var Timestamp = Class.create(JSControl, {
	initialize: function($super, element, params){
		$super(element);
		this.controls_ = {"clock": params.clock, "calendar": params.calendar};
		this.button_ = Element.down(this.element, "button.SetCurrent");
		this.time_first_ = this.element.getAttribute("order") == "TD";

		if (this.button_)
			Event.observe(this.button_, "click", function(event){
				this.SetValue(Time.Current());
				this.onchange();
				this.finalize();
			}.bind(this));
		var evtnam = ["WM_INIT", "CHANGE", "FINALIZE", "CLICK"];
		var awnd = AControl.GetParentWindow($(this.ID()));
		if (awnd){
			for (var iii = 0; iii < evtnam.length; ++iii)
				awnd.Subscribe(evtnam[iii], this.onAEVENT, this);
		}else{
			for (var iii = 0; iii < evtnam.length; ++iii)
				SubscribeOnEvent(evtnam[iii], "document", this.onAEVENT, this);
		}
	},

	SetTabOrder: function(tabbase){
		var jscontrols = [];
		if (this.time_first_) jscontrols.push(this.controls_.clock, this.controls_.calendar);
		else jscontrols.push(this.controls_.calendar, this.controls_.clock);
		jscontrols.each(function(jscontrol){
			if (jscontrol && jscontrol.SetTabOrder) tabbase = jscontrol.SetTabOrder(tabbase);
		});
		if (this.button_) this.button_.tabIndex = tabbase++;
		return tabbase;
	},

	finalize: function(){ new AEvent("FINALIZE", {}, this); },

	Value: function(){
		return new Time(this.controls_.calendar.Value(), this.controls_.clock.Value());
	},

	SetValue: function(dt){
		var date=new ADate();
		var time=new ATime();
		if (Object.isUndefined(dt) || dt === null){
			// do nothing
		} else if (dt=="current"){
			date = "today";
			time = "current";
		} else if (dt instanceof Time){
			if (!dt.IsIncorrect()) {
				var offs = typeof(dt.atime.GetTimezoneOffset) == "function" ? dt.atime.GetTimezoneOffset() : 0;
				var ud=new Date(Date.UTC(dt.adate.year, dt.adate.month - 1, dt.adate.day, dt.atime.hh, dt.atime.mm, dt.atime.ss) - offs * 60 * 1000);
				var d=new ADate(ud.getUTCFullYear(), ud.getUTCMonth()+1, ud.getUTCDate());
				var t=new ATime(ud.getUTCHours(), ud.getUTCMinutes(), ud.getUTCSeconds());
				dt=new Time(d,t);
				date=d;
				time=t;
			}
		} else if (["year", "month", "day", "hh", "mm", "ss"].collect(function(key) {
			// TODO: wipe this code, it should not be used
			LogE("Timestamp: should not execute this");
			return !Object.isUndefined(dt[key]); }).all()){
			date = time = dt;
		}
		if (this.controls_.calendar) this.controls_.calendar.SetValue(date);
		if (this.controls_.clock) this.controls_.clock.SetValue(time);
	},

	onAEVENT: function(aevent){
		var emitter = aevent.Emitter();
		if ([this.controls_.clock, this.controls_.calendar].indexOf(emitter) !== -1){
			aevent.Stop();
			if (aevent.Name() === "FINALIZE" &&//
				emitter !== (this.time_first_ ? this.controls_.calendar : this.controls_.clock)) return;
			new AEvent(aevent.Name(), aevent.Data(), this);
		}
	}
});