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# Programmer: BlackJack
#
# Copyright 2010 BlackJack
#
# Distributed under the terms of the GPL (GNU Public License)
#
# DrPython 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#DrFileHistory
from __future__ import with_statement
import wx
class DrFileHistory(wx.FileHistory):
"""Subclass of `wx.FileHistory` acting more like a Python sequence.
It has a length, index access and is iterable. Additionally there are
methods to load and save the list of paths.
:bug: `LoadFromFile()` and `SaveToFile()` can't cope with filenames ending
in whitespace or containing newline characters.
"""
def __init__(self, maxFiles, idBase):
wx.FileHistory.__init__(self, maxFiles, idBase)
self.IdBase = idBase
for i in xrange(self.MaxFiles):
wx.RegisterId(self.IdBase + i)
__len__ = wx.FileHistory.GetCount
def __getitem__(self, index):
if not (0 <= index < len(self)):
raise IndexError
return self.GetHistoryFile(index)
def __delitem__(self, index):
if not (0 <= index < len(self)):
raise IndexError
self.RemoveFileFromHistory(index)
def Clear(self):
"""Clears all paths in the history."""
for dummy in xrange(len(self)):
del self[0]
def LoadFromFile(self, filename):
"""Loads the history of paths.
The current items are replaced by the file content.
"""
self.Clear()
with open(filename, 'r') as lines:
for line in lines:
self.AddFileToHistory(line.rstrip())
def SaveToFile(self, filename):
"""Saves the history of paths."""
with open(filename, 'w') as out_file:
out_file.writelines(s + '\n' for s in reversed(self))
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