fgdata/Nasal/canvas/map/RTE.lcontroller

# See: http://wiki.flightgear.org/MapStructure
# TODO: this layer doesn't make sense to support for AI/MP traffic, because we don't currently have access to flightplan/routing info
# that also applies to other layers like WPT or even navaid layers that handle station tuning based on local radio settings
# 
# Class things:
var name = 'RTE';
var parents = [SymbolLayer.Controller];
var __self__ = caller(0)[0];
SymbolLayer.Controller.add(name, __self__);
SymbolLayer.add(name, {
	parents: [MultiSymbolLayer],
	type: name, # Symbol type
	df_controller: __self__, # controller to use by default -- this one
	df_options: { # default configuration options
		active_node: "/autopilot/route-manager/active",
		current_wp_node: "/autopilot/route-manager/current-wp",
		wp_num: "/autopilot/route-manager/route/num",
	}
});
var new = func(layer) {
	var m = {
		parents: [__self__],
		layer: layer,
		map: layer.map,
		listeners: [],
	};
	layer.searcher._equals = func(l,r) 0; # TODO: create model objects instead?
	append(m.listeners, setlistener(layer.options.active_node, func m.layer.update() ), setlistener(layer.options.wp_num, func m.layer.update() ));
	m.addVisibilityListener();

	return m;
};
var del = func() {
	foreach (var l; me.listeners)
		removelistener(l);
};

var searchCmd = func {
	# FIXME: do we return the current route even if it isn't active?
	printlog(_MP_dbg_lvl, "Running query: ", name);
	var plans = []; # TODO: multiple flightplans?

	# http://wiki.flightgear.org/Nasal_Flightplan
	var fp = flightplan();
	var fpSize = fp.getPlanSize();
	if (!getprop(me.layer.options.active_node)) fpSize = 0;
	var coords = [];
	for (var i=0; i<fpSize; i += 1) {
		var leg = fp.getWP(i);
		coords ~= leg.path();
	}
	append(plans, coords);
	return plans;
};