From d49d9ea948b6a6a14350d22fd0d7cc7fb8d75429 Mon Sep 17 00:00:00 2001
From: JensDiemer <git@jensdiemer.de>
Date: Mon, 21 Jan 2019 10:22:37 +0100
Subject: [PATCH] new: "DOCDATA_CSS_ID" to fix Attribute 'id' must appear on
 element 'ns0:css' #16

https://github.com/django-oscar/django-oscar-docdata/issues/16
---
 oscar_docdata/appsettings.py |  3 +++
 oscar_docdata/gateway.py     | 49 ++++++++++++++++++++++++++++++++++--
 2 files changed, 50 insertions(+), 2 deletions(-)

diff --git a/oscar_docdata/appsettings.py b/oscar_docdata/appsettings.py
index cc198cb..ee22f1f 100644
--- a/oscar_docdata/appsettings.py
+++ b/oscar_docdata/appsettings.py
@@ -67,3 +67,6 @@
     '0091': 'Friesland Bank',
     '0161': 'van Lanschot Bankiers'
 })
+
+# CSS file selection in the payment menu
+DOCDATA_CSS_ID = getattr(settings, 'DOCDATA_CSS_ID', 1)
diff --git a/oscar_docdata/gateway.py b/oscar_docdata/gateway.py
index e89ef6d..08b07cc 100644
--- a/oscar_docdata/gateway.py
+++ b/oscar_docdata/gateway.py
@@ -309,7 +309,8 @@ def create(self,
         # paymentPreferences.exhortation.period2 ?
 
         # Menu preferences are empty. They are used for CSS file selection in the payment menu.
-        menuPreferences = self.client.factory.create('ns0:menuPreferences')
+        css = StyleSheetID(id=css_id)
+        menuPreferences = MenuPreferences(css)
 
         # Execute create payment order request.
         #
@@ -329,7 +330,7 @@ def create(self,
             merchant=self.merchant,
             merchantOrderReference=order_id,
             paymentPreferences=paymentPreferences,
-            menuPreferences=menuPreferences,
+            menuPreferences=menuPreferences.to_xml(factory),
             shopper=shopper.to_xml(factory),
             totalGrossAmount=total_gross_amount.to_xml(factory),
             billTo=bill_to.to_xml(factory),
@@ -851,6 +852,50 @@ def to_xml(self, factory):
         return element
 
 
+class StyleSheetID:
+    """
+    The id of the CSS file that should be used in the payment menu.
+
+    <complexType name="menuPreferences">
+        <sequence>
+            <element name="css" minOccurs="0" maxOccurs="1">
+                <annotation>
+                    <documentation>
+                        The id of the CSS file that should be used in
+                        the payment menu.
+                    </documentation>
+                </annotation>
+                <complexType>
+                    <attribute name="id" type="int" use="required"/>
+                </complexType>
+            </element>
+        </sequence>
+    </complexType>
+    """
+
+    def __init__(self, id):
+        self.id = int(id)
+
+    def to_xml(self, factory):
+        node = factory.create("ns0:css")
+        node.id = id
+        return node
+
+class MenuPreferences:
+    """
+    CSS file selection in the payment menu
+    """
+
+    def __init__(self, css):
+        assert isinstance(css, StyleSheetID)
+        self.css = css
+
+    def to_xml(self, factory):
+        node = factory.create("ns0:menuPreferences")
+        node.css = self.css.to_xml(factory)
+        return node
+
+
 class Quantity(object):
     """
     An quantity for Docdata