erp5_wendelin: fix array preview for new UI and show data in reversed order

See merge request nexedi/wendelin!48

bt5/erp5_wendelin/SkinTemplateItem/portal_skins/erp5_wendelin/DataArray_getArrayRowList.py

@@ -3,10 +3,6 @@ from Products.ERP5Type.Document import newTempBase
 if context.getArray() is None:
   return []
 
-length = context.getArrayShape()[0]
-if length == 0:
-  return []
-
 class SequenceSliceMap():
   def __init__(self, sequence_slice, usual_slice_length, total_length):
     self.sequence_slice = sequence_slice
@@ -41,22 +37,32 @@ def createTempBase(nr, row):
                      **{col[0]: str(getElement(row, i)) for i, col in column_iterator})
 
 
-
+length = context.getArrayShape()[0]
 
 # never access more than 1000 lines at once
 list_lines = min(list_lines, limit, 1000)
-list_end = list_start + list_lines
 
-if list_end > length:
-  list_end = length
-  list_start = list_end - (list_end % list_lines)
+if context.REQUEST.has_key("limit"):
+  list_start = limit[0]
+  list_lines = limit[1] - limit[0]
+
+orig_list_start = list_start
+if orig_list_start + list_lines > length:
+  orig_list_start = length - length - (length % list_lines)
+
+list_start = max(length - list_start - list_lines, 0)
+if abs(orig_list_start) < list_lines and orig_list_start != 0:
+  list_end = abs(orig_list_start)
+else:
+  list_end = max(list_start + list_lines, 0)
+#list_end = max(list_start + list_lines, 0)
 
 if list_start == list_end:
   array_slice = [context.getArrayIndex(list_start)]
 else:
   array_slice = context.getArraySlice(list_start, list_end)
 
-temp_base_list = [createTempBase(nr + list_start, row) for nr, row in enumerate(array_slice)]
+temp_base_list = list(reversed([createTempBase(nr + list_start, row) for nr, row in enumerate(array_slice)]))
 
 # return lazy sequence of temp objects
 return SequenceSliceMap(temp_base_list, list_lines, length)

bt5/erp5_wendelin/SkinTemplateItem/portal_skins/erp5_wendelin/DataArray_viewPreview/listbox.xml

@@ -95,9 +95,7 @@
                 </item>
                 <item>
                     <key> <string>url_columns</string> </key>
-                    <value>
-                      <persistent> <string encoding="base64">AAAAAAAAAAQ=</string> </persistent>
-                    </value>
+                    <value> <string></string> </value>
                 </item>
               </dictionary>
             </value>
@@ -136,7 +134,7 @@
                 <item>
                     <key> <string>list_method</string> </key>
                     <value>
-                      <persistent> <string encoding="base64">AAAAAAAAAAU=</string> </persistent>
+                      <persistent> <string encoding="base64">AAAAAAAAAAQ=</string> </persistent>
                     </value>
                 </item>
                 <item>
@@ -186,19 +184,6 @@
     </pickle>
   </record>
   <record id="4" aka="AAAAAAAAAAQ=">
-    <pickle>
-      <global name="TALESMethod" module="Products.Formulator.TALESField"/>
-    </pickle>
-    <pickle>
-      <dictionary>
-        <item>
-            <key> <string>_text</string> </key>
-            <value> <string>python: [(col[0], None) for col in here.DataArray_getArrayColumnList()]</string> </value>
-        </item>
-      </dictionary>
-    </pickle>
-  </record>
-  <record id="5" aka="AAAAAAAAAAU=">
     <pickle>
       <global name="Method" module="Products.Formulator.MethodField"/>
     </pickle>