Add update partial method for listview

listview.lua

@@ -18,6 +18,10 @@ local function redrawLine(idx)
         frame.setCursorPos(1, idx-paginationOffset+1)
         if drawLine then
             drawLine(frame, backingList[idx])
+        else
+            frame.setBackgroundColor(colors.red)
+            frame.clearLine()
+            frame.setBackgroundColor(colors.black)
         end
     end
 end
@@ -59,6 +63,10 @@ local function redraw()
             end
             backingIdx = backingIdx + 1
         end
+    else
+        frame.setBackgroundColor(colors.red)
+        frame.clear()
+        frame.setBackgroundColor(colors.black)
     end
 end
 
@@ -69,6 +77,20 @@ local function updatePage(newOffset)
     end
 end
 
+local function updatePartial(filter)
+    if drawLine then
+        local tw, th = frame.getSize()
+        local backingIdx = paginationOffset
+        for idx = 1, th, 1 do
+            frame.setCursorPos(1, idx)
+            if backingList[backingIdx] ~= nil and filter(backingList[backingIdx]) then
+                drawLine(frame, backingList[backingIdx])
+            end
+            backingIdx = backingIdx + 1
+        end
+    end
+end
+
 
 return {
     setTerm=setTerm,
@@ -78,4 +100,5 @@ return {
     clearFrom=clearFrom,
     redraw=redraw,
     updatePage=updatePage,
+    updatePartial=updatePartial,
 }

requests.lua

@@ -101,6 +101,7 @@ local function onTouch(self, touch_x, touch_y)
             else
                 permset.add(allowed_items, obj.answer.name)
             end
+            listview.updatePartial(function (item) return item.answer ~= nil and item.answer.name == obj.answer.name end)
             return true
         end
     end