From 59ffe5bc5287cd07dd377215286165f297bd5ed0 Mon Sep 17 00:00:00 2001
From: "Jens W. Klein" <jk@kleinundpartner.at>
Date: Thu, 28 Mar 2019 16:13:11 +0100
Subject: [PATCH] missing class

---
 plone/app/z3cform/factories.py | 16 ++++++++++++++++
 plone/app/z3cform/widget.py    |  2 +-
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/plone/app/z3cform/factories.py b/plone/app/z3cform/factories.py
index e69de29b..0bddc811 100644
--- a/plone/app/z3cform/factories.py
+++ b/plone/app/z3cform/factories.py
@@ -0,0 +1,16 @@
+# -*- coding: utf-8 -*-
+from zope.interface import implementer
+from plone.namedfile.storages import MAXCHUNKSIZE
+from plone.namedfile.interfaces import IStorage
+
+
+@implementer(IStorage)
+class Zope2FileUploadStorable(object):
+
+    def store(self, data, blob):
+        data.seek(0)
+        with blob.open('w') as fp:
+            block = data.read(MAXCHUNKSIZE)
+            while block:
+                fp.write(block)
+                block = data.read(MAXCHUNKSIZE)
diff --git a/plone/app/z3cform/widget.py b/plone/app/z3cform/widget.py
index e24f55e8..7d9fd48d 100644
--- a/plone/app/z3cform/widget.py
+++ b/plone/app/z3cform/widget.py
@@ -3,6 +3,7 @@
 from Acquisition import ImplicitAcquisitionWrapper
 from lxml import etree
 from OFS.interfaces import ISimpleItem
+from plone.app.event.base import first_weekday
 from plone.app.textfield.value import RichTextValue
 from plone.app.textfield.widget import RichTextWidget as patext_RichTextWidget
 from plone.app.vocabularies.terms import TermWithDescription
@@ -10,7 +11,6 @@
 from plone.app.widgets.base import InputWidget
 from plone.app.widgets.base import SelectWidget as BaseSelectWidget
 from plone.app.widgets.base import TextareaWidget
-from plone.app.widgets.utils import first_weekday
 from plone.app.widgets.utils import get_context_url
 from plone.app.widgets.utils import get_date_options
 from plone.app.widgets.utils import get_datetime_options