box-o-sand/PracticingFlex/03f2-code-behind/as_components/ComboBoxCodeBehind.as

106 lines
3.3 KiB
ActionScript

package as_components
{
import mx.containers.HBox;
import mx.controls.ComboBox;
import mx.events.FlexEvent;
import mx.events.ListEvent;
import mx.formatters.DateFormatter;
[Bindable]
public class ComboBoxCodeBehind extends HBox
{
public var months:Array = new Array();
public var dateformatter:DateFormatter = new DateFormatter();
public var selectedIndex:int;
public var days:Array;
public var years:Array = new Array();
public var monthsCB:ComboBox;
public var daysCB:ComboBox;
public var yearsCB:ComboBox;
public var selectedIndexYear:int;
public var selectedIndexMonth:int;
public var selectedIndexDay:int;
public var thisYear:int;
public function ComboBoxCodeBehind()
{
super();
init();
this.addEventListener(FlexEvent.CREATION_COMPLETE, creationCompleteHandler);
}
private function init():void{
var i:int;
var now:Date = new Date();
var currentMonth:int = now.getMonth();
var currentYear:int = now.getFullYear();
var currentDay:int = now.getDate();
thisYear = currentYear;
dateformatter.formatString = "MMMM";
for (i=0; i<12; i++){
now.setMonth(i);
months[i] = dateformatter.format(now);
}
setYears(currentYear);
setDays(currentMonth);
selectedIndexMonth = currentMonth;
selectedIndexYear = years.indexOf(currentYear);
selectedIndexDay = days.indexOf(currentDay);
}
private function creationCompleteHandler(event:FlexEvent):void{
monthsCB.addEventListener(ListEvent.CHANGE,monthsHandler);
yearsCB.addEventListener(ListEvent.CHANGE, yearsHandler);
}
private function setDays(month:int):void{
days = new Array();
var i:int;
if (month == 0 || month == 2 || month == 4 || month == 6 || month == 7 || month == 9 || month == 11){
for(i=1; i<=31; i++)
days.push(i);
}else if (month == 3 || month == 5 || month == 8 || month == 10){
for(i=1; i<=30; i++)
days.push(i);
}else if (month == 1){
if (thisYear % 4 == 0){
for(i=1; i<=29; i++)
days.push(i);
}else{
for(i=1; i<=28; i++)
days.push(i);
}
}
}
private function setYears(year:int):void{
var j:int;
for(j=1950; j<=year; j++){
years.push(j);
}
}
private function monthsHandler(event:ListEvent):void{
setDays(event.currentTarget.selectedIndex);
selectedIndexDay = 0;
}
private function yearsHandler(event:ListEvent):void{
if (monthsCB.selectedIndex == 1){
var selectedDay:int = daysCB.selectedIndex;
thisYear = event.currentTarget.selectedItem as int;
setDays(monthsCB.selectedIndex);
selectedIndexDay = selectedDay;
}
}
}
}