC_TYPE_PRESENCE,
                                MC_PRESENCE_UNSET,
                                G_PARAM_READWRITE));

     g_object_class_install_property (object_class,
                      PROP_AUTO_AWAY,
                      g_param_spec_boolean ("auto-away",
                                "Automatic set presence to away",
                                "Should it set presence to away if inactive",
                                FALSE,
                                G_PARAM_READWRITE));

     g_object_class_install_property (object_class,
                      PROP_USE_NM,
                      g_param_spec_boolean ("use-nm",
                                "Use Network Manager",
                                "Set presence according to Network Manager",
                                FALSE,
                                G_PARAM_READWRITE));

    g_type_class_add_private (object_class, sizeof (EmpathyIdlePriv));
}

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

    idle->priv = priv;
    priv->is_idle = FALSE;
    priv->mc = empathy_mission_control_dup_singleton ();
    priv->state = mission_control_get_presence_actual (priv->mc, &error);
    if (error) {
        DEBUG ("Error getting actual presence: %s", error->message);

        priv->state = MC_PRESENCE_UNSET;
        g_clear_error (&error);
    }
    priv->status = mission_control_get_presence_message_actual (priv->mc, &error);
    if (error || EMP_STR_EMPTY (priv->status)) {
        g_free (priv->status);
        priv->status = NULL;

        if (error) {
            DEBUG ("Error getting actual presence message: %s", error->message);
            g_clear_error (&error);
        }
    }

    dbus_g_proxy_connect_signal (DBUS_G_PROXY (priv->mc),
                     "PresenceChanged",
                     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 {
        DEBUG ("Failed to get gs proxy");
    }


    system_bus = dbus_g_bus_get (DBUS_BUS_SYSTEM, &error);
    if (!system_bus) {
        DEBUG ("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) {
        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);
    } else {
        DEBUG ("Failed to get nm proxy");
    }

    priv->nm_connected = TRUE;
}

EmpathyIdle *
empathy_idle_dup_singleton (void)
{
    return g_object_new (EMPATHY_TYPE_IDLE, NULL);
}

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_get_default_message (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);

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

    /* Do not set translated default messages */
    default_status = empathy_presence_get_default_message (state);
    if (!tp_strdiff (status, default_status)) {
        status = NULL;
    }

    if (!priv->nm_connected) {
        DEBUG ("NM not connected");

        priv->nm_saved_state = state;
        if (tp_strdiff (priv->status, status)) {
            g_free (priv->status);
            priv->status = NULL;
            if (!EMP_STR_EMPTY (status)) {
                priv->status = g_strdup (status);
            }
            g_object_notify (G_OBJECT (idle), "status");
        }

        return;
    }

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

gboolean
empathy_idle_get_auto_away (EmpathyIdle *idle)
{
    EmpathyIdlePriv *priv = GET_PRIV (idle);

    return priv->auto_away;
}

void
empathy_idle_set_auto_away (EmpathyIdle *idle,
                gboolean     auto_away)
{
    EmpathyIdlePriv *priv = GET_PRIV (idle);

    priv->auto_away = auto_away;

    g_object_notify (G_OBJECT (idle), "auto-away");
}

gboolean
empathy_idle_get_use_nm (EmpathyIdle *idle)
{
    EmpathyIdlePriv *priv = GET_PRIV (idle);

    return priv->use_nm;
}

void
empathy_idle_set_use_nm (EmpathyIdle *idle,
             gboolean     use_nm)
{
    EmpathyIdlePriv *priv = GET_PRIV (idle);

    if (!priv->nm_proxy || use_nm == priv->use_nm) {
        return;
    }

    priv->use_nm = use_nm;

    if (use_nm) {
        guint   nm_status;
        GError *error = NULL;

        dbus_g_proxy_call (priv->nm_proxy, "state",
                   &error,
                   G_TYPE_INVALID,
                   G_TYPE_UINT, &nm_status,
                   G_TYPE_INVALID);

        if (error) {
            DEBUG ("Couldn't get NM state: %s", error->message);
            g_clear_error (&error);
            nm_status = NM_STATE_ASLEEP;
        }
        
        idle_nm_state_change_cb (priv->nm_proxy, nm_status, idle);
    } else {
        priv->nm_connected = TRUE;
        if (priv->nm_saved_state != MC_PRESENCE_UNSET) {
            empathy_idle_set_state (idle, priv->nm_saved_state);
        }
        priv->nm_saved_state = MC_PRESENCE_UNSET;
    }

    g_object_notify (G_OBJECT (idle), "use-nm");
}