// $Id$

var onClickDisabled = [];
var allDay = false;
var observable_startdate = ['enddate'];
var observable_enddate = ['startdate'];

function newwin(url) {
	window.open(url);
}

function focus(element) {
	document.getElementById(element).focus();
}

function show_the_overlay() {
	document.getElementById('display_overlay_holder').style.display = 'block';
}

function hide_the_overlay(referer) {
	document.getElementById('display_overlay_holder').style.display = 'none';
document.location.href=referer;
}

function setCalendar(form, input, cal) {
	var id = document.getElementById(input);
	var theForm = document.getElementById(form);
	
	if (id == null || theForm == null)
		return;
	id.value = cal;
}

function error(msg) {
	alert(msg);
	document.location.href="$referer";
}

function redirect(url) {
	window.location = url;
}

function is_array(obj) {
   return obj && !(obj.propertyIsEnumerable('length')) && 
   typeof obj === 'object' && typeof obj.length === 'number';
}

function getDateString(date, add) {
	var m = (date.getMonth() + 1);
	if (m < 10)
		m = '0' + m;
	var d = (date.getDate() + add);
	if (d < 10)
		d = '0' + d;
	var s = date.getFullYear() + '-' + m + '-' + d;
	return s;
}

function getTimeString(date, end) {
	var m = date.getMinutes();
	var h = 0;
	if (m < 8)
		m = '00';
	else if (m < 23)
		m = '15';
	else if (m < 38)
		m = '30';
	else if (m < 43)
		m = '45';
	else {
		m = '00';
		h = 1;
	}
	var h = date.getHours() + h + end;
	if (h < 10)
		h = '0' + h;
	return  h + m;
}

function stateSwitch(btn, elements, init) {
	if (btn == null || elements == null || ! is_array(elements) || elements.length < 1)
		return;

	var starttime = document.getElementById('starttime');
	var endtime = document.getElementById('endtime');
	var startdate = document.getElementById('startdate');
	var enddate = document.getElementById('enddate');
	allDay = btn.checked;
	for (var i = 0; i < elements.length; i++) {
		var elem = document.getElementById(elements[i]);
		if (btn.checked == true) {
			elem.disabled = true;
			if (elem.onclick) {
				onClickDisabled[elem.id] = elem.onclick;
				elem.onclick = null;
			}
		}
		else {
			var tmp = null;
			if (onClickDisabled[elem.id])
				var tmp = onClickDisabled[elem.id];
			if (tmp) {
				elem.onclick = tmp;
				onClickDisabled[elem.id] = null;
			}
			elem.disabled = false;
		}
	}
	if (! init) {
		if (allDay) {
			starttime.value = '0000';
			endtime.value = '0000';
			var s_date = new Date(startdate.value);
			var e_date = new Date(getDateString(s_date, 1));
			enddate.value = getDateString(e_date, 0);
		}
		else {
			var now = new Date();
			var time = getTimeString(now, 0);
			var s_date = new Date(startdate.value);
			enddate.value = getDateString(s_date, 0);
			starttime.value = time;
			endtime.value = getTimeString(now, 1);
		}
	}
}

function enableAll(elements) {
	if (elements == null || ! is_array(elements) || elements.length < 1)
		return true;

	for (var i = 0; i < elements.length; i++) {
		var elem = document.getElementById(elements[i]);
		elem.disabled = false;
	}
	return true;
}

function dateAlign(hasDate) {
	if (hasDate == null)
		return;
	
	if (hasDate.id == 'startdate')
		elements = observable_startdate;
	else
		elements = observable_enddate;

	for (var i = 0; i < elements.length; i++) {
		var elem = document.getElementById(elements[i]);
		elem.value = hasDate.value;
	}
}