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|
# This file is part of pybliographer
#
# Copyright (C) 1998-2004 Frederic GOBRY
# Email : gobry@pybliographer.org
#
# 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.
#
#
''' This module implements a Dialog to define Sort criterions '''
import os, string
import gtk, gobject
from gnome import ui
from Pyblio import Connector, Sort, Config, version
from Pyblio.GnomeUI import Utils
import cPickle
pickle = cPickle
del cPickle
class SortDialog (Connector.Publisher, Utils.GladeWindow):
""" Provide a configuration dialog for sorting the main index.
Emit a 'sort-data' signal when the user chooses new sort options.
"""
# This dialog is described as a glade XML file
gladeinfo = { 'file': 'sort.glade',
'root': '_w_sort',
'name': 'sort'
}
def __init__ (self, sort, parent = None):
""" Create the dialog.
- current_sort: the current sorting options
- parent: parent window
"""
Utils.GladeWindow.__init__ (self, parent)
self._model = gtk.ListStore (gtk.gdk.Pixbuf, str, gobject.TYPE_PYOBJECT, int)
self._w_tree.set_model (self._model)
# Only the first two rows are visibles, the others are for
# internal bookkeeping.
col = gtk.TreeViewColumn ('Direction', gtk.CellRendererPixbuf (), pixbuf = 0)
self._w_tree.append_column (col)
col = gtk.TreeViewColumn ('Field', gtk.CellRendererText (), text = 1)
self._w_tree.append_column (col)
self._w_sort.show ()
self._icon = {0: None}
for id, stock in ((1, gtk.STOCK_GO_UP), (-1, gtk.STOCK_GO_DOWN)):
self._icon [id] = self._w_tree.render_icon (stock_id = stock,
size = gtk.ICON_SIZE_MENU,
detail = None)
# Gather the current sort info for all the available
# fields. We create a tuple containing:
# (display name, sort criterion instance, sort direction)
#
# The sort direction can be:
# 0: not sorting according to this
# 1: ascending sort
# -1: descending sort
if sort: sort = sort.fields
else: sort = []
# These are additional search fields
avail = [[_("[Entry Type]"), Sort.TypeSort (), 0],
[_("[Key Value]"), Sort.KeySort (), 0]]
fields = map (lambda x: x.name,
Config.get ('base/fields').data.values ())
fields.sort ()
def make_one (x):
return [x, Sort.FieldSort (x.lower ()), 0]
avail = avail + map (make_one, fields)
# Update the list with the current user settings
for v in avail:
if v [1] not in sort: continue
i = sort.index (v [1])
if sort [i].ascend: v [2] = +1
else: v [2] = -1
# In the list, display the fields that are used in the current
# sort procedure first.
for k, v, d in filter (lambda x: x [2], avail):
s = self._icon [d]
self._model.append ((s, k, v, d))
s = self._icon [0]
for k, v, d in filter (lambda x: x [2] == 0, avail):
self._model.append ((s, k, v, d))
return
def on_activate (self, view, path, col):
''' Toggle between the three states for the selected field (do
not sort, ascending sort, descending sort) '''
row = self._model [path]
d = ((row [3] + 2) % 3) - 1
row [3] = d
row [0] = self._icon [d]
return
def _results (self):
''' Extract the current sorting settings '''
sort = []
for r in self._model:
item, dir = r [2], r [3]
# Only consider fields on which we sort
if dir == 0: continue
# Store the direction of sorting in each item
if dir > 0: item.ascend = True
else: item.ascend = False
sort.append (item)
if not sort: sort = None
else: sort = Sort.Sort (sort)
return sort
def _on_set_as_default (self, * arg):
''' Pickle the current sorting settings to be used as the
default value '''
Utils.config.set_string ('/apps/pybliographic/sort/default',
pickle.dumps (self._results ()))
return
def on_cancel (self, * arg):
''' Invoked when the user clicks on Cancel '''
self.size_save ()
self._w_sort.destroy ()
return
def on_accept (self, * arg):
''' Invoked when the user clicks on Apply '''
self.size_save ()
self.issue ('sort-data', self._results ())
self._w_sort.destroy ()
return
|
