220 lines
7.6 KiB
Python
220 lines
7.6 KiB
Python
#
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# Gramps - a GTK+/GNOME based genealogy program
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#
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# Copyright (C) 2009 Gerald Britton <gerald.britton@gmail.com>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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# $Id: glade.py 10874 2009-03-03 18:00:00Z gbritton $
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#------------------------------------------------------------------------
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#
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# Glade
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#
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#------------------------------------------------------------------------
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"""
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Glade file operations
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This module exports the Glade class.
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"""
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#------------------------------------------------------------------------
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#
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# Python modules
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#
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#------------------------------------------------------------------------
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import sys
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import os
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import gtk
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#------------------------------------------------------------------------
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#
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# gramps modules
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#
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#------------------------------------------------------------------------
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import const
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#------------------------------------------------------------------------
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#
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# Glade class. Derived from gtk.Builder
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#
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#------------------------------------------------------------------------
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class Glade(gtk.Builder):
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"""
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Glade class: Manage glade files as gtk.Builder objects
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"""
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__slots__ = ['__toplevel', '__filename', '__dirname']
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def __init__(self, filename=None, dirname=None, toplevel=None):
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"""
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Class Constructor: Returns a new instance of the Glade class
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@type filename: string
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@param filename: The name of the glade file to be used. Defaults to None
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@type dirname: string
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@param dirname: The directory to search for the glade file. Defaults to
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None which will cause a search for the file in the default
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directory followed by the directory of the calling module.
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@type toplevel: toplevel
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@param toplevel: The toplevel object to search for in the glade file.
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Defaults to None, which will cause a search for a toplevel
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matching the file name.
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@rtype: object reference
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@return: reference to the newly-created Glade instance
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"""
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gtk.Builder.__init__(self)
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filename_given = filename is not None
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dirname_given = dirname is not None
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# if filename not given, use module name to derive it
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if not filename_given:
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filename = sys._getframe(1).f_code.co_filename
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filename = os.path.basename(filename)
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filename = filename.rpartition('.')[0] + '.glade'
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filename = filename.lstrip('_').lower()
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# if dirname not given, use current directory
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if not dirname_given:
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dirname = sys._getframe(1).f_code.co_filename
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dirname = os.path.dirname(dirname)
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# try to find the glade file
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if filename_given and dirname_given: # both given -- use them
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path = os.path.join(dirname, filename)
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elif filename_given: # try default directory first
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path = os.path.join(const.GLADE_DIR, filename)
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if not os.path.exists(path): # then module directory
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path = os.path.join(dirname, filename)
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elif dirname_given: # dirname given -- use it
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path = os.path.join(dirname, filename)
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# neither filename nor dirname given. Try:
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# 1. derived filename in default directory
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# 2. derived filename in module directory
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else:
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path = os.path.join(const.GLADE_DIR, filename)
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if not os.path.exists(path):
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path = os.path.join(dirname, filename)
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# try to build Gtk objects from glade file. Let exceptions happen
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self.add_from_file(path)
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self.__filename, self.__dirname = os.path.split(path)
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# try to find the toplevel widget
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if toplevel: # toplevel is given
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self.__toplevel = self.get_object(toplevel)
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else: # toplevel not given
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# first, use filename as possible toplevel widget name
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self.__toplevel = self.get_object(filename.rpartition('.')[0])
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# next try lowercase filename as possible widget name
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if not self.__toplevel:
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self.__toplevel = self.get_object(
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filename.rpartition('.')[0].lower())
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if not self.__toplevel:
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# if no match found, search for first toplevel widget
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for obj in self.get_objects():
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if hasattr(obj, 'get_toplevel'):
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self.__toplevel = obj.get_toplevel()
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break
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else:
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self.__toplevel = None
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def __get_filename(self):
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"""
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__get_filename: return filename of glade file
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@rtype: string
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@return: filename of glade file
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"""
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return self.__filename
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filename = property(__get_filename)
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def __get_dirname(self):
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"""
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__get_dirname: return directory where glade file found
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@rtype: string
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@return: directory where glade file found
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"""
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return self.__dirname
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dirname = property(__get_dirname)
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def __get_toplevel(self):
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"""
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__get_toplevel: return toplevel object
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@rtype: object
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@return: toplevel object
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"""
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return self.__toplevel
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def __set_toplevel(self, toplevel):
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"""
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__set_toplevel: set toplevel object
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@type toplevel: string
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@param toplevel: The name of the toplevel object to use
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"""
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self.__toplevel = self.get_object(toplevel)
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toplevel = property(__get_toplevel, __set_toplevel)
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def get_child_object(self, value, toplevel=None):
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"""
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get_child_object: search for a child object, by name, within a given
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toplevel. If no toplevel argument is supplied, use
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the toplevel attribute for this instance
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@type value: string
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@param value: The name of the child object to find
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@type toplevel: string
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@param toplevel: The name of the toplevel object to us
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@rtype: object
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@return: child object
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"""
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if not toplevel:
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toplevel = self.__toplevel
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if not toplevel:
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raise ValueError, "Top level object required"
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if isinstance(toplevel, basestring):
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toplevel = self.get_object(toplevel)
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# Simple Breadth-First Search
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queue = [toplevel]
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while queue:
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obj = queue.pop(0)
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if obj.get_name() == value:
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return obj
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if hasattr(obj, 'get_children'):
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queue += obj.get_children()
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else:
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return None
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