content selection mapped to up/down

frontend/apps/reader/modules/readerrolling.lua

@@ -140,15 +140,9 @@ function ReaderRolling:registerKeyEvents()
         }
     end
     if Device:hasDPad() and Device:hasPageUpDownKeys() then
-        self.key_events.MoveUp = {
-            { "Up" },
-            event = "Panning",
-            args = {0, -1},
-        }
-        self.key_events.MoveDown = {
-            { "Down" },
-            event = "Panning",
-            args = {0,  1},
+        self.key_events.ContentSelection = {
+            { { "Up", "Down" } },
+            event = "ContentSelection",
         }
         self.key_events.GotoNextChapter = {
             { "Right" },
@@ -812,6 +806,10 @@ function ReaderRolling:onGotoPrevChapter()
     return true
 end
 
+function ReaderRolling:onContentSelection()
+    return self.ui.highlight:onStartHighlightIndicator()
+end
+
 function ReaderRolling:onNotCharging()
     self:updateBatteryState()
 end