fix #86 Property container has no property Support in FreeCAD 0.22 > …

…36274

lattice2BaseFeature.py

@@ -80,12 +80,13 @@ def isObjectLattice(documentObject):
     if documentObject.isDerivedFrom('App::Placement') or documentObject.isDerivedFrom('PartDesign::CoordinateSystem'):
         ret = True
     if documentObject.isDerivedFrom('PartDesign::ShapeBinder'):
-        if len(documentObject.Support) == 1 and documentObject.Support[0][1] == ('',):
-            ret = isObjectLattice(documentObject.Support[0][0])
+        attachmentSupport = getAttachmentSupport(documentObject)
+        if len(attachmentSupport) == 1 and attachmentSupport[0][1] == ('',):
+            ret = isObjectLattice(attachmentSupport[0][0])
     if hasattr(documentObject, 'IAm') and documentObject.IAm == 'PartOMagic.Ghost':
         ret = isObjectLattice(documentObject.Base)
     return ret
-    
+
 def getMarkerSizeEstimate(ListOfPlacements, feature = None):
     '''getMarkerSizeEstimate(ListOfPlacements, feature = None): computes the default marker size for the array of placements.
     If feature is provided, marker size property will be assigned to viewer-based autosize if size based on array content is zero.'''
@@ -262,12 +263,17 @@ def loads(self,state):
     def disableAttacher(self, selfobj, enable= False):
         if selfobj.isDerivedFrom('Part::Part2DObject'):
             attachprops = [
-                'Support', 
                 'MapMode', 
                 'MapReversed', 
                 'MapPathParameter', 
                 'AttachmentOffset', 
             ]
+            if hasattr(selfobj, 'AttachmentSupport'):
+                attachprops.append('AttachmentSupport')
+            elif hasattr(selfobj, 'Support'):
+                attachprops.append('Support')
+            else:
+                raise AttributeError('No support property found')
             for prop in attachprops:
                 selfobj.setEditorMode(prop, 0 if enable else 2)
             if enable:

lattice2Common.py

@@ -145,3 +145,13 @@ def bodyOf(feature):
         return body
     else:
         return None
+
+
+# Older FreeCAD has Support, newer has AttachmentSupport: https://github.com/FreeCAD/FreeCAD/issues/12894
+
+def getAttachmentSupport(documentObject):
+    if hasattr(documentObject, 'AttachmentSupport'):
+        return documentObject.AttachmentSupport
+    elif hasattr(documentObject, 'Support'):
+        return documentObject.Support
+    raise AttributeError('No support property found')

lattice2Compatibility.py

@@ -45,5 +45,9 @@ def get_fc_version():
 
 attach_extension_era = rev_number >= 9177
 no_extension_proxy_era = rev_number >= 23869
+attachment_support_name = 'AttachmentSupport'
+if rev_number < 36274:
+    # Before 0.22.0dev.36274 https://github.com/FreeCAD/FreeCAD/issues/12894
+    attachment_support_name = 'Support'
 
-del App
+del App

lattice2PolarArray2.py

@@ -32,6 +32,7 @@
 import Part
 
 from lattice2Common import *
+from lattice2Compatibility import attachment_support_name
 import lattice2BaseFeature
 from lattice2BaseFeature import assureProperty
 import lattice2Executer
@@ -108,8 +109,9 @@ def updateReadonlyness(self, selfobj):
 
     def fetchArc(self, selfobj):
         """returns None, or tuple (arc_span, arc_radius)"""
-        if selfobj.Support:
-            lnkobj, sub = selfobj.Support[0]
+        attachmentSupport = getAttachmentSupport(selfobj)
+        if attachmentSupport:
+            lnkobj, sub = attachmentSupport[0]
             sub = sub[0]
             #resolve the link        
             return fetchArc(lnkobj, sub)
@@ -205,7 +207,8 @@ def derivedExecute(self,selfobj):
         return output
 
     def isOnArc(self, selfobj):
-        return selfobj.MapMode == 'Concentric' and len(linkSubList_convertToOldStyle(selfobj.Support)) == 1
+        attachmentSupport = getAttachmentSupport(selfobj)
+        return selfobj.MapMode == 'Concentric' and len(linkSubList_convertToOldStyle(attachmentSupport)) == 1
 
     def onChanged(self, selfobj, propname):
         super(PolarArray, self).onChanged(selfobj, propname)
@@ -242,13 +245,14 @@ def CreatePolarArray(genmode = 'SpanN'):
             fullcircle = abs(arcspan - turn) < ParaConfusion
             endinclusive = not fullcircle
             usearcrange = 'as Step' if genmode == 'StepN' and not fullcircle else 'as Span'
+
             FreeCADGui.doCommand(
-                'f.Support = [(App.ActiveDocument.{lnk}, {sub})]\n'
+                'f.{attachmentsupport} = [(App.ActiveDocument.{lnk}, {sub})]\n'
                 'f.MapMode = \'Concentric\'\n'
                 'f.UseArcRange = {usearcrange}\n'
                 'f.EndInclusive = {endinclusive}\n'
                 'f.UseArcRadius = True'
-                .format(lnk= lnk.Name, sub= repr(sub), usearcrange= repr(usearcrange), endinclusive= repr(endinclusive))
+                .format(attachmentsupport = attachment_support_name, lnk= lnk.Name, sub= repr(sub), usearcrange= repr(usearcrange), endinclusive= repr(endinclusive))
             )
             attached = True
     if not attached: