--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/ztfy/utils/browser/textlinelist.py	Thu Aug 30 14:58:30 2012 +0200
@@ -0,0 +1,69 @@
+### -*- coding: utf-8 -*- ####################################################
+##############################################################################
+#
+# Copyright (c) 2012 Thierry Florac <tflorac AT ulthar.net>
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+
+
+# import standard packages
+
+# import Zope3 interfaces
+from z3c.form.interfaces import IWidget, IFieldWidget, ITextWidget, IFormLayer
+
+# import local interfaces
+from ztfy.utils.schema import ITextLineListField
+
+# import Zope3 packages
+from z3c.form.browser.text import TextWidget
+from z3c.form.converter import SequenceDataConverter
+from z3c.form.widget import FieldWidget
+from zope.component import adapter, adapts
+from zope.interface import implementer, implementsOnly
+
+# import local packages
+from ztfy.jqueryui import jquery_multiselect
+
+
+class ITextLineListWidget(ITextWidget):
+    """TextLineList widget interface"""
+
+
+class TextLineListDataConverter(SequenceDataConverter):
+    """TextLineList field data converter"""
+
+    adapts(ITextLineListField, IWidget)
+
+    def toWidgetValue(self, value):
+        if value is self.field.missing_value:
+            return []
+        return '|'.join(value)
+
+    def toFieldValue(self, value):
+        if not value:
+            return self.field.missing_value
+        return value.split('|')
+
+
+class TextLineListWidget(TextWidget):
+    """TextLineList field widget"""
+
+    implementsOnly(ITextLineListWidget)
+
+    def render(self):
+        jquery_multiselect.need()
+        return super(TextLineListWidget, self).render()
+
+
+@adapter(ITextLineListField, IFormLayer)
+@implementer(IFieldWidget)
+def TextLineListFieldWidgetFactory(field, request):
+    return FieldWidget(field, TextLineListWidget(request))