Iterate over children as normal

gfx/list.lua

@@ -10,14 +10,15 @@ function List:adjustPositions(from)
   local vertical = self:isVertical()
   local newDims = 1
   local getDim = vertical and function(e) return e:getHeight() end or function(e) return e:getWidth() end
-  for _,element in self:_iterateChildren{ to = from } do
-    newDims = newDims + getDim(element)
+  local children = self:_children()
+  for i=1,from-1 do
+    newDims = newDims + getDim(children[i])
   end
 
   local setDim = vertical and function(e, dim) e:setY(dim) end or function(e, dim) e:setX(dim) end
-  for _, element in self:_iterateChildren{ from = from } do
-    setDim(element, newDims)
-    newDims = newDims + getDim(element)
+  for i=from,#children do
+    setDim(children[i], newDims)
+    newDims = newDims + getDim(children[i])
   end
 end
 

gfx/prop/children.lua

@@ -6,15 +6,19 @@ local Children = Prop:new{ defaultState = {}, uid = "CHILDREN" }
 function Children:with(elementType)
   local propSelf = self
   function elementType:_iterateChildren(opts)
-    return ipairs(propSelf:getState(self))
+    return ipairs(self:_children())
+  end
+
+  function elementType:_children()
+    return propSelf:getState(self)
   end
 
   function elementType:childCount()
-    return #propSelf:getState(self)
+    return #self:_children()
   end
 
   function elementType:_childAt(index)
-    return propSelf:getState(self)[elementType:_validChildIndex(index)]
+    return self:_children()[elementType:_validChildIndex(index)]
   end
 
   function elementType:_validChildIndex(from)