--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/nabble/view/web/template/CalendarWidget.jtp	Thu Mar 21 19:15:52 2019 -0600
@@ -0,0 +1,159 @@
+<%
+package nabble.view.web.template;
+
+import nabble.naml.compiler.IPrintWriter;
+import nabble.naml.compiler.Interpreter;
+import nabble.naml.compiler.CommandSpec;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+import nabble.naml.compiler.PrintWriter;
+import java.util.Calendar;
+import java.util.GregorianCalendar;
+
+
+final class CalendarWidget {
+
+	public static final CommandSpec _calendar = new CommandSpec.Builder()
+		.parameters("date_time","months","week_days","min_year")
+		.build()
+	;
+
+	public static void _calendar(IPrintWriter out,Interpreter interp) {
+		String dateTime = interp.getArgString("date_time");
+		String months = interp.getArgString("months");
+		String weekDays = interp.getArgString("week_days");
+		String minYear = interp.getArgString("min_year");
+		Calendar cal = Calendar.getInstance();
+		cal.setLenient(false);
+		cal.setTimeInMillis(Long.valueOf(dateTime));
+		printCalendar(cal, Integer.valueOf(minYear), months, weekDays, out.getPrintWriter());
+	}
+
+	private static void printCalendar(Calendar cal, int minYear, String months, String weekDays, PrintWriter out) {
+		int day = cal.get(Calendar.DAY_OF_MONTH);
+		String[] monthsArray = months.split("\\|");
+		int month = cal.get(Calendar.MONTH);
+		int year = cal.get(Calendar.YEAR);
+		int currentYear = Calendar.getInstance().get(Calendar.YEAR);
+		%>
+		<script type="text/javascript">
+			function NabbleCalendar(d,m,y) {
+				this.day = d;
+				this.month = m;
+				this.year = y;
+			};
+			NabbleCalendar.prototype.setDay = function(d) {
+				this.day = parseInt(d);
+			};
+			NabbleCalendar.prototype.getDay = function() {
+				return this.day;
+			};
+			NabbleCalendar.prototype.getMonth = function() {
+				return this.month;
+			};
+			NabbleCalendar.prototype.getYear = function() {
+				return this.year;
+			};
+			NabbleCalendar.prototype.updateCalendar = function() {
+				var $m = $('#month');
+				var $y = $('#year');
+				this.month = parseInt($m.val());
+				this.year = parseInt($y.val());
+				$m.attr('disabled','y');
+				$y.attr('disabled','y');
+				$.get('/template/CalendarWidget$Update.jtp?day='+this.day+'&month='+this.month+'&year='+this.year+'&weekdays=<%=weekDays%>', function(data) {
+					$('#calendar-wrapper').html(data);
+					$m.removeAttr('disabled');
+					$y.removeAttr('disabled');
+					Nabble.addEventHandlers();
+				});
+			};
+			var nabbleCalendar = new NabbleCalendar(<%=day%>, <%=month%>, <%=year%>);
+			Nabble.addEventHandlers = function() {
+				$('#calendar-wrapper td.day').css('cursor','pointer').click(function(){
+					$('#day'+nabbleCalendar.day).removeClass('current');
+					var day = $(this).html();
+					nabbleCalendar.setDay(day);
+					$(this).addClass('current');
+				});
+			};
+			$(document).ready(function() {
+				Nabble.addEventHandlers();
+			});
+		</script>
+		<select id="month" onchange="nabbleCalendar.updateCalendar()">
+			<% for (int m = 0;m < 12; m++) { %>
+			<option value="<%=m%>" <%=month == m? "selected" : ""%>><%=monthsArray[m]%></option>
+			<% } %>
+		</select>
+		<select id="year" onchange="nabbleCalendar.updateCalendar()">
+			<% for (int y = minYear;y <= currentYear; y++) { %>
+			<option value="<%=y%>" <%=year == y? "selected" : ""%>><%=y%></option>
+			<% } %>
+		</select>
+		<div id="calendar-wrapper">
+			<% printCalendarTable(cal, weekDays, out); %>
+		</div>
+		<%
+	}
+
+	private static void printCalendarTable(Calendar cal, String weekDays, PrintWriter out) {
+		String[] weekDaysArray = weekDays.split("\\|");
+		int day = cal.get(Calendar.DAY_OF_MONTH);
+		int nDays = cal.getActualMaximum(Calendar.DAY_OF_MONTH);
+		cal.set(Calendar.DAY_OF_MONTH, 1);
+		int firstDay = cal.get(Calendar.DAY_OF_WEEK);
+		int i;
+		%>
+		<table class="calendar">
+			<tr>
+				<td class="week-header"><%=weekDaysArray[0]%></td>
+				<td class="week-header"><%=weekDaysArray[1]%></td>
+				<td class="week-header"><%=weekDaysArray[2]%></td>
+				<td class="week-header"><%=weekDaysArray[3]%></td>
+				<td class="week-header"><%=weekDaysArray[4]%></td>
+				<td class="week-header"><%=weekDaysArray[5]%></td>
+				<td class="week-header"><%=weekDaysArray[6]%></td>
+			</tr>
+			<tr>
+				<% for (i = 1; i < firstDay; i++) {%>
+					<td class="empty"></td>
+				<% } %>
+				<% int d = 1; %>
+				<% for (i = firstDay; i <= 7; i++) printDay(d++, day, out); %>
+			</tr>
+			<% while (d <= nDays) { %>
+				<% int nextStop = d + 7; %>
+				<tr>
+					<% while (d < nextStop && d <= nDays) printDay(d++, day, out); %>
+				</tr>
+			<% } %>
+		</table>
+		<%
+	}
+
+	private static void printDay(int day, int currentDay, PrintWriter out) {
+		%><td id="day<%=day%>" class="day<%=day == currentDay?" current":""%>"><%=day%></td><%
+	}
+
+	public static class Update extends HttpServlet {
+
+		protected void service(HttpServletRequest request, HttpServletResponse response)
+				throws ServletException, IOException
+		{
+			PrintWriter out = new PrintWriter(response.getWriter());
+			String weekDays = request.getParameter("weekdays");
+			String day = request.getParameter("day");
+			String month = request.getParameter("month");
+			String year = request.getParameter("year");
+			Calendar cal = new GregorianCalendar(Integer.valueOf(year), Integer.valueOf(month), Integer.valueOf(day));
+			printCalendarTable(cal, weekDays, out);
+		}
+
+	}
+}
+%>
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