var noScroll = function(e) { e.preventDefault(); }

var MessageBox = (function(){
	// ******************************************
	// ??????F?????
	// ?????@?F???b?Z?[?W?{?b?N?X??????
	// ******************************************
	function Hidden(){
		document.getElementById("screenLock").style.visibility = 'hidden';
		document.getElementById("messageBox").style.visibility = 'hidden';
		document.body.removeEventListener('touchmove', noScroll);
	}
	// ******************************************
	// ??????F?\??
	// ?????@?F???b?Z?[?W?{?b?N?X??\??????
	// ******************************************
	function Show(){
		document.getElementById("screenLock").style.visibility = 'visible';
		document.getElementById("messageBox").style.visibility = 'visible';
		document.body.addEventListener('touchmove', noScroll);
	}
	return {
		// ******************************************
		// ??????F?x??(alert)
		// ?????@?F?x??????b?Z?[?W?{?b?N?X??\??????
		// ******************************************
		Alert: function(msgTitle, msgText, okFunc){
			// ?{?^??????
			document.getElementById("okBtn").style.display = 'inline';
			document.getElementById("yesBtn").style.display = 'none';
			document.getElementById("noBtn").style.display = 'none';

			// ?^?C?g??????
			document.getElementById("messageTitle").innerHTML = repBR(msgTitle);

			// ???b?Z?[?W????
			document.getElementById("messageBody").innerHTML = repBR(msgText);

			// ?\??
			Show();

			// ?????
			document.getElementById("okBtn").onclick = function(){ Hidden(); okFunc(); };
		},
		// ******************************************
		// ??????F?m?F(confirm)
		// ?????@?F?m?F????b?Z?[?W?{?b?N?X??\??????
		// ******************************************
		Confirm: function(msgTitle, msgText, yesFunc, noFunc){
			// ?{?^??????
			document.getElementById("okBtn").style.display = 'none';
			document.getElementById("yesBtn").style.display = 'inline';
			document.getElementById("noBtn").style.display = 'inline';

			// ?^?C?g??????
			document.getElementById("messageTitle").innerHTML = repBR(msgTitle);

			// ???b?Z?[?W????
			document.getElementById("messageBody").innerHTML = repBR(msgText);

			// ?\??
			Show();

			// ?uYES?v?{?^??
			document.getElementById("yesBtn").onclick = function(){ Hidden(); yesFunc(); };
			// ?uNO?v?{?^??
			document.getElementById("noBtn").onclick = function(){ Hidden(); noFunc(); };
		}
	}
})();


function alertOK(title, txt, func1){
	if (func1 == '') {
		func1 = function(){return false;};
	}
	MessageBox.Alert(title, txt, func1);
}
function alertYESNO(title, txt, func1, func2){
	if (func1 == '') {
		func1 = function(){return false;};
	}
	if (func2 == '') {
		func2 = function(){return false;};
	}
	MessageBox.Confirm(
		title,
		txt,
		function(){func1()},
		function(){func2()}
	);
}

function repBR(target) {
	var retStr = target;
	while(0 <= retStr.indexOf("\n")) {
		retStr = retStr.replace("\n", "<br>");
	}
	return retStr;
}