Is there a way to cancel a drop event before the component is added to the canvas?

[mercymantis]

I want to be able to cancel a component drop either initiated by dragging a block or moving a component within the canvas. I tried hooking into 'canvas:dragend' and 'sorter:drag:end'

With canvas:dragend, the event doesn't fire

With sorter:drag:end, the event fires but I don't know how to cancel or nullify the modelToDrop

What I'm trying to archive is cancelling a drop based on x conditions. So when a user starts dragging a component, if x conditions are met then cancel the drop action before anything is added to canvas. I'm not able to use component:drag:end because at that point the component is already on the canvas.