/b-gtk/fix-viz

# Copyright (C) 2006 by Szilveszter Farkas (Phanatic) <szilveszter.farkas@gmail.com>

#

# 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

import ConfigParser

import os

import os.path

import sys

try:

    import pygtk

    pygtk.require("2.0")

except:

    pass

try:

    import gtk

    import gtk.gdk

    import gtk.glade

except:

    sys.exit(1)

from handler import OliveHandler

import bzrlib.errors as errors

# Olive GTK UI version

__version__ = '0.11.0'

class OliveGtk:

    """ The main Olive GTK frontend class. This is called when launching the

    program. """

    def __init__(self):

        # Load the glade file

        if sys.platform == 'win32':

            self.gladefile = os.path.dirname(sys.executable) + "/share/olive/olive.glade"

        else:

            self.gladefile = "/usr/share/olive/olive.glade"

        if not os.path.exists(self.gladefile):

            # Load from current directory if not installed

            self.gladefile = "olive.glade"

            # Check again

            if not os.path.exists(self.gladefile):

                # Fail

                print _('Glade file cannot be found.')

                sys.exit(1)

        self.toplevel = gtk.glade.XML(self.gladefile, 'window_main', 'olive-gtk')

        self.window = self.toplevel.get_widget('window_main')

        self.pref = OlivePreferences()

        self.comm = OliveCommunicator(self.toplevel, self.pref)

        handler = OliveHandler(self.gladefile, self.comm)

        # Dictionary for signal_autoconnect

        dic = { "on_window_main_destroy": gtk.main_quit,

                "on_window_main_delete_event": handler.on_window_main_delete_event,

                "on_quit_activate": handler.on_window_main_delete_event,

                "on_about_activate": handler.on_about_activate,

                "on_menuitem_add_files_activate": handler.on_menuitem_add_files_activate,

                "on_menuitem_remove_file_activate": handler.on_menuitem_remove_file_activate,

                "on_menuitem_file_make_directory_activate": handler.on_menuitem_file_make_directory_activate,

                "on_menuitem_file_move_activate": handler.on_menuitem_file_move_activate,

                "on_menuitem_file_rename_activate": handler.on_menuitem_file_rename_activate,

                "on_menuitem_view_show_hidden_files_activate": handler.on_menuitem_view_show_hidden_files_activate,

                "on_menuitem_view_refresh_activate": handler.on_menuitem_view_refresh_activate,

                "on_menuitem_branch_initialize_activate": handler.on_menuitem_branch_initialize_activate,

                "on_menuitem_branch_get_activate": handler.on_menuitem_branch_get_activate,

                "on_menuitem_branch_checkout_activate": handler.on_menuitem_branch_checkout_activate,

                "on_menuitem_branch_commit_activate": handler.on_menuitem_branch_commit_activate,

                "on_menuitem_branch_push_activate": handler.on_menuitem_branch_push_activate,

                "on_menuitem_branch_pull_activate": handler.on_menuitem_branch_pull_activate,

                "on_menuitem_branch_status_activate": handler.on_menuitem_branch_status_activate,

                "on_menuitem_branch_missing_revisions_activate": handler.on_menuitem_branch_missing_revisions_activate,

                "on_menuitem_stats_diff_activate": handler.on_menuitem_stats_diff_activate,

                "on_menuitem_stats_log_activate": handler.on_menuitem_stats_log_activate,

                "on_menuitem_stats_infos_activate": handler.on_menuitem_stats_infos_activate,

                "on_toolbutton_refresh_clicked": handler.on_menuitem_view_refresh_activate,

                "on_toolbutton_log_clicked": handler.on_menuitem_stats_log_activate,

                #"on_menutoolbutton_diff_clicked": handler.on_menuitem_stats_diff_activate,

                "on_toolbutton_diff_clicked": handler.on_menuitem_stats_diff_activate,

                "on_toolbutton_commit_clicked": handler.on_menuitem_branch_commit_activate,

                "on_toolbutton_pull_clicked": handler.on_menuitem_branch_pull_activate,

                "on_toolbutton_push_clicked": handler.on_menuitem_branch_push_activate,

                "on_treeview_right_button_press_event": handler.on_treeview_right_button_press_event,

                "on_treeview_right_row_activated": handler.on_treeview_right_row_activated,

                "on_treeview_left_button_press_event": handler.on_treeview_left_button_press_event,

                "on_treeview_left_row_activated": handler.on_treeview_left_row_activated }

        # Connect the signals to the handlers

        self.toplevel.signal_autoconnect(dic)

        # Apply window size and position

        width = self.pref.get_preference('window_width', 'int')

        height = self.pref.get_preference('window_height', 'int')

        self.window.resize(width, height)

        x = self.pref.get_preference('window_x', 'int')

        y = self.pref.get_preference('window_y', 'int')

        self.window.move(x, y)

        # Apply paned position

        pos = self.pref.get_preference('paned_position', 'int')

        self.comm.hpaned_main.set_position(pos)

        # Apply menu to the toolbutton

        #menubutton = self.toplevel.get_widget('menutoolbutton_diff')

        #menubutton.set_menu(handler.menu.toolbar_diff)

        # Now we can show the window

        self.window.show()

        # Show drive selector if under Win32

        if sys.platform == 'win32':

            self.comm.vbox_main_right.pack_start(self.comm.combobox_drive, False, True, 0)

            self.comm.vbox_main_right.reorder_child(self.comm.combobox_drive, 0)

            self.comm.combobox_drive.show()

            self.comm.gen_hard_selector()

        # Load default data into the panels

        self.treeview_left = self.toplevel.get_widget('treeview_left')

        self.treeview_right = self.toplevel.get_widget('treeview_right')

        self._load_left()

        self._load_right()

        # Apply menu state

        self.comm.menuitem_view_show_hidden_files.set_active(self.pref.get_preference('dotted_files', 'bool'))

    def _load_left(self):

        """ Load data into the left panel. (Bookmarks) """

        # set cursor to busy

        self.comm.set_busy(self.treeview_left)

        # Create TreeStore

        treestore = gtk.TreeStore(str, str)

        # Get bookmarks

        bookmarks = self.comm.pref.get_bookmarks()

        # Add them to the TreeStore

        titer = treestore.append(None, [_('Bookmarks'), None])

        for item in bookmarks:

            title = self.comm.pref.get_bookmark_title(item)

            treestore.append(titer, [title, item])

        # Create the column and add it to the TreeView

        self.treeview_left.set_model(treestore)

        tvcolumn_bookmark = gtk.TreeViewColumn(_('Bookmark'))

        self.treeview_left.append_column(tvcolumn_bookmark)

        # Set up the cells

        cell = gtk.CellRendererText()

        tvcolumn_bookmark.pack_start(cell, True)

        tvcolumn_bookmark.add_attribute(cell, 'text', 0)

        # Expand the tree

        self.treeview_left.expand_all()

        self.comm.set_busy(self.treeview_left, False)

    def _load_right(self):

        """ Load data into the right panel. (Filelist) """

        from bzrlib.workingtree import WorkingTree

        # set cursor to busy

        self.comm.set_busy(self.treeview_right)

        # Create ListStore

        liststore = gtk.ListStore(str, str, str)

        dirs = ['..']

        files = []

        # Fill the appropriate lists

        path = self.comm.get_path()

        dotted_files = self.pref.get_preference('dotted_files', 'bool')

        for item in os.listdir(path):

            if not dotted_files and item[0] == '.':

                continue

            if os.path.isdir(path + os.sep + item):

                dirs.append(item)

            else:

                files.append(item)

        # Sort'em

        dirs.sort()

        files.sort()

        # Try to open the working tree

        notbranch = False

        try:

            tree1 = WorkingTree.open_containing(path)[0]

        except errors.NotBranchError:

            notbranch = True

        except errors.PermissionDenied:

            print "DEBUG: permission denied."

        if not notbranch:

            branch = tree1.branch

            tree2 = tree1.branch.repository.revision_tree(branch.last_revision())

            delta = tree1.changes_from(tree2, want_unchanged=True)

        # Add'em to the ListStore

        for item in dirs:    

            liststore.append([gtk.STOCK_DIRECTORY, item, ''])

        for item in files:

            status = 'unknown'

            if not notbranch:

                filename = tree1.relpath(path + os.sep + item)

                for rpath, id, kind, text_modified, meta_modified in delta.renamed:

                    if rpath == filename:

                        status = 'renamed'

                for rpath, id, kind in delta.added:

                    if rpath == filename:

                        status = 'added'

                for rpath, id, kind, text_modified, meta_modified in delta.removed:

                    if rpath == filename:

                        status = 'removed'

                for rpath, id, kind, text_modified, meta_modified in delta.modified:

                    if rpath == filename:

                        status = 'modified'

                for rpath, id, kind in delta.unchanged:

                    if rpath == filename:

                        status = 'unchanged'

            #try:

            #    status = fileops.status(path + os.sep + item)

            #except errors.PermissionDenied:

            #    continue

            if status == 'renamed':

                st = _('renamed')

            elif status == 'removed':

                st = _('removed')

            elif status == 'added':

                st = _('added')

            elif status == 'modified':

                st = _('modified')

            elif status == 'unchanged':

                st = _('unchanged')

            else:

                st = _('unknown')

            liststore.append([gtk.STOCK_FILE, item, st])

        # Create the columns and add them to the TreeView

        self.treeview_right.set_model(liststore)

        tvcolumn_filename = gtk.TreeViewColumn(_('Filename'))

        tvcolumn_status = gtk.TreeViewColumn(_('Status'))

        self.treeview_right.append_column(tvcolumn_filename)

        self.treeview_right.append_column(tvcolumn_status)

        # Set up the cells

        cellpb = gtk.CellRendererPixbuf()

        cell = gtk.CellRendererText()

        tvcolumn_filename.pack_start(cellpb, False)

        tvcolumn_filename.pack_start(cell, True)

        tvcolumn_filename.set_attributes(cellpb, stock_id=0)

        tvcolumn_filename.add_attribute(cell, 'text', 1)

        tvcolumn_status.pack_start(cell, True)

        tvcolumn_status.add_attribute(cell, 'text', 2)

        # Check if current directory is a branch

        if not notbranch:

            # Activate some items

            self.comm.menuitem_branch_init.set_sensitive(False)

            self.comm.menuitem_branch_get.set_sensitive(True)

            self.comm.menuitem_branch_checkout.set_sensitive(True)

            self.comm.menuitem_branch_pull.set_sensitive(True)

            self.comm.menuitem_branch_push.set_sensitive(True)

            self.comm.menuitem_branch_commit.set_sensitive(True)

            self.comm.menuitem_branch_status.set_sensitive(True)

            self.comm.menuitem_branch_missing.set_sensitive(True)

            self.comm.menuitem_stats.set_sensitive(True)

            self.comm.menuitem_add_files.set_sensitive(True)

            self.comm.menuitem_remove_files.set_sensitive(True)

            self.comm.menuitem_file_make_directory.set_sensitive(True)

            self.comm.menuitem_file_rename.set_sensitive(True)

            self.comm.menuitem_file_move.set_sensitive(True)

            #self.comm.menutoolbutton_diff.set_sensitive(True)

            self.comm.toolbutton_diff.set_sensitive(True)

            self.comm.toolbutton_log.set_sensitive(True)

            self.comm.toolbutton_commit.set_sensitive(True)

            self.comm.toolbutton_pull.set_sensitive(True)

            self.comm.toolbutton_push.set_sensitive(True)

        else:

            # Deactivate some items

            self.comm.menuitem_branch_init.set_sensitive(True)

            self.comm.menuitem_branch_get.set_sensitive(False)

            self.comm.menuitem_branch_checkout.set_sensitive(False)

            self.comm.menuitem_branch_pull.set_sensitive(False)

            self.comm.menuitem_branch_push.set_sensitive(False)

            self.comm.menuitem_branch_commit.set_sensitive(False)

            self.comm.menuitem_branch_status.set_sensitive(False)

            self.comm.menuitem_branch_missing.set_sensitive(False)

            self.comm.menuitem_stats.set_sensitive(False)

            self.comm.menuitem_add_files.set_sensitive(False)

            self.comm.menuitem_remove_files.set_sensitive(False)

            self.comm.menuitem_file_make_directory.set_sensitive(False)

            self.comm.menuitem_file_rename.set_sensitive(False)

            self.comm.menuitem_file_move.set_sensitive(False)

            #self.comm.menutoolbutton_diff.set_sensitive(False)

            self.comm.toolbutton_diff.set_sensitive(False)

            self.comm.toolbutton_log.set_sensitive(False)

            self.comm.toolbutton_commit.set_sensitive(False)

            self.comm.toolbutton_pull.set_sensitive(False)

            self.comm.toolbutton_push.set_sensitive(False)

        # set cursor to default

        self.comm.set_busy(self.treeview_right, False)

class OliveCommunicator:

    """ This class is responsible for the communication between the different

    modules. """

    def __init__(self, toplevel, pref):

        # Get glade main component

        self.toplevel = toplevel

        # Preferences object

        self.pref = pref

        # Default path

        self._path = os.getcwd()

        # Initialize the statusbar

        self.statusbar = self.toplevel.get_widget('statusbar')

        self.context_id = self.statusbar.get_context_id('olive')

        # Get the main window

        self.window_main = self.toplevel.get_widget('window_main')

        # Get the HPaned

        self.hpaned_main = self.toplevel.get_widget('hpaned_main')

        # Get the TreeViews

        self.treeview_left = self.toplevel.get_widget('treeview_left')

        self.treeview_right = self.toplevel.get_widget('treeview_right')

        # Get some important menu items

        self.menuitem_add_files = self.toplevel.get_widget('menuitem_add_files')

        self.menuitem_remove_files = self.toplevel.get_widget('menuitem_remove_file')

        self.menuitem_file_make_directory = self.toplevel.get_widget('menuitem_file_make_directory')

        self.menuitem_file_rename = self.toplevel.get_widget('menuitem_file_rename')

        self.menuitem_file_move = self.toplevel.get_widget('menuitem_file_move')

        self.menuitem_view_show_hidden_files = self.toplevel.get_widget('menuitem_view_show_hidden_files')

        self.menuitem_branch = self.toplevel.get_widget('menuitem_branch')

        self.menuitem_branch_init = self.toplevel.get_widget('menuitem_branch_initialize')

        self.menuitem_branch_get = self.toplevel.get_widget('menuitem_branch_get')

        self.menuitem_branch_checkout = self.toplevel.get_widget('menuitem_branch_checkout')

        self.menuitem_branch_pull = self.toplevel.get_widget('menuitem_branch_pull')

        self.menuitem_branch_push = self.toplevel.get_widget('menuitem_branch_push')

        self.menuitem_branch_commit = self.toplevel.get_widget('menuitem_branch_commit')

        self.menuitem_branch_status = self.toplevel.get_widget('menuitem_branch_status')

        self.menuitem_branch_missing = self.toplevel.get_widget('menuitem_branch_missing_revisions')

        self.menuitem_stats = self.toplevel.get_widget('menuitem_stats')

        self.menuitem_stats_diff = self.toplevel.get_widget('menuitem_stats_diff')

        self.menuitem_stats_log = self.toplevel.get_widget('menuitem_stats_log')

        # Get some toolbuttons

        #self.menutoolbutton_diff = self.toplevel.get_widget('menutoolbutton_diff')

        self.toolbutton_diff = self.toplevel.get_widget('toolbutton_diff')

        self.toolbutton_log = self.toplevel.get_widget('toolbutton_log')

        self.toolbutton_commit = self.toplevel.get_widget('toolbutton_commit')

        self.toolbutton_pull = self.toplevel.get_widget('toolbutton_pull')

        self.toolbutton_push = self.toplevel.get_widget('toolbutton_push')

        # Get the drive selector

        self.combobox_drive = gtk.combo_box_new_text()

        self.combobox_drive.connect("changed", self._refresh_drives)

        self.vbox_main_right = self.toplevel.get_widget('vbox_main_right')

    def set_path(self, path):

        """ Set the current path while browsing the directories. """

        self._path = path

    def get_path(self):

        """ Get the current path. """

        return self._path

    def get_selected_right(self):

        """ Get the selected filename. """

        treeselection = self.treeview_right.get_selection()

        (model, iter) = treeselection.get_selected()

        if iter is None:

            return None

        else:

            return model.get_value(iter, 1)

    def get_selected_left(self):

        """ Get the selected bookmark. """

        treeselection = self.treeview_left.get_selection()

        (model, iter) = treeselection.get_selected()

        if iter is None:

            return None

        else:

            return model.get_value(iter, 1)

    def set_statusbar(self, message):

        """ Set the statusbar message. """

        self.statusbar.push(self.context_id, message)

    def clear_statusbar(self):

        """ Clean the last message from the statusbar. """

        self.statusbar.pop(self.context_id)

    def refresh_left(self):

        """ Refresh the bookmark list. """

        # set cursor to busy

        self.set_busy(self.treeview_left)

        # Get TreeStore and clear it

        treestore = self.treeview_left.get_model()

        treestore.clear()

        # Get bookmarks

        bookmarks = self.pref.get_bookmarks()

        # Add them to the TreeStore

        titer = treestore.append(None, [_('Bookmarks'), None])

        for item in bookmarks:

            title = self.pref.get_bookmark_title(item)

            treestore.append(titer, [title, item])

        # Add the TreeStore to the TreeView

        self.treeview_left.set_model(treestore)

        # Expand the tree

        self.treeview_left.expand_all()

        self.set_busy(self.treeview_left, False)

    def refresh_right(self, path=None):

        """ Refresh the file list. """

        from bzrlib.workingtree import WorkingTree

        self.set_busy(self.treeview_right)

        if path is None:

            path = self.get_path()

        # A workaround for double-clicking Bookmarks

        if not os.path.exists(path):

            self.set_busy(self.treeview_right, False)

            return

        # Get ListStore and clear it

        liststore = self.treeview_right.get_model()

        liststore.clear()

        dirs = ['..']

        files = []

        # Fill the appropriate lists

        dotted_files = self.pref.get_preference('dotted_files', 'bool')

        for item in os.listdir(path):

            if not dotted_files and item[0] == '.':

                continue

            if os.path.isdir(path + os.sep + item):

                dirs.append(item)

            else:

                files.append(item)

        # Sort'em

        dirs.sort()

        files.sort()

        # Try to open the working tree

        notbranch = False

        try:

            tree1 = WorkingTree.open_containing(path)[0]

        except errors.NotBranchError:

            notbranch = True

        except errors.PermissionDenied:

            print "DEBUG: permission denied."

        if not notbranch:

            branch = tree1.branch

            tree2 = tree1.branch.repository.revision_tree(branch.last_revision())

            delta = tree1.changes_from(tree2, want_unchanged=True)

        # Add'em to the ListStore

        for item in dirs:

            liststore.append([gtk.STOCK_DIRECTORY, item, ''])

        for item in files:

            status = 'unknown'

            if not notbranch:

                filename = tree1.relpath(path + os.sep + item)

                for rpath, id, kind, text_modified, meta_modified in delta.renamed:

                    if rpath == filename:

                        status = 'renamed'

                for rpath, id, kind in delta.added:

                    if rpath == filename:

                        status = 'added'

                for rpath, id, kind, text_modified, meta_modified in delta.removed:

                    if rpath == filename:

                        status = 'removed'

                for rpath, id, kind, text_modified, meta_modified in delta.modified:

                    if rpath == filename:

                        status = 'modified'

                for rpath, id, kind in delta.unchanged:

                    if rpath == filename:

                        status = 'unchanged'

            #try:

            #    status = fileops.status(path + os.sep + item)

            #except errors.PermissionDenied:

            #    continue

            if status == 'renamed':

                st = _('renamed')

            elif status == 'removed':

                st = _('removed')

            elif status == 'added':

                st = _('added')

            elif status == 'modified':

                st = _('modified')

            elif status == 'unchanged':

                st = _('unchanged')

            else:

                st = _('unknown')

            liststore.append([gtk.STOCK_FILE, item, st])

        # Add the ListStore to the TreeView

        self.treeview_right.set_model(liststore)

        # Check if current directory is a branch

        if not notbranch:

            # Activate some items

            self.menuitem_branch_init.set_sensitive(False)

            self.menuitem_branch_get.set_sensitive(True)

            self.menuitem_branch_checkout.set_sensitive(True)

            self.menuitem_branch_pull.set_sensitive(True)

            self.menuitem_branch_push.set_sensitive(True)

            self.menuitem_branch_commit.set_sensitive(True)

            self.menuitem_branch_status.set_sensitive(True)

            self.menuitem_branch_missing.set_sensitive(True)

            self.menuitem_stats.set_sensitive(True)

            self.menuitem_add_files.set_sensitive(True)

            self.menuitem_remove_files.set_sensitive(True)

            self.menuitem_file_make_directory.set_sensitive(True)

            self.menuitem_file_rename.set_sensitive(True)

            self.menuitem_file_move.set_sensitive(True)

            #self.menutoolbutton_diff.set_sensitive(True)

            self.toolbutton_diff.set_sensitive(True)

            self.toolbutton_log.set_sensitive(True)

            self.toolbutton_commit.set_sensitive(True)

            self.toolbutton_pull.set_sensitive(True)

            self.toolbutton_push.set_sensitive(True)

        else:

            # Deactivate some items

            self.menuitem_branch_init.set_sensitive(True)

            self.menuitem_branch_get.set_sensitive(False)

            self.menuitem_branch_checkout.set_sensitive(False)

            self.menuitem_branch_pull.set_sensitive(False)

            self.menuitem_branch_push.set_sensitive(False)

            self.menuitem_branch_commit.set_sensitive(False)

            self.menuitem_branch_status.set_sensitive(False)

            self.menuitem_branch_missing.set_sensitive(False)

            self.menuitem_stats.set_sensitive(False)

            self.menuitem_add_files.set_sensitive(False)

            self.menuitem_remove_files.set_sensitive(False)

            self.menuitem_file_make_directory.set_sensitive(False)

            self.menuitem_file_rename.set_sensitive(False)

            self.menuitem_file_move.set_sensitive(False)

            #self.menutoolbutton_diff.set_sensitive(False)

            self.toolbutton_diff.set_sensitive(False)

            self.toolbutton_log.set_sensitive(False)

            self.toolbutton_commit.set_sensitive(False)

            self.toolbutton_pull.set_sensitive(False)

            self.toolbutton_push.set_sensitive(False)

        self.set_busy(self.treeview_right, False)

    def set_busy(self, widget, busy=True):

        if busy:

            widget.window.set_cursor(gtk.gdk.Cursor(gtk.gdk.WATCH))

        else:

            widget.window.set_cursor(gtk.gdk.Cursor(gtk.gdk.LEFT_PTR))

        gtk.main_iteration(0)

    def _harddisks(self):

        """ Returns hard drive letters under Win32. """

        try:

            import win32file

            import string

        except ImportError:

            if sys.platform == 'win32':

                print "pyWin32 modules needed to run Olive on Win32."

                sys.exit(1)

            else:

                pass

        driveletters = []

        for drive in string.ascii_uppercase:

            if win32file.GetDriveType(drive+':') == win32file.DRIVE_FIXED:

                driveletters.append(drive+':')

        return driveletters

    def gen_hard_selector(self):

        """ Generate the hard drive selector under Win32. """

        drives = self._harddisks()

        for drive in drives:

            self.combobox_drive.append_text(drive)

    def _refresh_drives(self, combobox):

        model = combobox.get_model()

        active = combobox.get_active()

        if active >= 0:

            drive = model[active][0]

            self.refresh_right(drive + '\\')

class OlivePreferences:

    """ A class which handles Olive's preferences. """

    def __init__(self):

        """ Initialize the Preferences class. """

        # Some default options

        self.defaults = { 'strict_commit' : False,

                          'dotted_files'  : False,

                          'window_width'  : 700,

                          'window_height' : 400,

                          'window_x'      : 40,

                          'window_y'      : 40,

                          'paned_position': 200 }

        # Create a config parser object

        self.config = ConfigParser.RawConfigParser()

        # Load the configuration

        if sys.platform == 'win32':

            # Windows - no dotted files

            self.config.read([os.path.expanduser('~/olive.conf')])

        else:

            self.config.read([os.path.expanduser('~/.olive.conf')])

    def _get_default(self, option):

        """ Get the default option for a preference. """

        try:

            ret = self.defaults[option]

        except KeyError:

            return None

        else:

            return ret

    def refresh(self):

        """ Refresh the configuration. """

        # First write out the changes

        self.write()

        # Then load the configuration again

        if sys.platform == 'win32':

            # Windows - no dotted files

            self.config.read([os.path.expanduser('~/olive.conf')])

        else:

            self.config.read([os.path.expanduser('~/.olive.conf')])

    def write(self):

        """ Write the configuration to the appropriate files. """

        if sys.platform == 'win32':

            # Windows - no dotted files

            fp = open(os.path.expanduser('~/olive.conf'), 'w')

            self.config.write(fp)

            fp.close()

        else:

            fp = open(os.path.expanduser('~/.olive.conf'), 'w')

            self.config.write(fp)

            fp.close()

    def get_preference(self, option, kind='str'):

        """ Get the value of the given option.

        :param kind: str/bool/int/float. default: str

        """

        if self.config.has_option('preferences', option):

            if kind == 'bool':

                return self.config.getboolean('preferences', option)

            elif kind == 'int':

                return self.config.getint('preferences', option)

            elif kind == 'float':

                return self.config.getfloat('preferences', option)

            else:

                return self.config.get('preferences', option)

        else:

            try:

                return self._get_default(option)

            except KeyError:

                return None

    def set_preference(self, option, value):

        """ Set the value of the given option. """

        if self.config.has_section('preferences'):

            self.config.set('preferences', option, value)