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     /* TRUE when started */
  26     gboolean is_ready;
  27
  28     /* TRUE when being stopped */
  29     gboolean stopping;
  30
  31     /* TRUE when the display server has stopped */
  32     gboolean stopped;
  33 };
  34
  35 static void display_server_logger_iface_init (LoggerInterface *iface);
  36
  37 G_DEFINE_TYPE_WITH_CODE (DisplayServer, display_server, G_TYPE_OBJECT,
  38                          G_IMPLEMENT_INTERFACE (LOGGER_TYPE, display_server_logger_iface_init));
  39
  40 const gchar *
  41 display_server_get_session_type (DisplayServer *server)
  42 {
  43     return DISPLAY_SERVER_GET_CLASS (server)->get_session_type (server);
  44 }
  45
  46 DisplayServer *
  47 display_server_get_parent (DisplayServer *server)
  48 {
  49     return DISPLAY_SERVER_GET_CLASS (server)->get_parent (server);
  50 }
  51
  52 static DisplayServer *
  53 display_server_real_get_parent (DisplayServer *server)
  54 {
  55     return NULL;
  56 }
  57
  58 gboolean
  59 display_server_get_can_share (DisplayServer *server)
  60 {
  61     return DISPLAY_SERVER_GET_CLASS (server)->get_can_share (server);
  62 }
  63
  64 static gboolean
  65 display_server_real_get_can_share (DisplayServer *server)
  66 {
  67     return FALSE;
  68 }
  69
  70 gint
  71 display_server_get_vt (DisplayServer *server)
  72 {
  73     g_return_val_if_fail (server != NULL, -1);
  74     return DISPLAY_SERVER_GET_CLASS (server)->get_vt (server);
  75 }
  76
  77 static gint
  78 display_server_real_get_vt (DisplayServer *server)
  79 {
  80     return -1;
  81 }
  82
  83 gboolean
  84 display_server_start (DisplayServer *server)
  85 {
  86     g_return_val_if_fail (server != NULL, FALSE);
  87     return DISPLAY_SERVER_GET_CLASS (server)->start (server);
  88 }
  89
  90 gboolean
  91 display_server_get_is_ready (DisplayServer *server)
  92 {
  93     g_return_val_if_fail (server != NULL, FALSE);
  94     return server->priv->is_ready;
  95 }
  96
  97 static gboolean
  98 display_server_real_start (DisplayServer *server)
  99 {
 100     server->priv->is_ready = TRUE;
 101     g_signal_emit (server, signals[READY], 0);
 102     return TRUE;
 103 }
 104
 105 void
 106 display_server_connect_session (DisplayServer *server, Session *session)
 107 {
 108     return DISPLAY_SERVER_GET_CLASS (server)->connect_session (server, session);
 109 }
 110
 111 static void
 112 display_server_real_connect_session (DisplayServer *server, Session *session)
 113 {
 114 }
 115
 116 void
 117 display_server_disconnect_session (DisplayServer *server, Session *session)
 118 {
 119     return DISPLAY_SERVER_GET_CLASS (server)->disconnect_session (server, session);
 120 }
 121
 122 static void
 123 display_server_real_disconnect_session (DisplayServer *server, Session *session)
 124 {
 125 }
 126
 127 void
 128 display_server_stop (DisplayServer *server)
 129 {
 130     g_return_if_fail (server != NULL);
 131
 132     if (server->priv->stopping)
 133         return;
 134     server->priv->stopping = TRUE;
 135
 136     DISPLAY_SERVER_GET_CLASS (server)->stop (server);
 137 }
 138
 139 gboolean
 140 display_server_get_is_stopping (DisplayServer *server)
 141 {
 142     g_return_val_if_fail (server != NULL, FALSE);
 143     return server->priv->stopping;
 144 }
 145
 146 static void
 147 display_server_real_stop (DisplayServer *server)
 148 {
 149     g_signal_emit (server, signals[STOPPED], 0);
 150 }
 151
 152 static void
 153 display_server_init (DisplayServer *server)
 154 {
 155     server->priv = G_TYPE_INSTANCE_GET_PRIVATE (server, DISPLAY_SERVER_TYPE, DisplayServerPrivate);
 156 }
 157
 158 static void
 159 display_server_class_init (DisplayServerClass *klass)
 160 {
 161     klass->get_parent = display_server_real_get_parent;
 162     klass->get_can_share = display_server_real_get_can_share;
 163     klass->get_vt = display_server_real_get_vt;
 164     klass->start = display_server_real_start;
 165     klass->connect_session = display_server_real_connect_session;
 166     klass->disconnect_session = display_server_real_disconnect_session;
 167     klass->stop = display_server_real_stop;
 168
 169     g_type_class_add_private (klass, sizeof (DisplayServerPrivate));
 170
 171     signals[READY] =
 172         g_signal_new (DISPLAY_SERVER_SIGNAL_READY,
 173                       G_TYPE_FROM_CLASS (klass),
 174                       G_SIGNAL_RUN_LAST,
 175                       G_STRUCT_OFFSET (DisplayServerClass, ready),
 176                       NULL, NULL,
 177                       NULL,
 178                       G_TYPE_NONE, 0);
 179     signals[STOPPED] =
 180         g_signal_new (DISPLAY_SERVER_SIGNAL_STOPPED,
 181                       G_TYPE_FROM_CLASS (klass),
 182                       G_SIGNAL_RUN_LAST,
 183                       G_STRUCT_OFFSET (DisplayServerClass, stopped),
 184                       NULL, NULL,
 185                       NULL,
 186                       G_TYPE_NONE, 0);
 187 }
 188
 189 static gint
 190 display_server_real_logprefix (Logger *self, gchar *buf, gulong buflen)
 191 {
 192     return g_snprintf (buf, buflen, "DisplayServer: ");
 193 }
 194
 195 static void
 196 display_server_logger_iface_init (LoggerInterface *iface)
 197 {
 198     iface->logprefix = &display_server_real_logprefix;
 199 }