focus.c

   1 /*
   2  * focus.c - focus management
   3  *
   4  * Copyright © 2007 Julien Danjou <julien@danjou.info>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  */
  21
  22 #include "util.h"
  23 #include "tag.h"
  24 #include "layout.h"
  25 #include "focus.h"
  26
  27 extern AwesomeConf globalconf;
  28
  29 static FocusList *
  30 focus_get_node_by_client(Client *c)
  31 {
  32     FocusList *fh;
  33
  34     for(fh = globalconf.focus; fh; fh = fh->prev)
  35         if(fh->client == c)
  36             return fh;
  37
  38     return NULL;
  39 }
  40
  41 static FocusList *
  42 focus_detach_node(FocusList *fl)
  43 {
  44     FocusList *tmp;
  45
  46     if(globalconf.focus == fl)
  47         globalconf.focus = fl->prev;
  48     else
  49     {
  50         for(tmp = globalconf.focus; tmp && tmp->prev != fl; tmp = tmp->prev);
  51         tmp->prev = fl->prev;
  52     }
  53
  54     return fl;
  55 }
  56
  57 static FocusList *
  58 focus_attach_node(FocusList *fl)
  59 {
  60     FocusList *old_head;
  61
  62     old_head = globalconf.focus;
  63     globalconf.focus = fl;
  64     fl->prev = old_head;
  65
  66     return fl;
  67 }
  68
  69 void
  70 focus_add_client(Client *c)
  71 {
  72     FocusList *new_fh;
  73
  74     /* if we don't find this node, create a new one */
  75     if(!(new_fh = focus_get_node_by_client(c)))
  76     {
  77         new_fh = p_new(FocusList, 1);
  78         new_fh->client = c;
  79     }
  80     else /* if we've got a node, detach it */
  81         focus_detach_node(new_fh);
  82
  83     focus_attach_node(new_fh);
  84 }
  85
  86 void
  87 focus_delete_client(Client *c)
  88 {
  89     FocusList *fc = focus_get_node_by_client(c), *target;
  90     if (fc)
  91     {
  92         target = focus_detach_node(fc);
  93         p_delete(&target);
  94     }
  95 }
  96
  97 Client *
  98 focus_get_latest_client_for_tag(int screen, Tag *t)
  99 {
 100     FocusList *fl;
 101
 102     for(fl = globalconf.focus; fl; fl = fl->prev)
 103         if(is_client_tagged(fl->client, t, screen))
 104            return fl->client;
 105
 106     return NULL;
 107 }
 108
 109 /** Jump in focus history stack
 110  * \param screen Screen ID
 111  * \param arg Integer argument
 112  * \ingroup ui_callback
 113  */
 114 void
 115 uicb_focus_history(int screen, char *arg)
 116 {
 117     int i;
 118     FocusList *fl = globalconf.focus;
 119     Tag **curtags, **tag;
 120
 121     if(arg)
 122     {
 123         i = atoi(arg);
 124
 125         if(i < 0)
 126         {
 127             curtags = get_current_tags(screen);
 128             for(; fl && i < 0; fl = fl->prev)
 129                 for(tag = curtags; *tag; tag++)
 130                     if(is_client_tagged(fl->client, *tag, screen))
 131                         i++;
 132             p_delete(&curtags);
 133             if(fl)
 134                 focus(fl->client, True, screen);
 135         }
 136     }
 137 }
 138
 139 void
 140 uicb_focus_client_byname(int screen, char *arg)
 141 {
 142     Client *c;
 143     Tag **curtags, **tag;
 144
 145     if(arg)
 146     {
 147         curtags = get_current_tags(screen);
 148         if((c = get_client_byname(globalconf.clients, arg)))
 149            for(tag = curtags; *tag; tag++)
 150                if(is_client_tagged(c, *tag, screen))
 151                    focus(c, True, screen);
 152         p_delete(&curtags);
 153     }
 154 }
 155
 156 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80