fgdata/Nasal/canvas/map/FLT.lcontroller

# See: http://wiki.flightgear.org/MapStructure
# Class things:
var name = 'FLT';
var parents = [SymbolLayer.Controller];
var __self__ = caller(0)[0];
SymbolLayer.Controller.add(name, __self__);
SymbolLayer.add(name, {
	parents: [MultiSymbolLayer],
	append: func(idx, item, model) {
		while (size(me.list) <= idx) {
			append(me.list, nil);
		} if (me.list[idx] == nil) {
			me.list[idx] = me.add_sym(model);
		}
		append(model, item);
		var pos = me.controller.getpos(item);
		var cmd = me.list[idx].element._last_cmd == -1 ? canvas.Path.VG_MOVE_TO : canvas.Path.VG_LINE_TO;
		me.list[idx].element.addSegmentGeo(cmd, ["N"~pos[0],"E"~pos[1]]);
		#props.dump(me.list[idx].element._node);
	},
	type: name, # Symbol type
	df_controller: __self__, # controller to use by default -- this one
	add_sym: func(model) {
		return Symbol.new(me.type, me.group, me, model);
	},
});
var new = func(layer) {
	var m = {
		parents: [__self__],
		layer: layer,
		listeners: [],
		models: [],
		active_path: 0,
	};
	layer.searcher._equals = func(a,b) a == b;
	m.addVisibilityListener();

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

var searchCmd = func() {
	logprint(_MP_dbg_lvl, "Running query: FLT");
	var hist = aircraft.history();
	var path = hist.pathForHistory(1000);
	logprint(_MP_dbg_lvl, "FLT size: "~size(path));
	while (size(me.models) <= me.active_path) append(me.models, []);
	for (var i=size(me.models[me.active_path]); i<size(path); i+=1)
		me.layer.append(me.active_path, path[i], me.models[me.active_path]);
	# TODO: filter by in_range()?
	#debug.dump(me.models);
	return me.models;
};
var getpos = Symbol.Controller.getpos;