[JS] Avoid multiple instantiation of pallets

Hi all

I feel so dumb asking such a stupid question, but I really can't get it to work. I have a simple dialog (a pallet). Thing that is user clicks several times, exits windows script much. I want to check for a former launched palette.

I tried everything such a global variable to change onShow and onClose (isRunning = false), private variables.

Any clue?

#targetengine 'demo'

var myDialog = (function(){
    var w = new Window('palette');
    return{
        show:function(){
            w.show();
        }
    }
})();

myDialog.show();

Option 1: Global Variable

#targetengine 'demo'

var isRunning = false;

var myDialog = (function(){
    var w = new Window('palette');

     w.onShow = function(){ isRunning = true; }

     w.onClose = function(){ isRunning = false; }

    return{
        show:function(){
            if(!isRunning) { w.show(); }
        }
    }
})();

myDialog.show();

Option 2: private variable:

#targetengine 'demo'



var myDialog = (function(){
     var isRunning = false;
    var w = new Window('palette');

     w.onShow = function(){ isRunning = true; }

     w.onClose = function(){ isRunning = false; }

    return{
        show:function(){
            if(!isRunning) { w.show(); }
        }
    }
})();

myDialog.show();

I can't operate if the palette is not executed if already done. I tried to check for existence of point of dialogue as in this page too, but it's not helping: http://kelsocartography.com/scripts/scripts/nvkelso/registrationButtons.jsx

DRM for information. I am sure that it is so obvious.

Loïc

Actually, I guess that's not so strange. You redo your variable to each invocation, so isRunning myDialog is wrong every time. Simply adding a check to see if there is already some myDialog prevents it to run two at once:

#targetengine 'demo'

var myDialog = myDialog || (function(){
     var isRunning = false;
    var w = new Window('palette');

     w.onShow = function(){ isRunning = true; }

     w.onClose = function(){ isRunning = false; }

    return{
        show:function(){
            if(!isRunning) { w.show(); }
        }
    }
})();

myDialog.show();

But, I think that you will have the same problems that I showed in my first post with things does not when you run later in the same session.

Tags: InDesign

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