JMP Add-in — Isolating multiple instances with namespaces

SophieCuvillier

Hi JMP Community,

I'm building a JMP add-in that creates windows, stores global variables, and calls functions. Everything works fine with a single instance — but when the user launches the add-in twice, the two instances share the same global scope and variables start conflicting (one window overwrites the other's state).

I initalized my script with Names default to here(1), I have even created my own new space (ns = newspace() ) and put every variables in it but I still do have the conflict. I know about window namespace but I want also to avoid conflict on the variables outside the window

 

// Launch this script twice — second run breaks the first window

strLabel = "Instance A";
counter = 0;

win = New Window( "Test " || strLabel,
    btn = Button Box( "Click me",
        counter++;
        btn << Set button name( strLabel || " clicked " || Char( counter ) || "x" );
    )
);

ih

If every window is independent then I recommend using the window namespace, designed just for this:

Names default to here(1):
//  Functions outside the window are still accessible
rand = function({}, floor(random uniform(10)));

win = New Window("Values",
	show toolbars(0), show menu(0),
	
	// You can put statements above display elements
	window:randomvalue = rand();
	
	v list box(
		text box("Enter a value for this box:"),
		
		// All references to display elements should be in the window namespace
		window:teb = text edit box(""),
		
		// Examples reading and writing values.
		button box("Update random value", window:randomvalue = rand() ),
		button box("Get values from this window",
			window:tb << Set Text(
				"Random value: " || char(window:randomvalue) ||
				"\!NEntered Value: " || (window:teb << Get Text)
			)
		),
		window:tb = text box("")
	)
);

// You can get to this from outside the window, but make sure this namespace is protected too - for example from inside another window.
show(win:randomvalue, win:teb << Get Text);