Navigation Wizard waypoint relative rather than absolute?

Question

Is there a reason why Wizard.onNavigateTo only checks agains the immediate parent waypoint? This limits the wizard from working across multiple waypoint levels and doesn't work with nested waypoints.
1. Create a wizard with a waypoint called foo.bar containing several children
e.g.
<wizard:Wizard id="myWizard" waypoint="foo.bar">
        <mx:Array>
            <mx:String>foo.bar.step1</mx:String>
            <mx:String>foo.bar.step2</mx:String>
            <mx:String>foo.bar.step3</mx:String>
        </mx:Array>
</wizard:Wizard>
2. Navigating to a destination within foo.bar using the wizard
e.g. foo.bar.step2
in the wizard onNavigateTo it checks that the wizard waypoint equals "bar" instead of "foo.bar" and doesn't update.
Would it be more flexible to check if the target destination is within the wizard and update the currentDestination accordingly? If the target destination is not within the wizard then perhaps the wizard resets currentDestination to null? A better solution would be to use the wizard's waypoint to determine if the currentDestination is reset when a navigateTo event occurs - if the destination is outside the 'scope' of the wizard waypoint (i.e. not a decendant) then set to null, otherwise leave wizard state as is.
in com.adobe.cairngorm.navigation.wizard.Wizard.as
[MessageHandler(selector="navigateTo")]
        public function onNavigateTo(event:NavigationEvent):void
            var qualifiedWaypoint:String = event.waypoint;
            if(_stages.indexOf(event.destination) > -1)
                currentDestination = event.destination;
                wizardChange();
          else
                var commonAncestor:String = getCommonAncestor(_waypoint, qualifiedWaypoint);
                if(commonAncestor != _waypoint)
                    currentDestination = null;
                    wizardChange();
private function getCommonAncestor(destination1:String, destination2:String):String
            var ancestor:String;
            var first : Array = destination1.split( "." );
            var second : Array = destination2.split( "." );
            var length : int = Math.min( first.length , second.length );
            for ( var i : int ; i < length ; i++ )
                if ( first[ i ] != second[ i ] )
                    break;
            ancestor = first.slice( 0 , i ).join( "." );
            return ancestor;

Answer 1

Is there a reason why Wizard.onNavigateTo only checks agains the immediate parent waypoint? This limits the wizard from working across multiple waypoint levels and doesn't work with nested waypoints.
1. Create a wizard with a waypoint called foo.bar containing several children
e.g.
<wizard:Wizard id="myWizard" waypoint="foo.bar">
        <mx:Array>
            <mx:String>foo.bar.step1</mx:String>
            <mx:String>foo.bar.step2</mx:String>
            <mx:String>foo.bar.step3</mx:String>
        </mx:Array>
</wizard:Wizard>
2. Navigating to a destination within foo.bar using the wizard
e.g. foo.bar.step2
in the wizard onNavigateTo it checks that the wizard waypoint equals "bar" instead of "foo.bar" and doesn't update.
Would it be more flexible to check if the target destination is within the wizard and update the currentDestination accordingly? If the target destination is not within the wizard then perhaps the wizard resets currentDestination to null? A better solution would be to use the wizard's waypoint to determine if the currentDestination is reset when a navigateTo event occurs - if the destination is outside the 'scope' of the wizard waypoint (i.e. not a decendant) then set to null, otherwise leave wizard state as is.
in com.adobe.cairngorm.navigation.wizard.Wizard.as
[MessageHandler(selector="navigateTo")]
        public function onNavigateTo(event:NavigationEvent):void
            var qualifiedWaypoint:String = event.waypoint;
            if(_stages.indexOf(event.destination) > -1)
                currentDestination = event.destination;
                wizardChange();
          else
                var commonAncestor:String = getCommonAncestor(_waypoint, qualifiedWaypoint);
                if(commonAncestor != _waypoint)
                    currentDestination = null;
                    wizardChange();
private function getCommonAncestor(destination1:String, destination2:String):String
            var ancestor:String;
            var first : Array = destination1.split( "." );
            var second : Array = destination2.split( "." );
            var length : int = Math.min( first.length , second.length );
            for ( var i : int ; i < length ; i++ )
                if ( first[ i ] != second[ i ] )
                    break;
            ancestor = first.slice( 0 , i ).join( "." );
            return ancestor;