Right now search,filters, etc might block interface if nothing is found within reasonable time
Which is not big issue with small files(i.e <~100mb) but not so fun when making a typo in multi-GB file
General idea for solving the problem:
every action should have own cancellable context, every function called from event loop should expect (and best effort to respect) context
EventPoll overlay, which will gather all events and process one by one. In case some action already being processed - allow to flush all pending events(by throwing out keys, doing zero-job on interrupt requests(so interrupt-callers will be released)) when control sequence received (probably ctrl+c)
Add "Searching...press ctrl+c to stop" to infobar during explicit search/filter and implicit search/filter(i.e page down, which may cause additional big scan (i.e one page of HITs page down that leads to 1GB of misses). Implicit-search notice should appear with delay, to avoid flash-ing
Right now search,filters, etc might block interface if nothing is found within reasonable time
Which is not big issue with small files(i.e <~100mb) but not so fun when making a typo in multi-GB file
General idea for solving the problem: