#
# Gramps - a GTK+/GNOME based genealogy program
#
# Copyright (C) 2000-2007  Donald N. Allingham
# Copyright (C) 2010       Jakim Friant
#
# 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.
#

#-------------------------------------------------------------------------
#
# Python modules
#
#-------------------------------------------------------------------------

#-------------------------------------------------------------------------
#
# Gramps modules
#
#-------------------------------------------------------------------------
from ..docgen import PaperSize
from ...const import PAPERSIZE

#-------------------------------------------------------------------------
#
# Try to abstract SAX1 from SAX2
#
#-------------------------------------------------------------------------
from xml.sax import make_parser, handler, SAXParseException

#-------------------------------------------------------------------------
#
# Constants
#
#-------------------------------------------------------------------------
paper_sizes = []

#-------------------------------------------------------------------------
#
# PageSizeParser
#
#-------------------------------------------------------------------------
class PageSizeParser(handler.ContentHandler):
    """Parses the XML file and builds the list of page sizes"""

    def __init__(self, paper_list):
        handler.ContentHandler.__init__(self)
        self.paper_list = paper_list
        self.locator = None

    def setDocumentLocator(self, locator):
        self.locator = locator

    def startElement(self, tag, attrs):
        if tag == "page":
            name = attrs['name']
            height = float(attrs['height'])
            width = float(attrs['width'])
            self.paper_list.append(PaperSize(name, height, width))

#-------------------------------------------------------------------------
#
# Parse XML file. If it fails, use the default
#
#-------------------------------------------------------------------------
try:
    parser = make_parser()
    parser.setContentHandler(PageSizeParser(paper_sizes))
    with open(PAPERSIZE) as the_file:
        parser.parse(the_file)
    paper_sizes.append(PaperSize("Custom Size", -1, -1)) # always in English
except (IOError, OSError, SAXParseException):
    paper_sizes = [
        PaperSize("Letter",27.94,21.59),
        PaperSize("Legal",35.56,21.59),
        PaperSize("A0",118.9,84.1),
        PaperSize("A1",84.1,59.4),
        PaperSize("A2",59.4,42.0),
        PaperSize("A3",42.0,29.7),
        PaperSize("A4",29.7,21.0),
        PaperSize("A5",21.0,14.8),
        PaperSize("B0",141.4,100.0),
        PaperSize("B1",100.0,70.7),
        PaperSize("B2",70.7,50.0),
        PaperSize("B3",50.0,35.3),
        PaperSize("B4",35.3,25.0),
        PaperSize("B5",25.0,17.6),
        PaperSize("B6",17.6,12.5),
        PaperSize("B",43.18,27.94),
        PaperSize("C",55.88,43.18),
        PaperSize("D",86.36, 55.88),
        PaperSize("E",111.76,86.36),
        PaperSize("Custom Size",-1,-1) # always in English
    ]
