# gpx_trace - zavai GPX trace functions
#
# Copyright (C) 2009  Enrico Zini <enrico@enricozini.org>
#
# 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 2 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, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

from gettext import gettext as _
import gtk
import zavai

class GPXTracer(gtk.ToggleAction):
    states = [_("Start GPX trace"), _("Stop GPX trace")]

    def __init__(self, registry, **kw):
        self.state = 0
        super(GPXTracer, self).__init__("menu.main.gps.gpx", self.states[self.state], None, None)

        self.registry = registry
        self.set_active(False)

        self.connect("toggled", self.on_toggle)

    def on_toggle(self, *args):
        self.state = (self.state + 1) % len(self.states)
        self.set_property("label", self.states[self.state])
        if self.get_active():
            self.start()
        else:
            self.stop()

    def start(self):
        zavai.info("GPX trace started")
        self.registry.resource("gpx").connect("gpx", self)

    def stop(self):
        zavai.info("GPX trace ended")
        self.registry.resource("gpx").disconnect("gpx", self)

class GPXWaypoint(gtk.Action):
    def __init__(self, registry, **kw):
        super(GPXWaypoint, self).__init__("menu.main.gps.waypoint", _("Take waypoint"), None, None)
        self.gpx = registry.resource("gpx")
        self.gpx.add_activity_monitor(self.on_gpx_activity_changed)
        self.connect("activate", self.on_activate)

    def on_gpx_activity_changed(self, gpx, state):
        self.set_sensitive(state)

    def on_activate(self, *args):
        self.gpx.waypoint()

class GPXAudioTracer(gtk.ToggleAction):
    states = [_("Start GPX and audio trace"), _("Stop GPX and audio trace")]

    def __init__(self, registry, **kw):
        self.state = 0
        super(GPXAudioTracer, self).__init__("menu.main.gps.gpxaudio", self.states[self.state], None, None)

        self.registry = registry
        self.recorder = zavai.Recorder(registry)
        self.set_active(False)

        self.connect("toggled", self.on_toggle)

    def shutdown(self):
        self.recorder.stop()
        super(GPXAudioTracer, self).shutdown()

    def on_toggle(self, *args):
        self.state = (self.state + 1) % len(self.states)
        self.set_property("label", self.states[self.state])
        if self.get_active():
            self.start()
        else:
            self.stop()

    def start(self):
        zavai.info("GPX trace started")
        gpx = self.registry.resource("gpx")
        gpx.connect("gpx", self)
        gpx.add_activity_monitor(self.on_gpx_activity_changed)

    def stop(self):
        zavai.info("GPX trace ended")
        gpx = self.registry.resource("gpx")
        gpx.disconnect("gpx", self)
        self.recorder.stop()
        gpx.del_activity_monitor(self.on_gpx_activity_changed)

    def on_gpx_activity_changed(self, gpx, state):
        if state:
            self.recorder.start(gpx.basename + ".wav")
        else:
            self.recorder.stop()

def init(conf = None, registry = None, **kw):
    registry.register(GPXTracer(registry))
    registry.register(GPXAudioTracer(registry))
    registry.register(GPXWaypoint(registry))