Calendar.prototype._update = function()

in tapestry-framework/src/org/apache/tapestry/form/DatePicker.js [464:544]
69 lines of code
14 McCabe index (conditional complexity)

Calendar.prototype._update = function() {


	// Calculate the number of days in the month for the selected date
	var date = this._currentDate;
	var today = toISODate(new Date());
	
	
	var selected = "";
	if (this._selectedDate != null) {
		selected = toISODate(this._selectedDate);
	}
	var current = toISODate(this._currentDate);
	var d1 = new Date(date.getFullYear(), date.getMonth(), 1);
	var d2 = new Date(date.getFullYear(), date.getMonth()+1, 1);
	var monthLength = Math.round((d2 - d1) / (24 * 60 * 60 * 1000));
	
	// Find out the weekDay index for the first of this month
	var firstIndex = (d1.getDay() - this._firstDayOfWeek) % 7 ;
    if (firstIndex < 0) {
    	firstIndex += 7;
    }
	
	var index = 0;
	while (index < firstIndex) {
		this._dateSlot[index].value = -1;
		this._dateSlot[index].data.data = String.fromCharCode(160);
		this._dateSlot[index].data.parentNode.className = "";
		this._dateSlot[index].data.parentNode.style.fontWeight = "normal";
		this._dateSlot[index].data.parentNode.style.border= "none";
		index++;
	}
        
    for (i = 1; i <= monthLength; i++, index++) {
		this._dateSlot[index].value = i;
		this._dateSlot[index].data.data = i;
		this._dateSlot[index].data.parentNode.className = "";
		this._dateSlot[index].data.parentNode.style.fontWeight = "normal";
		this._dateSlot[index].data.parentNode.style.border= "none";
		if (toISODate(d1) == today) {
			this._dateSlot[index].data.parentNode.className = "today";
			this._dateSlot[index].data.parentNode.style.fontWeight = "bold";
		}
		if (toISODate(d1) == current) {
			this._dateSlot[index].data.parentNode.className += " current";
			this._dateSlot[index].data.parentNode.style.border= "1px dotted WindowText";
		}
		if (toISODate(d1) == selected) {
			this._dateSlot[index].data.parentNode.className += " selected";
			this._dateSlot[index].data.parentNode.style.border= "1px solid WindowText";
		}
		d1 = new Date(d1.getFullYear(), d1.getMonth(), d1.getDate()+1);
	}
	
	var lastDateIndex = index;
        
    while(index < 42) {
		this._dateSlot[index].value = -1;
		this._dateSlot[index].data.data = String.fromCharCode(160);
		this._dateSlot[index].data.parentNode.className = "";
		this._dateSlot[index].data.parentNode.style.fontWeight = "normal";
		this._dateSlot[index].data.parentNode.style.border= "none";
		++index;
	}
	
	// Week numbers
	if (this._includeWeek) {
		d1 = new Date(date.getFullYear(), date.getMonth(), 1);
		for (i=0; i < 6; ++i) {
			if (i == 5 && lastDateIndex < 36) {
				this._weekSlot[i].data.data = String.fromCharCode(160);
				this._weekSlot[i].data.parentNode.style.borderRight = "none";
			} else {
				week = weekNumber(this, d1);
				this._weekSlot[i].data.data = week;
				this._weekSlot[i].data.parentNode.style.borderRight = "1px solid WindowText";
			}
			d1 = new Date(d1.getFullYear(), d1.getMonth(), d1.getDate()+7);
		}
	}
}