chore: various minor cleanups

frontend/apps/reader/modules/readerfrontlight.lua

@@ -83,9 +83,7 @@ end
 
 function ReaderFrontLight:onShowFlDialog()
     local FrontLightWidget = require("ui/widget/frontlightwidget")
-    local fl = FrontLightWidget:new{
-    }
-    UIManager:show(fl)
+    UIManager:show(FrontLightWidget:new{})
 end
 
 function ReaderFrontLight:close()

frontend/ui/widget/filechooser.lua

@@ -108,10 +108,13 @@ function FileChooser:genItemTableFromPath(path)
         local dir_files = {}
         local subdir_path = self.path.."/"..dir.name
         self.list(subdir_path, sub_dirs, dir_files)
-        local items = #sub_dirs + #dir_files
-        local istr = util.template(
-            items == 1 and _("1 item")
-            or _("%1 items"), items)
+        local num_items = #sub_dirs + #dir_files
+        local istr
+        if num_items == 1 then
+            istr = _("1 item")
+        else
+            istr = util.template(_("%1 items"), num_items)
+        end
         table.insert(item_table, {
             text = dir.name.."/",
             mandatory = istr,
@@ -148,8 +151,8 @@ function FileChooser:genItemTableFromPath(path)
             path = full_path
         })
     end
-    -- lfs.dir iterated node string may be encoded with some weird codepage on Windows
-    -- we need to encode them to utf-8
+    -- lfs.dir iterated node string may be encoded with some weird codepage on
+    -- Windows we need to encode them to utf-8
     if ffi.os == "Windows" then
         for k, v in pairs(item_table) do
             if v.text then

frontend/ui/widget/frontlightwidget.lua

@@ -42,7 +42,7 @@ function FrontLightWidget:init()
         self.fl_cur = self.fl_min
     end
     local steps_fl = self.fl_max - self.fl_min + 1
-    self.one_step = math.ceil(steps_fl  / 25 )
+    self.one_step = math.ceil(steps_fl / 25)
     self.steps = math.ceil(steps_fl / self.one_step)
     if (self.steps - 1) * self.one_step < self.fl_max - self.fl_min then
         self.steps = self.steps + 1
@@ -91,7 +91,6 @@ function FrontLightWidget:generateProgressGroup(width, height, fl_level, step)
 end
 
 function FrontLightWidget:setProgress(num, step)
-    --clear previous data
     self.fl_container:clear()
     local padding_span = VerticalSpan:new{ width = self.span }
     local button_group_down = HorizontalGroup:new{ align = "center" }