Some examples...

var ArtLayer = function () {}
ArtLayer.prototype.showOpacity = function() {
    alert(this.opacity);
};

File.prototype.readByte = function() {//aka unsigned byte
   return this.read(1).charCodeAt(0);
};

String.prototype.trim = function() {
  return this.replace(/^[\s]+|[\s]+$/g, '');
};

Math.__proto__.randomFromTo = function(from, to){
           return Math.floor(Math.random() * (to - from + 1) + from);
};

You are in the wrong forum then, you should be here...

http://forums.adobe.com/community/photoshop/photoshop_sdk

Paul,

Does the

var ArtLayer = function () {}

trick work with all PS DOM objects?

And how long has this worked? I have a pile of code that needs to be backwards compatible, some to CS2. Extending the PS DOM like this would

be nice and simplify a lot of my code, but I'd probably have give up supporting older versions of PS.

I put in a request for a

$.loadClass("Document");

sort of API that would have made extending the PS DOM a lot easier, but it never was implemented.

I haven't got Photoshop 7 on any machines so can't test that version.

I have it sitting in a VM somewhere but I stopped supporting it a couple of years ago. It's where I learned PS/JS and wrote a lot of early code but I never want to go there again.

Thanks for that X.

By the way this seems to work....

var Document = function() {}
Document.prototype.nameNoExt = function(){
    alert(this.name.replace(/\.[^\.]+$/, ''));
    }
app.activeDocument.nameNoExt();


 

I am not sure what you are asking for?

From the scripting side...

To display information you can use alert, confirm or create your own UI...

alert("There are " + app.documents.length + " document(s) open");
UI_Info();
 
function UI_Info(){
var win = new Window( 'dialog', 'test' ); 
g = win.graphics;
var myBrush = g.newBrush(g.BrushType.SOLID_COLOR, [0.99, 0.99, 0.99, 1]);
g.backgroundColor = myBrush;
win.p1= win.add("panel", undefined, undefined, {borderStyle:"black"}); 
win.g1 = win.p1.add('group');
var Info = "There are " + app.documents.length + " document(s) open";
win.title = win.g1.add('statictext',undefined,Info);
win.title.graphics.font = ScriptUI.newFont("Georgia","BOLDITALIC",22);
win.exit = win.p1.add('button',undefined,'Ok');
win.show()
}

But if you are wanting to display information automatically you would need to look at File - Scripts - Script Events Manager...

So that it would trigger a script/action when a certain event occurs.

This site may be of use to you as there is source code available for some of thier plug-ins...

http://www.telegraphics.com.au/sw/

In that case you need to write your plug-in first.

Examples at the above site.

Once you have written your plug-in then test it and see if can be recorded in an action.

Then you can use scriptListener to do what you want with the resulting code.

Only you can answer your questions.

You need to ask yourself what you are trying to do, no one else can tell you.

If you are only useing a script to display extra information why are you using a plug-in?

If this is a task from a college/school and you do not understand, you need to go back and clarify exactly what they want.