1 | /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- |
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2 | * |
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3 | * Copyright (C) 2007 William Jon McCann <mccann@jhu.edu> |
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4 | * |
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5 | * This program is free software; you can redistribute it and/or modify |
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6 | * it under the terms of the GNU General Public License as published by |
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7 | * the Free Software Foundation; either version 2 of the License, or |
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8 | * (at your option) any later version. |
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9 | * |
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10 | * This program is distributed in the hope that it will be useful, |
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11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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13 | * GNU General Public License for more details. |
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14 | * |
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15 | * You should have received a copy of the GNU General Public License |
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16 | * along with this program; if not, write to the Free Software |
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17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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18 | * |
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19 | */ |
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20 | |
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21 | #include "config.h" |
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22 | |
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23 | #include <stdlib.h> |
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24 | #include <stdio.h> |
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25 | #include <fcntl.h> |
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26 | #include <unistd.h> |
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27 | #include <string.h> |
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28 | |
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29 | #include <glib.h> |
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30 | #include <glib/gi18n.h> |
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31 | #include <glib-object.h> |
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32 | |
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33 | #include "gdm-display-store.h" |
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34 | #include "gdm-display.h" |
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35 | |
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36 | #define GDM_DISPLAY_STORE_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GDM_TYPE_DISPLAY_STORE, GdmDisplayStorePrivate)) |
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37 | |
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38 | struct GdmDisplayStorePrivate |
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39 | { |
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40 | GHashTable *displays; |
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41 | }; |
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42 | |
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43 | enum { |
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44 | DISPLAY_ADDED, |
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45 | DISPLAY_REMOVED, |
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46 | LAST_SIGNAL |
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47 | }; |
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48 | |
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49 | static guint signals [LAST_SIGNAL] = { 0, }; |
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50 | |
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51 | static void gdm_display_store_class_init (GdmDisplayStoreClass *klass); |
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52 | static void gdm_display_store_init (GdmDisplayStore *display_store); |
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53 | static void gdm_display_store_finalize (GObject *object); |
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54 | |
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55 | G_DEFINE_TYPE (GdmDisplayStore, gdm_display_store, G_TYPE_OBJECT) |
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56 | |
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57 | GQuark |
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58 | gdm_display_store_error_quark (void) |
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59 | { |
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60 | static GQuark ret = 0; |
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61 | if (ret == 0) { |
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62 | ret = g_quark_from_static_string ("gdm_display_store_error"); |
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63 | } |
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64 | |
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65 | return ret; |
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66 | } |
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67 | |
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68 | void |
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69 | gdm_display_store_clear (GdmDisplayStore *store) |
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70 | { |
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71 | g_return_if_fail (store != NULL); |
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72 | g_debug ("GdmDisplayStore: Clearing display store"); |
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73 | g_hash_table_remove_all (store->priv->displays); |
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74 | } |
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75 | |
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76 | static gboolean |
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77 | remove_display (char *id, |
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78 | GdmDisplay *display, |
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79 | GdmDisplay *display_to_remove) |
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80 | { |
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81 | if (display == display_to_remove) { |
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82 | return TRUE; |
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83 | } |
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84 | return FALSE; |
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85 | } |
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86 | |
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87 | gboolean |
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88 | gdm_display_store_remove (GdmDisplayStore *store, |
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89 | GdmDisplay *display) |
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90 | { |
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91 | g_return_val_if_fail (store != NULL, FALSE); |
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92 | |
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93 | gdm_display_store_foreach_remove (store, |
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94 | (GdmDisplayStoreFunc)remove_display, |
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95 | display); |
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96 | return FALSE; |
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97 | } |
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98 | |
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99 | void |
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100 | gdm_display_store_foreach (GdmDisplayStore *store, |
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101 | GdmDisplayStoreFunc func, |
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102 | gpointer user_data) |
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103 | { |
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104 | g_return_if_fail (store != NULL); |
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105 | g_return_if_fail (func != NULL); |
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106 | |
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107 | g_hash_table_find (store->priv->displays, |
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108 | (GHRFunc)func, |
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109 | user_data); |
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110 | } |
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111 | |
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112 | GdmDisplay * |
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113 | gdm_display_store_find (GdmDisplayStore *store, |
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114 | GdmDisplayStoreFunc predicate, |
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115 | gpointer user_data) |
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116 | { |
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117 | GdmDisplay *display; |
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118 | |
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119 | g_return_val_if_fail (store != NULL, NULL); |
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120 | g_return_val_if_fail (predicate != NULL, NULL); |
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121 | |
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122 | display = g_hash_table_find (store->priv->displays, |
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123 | (GHRFunc)predicate, |
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124 | user_data); |
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125 | return display; |
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126 | } |
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127 | |
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128 | guint |
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129 | gdm_display_store_foreach_remove (GdmDisplayStore *store, |
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130 | GdmDisplayStoreFunc func, |
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131 | gpointer user_data) |
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132 | { |
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133 | guint ret; |
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134 | |
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135 | g_return_val_if_fail (store != NULL, 0); |
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136 | g_return_val_if_fail (func != NULL, 0); |
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137 | |
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138 | ret = g_hash_table_foreach_remove (store->priv->displays, |
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139 | (GHRFunc)func, |
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140 | user_data); |
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141 | |
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142 | return ret; |
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143 | } |
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144 | |
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145 | void |
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146 | gdm_display_store_add (GdmDisplayStore *store, |
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147 | GdmDisplay *display) |
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148 | { |
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149 | char *id; |
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150 | |
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151 | g_return_if_fail (store != NULL); |
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152 | g_return_if_fail (display != NULL); |
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153 | |
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154 | gdm_display_get_id (display, &id, NULL); |
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155 | |
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156 | g_debug ("GdmDisplayStore: Adding display %s to store", id); |
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157 | |
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158 | g_hash_table_insert (store->priv->displays, |
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159 | id, |
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160 | g_object_ref (display)); |
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161 | } |
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162 | |
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163 | static void |
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164 | gdm_display_store_class_init (GdmDisplayStoreClass *klass) |
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165 | { |
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166 | GObjectClass *object_class = G_OBJECT_CLASS (klass); |
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167 | |
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168 | object_class->finalize = gdm_display_store_finalize; |
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169 | |
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170 | signals [DISPLAY_ADDED] = |
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171 | g_signal_new ("display-added", |
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172 | G_TYPE_FROM_CLASS (object_class), |
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173 | G_SIGNAL_RUN_LAST, |
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174 | G_STRUCT_OFFSET (GdmDisplayStoreClass, display_added), |
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175 | NULL, |
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176 | NULL, |
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177 | g_cclosure_marshal_VOID__STRING, |
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178 | G_TYPE_NONE, |
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179 | 1, G_TYPE_STRING); |
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180 | signals [DISPLAY_REMOVED] = |
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181 | g_signal_new ("display-removed", |
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182 | G_TYPE_FROM_CLASS (object_class), |
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183 | G_SIGNAL_RUN_LAST, |
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184 | G_STRUCT_OFFSET (GdmDisplayStoreClass, display_removed), |
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185 | NULL, |
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186 | NULL, |
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187 | g_cclosure_marshal_VOID__STRING, |
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188 | G_TYPE_NONE, |
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189 | 1, G_TYPE_STRING); |
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190 | |
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191 | g_type_class_add_private (klass, sizeof (GdmDisplayStorePrivate)); |
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192 | } |
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193 | |
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194 | static void |
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195 | display_unref (GdmDisplay *display) |
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196 | { |
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197 | g_debug ("GdmDisplayStore: Unreffing display: %p", display); |
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198 | g_object_unref (display); |
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199 | } |
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200 | |
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201 | static void |
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202 | gdm_display_store_init (GdmDisplayStore *store) |
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203 | { |
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204 | |
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205 | store->priv = GDM_DISPLAY_STORE_GET_PRIVATE (store); |
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206 | |
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207 | store->priv->displays = g_hash_table_new_full (g_str_hash, |
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208 | g_str_equal, |
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209 | g_free, |
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210 | (GDestroyNotify) display_unref); |
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211 | } |
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212 | |
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213 | static void |
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214 | gdm_display_store_finalize (GObject *object) |
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215 | { |
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216 | GdmDisplayStore *store; |
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217 | |
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218 | g_return_if_fail (object != NULL); |
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219 | g_return_if_fail (GDM_IS_DISPLAY_STORE (object)); |
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220 | |
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221 | store = GDM_DISPLAY_STORE (object); |
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222 | |
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223 | g_return_if_fail (store->priv != NULL); |
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224 | |
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225 | g_hash_table_destroy (store->priv->displays); |
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226 | |
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227 | G_OBJECT_CLASS (gdm_display_store_parent_class)->finalize (object); |
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228 | } |
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229 | |
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230 | GdmDisplayStore * |
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231 | gdm_display_store_new (void) |
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232 | { |
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233 | GObject *object; |
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234 | |
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235 | object = g_object_new (GDM_TYPE_DISPLAY_STORE, |
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236 | NULL); |
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237 | |
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238 | return GDM_DISPLAY_STORE (object); |
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239 | } |
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