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 "tag.h"
  23 #include "focus.h"
  24 #include "client.h"
  25
  26 extern AwesomeConf globalconf;
  27
  28 static client_node_t *
  29 focus_get_node_by_client(Client *c)
  30 {
  31     client_node_t *node;
  32
  33     for(node = globalconf.focus; node; node = node->next)
  34         if(node->client == c)
  35             return node;
  36
  37     return NULL;
  38 }
  39
  40 void
  41 focus_add_client(Client *c)
  42 {
  43     client_node_t *node;
  44
  45     /* if we don't find this node, create a new one */
  46     if(!(node = focus_get_node_by_client(c)))
  47     {
  48         node = p_new(client_node_t, 1);
  49         node->client = c;
  50     }
  51     else /* if we've got a node, detach it */
  52         client_node_list_detach(&globalconf.focus, node);
  53
  54     client_node_list_push(&globalconf.focus, node);
  55 }
  56
  57 void
  58 focus_delete_client(Client *c)
  59 {
  60     client_node_t *node = focus_get_node_by_client(c);
  61
  62     if(node)
  63     {
  64         client_node_list_detach(&globalconf.focus, node);
  65         p_delete(&node);
  66     }
  67 }
  68
  69 static Client *
  70 focus_get_latest_client_for_tags(Tag **t, int nindex)
  71 {
  72     client_node_t *node;
  73     Tag **tags;
  74     int i = 0;
  75
  76     for(node = globalconf.focus; node; node = node->next)
  77         if(node->client && ((!node->client->skip
  78            && node->client != globalconf.scratch.client)
  79            || globalconf.scratch.isvisible))
  80             for(tags = t; *tags; tags++)
  81                 if(is_client_tagged(node->client, *tags))
  82                 {
  83                     if(i == nindex)
  84                         return node->client;
  85                     else
  86                         i--;
  87                 }
  88
  89     return NULL;
  90 }
  91
  92 Client *
  93 focus_get_current_client(int screen)
  94 {
  95     Tag **curtags = tags_get_current(screen);
  96     Client *sel = focus_get_latest_client_for_tags(curtags, 0);
  97     p_delete(&curtags);
  98
  99     return sel;
 100 }
 101
 102 /** Jump back in the focus history stack.
 103  * Set arg to 0 for previous, -1 for previous of previous, etc.
 104  * \param screen Screen ID
 105  * \param arg Integer argument
 106  * \ingroup ui_callback
 107  */
 108 void
 109 uicb_focus_history(int screen, char *arg)
 110 {
 111     int i;
 112     Tag **curtags;
 113     Client *c;
 114
 115     if(arg)
 116     {
 117         i = atoi(arg);
 118
 119         if(i < 0)
 120         {
 121             curtags = tags_get_current(screen);
 122             c = focus_get_latest_client_for_tags(curtags, i);
 123             p_delete(&curtags);
 124             if(c)
 125                 client_focus(c, screen, True);
 126         }
 127     }
 128 }
 129
 130 /** Focus one of the visible clients by its name.
 131  * \param screen screen id
 132  * \param arg client's name
 133  * \ingroup ui_callback
 134  */
 135 void
 136 uicb_focus_client_byname(int screen, char *arg)
 137 {
 138     Client *c;
 139     Tag **curtags, **tag;
 140
 141     if(arg)
 142     {
 143         curtags = tags_get_current(screen);
 144         if((c = client_get_byname(globalconf.clients, arg)))
 145            for(tag = curtags; *tag; tag++)
 146                if(is_client_tagged(c, *tag))
 147                    client_focus(c, screen, True);
 148         p_delete(&curtags);
 149     }
 150 }
 151
 152 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80