We have a requirement to perform few operations on the asset metadata when move/delete action is triggered in touch UI. To achieve these, we will have to overlay a few OOTB JS functions and have them call a custom servlet on the move/delete action.
Based on my initial assessment.
For asset move action, there is a need to tweak the below JS. (Not 100% sure.) /libs/dam/gui/coral/components/admin/moveassetwizard/clientlibs/js/wizard.js
I didn't find any exact JS in the JCR for the asset delete action.