一个完整简洁的flash日期选择器源码

May

RIA技术：ActionScript3(AS3) 2009-5-25 6:46:29

一个完整简洁的flash日期选择器-calender

package {
import flash.display.*;
import flash.events.MouseEvent;
import flash.text.TextField;
import flash.filters.GlowFilter;
import flash.geom.ColorTransform;
/*
* 一个完整简洁的flash日期选择器，性能稳定，内存消耗很低。
* 作者：Michael 欢迎光临我的空间，交流指点。http://hi.baidu.com/wwwanq/
*/
public class Calendar extends Sprdite {
private var currentDate = new Date(2000,1,25); // Create currute date object
private var currentYear:uint = currentDate.getFullYear();
private var currentMonth:uint = currentDate.getMonth();
private var itemArray:Array = new Array();
private var container:Sprite; // Create a container to layout item of date
private var monthdaysOlympicArray = new Array(31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
private var monthdaysNormalArray = new Array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);

/* Constructor */
public function Calendar() {
builtCalendar();
bPrevMonth.addEventListener(MouseEvent.MOUSE_DOWN,prevMonth);
bNextMonth.addEventListener(MouseEvent.MOUSE_DOWN,nextMonth);
bPrevYear.addEventListener(MouseEvent.MOUSE_DOWN,prevYear);
bNextYear.addEventListener(MouseEvent.MOUSE_DOWN,nextYear);
}

/* Calculate week number for first day of month */
private function getWeekNum(month:uint, year:uint):uint {
var tmpDate:Date = new Date(year, month, 1);
return (tmpDate.getDay());
}
private function daysMonth(month:uint, year:uint):uint {
if ((year%4==0 && year%100!=0) || year%400==0) { // Divisible 4 but can not divisible 100,and divisible 400;
return (monthdaysOlympicArray[month]);
} else {
return (monthdaysNormalArray[month]);
}
}

/* Display date */
private function builtCalendar():void {
var posY:uint;
var posX:uint;
var gapX:uint = 30;
var gapY:uint = 24;

container = new Sprite();
container.x = 35;
container.y = 80;
addChild(container);

for (var i:uint=1 ; i <= 42; i++) {
itemArray = new DateItem();
itemArray.x = posX;
itemArray.y = posY;
if (posX < gapX*6) {
posX += gapX;
} else {
posX = 0;
posY += gapY;
}
container.addChild(itemArray);
itemArray.addEventListener(MouseEvent.CLICK, onItemClick);
}
updateDisplay();
}

/* Clear all date item text content */
private function clearItemText():void {
for (var j:uint=1; j<=42; j++) {
if (itemArray[j].txt.text != "") {
itemArray[j].txt.text = "";
}
}
}

/* Update to display date item text content */
private function updateDisplay():void {
var totalDay:uint = daysMonth(currentMonth, currentYear);
var startDay:uint = getWeekNum(currentMonth, currentYear);
clearItemText();
for (var i:uint=1; i<=totalDay; i++) {
itemArray[i+startDay].txt.text = String(i)
}
displayText.text = currentYear + " - " + uint(currentMonth + 1);
}

/* Data item click handler */
private function onItemClick(e:MouseEvent):void {
if (e.currentTarget.txt.text!="") {
var tmpDate:Date = new Date(currentYear, (currentMonth), e.currentTarget.txt.text);
trace(tmpDate.getFullYear(), tmpDate.getMonth()+1, tmpDate.getDate());
//dispatchEvent(new CustomEvent("item_click", tmpDate));// Dispatch a event and pass parameter of date object
}
}

private function prevMonth(e:MouseEvent):void {
if (currentMonth == 0) {
currentMonth = 11;
currentYear--;
} else {
currentMonth--;
}
updateDisplay();
}
private function nextMonth(e:MouseEvent):void {
if (currentMonth == 11) {
currentMonth = 0;
currentYear++;
} else {
currentMonth++;
}
updateDisplay();
}
private function prevYear(e:MouseEvent):void {
currentYear--;
updateDisplay();
}
private function nextYear(e:MouseEvent):void {
currentYear++;
updateDisplay();
}
}
}

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