From 0b2ccdee6d3b34c524109f3adfbd3b045088d995 Mon Sep 17 00:00:00 2001
From: Nick Hall <nick__hall@hotmail.com>
Date: Tue, 15 Jan 2013 18:27:43 +0000
Subject: [PATCH] Add family filter to match twins

svn: r21132
---
 gramps/gen/filters/rules/family/__init__.py  |  2 +
 gramps/gen/filters/rules/family/_hastwins.py | 64 ++++++++++++++++++++
 po/POTFILES.in                               |  1 +
 3 files changed, 67 insertions(+)
 create mode 100644 gramps/gen/filters/rules/family/_hastwins.py

diff --git a/gramps/gen/filters/rules/family/__init__.py b/gramps/gen/filters/rules/family/__init__.py
index 7d2c5ff01..f61edbacf 100644
--- a/gramps/gen/filters/rules/family/__init__.py
+++ b/gramps/gen/filters/rules/family/__init__.py
@@ -60,6 +60,7 @@ from ._childhasnameof import ChildHasNameOf
 from ._childhasidof import ChildHasIdOf
 from ._changedsince import ChangedSince
 from ._hastag import HasTag
+from ._hastwins import HasTwins
 
 editor_rule_list = [
     AllFamilies,
@@ -89,4 +90,5 @@ editor_rule_list = [
     ChildHasIdOf,
     ChangedSince,
     HasTag,
+    HasTwins,
 ]
diff --git a/gramps/gen/filters/rules/family/_hastwins.py b/gramps/gen/filters/rules/family/_hastwins.py
new file mode 100644
index 000000000..1f19f732d
--- /dev/null
+++ b/gramps/gen/filters/rules/family/_hastwins.py
@@ -0,0 +1,64 @@
+#
+# Gramps - a GTK+/GNOME based genealogy program
+#
+# Copyright (C) 2013    Nick Hall
+#
+# 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
+#
+
+# $Id$
+
+#-------------------------------------------------------------------------
+#
+# Standard Python modules
+#
+#-------------------------------------------------------------------------
+from ....ggettext import gettext as _
+
+#-------------------------------------------------------------------------
+#
+# GRAMPS modules
+#
+#-------------------------------------------------------------------------
+from .. import Rule
+from ....lib.childreftype import ChildRefType
+
+#-------------------------------------------------------------------------
+#
+# HasTwins
+#
+#-------------------------------------------------------------------------
+class HasTwins(Rule):
+    """Rule that checks for a family with twins"""
+
+    name        = _('Families with twins')
+    description = _("Matches families with twins")
+    category    = _('Child filters')
+
+    def apply(self, db, family):
+        date_list = []
+        for childref in family.get_child_ref_list():
+            if int(childref.get_mother_relation()) == ChildRefType.BIRTH:
+                child = db.get_person_from_handle(childref.ref)
+                birthref = child.get_birth_ref()
+                if birthref:
+                    birth = db.get_event_from_handle(birthref.ref)
+                    sortval = birth.get_date_object().get_sort_value()
+                    if sortval != 0:
+                        if sortval in date_list:
+                            return True
+                        else:
+                            date_list.append(sortval)
+        return False
diff --git a/po/POTFILES.in b/po/POTFILES.in
index 7a076c152..f9d7cc383 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -95,6 +95,7 @@ gramps/gen/filters/rules/family/_hasreltype.py
 gramps/gen/filters/rules/family/_hassourcecount.py
 gramps/gen/filters/rules/family/_hassourceof.py
 gramps/gen/filters/rules/family/_hastag.py
+gramps/gen/filters/rules/family/_hastwins.py
 gramps/gen/filters/rules/family/_isbookmarked.py
 gramps/gen/filters/rules/family/_matchesfilter.py
 gramps/gen/filters/rules/family/_matchessourceconfidence.py