;;; 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 timezone) #:use-module (gnu installer steps) #:use-module (gnu installer timezone) #:use-module (gnu installer newt page) #:use-module (guix i18n) #:use-module (srfi srfi-1) #:use-module (srfi srfi-26) #:use-module (srfi srfi-34) #:use-module (srfi srfi-35) #:use-module (ice-9 match) #:use-module (ice-9 receive) #:use-module (newt) #:export (run-timezone-page)) ;; Information textbox width. (define info-textbox-width (make-parameter 40)) (define (fill-timezones listbox timezones) "Fill the given LISTBOX with TIMEZONES. Return an association list correlating listbox keys with timezones." (map (lambda (timezone) (let ((key (append-entry-to-listbox listbox timezone))) (cons key timezone))) timezones)) (define (run-timezone-page zonetab) "Run a page displaying available timezones, grouped by regions. The user is invited to select a timezone. The selected timezone, under Posix format is returned." (define (all-but-last list) (reverse (cdr (reverse list)))) (define (run-page timezone-tree) (define (loop path) ;; XXX: Translation of time zones isn't perfect here because the ;; "iso_3166-1" domain contains translation for "territories" (like ;; "Antarctic") but not for continents (like "Africa"). (let ((timezones (locate-children timezone-tree path))) (run-listbox-selection-page #:title (G_ "Timezone") #:info-text (G_ "Please select a timezone.") #:listbox-items timezones #:listbox-item->text (cut gettext <> "iso_3166-1") #:button-text (if (null? path) (G_ "Exit") (G_ "Back")) #:button-callback-procedure (if (null? path) (lambda _ (raise (condition (&installer-step-abort)))) (lambda _ (loop (all-but-last path)))) #:listbox-callback-procedure (lambda (timezone) (let* ((timezone* (append path (list timezone))) (tz (timezone->posix-tz timezone*))) (if (timezone-has-child? timezone-tree timezone*) (loop timezone*) tz)))))) (loop '())) (let ((timezone-tree (zonetab->timezone-tree zonetab))) (run-page timezone-tree)))