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# -*- coding: utf-8 -*-
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# -----------------------------------------------------------------------------
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# Gettings Things Gnome! - a personal organizer for the GNOME desktop
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# Copyright (c) 2008-2012 - Lionel Dricot & Bertrand Rousseau
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# This program is free software: you can redistribute it and/or modify it under
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# the terms of the GNU General Public License as published by the Free Software
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# Foundation, either version 3 of the License, or (at your option) any later
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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# You should have received a copy of the GNU General Public License along with
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# this program. If not, see <http://www.gnu.org/licenses/>.
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# -----------------------------------------------------------------------------
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""" Tag completion which is connected to LibLarch """
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FILTER_NAME = '@@TagCompletion'
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def tag_filter(tag, parameters=None):
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""" Show only regular tags which has some active tasks or the user has
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changed an attribute (e.g. color, workview) => only important tags """
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if tag.get_id().startswith('@'):
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has_attributes = len(tag.get_all_attributes(butname=True)) > 0
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return has_attributes or tag.get_active_tasks_count() > 0
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def normalize_unicode(string):
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""" Unicode characters with diacritic could have more than just one
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representation. We force them to be in just one of them."""
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return unicodedata.normalize('NFC', unicode(string))
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def tag_match(completion, key, iterator, column):
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""" Does key match an item in the list?
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Don't match any item if only artefacts (!, @) are inserted
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(don't show all tags) """
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key = key.lower().lstrip()
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if key in ['', '!', '@', '!@']:
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text = completion.get_model().get_value(iterator, column)
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text = normalize_unicode(text.lower())
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return text.startswith(key)
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class TagCompletion(gtk.EntryCompletion):
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""" Tag completion which allows to enter 4 representation of a '@tag':
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['@tag', '!@tag', 'tag', '!tag']
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The user can choose wheter write tag with or without '@',
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with or without '!' which is used for negation.
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The list of tasks is updated by LibLarch callbacks """
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def __init__(self, tree):
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""" Initialize entry completion
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Create a list store which is connected to a LibLarch and
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gtk.EntryCompletion.__init__(self)
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self.tags = gtk.ListStore(str)
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tree = tree.get_basetree()
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tree.add_filter(FILTER_NAME, tag_filter, {'flat': True})
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tag_tree = tree.get_viewtree('tag_completion', False)
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tag_tree.register_cllbck('node-added-inview', self._on_tag_added)
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tag_tree.register_cllbck('node-deleted-inview', self._on_tag_deleted)
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tag_tree.apply_filter(FILTER_NAME)
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self.set_model(self.tags)
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self.set_text_column(0)
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self.set_match_func(tag_match, 0)
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self.set_inline_completion(True)
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self.set_inline_selection(True)
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self.set_popup_single_match(False)
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def _try_insert(self, name):
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""" Insert an item into ListStore if it is not already there.
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It keeps the list sorted. """
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for position, row in enumerate(self.tags, 1):
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self.tags.insert(position, (name, ))
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def _on_tag_added(self, tag, path):
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""" Add all variants of tag """
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tag = normalize_unicode(tag)
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self._try_insert(tag)
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self._try_insert('!' + tag)
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self._try_insert(tag[1:])
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self._try_insert('!' + tag[1:])
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def _try_delete(self, name):
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""" Delete an item if it is in the list """
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for row in self.tags:
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self.tags.remove(row.iter)
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def _on_tag_deleted(self, tag, path):
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""" Delete all variants of tag """
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tag = normalize_unicode(tag)
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self._try_delete(tag)
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self._try_delete('!' + tag)
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self._try_delete(tag[1:])
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self._try_delete('!' + tag[1:])
added
removed
GTG/gtk/tag_completion.py
