#!/usr/bin/env python
# -*- coding: utf-8 -*-

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"""
higwidgets/gtkutils.py

   gtk related functions
"""

__all__ = ['gtk_version_major', 'gtk_version_minor', 'gtk_version_release',
           'gtk_constant_name', 'gobject_register']

import gtk
import gobject

# version information
gtk_version_major, gtk_version_minor, gtk_version_release = gtk.gtk_version
assert gtk_version_major == 2


def gtk_constant_name(group, value):
    """
    Returns the (py)GTK+ name of a constant, given its group name
    """
    group_response = {-1: 'gtk.RESPONSE_NONE',
                      -2: 'gtk.RESPONSE_REJECT',
                      -3: 'gtk.RESPONSE_ACCEPT',
                      -4: 'gtk.RESPONSE_DELETE_EVENT',
                      -5: 'gtk.RESPONSE_OK',
                      -6: 'gtk.RESPONSE_CANCEL',
                      -7: 'gtk.RESPONSE_CLOSE',
                      -8: 'gtk.RESPONSE_YES',
                      -9: 'gtk.RESPONSE_NO',
                      -10: 'gtk.RESPONSE_APPLY',
                      -11: 'gtk.RESPONSE_HELP'}

    groups = {'response': group_response}

    return groups.get(group, {}).get(value, 'Error: constant value not found')


def gobject_register(klass):
    """
    Register a given object by calling gobject.type_register.

    Actually gobject.type_register is only called if the pygtk version in use
    is not 2.8 at least.
    """
    if gtk_version_minor < 8:
        gobject.type_register(klass)