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     g_return_val_if_fail (server != NULL, NULL);
  50     return DISPLAY_SERVER_GET_CLASS (server)->get_parent (server);
  51 }
  52
  53 static DisplayServer *
  54 display_server_real_get_parent (DisplayServer *server)
  55 {
  56     return NULL;
  57 }
  58
  59 gboolean
  60 display_server_get_can_share (DisplayServer *server)
  61 {
  62     g_return_val_if_fail (server != NULL, FALSE);
  63     return DISPLAY_SERVER_GET_CLASS (server)->get_can_share (server);
  64 }
  65
  66 static gboolean
  67 display_server_real_get_can_share (DisplayServer *server)
  68 {
  69     return FALSE;
  70 }
  71
  72 gint
  73 display_server_get_vt (DisplayServer *server)
  74 {
  75     g_return_val_if_fail (server != NULL, -1);
  76     return DISPLAY_SERVER_GET_CLASS (server)->get_vt (server);
  77 }
  78
  79 static gint
  80 display_server_real_get_vt (DisplayServer *server)
  81 {
  82     return -1;
  83 }
  84
  85 gboolean
  86 display_server_start (DisplayServer *server)
  87 {
  88     g_return_val_if_fail (server != NULL, FALSE);
  89     return DISPLAY_SERVER_GET_CLASS (server)->start (server);
  90 }
  91
  92 gboolean
  93 display_server_get_is_ready (DisplayServer *server)
  94 {
  95     g_return_val_if_fail (server != NULL, FALSE);
  96     return server->priv->is_ready;
  97 }
  98
  99 static gboolean
 100 display_server_real_start (DisplayServer *server)
 101 {
 102     server->priv->is_ready = TRUE;
 103     g_signal_emit (server, signals[READY], 0);
 104     return TRUE;
 105 }
 106
 107 void
 108 display_server_connect_session (DisplayServer *server, Session *session)
 109 {
 110     return DISPLAY_SERVER_GET_CLASS (server)->connect_session (server, session);
 111 }
 112
 113 static void
 114 display_server_real_connect_session (DisplayServer *server, Session *session)
 115 {
 116 }
 117
 118 void
 119 display_server_disconnect_session (DisplayServer *server, Session *session)
 120 {
 121     return DISPLAY_SERVER_GET_CLASS (server)->disconnect_session (server, session);
 122 }
 123
 124 static void
 125 display_server_real_disconnect_session (DisplayServer *server, Session *session)
 126 {
 127 }
 128
 129 void
 130 display_server_stop (DisplayServer *server)
 131 {
 132     g_return_if_fail (server != NULL);
 133
 134     if (server->priv->stopping)
 135         return;
 136     server->priv->stopping = TRUE;
 137
 138     DISPLAY_SERVER_GET_CLASS (server)->stop (server);
 139 }
 140
 141 gboolean
 142 display_server_get_is_stopping (DisplayServer *server)
 143 {
 144     g_return_val_if_fail (server != NULL, FALSE);
 145     return server->priv->stopping;
 146 }
 147
 148 static void
 149 display_server_real_stop (DisplayServer *server)
 150 {
 151     g_signal_emit (server, signals[STOPPED], 0);
 152 }
 153
 154 static void
 155 display_server_init (DisplayServer *server)
 156 {
 157     server->priv = G_TYPE_INSTANCE_GET_PRIVATE (server, DISPLAY_SERVER_TYPE, DisplayServerPrivate);
 158 }
 159
 160 static void
 161 display_server_class_init (DisplayServerClass *klass)
 162 {
 163     klass->get_parent = display_server_real_get_parent;
 164     klass->get_can_share = display_server_real_get_can_share;
 165     klass->get_vt = display_server_real_get_vt;
 166     klass->start = display_server_real_start;
 167     klass->connect_session = display_server_real_connect_session;
 168     klass->disconnect_session = display_server_real_disconnect_session;
 169     klass->stop = display_server_real_stop;
 170
 171     g_type_class_add_private (klass, sizeof (DisplayServerPrivate));
 172
 173     signals[READY] =
 174         g_signal_new (DISPLAY_SERVER_SIGNAL_READY,
 175                       G_TYPE_FROM_CLASS (klass),
 176                       G_SIGNAL_RUN_LAST,
 177                       G_STRUCT_OFFSET (DisplayServerClass, ready),
 178                       NULL, NULL,
 179                       NULL,
 180                       G_TYPE_NONE, 0);
 181     signals[STOPPED] =
 182         g_signal_new (DISPLAY_SERVER_SIGNAL_STOPPED,
 183                       G_TYPE_FROM_CLASS (klass),
 184                       G_SIGNAL_RUN_LAST,
 185                       G_STRUCT_OFFSET (DisplayServerClass, stopped),
 186                       NULL, NULL,
 187                       NULL,
 188                       G_TYPE_NONE, 0);
 189 }
 190
 191 static gint
 192 display_server_real_logprefix (Logger *self, gchar *buf, gulong buflen)
 193 {
 194     return g_snprintf (buf, buflen, "DisplayServer: ");
 195 }
 196
 197 static void
 198 display_server_logger_iface_init (LoggerInterface *iface)
 199 {
 200     iface->logprefix = &display_server_real_logprefix;
 201 }