Question

I have a dynamic Class and what I would like to do is call a method everytime a property is appended to the class during run-time.

For example:

dynamic class Example
{

    public function Example()
    {
        trace("New instance created");
    }

    public function setter(name:String, value:String):Void
    {
        trace("Property '"+name+"' created with value '"+value+"'");
    }
}

And then from the timeline when I would add a new property to Example:

Example.newProperty = "some value";

I want it to trace:

Property ‘newProperty’ created with value ‘ some value’

I am fully aware that this is capable by using a function to set properties like so:

public function setter(name:String, value:String):Void
{
    this[name] = "some value";
    trace("Property '"+name+"' created with value '"+value+"'");
}

and calling it like so:

Example.setter("newProperty", "some value");

However I want this method to fire automatically when a property is added via the regular .dot operator and not have to call a function explicitly.

Is this possible?

Answer 1

Since it’s AS2, then, yes, your class has to implement __resolve(x) method. I would, however, consider it a very questionable design decision. The function that accepts the key and the value looks much better to me, and, in the end, it’s less code.