[javascript FR] app.popUpMenuEx enhancements

[Mathew]

Two enhancements to app.popUpMenuEx would be really helpful:

1. Add an optional parameter to set the menu at a specific coordinates instead of defaulting to the current cursor position (such as if there's a position: [x,y] parameter added to one of the menu items.)
2. This is closely related to viewtopic.php?t=46657
   If app.popUpMenuEx or app.popUpMenu are called when another popup menu is currently active, it appears that the previous one is cancelled, because it disappears, but it stays in the stack. This causes stack overflow if it happens more than 20 times. The feature request is for the previously set popUpMenu to get cancelled and return Null if it gets called again.
   
   Example code:
   Sets up a sequence of popUpMenus at 1/2 second intervals. Usually overflows at 21.

   Code: Select all

   // danger: stack overflower!
   {
   const tests = [];
   
   for (let i = 0; i < 21; i++) {
   	let t = "Test " + i;
   	tests.push(t);
   	app.setTimeOut('{console.println(new Error().stack);let c = app.popUpMenu(...' + JSON.stringify(tests) + '); console.println(c);}', 1+500*i);
   }
   }

[Daniel - PDF-XChange]

Hello, Mathew

Thank you for the suggestions, I have passed this along to the Dev team fore review.

Kind regards,