I just stumbled upon such a technique last night as I was having
trouble accessing array collection elements directly since I was
trying to use it like an array.
If you use IViewCursor class and a filter class you can achieve
everything you want . You can see how I did this below. My old code
was easily twice as long and non-working.
Look at the "using data providers and collections" in the flex 3 docs.
protected var valves:ArrayCollection = new ArrayCollection([
{ptype:"exhaust",location:"cylinder 3 (right)", clearance:0.00,
shimsize:000, newshimsize:000 ,newclearance:0.25},
{ptype:"exhaust",location:"cylinder 3 (left)", clearance:0.00,
shimsize:000, newshimsize:000 ,newclearance:0.25},
{ptype:"exhaust",location:"cylinder 4 (right)", clearance:0.00,
shimsize:000, newshimsize:000 ,newclearance:0.25},
{ptype:"exhaust",location:"cylinder 4 (left)", clearance:0.00,
shimsize:000, newshimsize:000 ,newclearance:0.25}]);
private function onBikeChange(event:Event):void{
//used to change bike clearance
//get selected bike
var selected:String = ComboBox(event.target).selectedItem.data;
var inc:Number;
var exc:Number;
var cursor:IViewCursor;
var thedata:Object;
switch (selected){
case "FZR400":
inc = .15;
exc = .25;
break;
case "FZR600":
inc = .15;
exc = .25;
break;
case "FZR1000":
inc = .15;
exc = .25;
break;
}
// get the cursor from the array collection
cursor = valves.createCursor();
while(! cursor.afterLast){
if (cursor.current.ptype == "intake")
cursor.current.newclearance = inc;
if (cursor.current.ptype == "exhaust")
cursor.current.newclearance = exc;
cursor.moveNext();
}
valves.refresh();
}
http://www.logicminds.biz/motorcycles/shimulator.html
