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#!/usr/bin/env python
# vim: set ts=4 sw=4 et:
#
# Copyright (C) 2005 Vincent Untz <vuntz@gnome.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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
#
import gobject
import gtk
import sys
try:
set
except:
from sets import Set as set
class PessulusSimpleEditableTreeview (gobject.GObject):
(
COLUMN_EDITABLE,
) = range (1)
__gsignals__ = {
"changed" : ( gobject.SIGNAL_RUN_LAST, None, (gobject.TYPE_PYOBJECT,) )
}
def __init__ (self, treeview, addbutton, editbutton, removebutton, sort = True, strip_text = True):
gobject.GObject.__init__(self)
self.content_set = None
self.selected_content = None
self.new_edited_path = None
self.editing = False
self.sensitive = True
self.strip_text = strip_text
self.treeview = treeview
self.addbutton = addbutton
self.editbutton = editbutton
self.removebutton = removebutton
self.liststore = gtk.ListStore (str)
self.treeview.set_model (self.liststore)
if sort:
self.liststore.set_sort_column_id (self.COLUMN_EDITABLE,
gtk.SORT_ASCENDING)
self.__create_columns ()
self.addbutton.connect ("clicked", self.__on_add_button_clicked)
self.editbutton.connect ("clicked", self.__on_edit_button_clicked)
self.removebutton.connect ("clicked", self.__on_remove_button_clicked)
treeselection = self.treeview.get_selection ()
treeselection.set_mode (gtk.SELECTION_SINGLE)
treeselection.connect ("changed", self.__on_treeselection_changed)
self.__update_sensitivity ()
def __create_columns (self):
self.column = gtk.TreeViewColumn ()
self.treeview.append_column (self.column)
self.cell = gtk.CellRendererText ()
self.column.pack_start (self.cell, True)
self.column.set_attributes (self.cell, text = self.COLUMN_EDITABLE)
self.cell.set_property("editable", True)
self.cell.connect("edited", self.__on_cell_edited)
# we want to know if we're editing or not
self.cell.connect("editing-started", self.__on_cell_editing_started)
# we need to connect to this signal since if we add a row
# and don't edit it, it shouldn't be really added
self.cell.connect("editing-canceled", self.__on_cell_editing_canceled)
def __on_cell_edited (self, cell, path, new_text):
self.editing = False
self.__update_sensitivity ()
new = False
if self.new_edited_path:
if self.new_edited_path != path:
new = True
else:
print >> sys.stderr, "Warning: path should have been a new edited one in the treeview"
self.new_edited_path = None
if self.strip_text:
text = new_text.strip ()
else:
text = new_text
# don't accept new items that are ""
if text == "" and new:
del (self.liststore[path])
return
if new or self.liststore[path][self.COLUMN_EDITABLE] != text:
# save the selected content so that it will be selected again
# later
self.selected_content = text
if not new:
self.content_set.remove (self.liststore[path][self.COLUMN_EDITABLE])
if text != "":
self.content_set.add (text)
self.__update_model ()
self.emit ("changed", self.content_set)
def __on_cell_editing_started (self, cell, editable, path):
self.editing = True
self.__update_sensitivity ()
def __on_cell_editing_canceled (self, cell):
self.editing = False
self.__update_sensitivity ()
if self.new_edited_path:
del (self.liststore[self.new_edited_path])
self.new_edited_path = None
def __on_add_button_clicked (self, button):
# add a row and start editing it
iter = self.liststore.append ()
path = self.liststore.get_path (iter)
self.treeview.set_cursor_on_cell (path, self.column, self.cell, True)
self.new_edited_path = path
def __on_edit_button_clicked (self, button):
model, iter = self.treeview.get_selection ().get_selected ()
# if nothing selected...
if not iter:
print >> sys.stderr, "Warning: ask for edition in treeview while nothing selected"
return
path = model.get_path (iter)
self.treeview.set_cursor_on_cell (path, self.column, self.cell, True)
def __on_remove_button_clicked (self, button):
model, iter = self.treeview.get_selection ().get_selected ()
# if nothing selected...
if not iter:
print >> sys.stderr, "Warning: ask for removal in treeview while nothing selected"
return
selected_value = model[iter][self.COLUMN_EDITABLE]
# if selection should not be here...
if selected_value not in self.content_set:
print >> sys.stderr, "Warning: %s should not be in the treeview" % selected_value
del (model[iter])
return
# try to find the future selection (after this item has been removed)
# note that we can not save a path since the paths might change
new_selected_iter = model.iter_next (iter)
if not new_selected_iter:
# there's no next item. This item was the last one. Select the
# item that's before.
children = model.iter_n_children (None)
if children > 1:
new_selected_iter = model.iter_nth_child (None, children - 2)
if new_selected_iter:
path = model.get_path (new_selected_iter)
self.selected_content = model[path][self.COLUMN_EDITABLE]
self.content_set.remove (selected_value)
self.__update_model ()
self.emit ("changed", self.content_set)
def __on_treeselection_changed (self, treeselection):
self.__update_sensitivity ()
def __update_sensitivity (self):
self.treeview.set_sensitive (self.sensitive)
sensitive = self.sensitive and not self.editing
self.addbutton.set_sensitive (sensitive)
selected = self.treeview.get_selection ().count_selected_rows () > 0
sensitive = self.sensitive and not self.editing and selected
self.editbutton.set_sensitive (sensitive)
sensitive = self.sensitive and selected
self.removebutton.set_sensitive (sensitive)
def __update_model (self):
def select_if_should (model, path, iter, data):
if self.selected_content == model[path][data.COLUMN_EDITABLE]:
data.treeview.get_selection ().select_path (path)
data.treeview.scroll_to_cell (path)
return True
self.liststore.clear ()
for value in self.content_set:
iter = self.liststore.append ()
self.liststore.set (iter, self.COLUMN_EDITABLE, value)
if self.selected_content:
self.liststore.foreach (select_if_should, self)
self.selected_content = None
self.__update_sensitivity ()
def set_sensitive (self, sensitive):
self.sensitive = sensitive
self.__update_sensitivity ()
def update_set (self, set):
if set == self.content_set:
return
model, iter = self.treeview.get_selection ().get_selected ()
if iter:
# save the selected content so that it will be selected again
# later
self.selected_content = model[iter][self.COLUMN_EDITABLE]
self.content_set = set.copy ()
self.__update_model ()
if gtk.pygtk_version < (2, 8, 0):
gobject.type_register (PessulusSimpleEditableTreeview)
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