Problems referencing singleton across frames

[Roy Ivar Moe]

Hey,

I'm having difficulties getting a reference to a singleton across frames.

My singleton has this form:

  
 
var singleton = function()
{
    // My private vars
    var foo = "foo";
 
    return 
    {
       // My public functions here
       myFunc: function()
       {
          // ....
       } 
    };
}();
 

I know how to reference vars, functions and objects across frames, but I just can't seem to get a reference to this singleton.

I'm trying to access the singleton (in lets say myFrame) from a function which is imported into the frameset file, and then trying to do something like:

  
 
self.frames.myFrame.singleton.myFunc();
 

Are there any issues with using this singleton pattern across frames?

Regards,
Roy
[ February 17, 2007: Message edited by: Roy Ivar Moe ]

[Eric Pascarello]

I do not see that code above actually running. Does it in the local frame?

Eric

[Roy Ivar Moe]

Hi Eric,

Yes this runs in the local frame.

Here's a quick test if you want to try and run it.
(Note the / in o/nload, in order to post this.)

Hmmm... I don't see why this object would differ from any other object when trying to access it across frames.

  
 
var singleton = function()
{
var privateVar = 25;

function privateFunc(newVal)
{
privateVar = newVal; 
}

return {
firstFunc: function()
{
console.log("privateVar = " + privateVar);
},

secondFunc: function()
{
console.log("Hello from secondFunc");
},

setPrivateVar: function(newVal)
{
privateFunc(newVal);
}
};
}();
 
function init()
{
  console.info("Getting privateVar through the singleton (value should be 'undefined'): ");
 
  console.log(singleton.privateVar);

  console.info("Trying to call privateFunc through the singleton (this   shouldn't work):");

  try
  {
    singleton.privateFunc();
  }
  catch(e)
  {
    console.log(e);
  }

  console.info("Calling firstFunc through the singleton:");
  singleton.firstFunc();

  console.info("Calling secondFunc through the singleton:");
  singleton.secondFunc();
}
 
window.o/nload = init;
 

Regards,
Roy
[ February 17, 2007: Message edited by: Roy Ivar Moe ]