. /usr/share/acpi-support/power-funcs

CheckUPowerPolicy() {
	pidof upowerd > /dev/null
}

# The (not very aptly named) function CheckPolicy checks if the current X
# console user is running a power management daemon that handles suspend/resume
# requests. This is used in various places to determine if we need to handle
# something ourselves or if we need to pass the info on to a power management
# daemon (e.g. through a fake key press).

CheckPolicy() {
	local PMS

	getXconsole
	PMS="/usr/bin/gnome-power-manager /usr/bin/kpowersave /usr/bin/xfce4-power-manager"
	PMS="$PMS /usr/bin/guidance-power-manager /usr/lib/dalston/dalston-power-applet"
	PMS="$PMS /opt/trinity/bin/tdepowersave"
	pidof -x $PMS > /dev/null ||
        { test "$XUSER" != "" && 
          pidof dcopserver > /dev/null &&
          test -x /opt/trinity/bin/dcop &&
          /opt/trinity/bin/dcop --user $XUSER kded kded loadedModules | grep -q klaptopdaemon; } ||
        PowerDevilRunning ||
	GnomeSettingsDaemonPowerRunning
}

# Find a DBUS session bus, by looking at the given process' environment and
# then send a message to that bus. If multiple processes match the given name,
# the message is sent to all of the buses (and output is simply concatenated.
DBusSend() {
	# The process to get the DBUS session address from
	local PROC_NAME="$1"

	# Parameters for dbus-send
	local DEST="$2"
	local DBUS_PATH="$3"
	local METHOD="$4"

	test -x /usr/bin/dbus-send || return 1

	local DBUS_SESS	
	for p in $(pidof "$PROC_NAME"); do
		test -r /proc/$p/environ || continue
		DBUS_SESS=$(grep -a -z "DBUS_SESSION_BUS_ADDRESS=" /proc/$p/environ || :)
		test "$DBUS_SESS" != "" || continue
		su $(ps -o user= $p) -s /bin/sh -c "$DBUS_SESS dbus-send --print-reply --dest='$DEST' '$DBUS_PATH' '$METHOD'"
	done
}

# Ask kde if the powerdevil module is loaded
PowerDevilRunning() {
	DBusSend kded4 org.kde.kded /kded org.kde.kded.loadedModules | grep -q powerdevil
}

# gnome-power-manager was integrated into gnome-settings-daemon from version
# 3.1.4, in a new Power plugin (though the handling of buttons is done in the
# MediaKeys plugin.
#
# gnome-settings-daemon does not export a list of loaded plugins, but
# fortunately the Power plugin does have its own Dbus interface we can check
# for (We can't check the MediaKeys plugin, since that has been around for
# longer).
GnomeSettingsDaemonPowerRunning() {
	DBusSend gnome-settings-daemon org.gnome.SettingsDaemon /org/gnome/SettingsDaemon/Power org.freedesktop.DBus.Introspectable.Introspect | grep -q 'interface name="org.gnome.SettingsDaemon.Power"'
}