;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2018 Mathieu Othacehe <m.othacehe@gmail.com>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.

(define-module (gnu installer newt utils)
  #:use-module (ice-9 receive)
  #:use-module (newt)
  #:export (screen-columns
            screen-rows

            destroy-form-and-pop
            set-screen-size!))

;; Number of columns and rows of the terminal.
(define screen-columns (make-parameter 0))
(define screen-rows    (make-parameter 0))

(define (destroy-form-and-pop form)
  "Destroy the given FORM and pop the current window."
  (destroy-form form)
  (pop-window))

(define (set-screen-size!)
  "Set the parameters 'screen-columns' and 'screen-rows' to the number of
columns and rows respectively of the current terminal."
  (receive (columns rows)
      (screen-size)
    (screen-columns columns)
    (screen-rows rows)))
e52663'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/tests/guix-describe.sh'>
<input type='hidden' name='id' value='71421529d8521eb48c707ed5cdb7ea7a75e52663'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=71421529d8521eb48c707ed5cdb7ea7a75e52663'>root</a>/<a href='/guix/log/tests?id=71421529d8521eb48c707ed5cdb7ea7a75e52663'>tests</a>/<a href='/guix/log/tests/guix-describe.sh?id=71421529d8521eb48c707ed5cdb7ea7a75e52663'>guix-describe.sh</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/tests/guix-describe.sh?id=71421529d8521eb48c707ed5cdb7ea7a75e52663&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>