Dogcows Code - chaz/openbox/blob - openbox/propwin.c

   1 /* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
   2
   3    propwin.c for the Openbox window manager
   4    Copyright (c) 2006        Mikael Magnusson
   5    Copyright (c) 2003-2007   Dana Jansens
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    See the COPYING file for a copy of the GNU General Public License.
  18 */
  19
  20 #include "propwin.h"
  21 #include "openbox.h"
  22
  23 typedef struct _ObPropWin     ObPropWin;
  24 typedef struct _ObPropWinData ObPropWinData;
  25
  26 struct _ObPropWinData
  27 {
  28     GSList *clients;
  29 };
  30
  31 struct _ObPropWin
  32 {
  33     Window win;
  34     ObPropWinData data[OB_NUM_PROPWIN_TYPES];
  35 };
  36
  37 /*! A hash table that maps a window to an ObPropWin */
  38 static GHashTable *propwin_map;
  39
  40 static guint window_hash(Window *w) { return *w; }
  41 static gboolean window_comp(Window *w1, Window *w2) { return *w1 == *w2; }
  42
  43 void propwin_startup(gboolean reconfig)
  44 {
  45     if (!reconfig)
  46         propwin_map = g_hash_table_new_full((GHashFunc)window_hash,
  47                                              (GEqualFunc)window_comp,
  48                                              NULL,
  49                                              g_free);
  50 }
  51
  52 void propwin_shutdown(gboolean reconfig)
  53 {
  54     if (!reconfig)
  55         g_hash_table_destroy(propwin_map);
  56     else
  57         g_assert(g_hash_table_size(propwin_map) == 0);
  58 }
  59
  60 void propwin_add(Window win, ObPropWinType type, struct _ObClient *client)
  61 {
  62     ObPropWin *p;
  63
  64     if (!win) return;
  65
  66     g_assert(client);
  67     g_assert(type < OB_NUM_PROPWIN_TYPES);
  68
  69     p = g_hash_table_lookup(propwin_map, &win);
  70     if (!p) {
  71         p = g_new0(ObPropWin, 1);
  72         p->win = win;
  73         g_hash_table_insert(propwin_map, &p->win, p);
  74         /* get property changes on this window */
  75         XSelectInput(ob_display, win, PropertyChangeMask);
  76     } else
  77         g_assert(g_slist_find(p->data[type].clients, client) == NULL);
  78
  79     if (p->data[type].clients != NULL)
  80         ob_debug("Client %s is using a property window 0x%x that is already "
  81                  "in use\n", client->title, win);
  82
  83     /* add it to the clients list */
  84     p->data[type].clients = g_slist_prepend(p->data[type].clients, client);
  85 }
  86
  87 void propwin_remove(Window win, ObPropWinType type, struct _ObClient *client)
  88 {
  89     ObPropWin *p;
  90
  91     if (!win) return;
  92
  93     p = g_hash_table_lookup(propwin_map, &win);
  94     g_assert(p);
  95
  96     /* remove it to the clients list */
  97     g_assert(g_slist_find(p->data[type].clients, client) != NULL);
  98     p->data[type].clients = g_slist_remove(p->data[type].clients, client);
  99
 100     /* no more clients left for this type */
 101     if (p->data[type].clients == NULL) {
 102         guint i;
 103         gboolean none = TRUE;
 104
 105         for (i = 0; i < OB_NUM_PROPWIN_TYPES; ++i)
 106             if (p->data[i].clients != NULL)
 107                 none = FALSE; /* another type still has a client for this
 108                                  window */
 109
 110         if (none) {
 111             /* don't get events for this window any more */
 112             XSelectInput(ob_display, win, NoEventMask);
 113             g_hash_table_remove(propwin_map, &win);
 114         }
 115     }
 116 }
 117
 118 GSList* propwin_get_clients(Window win, ObPropWinType type)
 119 {
 120     ObPropWin *p = g_hash_table_lookup(propwin_map, &win);
 121     if (p)
 122         return p->data[type].clients;
 123     else
 124         return NULL;
 125 }