from bigtext import BigText


class FilterViewSyncer:

    def __init__(self, sync_view: BigText):
        self._matches = {}
        self._sync_view = sync_view

    def click_listener(self, byte_offset: int):
        source_byte_offset = self._matches[byte_offset] if byte_offset in self._matches else None
        # print("click %d -> %d (total hits %d)" % (byte_offset, source_byte_offset, len(self._matches)))
        if source_byte_offset is not None:
            self._sync_view.scroll_to_byte(source_byte_offset)

    def match_found(self, match_byte_offset: int, source_byte_offset: int):
        # print("match %d" % match_byte_offset)
        if match_byte_offset >= 0:
            self._matches[match_byte_offset] = source_byte_offset
        else:
            self._matches = {}