Call a function when the active document is closed

Question

Hi friends
I have a portion of my script (at true a specific function) that I´d need to be executed every time the user close the app.activeDocument in Photoshop.
I know there´s a Photoshop script called "Script Event Manager" where we can associate actions and scripts with events (like closing the document). I´d not like to use this script because..as I told...it´s not my entire script to be runned when closing a file..but only a function.
Tried to search in the Script Event Manager for any event called "onClose" () but sure there´s nothing.
How could I insert an event in the body of my own script that calls a function every time user close the active document?
Thank you a lot for the help
Best Regards
Gustavo.

Answer 1

As I said before the close event is really not that useful. In addition to the document already being closed the event descriptor will only have the path to the closed file if it was saved as part of the close event.
But if you want to play around with this to see if it will be helpful to you here is one way. You will need to add the notifer. This only needs to be done once unless it is removed.
app.notifiersEnabled = true;
app.notifiers.add( "Cls ",new File('~/desktop/closeEventHandler.jsx') );
Then for the event handler script, something like this.
try {
    if (arguments.length >= 2) {
    var filePath;
    var desc = arguments[0];
    if( desc.hasKey( stringIDToTypeID('in') ) ) filePath = desc.getPath(stringIDToTypeID('in'));
    if( filePath != undefined ) alert( decodeURI( filePath ) );
} catch (e) {}