MIGXdb - attach a file browser action to the "Add Item" button

Not sure of the possibility of this, but is there a way to override the default action on the "Add Item" button?

I have a grid of just images (image_paths to be specific), and it seems an extra step/window to hit "Add Image" and be shown a MIGX window with a single file TV Type, which spawns a file browser when clicked.

Not critical, but if there is a way to attach the action of spawning the file browser window to the "Add Image" MIGX button, it would cut down a step.