summaryrefslogtreecommitdiff
path: root/src/core/group-props.c
blob: 3ca91e370fce4e49841bf7e86d8fc1923a6b969e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */

/* MetaGroup property handling */

/* 
 * Copyright (C) 2002 Red Hat, Inc.
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This program 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
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 * 02111-1307, USA.
 */

#include <config.h>
#include "group-props.h"
#include "group-private.h"
#include "xprops.h"
#include <X11/Xatom.h>

typedef void (* InitValueFunc)   (MetaDisplay   *display,
                                  Atom           property,
                                  MetaPropValue *value);
typedef void (* ReloadValueFunc) (MetaGroup     *group,
                                  MetaPropValue *value);

struct _MetaGroupPropHooks
{
  Atom property;
  InitValueFunc   init_func;
  ReloadValueFunc reload_func;
};

static void                init_prop_value   (MetaDisplay   *display,
                                              Atom           property,
                                              MetaPropValue *value);
static void                reload_prop_value (MetaGroup     *group,
                                              MetaPropValue *value);
static MetaGroupPropHooks* find_hooks        (MetaDisplay   *display,
                                              Atom           property);



void
meta_group_reload_property (MetaGroup *group,
                            Atom       property)
{
  meta_group_reload_properties (group, &property, 1);
}

void
meta_group_reload_properties (MetaGroup  *group,
                              const Atom *properties,
                              int         n_properties)
{
  int i;
  MetaPropValue *values;

  g_return_if_fail (properties != NULL);
  g_return_if_fail (n_properties > 0);
  
  values = g_new0 (MetaPropValue, n_properties);
  
  i = 0;
  while (i < n_properties)
    {
      init_prop_value (group->display, properties[i], &values[i]);
      ++i;
    }
  
  meta_prop_get_values (group->display, group->group_leader,
                        values, n_properties);

  i = 0;
  while (i < n_properties)
    {
      reload_prop_value (group, &values[i]);
      
      ++i;
    }

  meta_prop_free_values (values, n_properties);
  
  g_free (values);
}

/* Fill in the MetaPropValue used to get the value of "property" */
static void
init_prop_value (MetaDisplay   *display,
                 Atom           property,
                 MetaPropValue *value)
{
  MetaGroupPropHooks *hooks;  

  value->type = META_PROP_VALUE_INVALID;
  value->atom = None;
  
  hooks = find_hooks (display, property);
  if (hooks && hooks->init_func != NULL)
    (* hooks->init_func) (display, property, value);
}

static void
reload_prop_value (MetaGroup    *group,
                   MetaPropValue *value)
{
  MetaGroupPropHooks *hooks;  
  
  hooks = find_hooks (group->display, value->atom);
  if (hooks && hooks->reload_func != NULL)
    (* hooks->reload_func) (group, value);
}

static void
init_wm_client_machine (MetaDisplay   *display,
                        Atom           property,
                        MetaPropValue *value)
{
  value->type = META_PROP_VALUE_STRING;
  value->atom = display->atom_WM_CLIENT_MACHINE;
}

static void
reload_wm_client_machine (MetaGroup     *group,
                          MetaPropValue *value)
{
  g_free (group->wm_client_machine);
  group->wm_client_machine = NULL;
  
  if (value->type != META_PROP_VALUE_INVALID)
    group->wm_client_machine = g_strdup (value->v.str);

  meta_verbose ("Group has client machine \"%s\"\n",
                group->wm_client_machine ? group->wm_client_machine : "unset");
}

static void
init_net_startup_id (MetaDisplay   *display,
                     Atom           property,
                     MetaPropValue *value)
{
  value->type = META_PROP_VALUE_UTF8;
  value->atom = display->atom__NET_STARTUP_ID;
}

static void
reload_net_startup_id (MetaGroup     *group,
                       MetaPropValue *value)
{
  g_free (group->startup_id);
  group->startup_id = NULL;
  
  if (value->type != META_PROP_VALUE_INVALID)
    group->startup_id = g_strdup (value->v.str);
  
  meta_verbose ("Group has startup id \"%s\"\n",
                group->startup_id ? group->startup_id : "unset");
}

#define N_HOOKS 3

void
meta_display_init_group_prop_hooks (MetaDisplay *display)
{
  int i;
  MetaGroupPropHooks *hooks;
  
  g_assert (display->group_prop_hooks == NULL);

  display->group_prop_hooks = g_new0 (MetaGroupPropHooks, N_HOOKS); 
  hooks = display->group_prop_hooks;
  
  i = 0;

  hooks[i].property = display->atom_WM_CLIENT_MACHINE;
  hooks[i].init_func = init_wm_client_machine;
  hooks[i].reload_func = reload_wm_client_machine;
  ++i;

  hooks[i].property = display->atom__NET_WM_PID;
  hooks[i].init_func = NULL;
  hooks[i].reload_func = NULL;
  ++i;

  hooks[i].property = display->atom__NET_STARTUP_ID;
  hooks[i].init_func = init_net_startup_id;
  hooks[i].reload_func = reload_net_startup_id;
  ++i;
  
  if (i != N_HOOKS)
    g_error ("Initialized %d group hooks should have been %d\n", i, N_HOOKS);
}

void
meta_display_free_group_prop_hooks (MetaDisplay *display)
{
  g_assert (display->group_prop_hooks != NULL);
  
  g_free (display->group_prop_hooks);
  display->group_prop_hooks = NULL;
}

static MetaGroupPropHooks*
find_hooks (MetaDisplay *display,
            Atom         property)
{
  int i;

  /* FIXME we could sort the array and do binary search or
   * something
   */
  
  i = 0;
  while (i < N_HOOKS)
    {
      if (display->group_prop_hooks[i].property == property)
        return &display->group_prop_hooks[i];
      
      ++i;
    }

  return NULL;
}