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;;; jao-sleep.el --- Actions upon sleep/awake -*- lexical-binding: t; -*-
;; Copyright (C) 2020 jao
;; Author: jao <mail@jao.io>
;; Keywords: hardware
;; 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/>.
;;; Code:
(require 'dbus)
(defvar jao-sleep-sleep-functions nil)
(defvar jao-sleep-awake-functions nil)
(defvar jao-sleep--dbus-registration-object nil)
(defun jao-sleep--dbus-sleep-handler (sleep-start)
(condition-case nil
(if sleep-start
(progn (message "Running on sleep functions")
(run-hooks 'jao-sleep-sleep-functions))
(message "Running on awake functions")
(run-hooks 'jao-sleep-awake-functions))
(error (message "There was an error running %s" sleep-start))))
;;;###autoload
(defun jao-sleep-dbus-register (&optional session-dbus)
"Register actions to take on sleep and on awake, using the system D-BUS."
(when (featurep 'dbusbind)
(setq jao-sleep--dbus-sleep-registration-object
(dbus-register-signal (if session-dbus :session :system)
"org.freedesktop.login1"
"/org/freedesktop/login1"
"org.freedesktop.login1.Manager"
"PrepareForSleep"
#'jao-sleep--dbus-sleep-handler))))
;;;###autoload
(defun jao-sleep-dbus-unregister ()
(condition-case nil
(dbus-unregister-object jao-sleep--dbus-sleep-registration-object)
(wrong-type-argument nil)))
(provide 'jao-sleep)
;;; jao-sleep.el ends here
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