Widgets should have an interface for templates

Move shakespeare specific stuff to Yesod.Shakespeare
I have not bothered to make Yesod.Shakespeare compile yet

The dependency chain is now

Yesod.Core -> Yesod.Widget -> Yesod.Shakespeare

yesod-core/Yesod/Core/Types.hs

@@ -298,6 +298,7 @@ data Stylesheet url = Stylesheet { styleLocation :: Location url, styleAttribute
 newtype Title = Title { unTitle :: Html }
 
 type CssBuilderUrl a = (a -> [(Text, Text)] -> Text) -> TBuilder.Builder
+type BuilderUrl url = (url -> [(Text, Text)] -> Text) -> TBuilder.Builder
 
 data HandlerContents =
       HCContent H.Status !TypedContent

yesod-core/Yesod/Core/Widget.hs

@@ -20,11 +20,6 @@ module Yesod.Core.Widget
     ( -- * Datatype
       WidgetT(..)
     , PageContent (..)
-      -- * Special Hamlet quasiquoter/TH for Widgets
-    , whamlet
-    , whamletFile
-    , ihamletToRepHtml
-    , ihamletToHtml
       -- * Convert to Widget
     , ToWidget (..)
     , ToWidgetHead (..)
@@ -33,7 +28,6 @@ module Yesod.Core.Widget
       -- * Creating
       -- ** Head of page
     , setTitle
-    , setTitleI
       -- ** CSS
     , addStylesheet
     , addStylesheetAttrs
@@ -51,7 +45,6 @@ module Yesod.Core.Widget
     , widgetToParentWidget
     , handlerToWidget
       -- * Internal
-    , whamletFileWithSettings
     , asWidgetT
 
       -- * Formerly Yesod.Core.Types
@@ -61,30 +54,16 @@ module Yesod.Core.Widget
     , Head(..)
     , Body(..)
 
-      -- * Formerly Yesod.Core.Class.Yesod
-    , jelper
-    , asyncHelper
-    , jsToHtml
-
       -- * Formerly Yesod.Core.Class.Handler
 
       -- * Formerly Yesod.Core.Handler
       -- ** Streaming
     , sendChunkHtml
-      -- ** Redirecting
-    , redirectToPost
-      -- ** Errors
-    , permissionDeniedI
-    , invalidArgsI
-    , unauthorizedI
       -- ** Messages
     , setMessage
-    , setMessageI
     , getMessage
       -- ** Hamlet
     , hamletToRepHtml
-      -- * i18n
-    , getMessageRender
 
       -- * Formerly Yesod.Core.Json
     -- FIXME
@@ -128,22 +107,16 @@ import Data.Monoid
 import Data.Semigroup (Semigroup)
 import qualified Data.Text                          as T
 import qualified Text.Blaze.Html.Renderer.Text as RenderText
-import           Text.Blaze.Html               (preEscapedToMarkup, toHtml)
+import           Text.Blaze.Html               (preEscapedToMarkup, toHtml, Html)
 import qualified Text.Blaze.Html5 as H
 import Text.Blaze.Html.Renderer.Utf8 (renderHtmlBuilder)
-import Text.Hamlet
-import Text.Cassius
-import Text.Julius
-import Text.Shakespeare.I18N (renderMessage)
 import Yesod.Routes.Class
 import Control.Monad.IO.Class (MonadIO, liftIO)
-import Text.Shakespeare.I18N (RenderMessage)
 import Data.Text (Text)
 import qualified Data.Map as Map
 import Language.Haskell.TH.Quote (QuasiQuoter)
 import Language.Haskell.TH.Syntax (Q, Exp (InfixE, VarE, LamE, AppE), Pat (VarP), newName)
 
-import qualified Text.Hamlet as NP
 import Data.Text.Lazy.Builder (fromLazyText, toLazyText)
 import           System.Log.FastLogger              (toLogStr)
 import qualified Data.Text.Lazy as TL
@@ -157,6 +130,17 @@ import Yesod.Core.Content (ToContent(..), ToTypedContent(..), HasContentType(..)
 import           Data.Map                           (Map, unionWith)
 import qualified Data.Aeson as J
 
+-- templating types
+class ToWidgetBuilder a where
+  toWidgetBuilder :: a -> Builder
+
+type Render url = url -> [(Text, Text)] -> Text
+type Translate msg = msg -> Html
+type HtmlUrl url = Render url -> Html
+type HtmlUrlI18n msg url = Translate msg -> Render url -> Html
+
+
+
 ------------------------------------
 -- Original Yesod.Core.Widget
 ------------------------------------
@@ -168,18 +152,10 @@ class ToWidget site a where
 
 instance render ~ RY site => ToWidget site (render -> Html) where
     toWidget x = tell $ GWData (Body x) mempty mempty mempty mempty mempty mempty
-instance render ~ RY site => ToWidget site (render -> Css) where
-    toWidget x = toWidget $ CssBuilder . fromLazyText . renderCss . x
-instance ToWidget site Css where
-    toWidget x = toWidget $ CssBuilder . fromLazyText . renderCss . const x
 instance render ~ RY site => ToWidget site (render -> CssBuilder) where
     toWidget x = tell $ GWData mempty mempty mempty mempty (Map.singleton Nothing $ unCssBuilder . x) mempty mempty
 instance ToWidget site CssBuilder where
     toWidget x = tell $ GWData mempty mempty mempty mempty (Map.singleton Nothing $ unCssBuilder . const x) mempty mempty
-instance render ~ RY site => ToWidget site (render -> Javascript) where
-    toWidget x = tell $ GWData mempty mempty mempty mempty mempty (Just x) mempty
-instance ToWidget site Javascript where
-    toWidget x = tell $ GWData mempty mempty mempty mempty mempty (Just $ const x) mempty
 instance (site' ~ site, IO ~ m, a ~ ()) => ToWidget site' (WidgetT site m a) where
     toWidget = liftWidgetT
 instance ToWidget site Html where
@@ -196,10 +172,6 @@ class ToWidgetMedia site a where
                   => Text -- ^ media value
                   -> a
                   -> m ()
-instance render ~ RY site => ToWidgetMedia site (render -> Css) where
-    toWidgetMedia media x = toWidgetMedia media $ CssBuilder . fromLazyText . renderCss . x
-instance ToWidgetMedia site Css where
-    toWidgetMedia media x = toWidgetMedia media $ CssBuilder . fromLazyText . renderCss . const x
 instance render ~ RY site => ToWidgetMedia site (render -> CssBuilder) where
     toWidgetMedia media x = tell $ GWData mempty mempty mempty mempty (Map.singleton (Just media) $ unCssBuilder . x) mempty mempty
 instance ToWidgetMedia site CssBuilder where
@@ -210,10 +182,6 @@ class ToWidgetBody site a where
 
 instance render ~ RY site => ToWidgetBody site (render -> Html) where
     toWidgetBody = toWidget
-instance render ~ RY site => ToWidgetBody site (render -> Javascript) where
-    toWidgetBody j = toWidget $ \r -> H.script $ preEscapedLazyText $ renderJavascriptUrl r j
-instance ToWidgetBody site Javascript where
-    toWidgetBody j = toWidget $ \_ -> H.script $ preEscapedLazyText $ renderJavascript j
 instance ToWidgetBody site Html where
     toWidgetBody = toWidget
 
@@ -222,33 +190,12 @@ class ToWidgetHead site a where
 
 instance render ~ RY site => ToWidgetHead site (render -> Html) where
     toWidgetHead = tell . GWData mempty mempty mempty mempty mempty mempty . Head
-instance render ~ RY site => ToWidgetHead site (render -> Css) where
-    toWidgetHead = toWidget
-instance ToWidgetHead site Css where
-    toWidgetHead = toWidget
-instance render ~ RY site => ToWidgetHead site (render -> CssBuilder) where
-    toWidgetHead = toWidget
-instance ToWidgetHead site CssBuilder where
-    toWidgetHead = toWidget
-instance render ~ RY site => ToWidgetHead site (render -> Javascript) where
-    toWidgetHead j = toWidgetHead $ \r -> H.script $ preEscapedLazyText $ renderJavascriptUrl r j
-instance ToWidgetHead site Javascript where
-    toWidgetHead j = toWidgetHead $ \_ -> H.script $ preEscapedLazyText $ renderJavascript j
-instance ToWidgetHead site Html where
-    toWidgetHead = toWidgetHead . const
 
 -- | Set the page title. Calling 'setTitle' multiple times overrides previously
 -- set values.
 setTitle :: MonadWidget m => Html -> m ()
 setTitle x = tell $ GWData mempty (Last $ Just $ Title x) mempty mempty mempty mempty mempty
 
--- | Set the page title. Calling 'setTitle' multiple times overrides previously
--- set values.
-setTitleI :: (MonadWidget m, RenderMessage (HandlerSite m) msg) => msg -> m ()
-setTitleI msg = do
-    mr <- getMessageRender
-    setTitle $ toHtml $ mr msg
-
 -- | Link to the specified local stylesheet.
 addStylesheet :: MonadWidget m => Route (HandlerSite m) -> m ()
 addStylesheet = flip addStylesheetAttrs []
@@ -294,53 +241,6 @@ addScriptRemote = flip addScriptRemoteAttrs []
 addScriptRemoteAttrs :: MonadWidget m => Text -> [(Text, Text)] -> m ()
 addScriptRemoteAttrs x y = tell $ GWData mempty mempty (toUnique $ Script (Remote x) y) mempty mempty mempty mempty
 
-whamlet :: QuasiQuoter
-whamlet = NP.hamletWithSettings rules NP.defaultHamletSettings
-
-whamletFile :: FilePath -> Q Exp
-whamletFile = NP.hamletFileWithSettings rules NP.defaultHamletSettings
-
-whamletFileWithSettings :: NP.HamletSettings -> FilePath -> Q Exp
-whamletFileWithSettings = NP.hamletFileWithSettings rules
-
-asWidgetT :: WidgetT site m () -> WidgetT site m ()
-asWidgetT = id
-
-rules :: Q NP.HamletRules
-rules = do
-    ah <- [|asWidgetT . toWidget|]
-    let helper qg f = do
-            x <- newName "urender"
-            e <- f $ VarE x
-            let e' = LamE [VarP x] e
-            g <- qg
-            bind <- [|(>>=)|]
-            return $ InfixE (Just g) bind (Just e')
-    let ur f = do
-            let env = NP.Env
-                    (Just $ helper [|getUrlRenderParams|])
-                    (Just $ helper [|liftM (toHtml .) getMessageRender|])
-            f env
-    return $ NP.HamletRules ah ur $ \_ b -> return $ ah `AppE` b
-
--- | Wraps the 'Content' generated by 'hamletToContent' in a 'RepHtml'.
-ihamletToRepHtml :: (MonadHandler m, RenderMessage (HandlerSite m) message)
-                 => HtmlUrlI18n message (Route (HandlerSite m))
-                 -> m Html
-ihamletToRepHtml = ihamletToHtml
-{-# DEPRECATED ihamletToRepHtml "Please use ihamletToHtml instead" #-}
-
--- | Wraps the 'Content' generated by 'hamletToContent' in a 'RepHtml'.
---
--- Since 1.2.1
-ihamletToHtml :: (MonadHandler m, RenderMessage (HandlerSite m) message)
-              => HtmlUrlI18n message (Route (HandlerSite m))
-              -> m Html
-ihamletToHtml ih = do
-    urender <- getUrlRenderParams
-    mrender <- getMessageRender
-    return $ ih (toHtml . mrender) urender
-
 tell :: MonadWidget m => GWData (Route (HandlerSite m)) -> m ()
 tell w = liftWidgetT $ WidgetT $ const $ return ((), w)
 
@@ -396,7 +296,7 @@ data GWData a = GWData
     , gwdScripts     :: !(UniqueList (Script a))
     , gwdStylesheets :: !(UniqueList (Stylesheet a))
     , gwdCss         :: !(Map (Maybe Text) (CssBuilderUrl a)) -- media type
-    , gwdJavascript  :: !(Maybe (JavascriptUrl a))
+    , gwdJavascript  :: !(Maybe (BuilderUrl a))
     , gwdHead        :: !(Head a)
     }
 instance Monoid (GWData a) where
@@ -503,6 +403,10 @@ instance (a ~ (), Monad m) => Monoid (WidgetT site m a) where
     mappend x y = x >> y
 instance (a ~ (), Monad m) => Semigroup (WidgetT site m a)
 
+asWidgetT :: WidgetT site m () -> WidgetT site m ()
+asWidgetT = id
+
+
 -- | Content for a web page. By providing this datatype, we can easily create
 -- generic site templates, which would have the type signature:
 --
@@ -527,25 +431,13 @@ instance Semigroup (Body a)
 ------------------------------------
 instance ToContent Html where
     toContent bs = ContentBuilder (renderHtmlBuilder bs) Nothing
-instance ToContent Css where
-    toContent = toContent . renderCss
-instance ToContent Javascript where
-    toContent = toContent . toLazyText . unJavascript
 instance ToTypedContent Html where
     toTypedContent h = TypedContent typeHtml (toContent h)
 instance ToFlushBuilder (Flush Html) where toFlushBuilder = fmap renderHtmlBuilder
 instance ToFlushBuilder Html where toFlushBuilder = Chunk . renderHtmlBuilder
-instance ToTypedContent Css where
-    toTypedContent = TypedContent typeCss . toContent
-instance ToTypedContent Javascript where
-    toTypedContent = TypedContent typeJavascript . toContent
 
 instance HasContentType Html where
     getContentType _ = typeHtml
-instance HasContentType Css where
-    getContentType _ = typeCss
-instance HasContentType Javascript where
-    getContentType _ = typeJavascript
 
 ------------------------------------
 -- Formerly Yesod.Core.Class.Handler
@@ -593,15 +485,6 @@ msgKey = T.pack "_MSG"
 setMessage :: MonadHandler m => Html -> m ()
 setMessage = setSession msgKey . T.concat . TL.toChunks . RenderText.renderHtml
 
--- | Sets a message in the user's session.
---
--- See 'getMessage'.
-setMessageI :: (MonadHandler m, RenderMessage (HandlerSite m) msg)
-            => msg -> m ()
-setMessageI msg = do
-    mr <- getMessageRender
-    setMessage $ toHtml $ mr msg
-
 -- | Gets the message in the user's session, if available, and then clears the
 -- variable.
 --
@@ -612,58 +495,11 @@ getMessage = do
     deleteSession msgKey
     return mmsg
 
--- | Return a 403 permission denied page.
-permissionDeniedI :: (RenderMessage (HandlerSite m) msg, MonadHandler m)
-                  => msg
-                  -> m a
-permissionDeniedI msg = do
-    mr <- getMessageRender
-    permissionDenied $ mr msg
-
--- | Return a 400 invalid arguments page.
-invalidArgsI :: (MonadHandler m, RenderMessage (HandlerSite m) msg) => [msg] -> m a
-invalidArgsI msg = do
-    mr <- getMessageRender
-    invalidArgs $ map mr msg
-
--- | Redirect to a POST resource.
---
--- This is not technically a redirect; instead, it returns an HTML page with a
--- POST form, and some Javascript to automatically submit the form. This can be
--- useful when you need to post a plain link somewhere that needs to cause
--- changes on the server.
-redirectToPost :: (MonadHandler m, RedirectUrl (HandlerSite m) url)
-               => url
-               -> m a
-redirectToPost url = do
-    urlText <- toTextUrl url
-    withUrlRenderer [hamlet|
-$newline never
-$doctype 5
-
-<html>
-    <head>
-        <title>Redirecting...
-    <body onload="document.getElementById('form').submit()">
-        <form id="form" method="post" action=#{urlText}>
-            <noscript>
-                <p>Javascript has been disabled; please click on the button below to be redirected.
-            <input type="submit" value="Continue">
-|] >>= sendResponse
-
-
 -- | Wraps the 'Content' generated by 'hamletToContent' in a 'RepHtml'.
 hamletToRepHtml :: MonadHandler m => HtmlUrl (Route (HandlerSite m)) -> m Html
 hamletToRepHtml = withUrlRenderer
 {-# DEPRECATED hamletToRepHtml "Use withUrlRenderer instead" #-}
 
-getMessageRender :: (MonadHandler m, RenderMessage (HandlerSite m) message)
-                 => m (message -> Text)
-getMessageRender = do
-    site <- getYesod
-    l <- reqLangs `liftM` getRequest
-    return $ renderMessage site l
-
 -- | Type-specialized version of 'sendChunk' for @Html@s.
 --
 -- Since 1.2.0
@@ -671,162 +507,6 @@ sendChunkHtml :: Monad m => Html -> Producer m (Flush Builder)
 sendChunkHtml = sendChunk
 
 
-------------------------------
--- from Yesod.Core.Class.Yesod
-------------------------------
-type AddStaticContent site = Text -- ^ filename extension
-                           -> Text -- ^ mime-type
-                           -> L.ByteString -- ^ content
-                           -> HandlerT site IO (Maybe (Either Text (Route site, [(Text, Text)])))
-
--- | Convert a widget to a 'PageContent'.
--- not bound to the Yesod typeclass
-{- widgetToPageContentUnbound
-  :: (MonadBaseControl IO m, MonadThrow m, MonadIO m, Eq (Route site))
-  => AddStaticContent site -> site -> ScriptLoadPosition site -> WidgetT site IO ()
-  -> HandlerT site m (PageContent (Route site))
-  -}
-widgetToPageContentUnbound addStaticContent jsLoader w = do
-    master <- getYesod
-    hd <- HandlerT return
-    ((), GWData (Body body) (Last mTitle) scripts' stylesheets' style jscript (Head head')) <- lift $ unWidgetT w hd
-    let title = maybe mempty unTitle mTitle
-        scripts = runUniqueList scripts'
-        stylesheets = runUniqueList stylesheets'
-
-    render <- getUrlRenderParams
-    let renderLoc x =
-            case x of
-                Nothing -> Nothing
-                Just (Left s) -> Just s
-                Just (Right (u, p)) -> Just $ render u p
-    css <- forM (Map.toList style) $ \(mmedia, content) -> do
-        let rendered = toLazyText $ content render
-        x <- addStaticContent "css" "text/css; charset=utf-8"
-           $ encodeUtf8 rendered
-        return (mmedia,
-            case x of
-                Nothing -> Left $ preEscapedToMarkup rendered
-                Just y -> Right $ either id (uncurry render) y)
-    jsLoc <-
-        case jscript of
-            Nothing -> return Nothing
-            Just s -> do
-                x <- addStaticContent "js" "text/javascript; charset=utf-8"
-                   $ encodeUtf8 $ renderJavascriptUrl render s
-                return $ renderLoc x
-
-    -- modernizr should be at the end of the <head> http://www.modernizr.com/docs/#installing
-    -- the asynchronous loader means your page doesn't have to wait for all the js to load
-    let (mcomplete, asyncScripts) = asyncHelper render scripts jscript jsLoc
-        regularScriptLoad = [hamlet|
-            $newline never
-            $forall s <- scripts
-                ^{mkScriptTag s}
-            $maybe j <- jscript
-                $maybe s <- jsLoc
-                    <script src="#{s}">
-                $nothing
-                    <script>^{jelper j}
-        |]
-
-        headAll = [hamlet|
-            $newline never
-            \^{head'}
-            $forall s <- stylesheets
-                ^{mkLinkTag s}
-            $forall s <- css
-                $maybe t <- right $ snd s
-                    $maybe media <- fst s
-                        <link rel=stylesheet media=#{media} href=#{t}>
-                    $nothing
-                        <link rel=stylesheet href=#{t}>
-                $maybe content <- left $ snd s
-                    $maybe media <- fst s
-                        <style media=#{media}>#{content}
-                    $nothing
-                        <style>#{content}
-            $case jsLoader master
-              $of BottomOfBody
-              $of BottomOfHeadAsync asyncJsLoader
-                  ^{asyncJsLoader asyncScripts mcomplete}
-              $of BottomOfHeadBlocking
-                  ^{regularScriptLoad}
-        |]
-    let bodyScript = [hamlet|
-            $newline never
-            ^{body}
-            ^{regularScriptLoad}
-        |]
-
-    return $ PageContent title headAll $
-        case jsLoader master of
-            BottomOfBody -> bodyScript
-            _ -> body
-  where
-    renderLoc' render' (Local url) = render' url []
-    renderLoc' _ (Remote s) = s
-
-    addAttr x (y, z) = x H.! H.customAttribute (H.textTag y) (H.toValue z)
-    mkScriptTag (Script loc attrs) render' =
-        foldl' addAttr H.script (("src", renderLoc' render' loc) : attrs) $ return ()
-    mkLinkTag (Stylesheet loc attrs) render' =
-        foldl' addAttr H.link
-            ( ("rel", "stylesheet")
-            : ("href", renderLoc' render' loc)
-            : attrs
-            )
-
-    runUniqueList :: Eq x => UniqueList x -> [x]
-    runUniqueList (UniqueList x) = nub $ x []
-
-asyncHelper :: (url -> [x] -> Text)
-         -> [Script (url)]
-         -> Maybe (JavascriptUrl (url))
-         -> Maybe Text
-         -> (Maybe (HtmlUrl url), [Text])
-asyncHelper render scripts jscript jsLoc =
-    (mcomplete, scripts'')
-  where
-    scripts' = map goScript scripts
-    scripts'' =
-        case jsLoc of
-            Just s -> scripts' ++ [s]
-            Nothing -> scripts'
-    goScript (Script (Local url) _) = render url []
-    goScript (Script (Remote s) _) = s
-    mcomplete =
-        case jsLoc of
-            Just{} -> Nothing
-            Nothing ->
-                case jscript of
-                    Nothing -> Nothing
-                    Just j -> Just $ jelper j
-
-jsToHtml :: Javascript -> Html
-jsToHtml (Javascript b) = preEscapedToMarkup $ toLazyText b
-
-jelper :: JavascriptUrl url -> HtmlUrl url
-jelper = fmap jsToHtml
-
-right :: Either a b -> Maybe b
-right (Right x) = Just x
-right _ = Nothing
-
-left :: Either a b -> Maybe a
-left (Left x) = Just x
-left _ = Nothing
-
-
------------------------------
--- originally from Yesod.Core
------------------------------
--- | Return an 'Unauthorized' value, with the given i18n message.
-unauthorizedI :: (MonadHandler m, RenderMessage (HandlerSite m) msg) => msg -> m AuthResult
-unauthorizedI msg = do
-    mr <- getMessageRender
-    return $ Unauthorized $ mr msg
-
 -----------------------------
 -- originally from Yesod.Core.Json
 -----------------------------
@@ -835,7 +515,7 @@ unauthorizedI msg = do
 -- ('defaultLayout').
 --
 -- /Since: 0.3.0/
-{-
+{- FIXME
 defaultLayoutJson :: (Yesod site, J.ToJSON a)
                   => WidgetT site IO ()  -- ^ HTML
                   -> HandlerT site IO a  -- ^ JSON

yesod-core/Yesod/Shakespeare.hs

@@ -0,0 +1,365 @@
+module Yesod.Shakespeare (
+    , whamlet
+    , whamletFile
+      -- * Special Hamlet quasiquoter/TH for Widgets
+    , ihamletToRepHtml
+    , ihamletToHtml
+      -- * Internal
+    , whamletFileWithSettings
+      -- * Creating
+      -- ** Head of page
+    , setTitleI
+      -- ** Errors
+    , permissionDeniedI
+    , invalidArgsI
+    , unauthorizedI
+      -- ** Messages
+    , setMessageI
+      -- * i18n
+    , getMessageRender
+
+      -- * Formerly Yesod.Core.Class.Yesod
+    , jelper
+    , asyncHelper
+    , jsToHtml
+      -- * Formerly Yesod.Core.Handler
+      -- ** Redirecting
+    , redirectToPost
+
+      -- * Shakespeare
+      -- ** Hamlet
+    , hamlet
+    , shamlet
+    , xhamlet
+    , HtmlUrl
+      -- ** Julius
+    , julius
+    , JavascriptUrl
+    , renderJavascriptUrl
+      -- ** Cassius/Lucius
+    , cassius
+    , lucius
+    , CssUrl
+    , renderCssUrl
+) where
+
+import Yesod.Core.Widget
+import Text.Shakespeare.I18N
+
+instance ToWidgetBuilder Javascript where
+  toWidgetBuilder = unJavascript
+
+whamlet :: QuasiQuoter
+whamlet = NP.hamletWithSettings rules NP.defaultHamletSettings
+
+whamletFile :: FilePath -> Q Exp
+whamletFile = NP.hamletFileWithSettings rules NP.defaultHamletSettings
+
+whamletFileWithSettings :: NP.HamletSettings -> FilePath -> Q Exp
+whamletFileWithSettings = NP.hamletFileWithSettings rules
+
+rules :: Q NP.HamletRules
+rules = do
+    ah <- [|asWidgetT . toWidget|]
+    let helper qg f = do
+            x <- newName "urender"
+            e <- f $ VarE x
+            let e' = LamE [VarP x] e
+            g <- qg
+            bind <- [|(>>=)|]
+            return $ InfixE (Just g) bind (Just e')
+    let ur f = do
+            let env = NP.Env
+                    (Just $ helper [|getUrlRenderParams|])
+                    (Just $ helper [|liftM (toHtml .) getMessageRender|])
+            f env
+    return $ NP.HamletRules ah ur $ \_ b -> return $ ah `AppE` b
+
+-- | Wraps the 'Content' generated by 'hamletToContent' in a 'RepHtml'.
+ihamletToRepHtml :: (MonadHandler m, RenderMessage (HandlerSite m) message)
+                 => HtmlUrlI18n message (Route (HandlerSite m))
+                 -> m Html
+ihamletToRepHtml = ihamletToHtml
+{-# DEPRECATED ihamletToRepHtml "Please use ihamletToHtml instead" #-}
+
+-- | Wraps the 'Content' generated by 'hamletToContent' in a 'RepHtml'.
+--
+-- Since 1.2.1
+ihamletToHtml :: (MonadHandler m, RenderMessage (HandlerSite m) message)
+              => HtmlUrlI18n message (Route (HandlerSite m))
+              -> m Html
+ihamletToHtml ih = do
+    urender <- getUrlRenderParams
+    mrender <- getMessageRender
+    return $ ih (toHtml . mrender) urender
+
+
+-- | Redirect to a POST resource.
+--
+-- This is not technically a redirect; instead, it returns an HTML page with a
+-- POST form, and some Javascript to automatically submit the form. This can be
+-- useful when you need to post a plain link somewhere that needs to cause
+-- changes on the server.
+redirectToPost :: (MonadHandler m, RedirectUrl (HandlerSite m) url)
+               => url
+               -> m a
+redirectToPost url = do
+    urlText <- toTextUrl url
+    withUrlRenderer [hamlet|
+$newline never
+$doctype 5
+
+<html>
+    <head>
+        <title>Redirecting...
+    <body onload="document.getElementById('form').submit()">
+        <form id="form" method="post" action=#{urlText}>
+            <noscript>
+                <p>Javascript has been disabled; please click on the button below to be redirected.
+            <input type="submit" value="Continue">
+|] >>= sendResponse
+
+------------------------------
+-- from Yesod.Core.Class.Yesod
+------------------------------
+type AddStaticContent site = Text -- ^ filename extension
+                           -> Text -- ^ mime-type
+                           -> L.ByteString -- ^ content
+                           -> HandlerT site IO (Maybe (Either Text (Route site, [(Text, Text)])))
+
+-- | Convert a widget to a 'PageContent'.
+-- not bound to the Yesod typeclass
+{- widgetToPageContentUnbound
+  :: (MonadBaseControl IO m, MonadThrow m, MonadIO m, Eq (Route site))
+  => AddStaticContent site -> site -> ScriptLoadPosition site -> WidgetT site IO ()
+  -> HandlerT site m (PageContent (Route site))
+  -}
+widgetToPageContentUnbound addStaticContent jsLoader w = do
+    master <- getYesod
+    hd <- HandlerT return
+    ((), GWData (Body body) (Last mTitle) scripts' stylesheets' style jscript (Head head')) <- lift $ unWidgetT w hd
+    let title = maybe mempty unTitle mTitle
+        scripts = runUniqueList scripts'
+        stylesheets = runUniqueList stylesheets'
+
+    render <- getUrlRenderParams
+    let renderLoc x =
+            case x of
+                Nothing -> Nothing
+                Just (Left s) -> Just s
+                Just (Right (u, p)) -> Just $ render u p
+    css <- forM (Map.toList style) $ \(mmedia, content) -> do
+        let rendered = toLazyText $ content render
+        x <- addStaticContent "css" "text/css; charset=utf-8"
+           $ encodeUtf8 rendered
+        return (mmedia,
+            case x of
+                Nothing -> Left $ preEscapedToMarkup rendered
+                Just y -> Right $ either id (uncurry render) y)
+    jsLoc <-
+        case jscript of
+            Nothing -> return Nothing
+            Just s -> do
+                x <- addStaticContent "js" "text/javascript; charset=utf-8"
+                   $ encodeUtf8 $ renderJavascriptUrl render s
+                return $ renderLoc x
+
+    -- modernizr should be at the end of the <head> http://www.modernizr.com/docs/#installing
+    -- the asynchronous loader means your page doesn't have to wait for all the js to load
+    let (mcomplete, asyncScripts) = asyncHelper render scripts jscript jsLoc
+        regularScriptLoad = [hamlet|
+            $newline never
+            $forall s <- scripts
+                ^{mkScriptTag s}
+            $maybe j <- jscript
+                $maybe s <- jsLoc
+                    <script src="#{s}">
+                $nothing
+                    <script>^{jelper j}
+        |]
+
+        headAll = [hamlet|
+            $newline never
+            \^{head'}
+            $forall s <- stylesheets
+                ^{mkLinkTag s}
+            $forall s <- css
+                $maybe t <- right $ snd s
+                    $maybe media <- fst s
+                        <link rel=stylesheet media=#{media} href=#{t}>
+                    $nothing
+                        <link rel=stylesheet href=#{t}>
+                $maybe content <- left $ snd s
+                    $maybe media <- fst s
+                        <style media=#{media}>#{content}
+                    $nothing
+                        <style>#{content}
+            $case jsLoader master
+              $of BottomOfBody
+              $of BottomOfHeadAsync asyncJsLoader
+                  ^{asyncJsLoader asyncScripts mcomplete}
+              $of BottomOfHeadBlocking
+                  ^{regularScriptLoad}
+        |]
+    let bodyScript = [hamlet|
+            $newline never
+            ^{body}
+            ^{regularScriptLoad}
+        |]
+
+    return $ PageContent title headAll $
+        case jsLoader master of
+            BottomOfBody -> bodyScript
+            _ -> body
+  where
+    renderLoc' render' (Local url) = render' url []
+    renderLoc' _ (Remote s) = s
+
+    addAttr x (y, z) = x H.! H.customAttribute (H.textTag y) (H.toValue z)
+    mkScriptTag (Script loc attrs) render' =
+        foldl' addAttr H.script (("src", renderLoc' render' loc) : attrs) $ return ()
+    mkLinkTag (Stylesheet loc attrs) render' =
+        foldl' addAttr H.link
+            ( ("rel", "stylesheet")
+            : ("href", renderLoc' render' loc)
+            : attrs
+            )
+
+    runUniqueList :: Eq x => UniqueList x -> [x]
+    runUniqueList (UniqueList x) = nub $ x []
+
+asyncHelper :: (url -> [x] -> Text)
+         -> [Script (url)]
+         -> Maybe (JavascriptUrl (url))
+         -> Maybe Text
+         -> (Maybe (HtmlUrl url), [Text])
+asyncHelper render scripts jscript jsLoc =
+    (mcomplete, scripts'')
+  where
+    scripts' = map goScript scripts
+    scripts'' =
+        case jsLoc of
+            Just s -> scripts' ++ [s]
+            Nothing -> scripts'
+    goScript (Script (Local url) _) = render url []
+    goScript (Script (Remote s) _) = s
+    mcomplete =
+        case jsLoc of
+            Just{} -> Nothing
+            Nothing ->
+                case jscript of
+                    Nothing -> Nothing
+                    Just j -> Just $ jelper j
+
+jsToHtml :: Javascript -> Html
+jsToHtml (Javascript b) = preEscapedToMarkup $ toLazyText b
+
+jelper :: JavascriptUrl url -> HtmlUrl url
+jelper = fmap jsToHtml
+
+right :: Either a b -> Maybe b
+right (Right x) = Just x
+right _ = Nothing
+
+left :: Either a b -> Maybe a
+left (Left x) = Just x
+left _ = Nothing
+
+------------------------------------
+-- Formerly Yesod.Core.Content
+------------------------------------
+instance ToContent Css where
+    toContent = toContent . renderCss
+instance ToContent Javascript where
+    toContent = toContent . toLazyText . unJavascript
+instance HasContentType Css where
+    getContentType _ = typeCss
+instance HasContentType Javascript where
+    getContentType _ = typeJavascript
+instance ToTypedContent Css where
+    toTypedContent = TypedContent typeCss . toContent
+instance ToTypedContent Javascript where
+    toTypedContent = TypedContent typeJavascript . toContent
+
+------------------------------------
+-- Formerly Yesod.Core.Widget
+------------------------------------
+instance render ~ RY site => ToWidget site (render -> Css) where
+    toWidget x = toWidget $ CssBuilder . fromLazyText . renderCss . x
+instance ToWidget site Css where
+    toWidget x = toWidget $ CssBuilder . fromLazyText . renderCss . const x
+instance render ~ RY site => ToWidget site (render -> Javascript) where
+    toWidget x = tell $ GWData mempty mempty mempty mempty mempty (Just x) mempty
+instance ToWidget site Javascript where
+    toWidget x = tell $ GWData mempty mempty mempty mempty mempty (Just $ const x) mempty
+instance render ~ RY site => ToWidgetMedia site (render -> Css) where
+    toWidgetMedia media x = toWidgetMedia media $ CssBuilder . fromLazyText . renderCss . x
+instance ToWidgetMedia site Css where
+    toWidgetMedia media x = toWidgetMedia media $ CssBuilder . fromLazyText . renderCss . const x
+instance render ~ RY site => ToWidgetHead site (render -> Css) where
+    toWidgetHead = toWidget
+instance render ~ RY site => ToWidgetHead site (render -> Javascript) where
+    toWidgetHead j = toWidgetHead $ \r -> H.script $ preEscapedLazyText $ renderJavascriptUrl r j
+instance ToWidgetHead site Javascript where
+    toWidgetHead j = toWidgetHead $ \_ -> H.script $ preEscapedLazyText $ renderJavascript j
+instance render ~ RY site => ToWidgetBody site (render -> Javascript) where
+    toWidgetBody j = toWidget $ \r -> H.script $ preEscapedLazyText $ renderJavascriptUrl r j
+instance ToWidgetBody site Javascript where
+    toWidgetBody j = toWidget $ \_ -> H.script $ preEscapedLazyText $ renderJavascript j
+instance ToWidgetHead site Html where
+    toWidgetHead = toWidgetHead . const
+instance ToWidgetHead site Css where
+    toWidgetHead = toWidget
+instance render ~ RY site => ToWidgetHead site (render -> CssBuilder) where
+    toWidgetHead = toWidget
+instance ToWidgetHead site CssBuilder where
+    toWidgetHead = toWidget
+
+-- | Set the page title. Calling 'setTitle' multiple times overrides previously
+-- set values.
+setTitleI :: (MonadWidget m, RenderMessage (HandlerSite m) msg) => msg -> m ()
+setTitleI msg = do
+    mr <- getMessageRender
+    setTitle $ toHtml $ mr msg
+
+
+-- | Sets a message in the user's session.
+--
+-- See 'getMessage'.
+setMessageI :: (MonadHandler m, RenderMessage (HandlerSite m) msg)
+            => msg -> m ()
+setMessageI msg = do
+    mr <- getMessageRender
+    setMessage $ toHtml $ mr msg
+
+-- | Return a 403 permission denied page.
+permissionDeniedI :: (RenderMessage (HandlerSite m) msg, MonadHandler m)
+                  => msg
+                  -> m a
+permissionDeniedI msg = do
+    mr <- getMessageRender
+    permissionDenied $ mr msg
+
+-- | Return a 400 invalid arguments page.
+invalidArgsI :: (MonadHandler m, RenderMessage (HandlerSite m) msg) => [msg] -> m a
+invalidArgsI msg = do
+    mr <- getMessageRender
+    invalidArgs $ map mr msg
+
+
+getMessageRender :: (MonadHandler m, RenderMessage (HandlerSite m) message)
+                 => m (message -> Text)
+getMessageRender = do
+    site <- getYesod
+    l <- reqLangs `liftM` getRequest
+    return $ renderMessage site l
+
+-----------------------------
+-- originally from Yesod.Core
+-----------------------------
+-- | Return an 'Unauthorized' value, with the given i18n message.
+unauthorizedI :: (MonadHandler m, RenderMessage (HandlerSite m) msg) => msg -> m AuthResult
+unauthorizedI msg = do
+    mr <- getMessageRender
+    return $ Unauthorized $ mr msg
+

yesod-core/yesod-core.cabal

@@ -30,7 +30,6 @@ library
                    , text                  >= 0.7
                    , template-haskell
                    , path-pieces           >= 0.1.2    && < 0.3
-                   , shakespeare           >= 2.0
                    , blaze-builder         >= 0.2.1.4  && < 0.5
                    , transformers          >= 0.2.2
                    , mtl