The system.models library provides a simple MVC implementation with a collection of Model classes to manage your applications.
Example
var beforeChanged = function( value , model )
{
trace( "before:" + value + " current:" + model.current ) ;
}
var changed = function( value , model )
{
trace( "change:" + value + " current:" + model.current ) ;
}
var cleared = function( model )
{
trace( "clear current:" + model.current ) ;
}
var model = new ChangeModel() ;
model.beforeChanged.connect( beforeChanged ) ;
model.changed.connect( changed ) ;
model.cleared.connect( cleared ) ;
model.current = "hello" ;
model.current = "world" ;
model.current = null ;