# -*- coding: utf-8 -*-
#!/usr/bin/env python
#
# Gramps - a GTK+/GNOME based genealogy program
#
# Copyright (C) 2000-2007  Donald N. Allingham
# Copyright (C) 2007       Johan Gonqvist <johan.gronqvist@gmail.com>
# Copyright (C) 2007-2009  Gary Burton <gary.burton@zen.co.uk>
# Copyright (C) 2007-2009  Stephane Charette <stephanecharette@gmail.com>
# Copyright (C) 2008-2009  Brian G. Matherly
# Copyright (C) 2008       Jason M. Simanek <jason@bohemianalps.com>
# Copyright (C) 2008-2011  Rob G. Healey <robhealey1@gmail.com>
# Copyright (C) 2010       Doug Blank <doug.blank@gmail.com>
# Copyright (C) 2010       Jakim Friant
# Copyright (C) 2010-      Serge Noiraud
# Copyright (C) 2011       Tim G L Lyons
# Copyright (C) 2013       Benny Malengier
# Copyright (C) 2016       Allen Crider
# Copyright (C) 2018       Paul D.Smith
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#


class LayoutTree:
    """
    Narrative Web Page generator.

    Classe:
        BuchheimTree - A tree suitable for passing to the Bushheim layout
        algorithm
    """
    def __init__(self, handle, *children):
        self.handle = handle
        self.children = []
        if isinstance(children, list):
            children = list(children)
        for parent in children:
            if parent is not None:
                self.children.append(parent)

    def __getitem__(self, key):
        if isinstance(key, (int, slice)):
            return self.children[key]
        if isinstance(key, str):
            for child in self.children:
                if child.node == key:
                    return child
        assert "Key not found"
        return None

    def __iter__(self):
        return self.children.__iter__()

    def __len__(self):
        return len(self.children)
