Combobox visible depending on the selection in a previous combobox

Question

I've 5 Combo Box
please help me to find a way to resolve my problem :
i want that when I select in the first combobox, the second one becomes visible and the first one becomes invisible, and when i select in the second one, the third one becomes visible and the second invisible ...........etc
the code :
1st combobox :
search_motif.prompt = "Select Motif";
var xmlLoader:URLLoader = new URLLoader();
var xmlData:XML = new XML();
var xmlAry:Array = new Array();
xmlLoader.addEventListener(Event.COMPLETE, LoadXML);
xmlLoader.load(new URLRequest("motif.xml"));
function LoadXML(e:Event):void {
    xmlData = new XML(e.target.data);
    trace(xmlData..motifName.length());
    for(var i:uint=0;i<xmlData..motifName.length();i++)
        xmlAry.push(xmlData..motifName[i]);
        search_motif.addItem( { label: xmlAry[i], data:xmlAry[i] } );
2nd combobox :
search_age.prompt = "Select age";
var xml2Loader:URLLoader = new URLLoader();
var xml2Data:XML = new XML();
var xml2Ary:Array = new Array();
xml2Loader.addEventListener(Event.COMPLETE, LoadXML2);
xml2Loader.load(new URLRequest("age.xml"));
function LoadXML2(e:Event):void {
    xml2Data = new XML(e.target.data);
    trace(xml2Data..ageName.length());
    for(var j:uint=0;j<xml2Data..ageName.length();j++)    {
        xml2Ary.push(xml2Data..ageName[j]);
        search_motif.addItem( { label: xmlAry[j], data:xmlAry[j] } );
and 3rd combobox, 4th combobox .....................

Answer 1

import fl.data.DataProvider;
    import flash.display.MovieClip;
import flash.events.Event;
import fl.events.ComponentEvent;
import fl.controls.ComboBox;
var allUserbase:Array = [];// contains all dgtc like in xml
var currentUserbase:Array = [];// contains dgtc that need to be displayed
var _loader:URLLoader = new URLLoader();
var _data:XML = new XML();
_loader.addEventListener(Event.COMPLETE, readXML);
_loader.load(new URLRequest("userbase.xml"));
function readXML(event:Event):void
_data = new XML(event.target.data);
for each (var usr in _data.user)
allUserbase.push({grv: usr.@grv, dgtc: usr.@dgtc, age: usr.@age, motif: usr.@motif, motif2: usr.@motif2, motif3: usr.@motif3, motif4: usr.@motif4, motif5: usr.@motif5, motif6: usr.@motif6, motif7: usr.@motif7, motif8: usr.@motif8, motif9: usr.@motif9, motif10: usr.@motif10, exneuro: usr.@exneuro, expleuro: usr.@expleuro, excardio: usr.@excardio ,exabdo: usr.@exabdo, pl: usr.@pl});
currentUserbase = allUserbase.concat();
updateList();
function updateList():void
userList.dataProvider = new DataProvider ();
for (var i:int = 0; i<currentUserbase.length; i++)
userList.addItem({label:currentUserbase[i].dgtc, data: currentUserbase[i].id});
// Combobox age:
search_age.prompt = "Select age";
var xml2Loader:URLLoader = new URLLoader();
var xml2Data:XML = new XML();
var xml2Ary:Array = new Array();
xml2Loader.addEventListener(Event.COMPLETE, LoadXML2);
xml2Loader.load(new URLRequest("age.xml"));
function LoadXML2(e:Event):void {
    xml2Data = new XML(e.target.data);
    trace(xml2Data..ageName.length());
    for(var j:uint=0;j<xml2Data..ageName.length();j++)    {
        xml2Ary.push(xml2Data..ageName[j]);
        search_motif.addItem( { label: xmlAry[j], data:xmlAry[j] } );
// Combobox motif:
search_motif.prompt = "Select Motif";
var xmlLoader:URLLoader = new URLLoader();
var xmlData:XML = new XML();
var xmlAry:Array = new Array();
xmlLoader.addEventListener(Event.COMPLETE, LoadXML);
xmlLoader.load(new URLRequest("motif.xml"));
function LoadXML(e:Event):void {
    xmlData = new XML(e.target.data);
    trace(xmlData..motifName.length());
    for(var i:uint=0;i<xmlData..motifName.length();i++)
        xmlAry.push(xmlData..motifName[i]);
        search_motif.addItem( { label: xmlAry[i], data:xmlAry[i] } );
// Combobox exneuro:
search_exneuro.prompt = "Examen neurologique";
var xml3Loader:URLLoader = new URLLoader();
var xml3Data:XML = new XML();
var xml3Ary:Array = new Array();
xml3Loader.addEventListener(Event.COMPLETE, LoadXML3);
xml3Loader.load(new URLRequest("exneuro.xml"));
function LoadXML3(n:Event):void {
    xml3Data = new XML(n.target.data);
    trace(xml3Data..exneuroName.length());
    for(var d:uint=0;d<xml3Data..exneuroName.length();d++)
        xml3Ary.push(xml3Data..exneuroName[d]);
        search_exneuro.addItem( { label: xml3Ary[d], data:xml3Ary[d] } );
search_motif.visible=false;
search_exneuro.visible=false;
search_expleuro.visible=false;
search_excardio.visible=false;
search_age.addEventListener(Event.CHANGE,ageChangeF);
search_motif.addEventListener(Event.CHANGE,motifChangeF);
search_exneuro.addEventListener(Event.CHANGE,exneuroChangeF);
search_expleuro.addEventListener(Event.CHANGE,expleuroChangeF);
search_excardio.addEventListener(Event.CHANGE,excardioChangeF);
function ageChangeF(e:Event):void{
search_age.visible=false;
search_motif.visible=true;
function motifChangeF(e:Event):void{
search_motif.visible=false;
search_exneuro.visible=true;
search_expleuro.dataProvider = new DataProvider([{label:"RAS",data:"RAS"},{label:"Male",data:"Male"},{label:"Female",data:"F emale"}]);
search_excardio.dataProvider = new DataProvider([{label:"RAS",data:"RAS"},{label:"Souffle",data:"Souffle"},{label:"Tachycard ie",data:"Tachycardie"}]);
search_exabdo.dataProvider = new DataProvider([{label:"RAS",data:"RAS"},{label:"Hepatomegalie",data:"Hepatomegalie"},{labe l:"Splenomegalie",data:"Splenomegalie"}]);
search_pl.dataProvider = new DataProvider([{label:"RAS",data:"RAS"},{label:"Bacterie",data:"Bacterie"},{label:"Virus", data:"Virus"}]);
bt_search.addEventListener(MouseEvent.CLICK, search);
function search(MouseEvent):void
currentUserbase = [];
for (var n:int = 0; n<allUserbase.length; n++)
if ((allUserbase[n].motif == search_motif.selectedItem.data  || allUserbase[n].motif2 == search_motif.selectedItem.data || allUserbase[n].motif3 == search_motif.selectedItem.data  || allUserbase[n].motif4 == search_motif.selectedItem.data || allUserbase[n].motif5 == search_motif.selectedItem.data || allUserbase[n].motif6 == search_motif.selectedItem.data || allUserbase[n].motif7 == search_motif.selectedItem.data || allUserbase[n].motif8 == search_motif.selectedItem.data || allUserbase[n].motif9 == search_motif.selectedItem.data || allUserbase[n].motif10 == search_motif.selectedItem.data || search_motif.selectedItem.data=="Any") && (allUserbase[n].exneuro == search_exneuro.selectedItem.data || search_exneuro.selectedItem.data=="RAS") && (allUserbase[n].expleuro == search_expleuro.selectedItem.data || search_expleuro.selectedItem.data=="RAS") && (allUserbase[n].age == search_age.selectedItem.data || search_age.selectedItem.data=="Any") && (allUserbase[n].excardio == search_excardio.selectedItem.data || search_excardio.selectedItem.data=="RAS") && (allUserbase[n].exabdo == search_exabdo.selectedItem.data || search_exabdo.selectedItem.data=="RAS") && (allUserbase[n].pl == search_pl.selectedItem.data || search_pl.selectedItem.data=="RAS"))
currentUserbase.push(allUserbase[n]);
updateList();