;; Copyright © 2023, Jaidyn Ann <jadedctrl@posteo.at>
;;
;; This program 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.
;;
;; This program 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 this program. If not, see <https://www.gnu.org/licenses/>.

(import (chicken io)
        qt-light)


;; Start & run the application.
(define (init)
  (let ([qt-app (qt:init)]
        [qt-win (create-window)])
    (init-window qt-win)
    (qt:run)))


;; Create the application window.
(define (create-window)
  (qt:widget (window-contents)))


;; Return the UI’s XML, read from “contacts.ui”.
;; We could generate this XML ourselves, and write a nice s-expr front-end,
;; maybe… `o`
(define (window-contents)
  (call-with-input-file
      "contact.ui"
    (lambda (in-port) (read-string #f in-port))))


;; Initialize the window.
(define (init-window window)
  (window-callbacks window)
  (qt:show window))


;; Connect callback functions to widgets’ signals.
(define (window-callbacks window)
  (let ([file→exit (qt:find window "actionQuit")])
    (if file→exit
        (qt:connect
         file→exit "triggered()"
         (qt:receiver exit)))))


(init)