src/display-server.c

   1 /*
   2  * Copyright (C) 2010-2011 Robert Ancell.
   3  * Author: Robert Ancell <robert.ancell@canonical.com>
   4  *
   5  * This program is free software: you can redistribute it and/or modify it under
   6  * the terms of the GNU General Public License as published by the Free Software
   7  * Foundation, either version 3 of the License, or (at your option) any later
   8  * version. See http://www.gnu.org/copyleft/gpl.html the full text of the
   9  * license.
  10  */
  11
  12 #include <config.h>
  13
  14 #include "display-server.h"
  15
  16 enum {
  17     READY,
  18     STOPPED,
  19     LAST_SIGNAL
  20 };
  21 static guint signals[LAST_SIGNAL] = { 0 };
  22
  23 struct DisplayServerPrivate
  24 {
  25     /* Unique name for this display server */
  26     gchar *name;
  27
  28     /* TRUE when being stopped */
  29     gboolean stopping;
  30
  31     /* TRUE when the display server has stopped */
  32     gboolean stopped;
  33 };
  34
  35 G_DEFINE_TYPE (DisplayServer, display_server, G_TYPE_OBJECT);
  36
  37 void
  38 display_server_set_name (DisplayServer *server, const gchar *name)
  39 {
  40     g_return_if_fail (server != NULL);
  41     g_free (server->priv->name);
  42     server->priv->name = g_strdup (name);
  43 }
  44
  45 const gchar *
  46 display_server_get_name (DisplayServer *server)
  47 {
  48     g_return_val_if_fail (server != NULL, NULL);
  49     return server->priv->name;
  50 }
  51
  52 gint
  53 display_server_get_vt (DisplayServer *server)
  54 {
  55     return DISPLAY_SERVER_GET_CLASS (server)->get_vt (server);
  56 }
  57
  58 static gint
  59 display_server_real_get_vt (DisplayServer *server)
  60 {
  61     return -1;
  62 }
  63
  64 gboolean
  65 display_server_start (DisplayServer *server)
  66 {
  67     g_return_val_if_fail (server != NULL, FALSE);
  68     return DISPLAY_SERVER_GET_CLASS (server)->start (server);
  69 }
  70
  71 static gboolean
  72 display_server_real_start (DisplayServer *server)
  73 {
  74     g_signal_emit (server, signals[READY], 0);
  75     return TRUE;
  76 }
  77
  78 void
  79 display_server_connect_session (DisplayServer *server, Session *session)
  80 {
  81     return DISPLAY_SERVER_GET_CLASS (server)->connect_session (server, session);
  82 }
  83
  84 static void
  85 display_server_real_connect_session (DisplayServer *server, Session *session)
  86 {
  87 }
  88
  89 void
  90 display_server_disconnect_session (DisplayServer *server, Session *session)
  91 {
  92     return DISPLAY_SERVER_GET_CLASS (server)->disconnect_session (server, session);
  93 }
  94
  95 static void
  96 display_server_real_disconnect_session (DisplayServer *server, Session *session)
  97 {
  98 }
  99
 100 void
 101 display_server_stop (DisplayServer *server)
 102 {
 103     g_return_if_fail (server != NULL);
 104
 105     if (server->priv->stopping)
 106         return;
 107     server->priv->stopping = TRUE;
 108
 109     DISPLAY_SERVER_GET_CLASS (server)->stop (server);
 110 }
 111
 112 gboolean
 113 display_server_get_is_stopping (DisplayServer *server)
 114 {
 115     g_return_val_if_fail (server != NULL, FALSE);
 116     return server->priv->stopping;
 117 }
 118
 119 static void
 120 display_server_real_stop (DisplayServer *server)
 121 {
 122     g_signal_emit (server, signals[STOPPED], 0);
 123 }
 124
 125 static void
 126 display_server_init (DisplayServer *server)
 127 {
 128     server->priv = G_TYPE_INSTANCE_GET_PRIVATE (server, DISPLAY_SERVER_TYPE, DisplayServerPrivate);
 129 }
 130
 131 static void
 132 display_server_class_init (DisplayServerClass *klass)
 133 {
 134     klass->get_vt = display_server_real_get_vt;
 135     klass->start = display_server_real_start;
 136     klass->connect_session = display_server_real_connect_session;
 137     klass->disconnect_session = display_server_real_disconnect_session;
 138     klass->stop = display_server_real_stop;
 139
 140     g_type_class_add_private (klass, sizeof (DisplayServerPrivate));
 141
 142     signals[READY] =
 143         g_signal_new ("ready",
 144                       G_TYPE_FROM_CLASS (klass),
 145                       G_SIGNAL_RUN_LAST,
 146                       G_STRUCT_OFFSET (DisplayServerClass, ready),
 147                       NULL, NULL,
 148                       NULL,
 149                       G_TYPE_NONE, 0);
 150     signals[STOPPED] =
 151         g_signal_new ("stopped",
 152                       G_TYPE_FROM_CLASS (klass),
 153                       G_SIGNAL_RUN_LAST,
 154                       G_STRUCT_OFFSET (DisplayServerClass, stopped),
 155                       NULL, NULL,
 156                       NULL,
 157                       G_TYPE_NONE, 0);
 158 }