function HistoryBoard(dataType) {
	if(dataType === RecordBoard.TYPE_SAMPLE) {
		this.printSample();
		return;
	}

	var rankingTextOffsetY = game.world.height / 2 + 105;
	this.historyTexts = new Array();
	for(var i = 0; i < RankingBoard.RANK_COUNT; i++) {
		var posY = rankingTextOffsetY + (i % 10) * 30;
		this.historyTexts[i] = new HistoryText(80, posY);
	}


	this.todayBestRecord = 0;

	this.dbConnectManager = new DBConnectManager();

	setTimeout(
		(function() {
			var today = new Date();
			var date = DateUtil.getYYYYMMDD(today);
			this.dbConnectManager.requestPlayerHistory(
				sessionStorageManager.getMaestroID(),
				date,
				(function(historyRecordManager) {
					if(historyRecordManager.getCount() == 0) {
						console.log("history board - no data");
						return;
					}

					for(var i = 0; i < historyRecordManager.getCount(); i++) {
						var data = historyRecordManager.getAt(i);
						this.printRecord(i, data.date, data.bestRecord);

						if(date == data.date)
							this.todayBestRecord = data.bestRecord;
					}
				}).bind(this)
			);
		}).bind(this),

		RecordBoard.DELAY_UPDATING_RESULT_RECORD_MS
	);
}

HistoryBoard.prototype.calcDate = function(daysBefore) {
	var date = new Date();
	date.setDate(date.getDate() - daysBefore);
	return date;
}


HistoryBoard.prototype.printRecord = function(index, date, bestRecord) {
	this.historyTexts[index].setContents(date, bestRecord);
}

HistoryBoard.prototype.printSample = function() {
	this.printRecord(0, DateUtil.getYYYYMMDD(this.calcDate(2)), 1270);
	this.printRecord(1, DateUtil.getYYYYMMDD(this.calcDate(3)), 1150);
	this.printRecord(2, DateUtil.getYYYYMMDD(this.calcDate(5)), 1080);
	this.printRecord(3, DateUtil.getYYYYMMDD(this.calcDate(7)), 960);
	this.printRecord(4, DateUtil.getYYYYMMDD(this.calcDate(10)), 1020);
	this.printRecord(5, DateUtil.getYYYYMMDD(this.calcDate(15)), 840);
	this.printRecord(6, DateUtil.getYYYYMMDD(this.calcDate(20)), 760);
}

HistoryBoard.prototype.todayBestRecord = function() {
	return this.todayBestRecord;
}