usr/src/lib/libeti/panel/common/top.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*      Copyright (c) 1988 AT&T */
  23 /*        All Rights Reserved   */
  24
  25
  26 /*
  27  *      Copyright (c) 1997, by Sun Microsystems, Inc.
  28  *      All rights reserved.
  29  */
  30
  31 /* A panels subsystem built on curses--Move a panel to the top */
  32
  33 #pragma ident   "%Z%%M% %I%     %E% SMI"        /* SVr4.0 1.3   */
  34
  35 /*LINTLIBRARY*/
  36
  37 #include <sys/types.h>
  38 #include <curses.h>
  39 #include "private.h"
  40
  41 /*  top_panel    */
  42 int
  43 top_panel(PANEL *panel)
  44 {
  45         _obscured_list  *obs;
  46         _obscured_list  *prev_obs, *tmp;
  47
  48         if (!panel || panel == panel -> below)
  49                 return (ERR);
  50
  51         /* If the panel is already on top, there is nothing to do */
  52
  53         if (_Top_panel == panel)
  54                 return (OK);
  55
  56         /*
  57          * All the panels that used to obscure this panel are
  58          * now obscured by this panel.
  59          */
  60
  61         if ((obs = panel -> obscured) != 0) {
  62                 do {
  63                         prev_obs = obs;
  64                         obs = obs -> next;
  65                         if ((tmp = prev_obs -> panel_p -> obscured) != 0) {
  66                                 prev_obs->next = tmp->next;
  67                                 tmp->next = prev_obs;
  68                         } else
  69                                 prev_obs->next =
  70                                     prev_obs->panel_p->obscured = prev_obs;
  71                         prev_obs -> panel_p = panel;
  72                 }
  73                 while (obs != panel -> obscured);
  74                 panel -> obscured = 0;
  75         }
  76
  77         /* Move the panel to the top */
  78
  79         if (panel == _Bottom_panel)
  80                 (_Bottom_panel = panel -> above) -> below = 0;
  81         else {
  82                 panel -> above -> below = panel -> below;
  83                 panel -> below -> above = panel -> above;
  84         }
  85
  86         panel -> above = 0;
  87         panel -> below = _Top_panel;
  88         _Top_panel = _Top_panel -> above = panel;
  89         (void) touchwin(panel -> win);
  90
  91         return (OK);
  92 }