focus.c

   1 /*
   2  * focus.c - focus management
   3  *
   4  * Copyright © 2007-2008 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 "common/util.h"
  23 #include "tag.h"
  24 #include "focus.h"
  25 #include "client.h"
  26
  27 extern AwesomeConf globalconf;
  28
  29 static client_node_t *
  30 focus_get_node_by_client(Client *c)
  31 {
  32     client_node_t *node;
  33
  34     for(node = globalconf.focus; node; node = node->next)
  35         if(node->client == c)
  36             return node;
  37
  38     return NULL;
  39 }
  40
  41 void
  42 focus_add_client(Client *c)
  43 {
  44     client_node_t *node;
  45
  46     /* if we don't find this node, create a new one */
  47     if(!(node = focus_get_node_by_client(c)))
  48     {
  49         node = p_new(client_node_t, 1);
  50         node->client = c;
  51     }
  52     else /* if we've got a node, detach it */
  53         client_node_list_detach(&globalconf.focus, node);
  54
  55     client_node_list_push(&globalconf.focus, node);
  56 }
  57
  58 void
  59 focus_delete_client(Client *c)
  60 {
  61     client_node_t *node = focus_get_node_by_client(c);
  62
  63     if(node)
  64     {
  65         client_node_list_detach(&globalconf.focus, node);
  66         p_delete(&node);
  67     }
  68 }
  69
  70 static Client *
  71 focus_get_latest_client_for_tags(Tag **t, int nindex)
  72 {
  73     client_node_t *node;
  74     Tag **tags;
  75     int i = 0;
  76
  77     for(node = globalconf.focus; node; node = node->next)
  78         if(node->client && !node->client->skip)
  79             for(tags = t; *tags; tags++)
  80                 if(is_client_tagged(node->client, *tags))
  81                 {
  82                     if(i == nindex)
  83                         return node->client;
  84                     else
  85                         i--;
  86                 }
  87
  88     return NULL;
  89 }
  90
  91 Client *
  92 focus_get_current_client(int screen)
  93 {
  94     Tag **curtags = get_current_tags(screen);
  95     Client *sel = focus_get_latest_client_for_tags(curtags, 0);
  96     p_delete(&curtags);
  97
  98     return sel;
  99 }
 100
 101 /** Jump in focus history stack
 102  * \param screen Screen ID
 103  * \param arg Integer argument
 104  * \ingroup ui_callback
 105  */
 106 void
 107 uicb_focus_history(int screen, char *arg)
 108 {
 109     int i;
 110     Tag **curtags;
 111     Client *c;
 112
 113     if(arg)
 114     {
 115         i = atoi(arg);
 116
 117         if(i < 0)
 118         {
 119             curtags = get_current_tags(screen);
 120             c = focus_get_latest_client_for_tags(curtags, i);
 121             p_delete(&curtags);
 122             if(c)
 123                 focus(c, True, screen);
 124         }
 125     }
 126 }
 127
 128 void
 129 uicb_focus_client_byname(int screen, char *arg)
 130 {
 131     Client *c;
 132     Tag **curtags, **tag;
 133
 134     if(arg)
 135     {
 136         curtags = get_current_tags(screen);
 137         if((c = get_client_byname(globalconf.clients, arg)))
 138            for(tag = curtags; *tag; tag++)
 139                if(is_client_tagged(c, *tag))
 140                    focus(c, True, screen);
 141         p_delete(&curtags);
 142     }
 143 }
 144
 145 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80