How can I declare a static public delegate in JS?

Question

I would like to expose a static public delegate in my JS script file. How can I do t$$anonymous$$s?
How do I add handlers to the delegate?

I'd basically want to be able to do the following (C#) but for JS:

public static Action Handler;

void OnEnable()
{
    Handler += Foo;
}

void OnDisable()
{
    Handler -= Foo;
}

void Foo()
{
    // Some interesting code...
}

Answer 1

Best Answer

Answer by Statement · Mar 27, 2011 at 12:01 PM

I have only come up with a workaround. I am still curious to see if there is any easier way of going about.

JSDelegate.js

class JSDelegate { // Can't use List.<T> - Compile error: // BCE0015: Node 'callable()' has not been correctly processed. // private var callbacks : List.<function()> = new List.<function()>(); // So we have to use an ArrayList instead.

 private var callbacks : ArrayList = new ArrayList();

 function Add(callback : function())
 {
     callbacks.Add(callback);
 }

 function Remove(callback : function())
 {
     callbacks.Remove(callback);
 }

 function Invoke()
 {
     for (var callback : function() in callbacks)
         callback();
 }

Example1.js

static var Handler : JSDelegate = new JSDelegate();

function OnEnable() 
{
    Handler.Add(Bar);
}

function OnDisable() 
{
    Handler.Remove(Bar);
}

function Bar()
{
    Debug.Log("Bar called!");
}

Example2.js

function Update()
{
    if (Input.GetKeyDown(KeyCode.E))
        Example1.Handler.Invoke();
}

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How can I declare a static public delegate in JS?

1 Reply

JSDelegate.js

Example1.js

Example2.js

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