DialogDemo: use explicit imports

programs/DialogDemo.hs

@@ -2,57 +2,62 @@
 module Main where
 
 import Data.Monoid
-import Graphics.Vty hiding (translate)
+import qualified Graphics.Vty as V
 
-import Brick.Main
+import qualified Brick.Main as M
 import Brick.Widgets.Core
-import Brick.Widgets.Dialog
-import Brick.Widgets.Center
-import Brick.AttrMap
-import Brick.Util
-import Brick.Types
+  ( Widget
+  , Padding(..)
+  , padAll
+  , str
+  )
+import qualified Brick.Widgets.Dialog as D
+import qualified Brick.Widgets.Center as C
+import qualified Brick.AttrMap as A
+import Brick.Util (on, bg)
+import qualified Brick.Types as T
 
 data Choice = Red | Blue | Green
             deriving Show
 
-drawUI :: Dialog Choice -> [Widget]
+drawUI :: D.Dialog Choice -> [Widget]
 drawUI d = [ui]
     where
-        ui = renderDialog d $ hCenter $ padAll (Pad 1) $ str "This is the dialog body."
+        ui = D.renderDialog d $ C.hCenter $ padAll (Pad 1) $ str "This is the dialog body."
 
-appEvent :: Dialog Choice -> Event -> EventM (Next (Dialog Choice))
+appEvent :: D.Dialog Choice -> V.Event -> M.EventM (M.Next (D.Dialog Choice))
 appEvent d ev =
     case ev of
-        EvKey KEsc [] -> halt d
-        EvKey KEnter [] -> halt d
-        _ -> continue $ handleEvent ev d
+        V.EvKey V.KEsc [] -> M.halt d
+        V.EvKey V.KEnter [] -> M.halt d
+        _ -> M.continue $ T.handleEvent ev d
 
-initialState :: Dialog Choice
-initialState = dialog "dialog" (Just "Title") (Just (0, choices)) 50
+initialState :: D.Dialog Choice
+initialState = D.dialog "dialog" (Just "Title") (Just (0, choices)) 50
     where
         choices = [ ("Red", Red)
                   , ("Blue", Blue)
                   , ("Green", Green)
                   ]
 
-theMap :: AttrMap
-theMap = attrMap defAttr
-    [ (dialogAttr, white `on` blue)
-    , (buttonAttr, black `on` white)
-    , (buttonSelectedAttr, bg yellow)
+theMap :: A.AttrMap
+theMap = A.attrMap V.defAttr
+    [ (D.dialogAttr, V.white `on` V.blue)
+    , (D.buttonAttr, V.black `on` V.white)
+    , (D.buttonSelectedAttr, bg V.yellow)
     ]
 
-theApp :: App (Dialog Choice) Event
+theApp :: M.App (D.Dialog Choice) V.Event
 theApp =
-    App { appDraw = drawUI
-        , appChooseCursor = showFirstCursor
-        , appHandleEvent = appEvent
-        , appStartEvent = return
-        , appAttrMap = const theMap
-        , appMakeVtyEvent = id
-        }
+    M.App { M.appDraw = drawUI
+          , M.appChooseCursor = M.showFirstCursor
+          , M.appHandleEvent = appEvent
+          , M.appStartEvent = return
+          , M.appAttrMap = const theMap
+          , M.appMakeVtyEvent = id
+          }
 
 main :: IO ()
 main = do
-    d <- defaultMain theApp initialState
-    putStrLn $ "You chose: " <> show (dialogSelection d)
+    d <- M.defaultMain theApp initialState
+    putStrLn $ "You chose: " <> show (D.dialogSelection d)