#!/usr/bin/env python3

"""Change mouse script

Whenever a mouse is changed to the system, this script will be executed. These
are the rules:
    + All regular mouses should connect to the "Virtual core pointer" of the
      system
    + Touchpanel should be connected to the master "touch-pointer"

NOTE: if master `touch` is not present in the system, the script will create a
      master `touch` itself and hides the pointer. eGalax device input will be
      attached to this master. TODO: make master's cursor invisible.
      
      Currently we'll use xinput command-line application, but, It is possible
      to write a specified c program that uses Xlib efficiently.
      
    Steps:
        + List all pointer as we don't know what pointer is added to the system
        + group them by their usage by name rules (As if the pointer is eGalax
          touch pointer it should be attached to the touch-pointer o.w. it
          should be attached to Vitual core pointer (OR trackball TODO))

    utility functions to find and group pointers aer available in xutil module.

NOTE: In case of psyco adds and removes mouses with intervals smaller than run
    time of this code (which is not probabale at all) a lockfile is used so that
    only one instance of this code is running at a moment so no conflicts occur.
"""

import util.pointer as putil
import util.x as xutil

if __name__ == "__main__":
    """Configure Pointers

    Execution time: 140ms avg -> Tolarable
    """
    v_core, touch_master, e_galax, pointers = putil.get_pointers_categorized()
    if e_galax:
        xutil.reattach(e_galax.id, touch_master.id)
    else:
        # TODO: disable touch?
        pass
    for p in pointers:
        xutil.reattach(p.id, v_core.id)