# I didn't check this code, use carefully, beware of errors

import idc
import idaapi
import idautils

def set_breakpoints_on_refs(ea):
    list_of_referencing_functions = ["All"]
    print "In setting bp ..."
    for ref in idautils.DataRefsTo(ea):
        func_name = idaapi.get_func_name(ref)
        if not func_name is None and not func_name in list_of_referencing_functions:
            list_of_referencing_functions.append(func_name)
    print "refrlist done", list_of_referencing_functions
    width = 0
    for r in list_of_referencing_functions:
       if len(r) > width:
           width = len(r)

    ch = idaapi.Choose(list_of_referencing_functions, "Choose a function", 1 )
    ch.width = width
    print "Chooser created"
    res = ch.choose()
    if res > 0:
        print "selected ...",
        chosen = ch.list[res -1]
        print chosen
        set_at_all = False
        if chosen == "All":
            set_at_all = True

        for ref in idautils.DataRefsTo(ea):
            if set_at_all:
                idc.AddBpt(ref)
                continue
            func_name = idaapi.get_func_name(ref)
            if func_name == chosen:
                idc.AddBpt(ref)


def set_breakpoints_on_refs_to_screen_ea():
    print "Started"
    set_breakpoints_on_refs(idc.ScreenEA())

idaapi.add_hotkey("Alt-Y", set_breakpoints_on_refs_to_screen_ea)