{-# LANGUAGE OverloadedStrings, ScopedTypeVariables, DeriveDataTypeable, NoMonomorphismRestriction #-} module Main where import MFlow.Wai.Blaze.Html.All import Text.Blaze.Html5 as El import Text.Blaze.Html5.Attributes as At hiding (step) import Data.String import Data.List import Data.TCache import Data.Typeable import Control.Monad.Trans import Control.Concurrent import Control.Exception as E import qualified Data.ByteString.Lazy.Char8 as B import qualified Data.Text as T import qualified Data.Vector as V import Data.Maybe import Data.Monoid --test= runTest [(15,"shop")] main= do setAdminUser "admin" "admin" syncWrite SyncManual setFilesPath "" addFileServerWF addMessageFlows [("" ,transient $ runFlow mainmenu) ,("shop" ,runFlow shopCart)] wait $ run 80 waiMessageFlow -- adminLoop stdheader c= docTypeHtml << El.head << body << (p << text "You can press the back button" <> c) data Options= CountI | CountS | Radio | Login | TextEdit |Grid | Autocomp | AutocompList | ListEdit |Shop | Action | Ajax | Select | CheckBoxes deriving (Bounded, Enum,Read, Show,Typeable) mainmenu= do setHeader stdheader setTimeouts 100 0 r <- ask $ wcached "menu" 0 $ br ++> wlink CountI (b << text "increase an Int") <|> br ++> wlink CountS (b << text "increase a String") <|> br ++> wlink Action (b << text "Example of action, executed when a widget is validated") <|> br ++> wlink Select (b << text "select options") <|> br ++> wlink CheckBoxes (b << text "checkboxes") <|> br ++> wlink Radio (b << text "Radio buttons") <++ br <> br <> b << text "DYNAMIC WIDGETS" <|> br ++> wlink Ajax (b << text "AJAX example") <|> br ++> wlink Autocomp (b << text "autocomplete") <|> br ++> wlink AutocompList (b << text "autocomplete List") <|> br ++> wlink ListEdit (b << text "list edition") <|> br ++> wlink Grid (b << text "grid") <|> br ++> wlink TextEdit (b << text "Content Management") <++ br <> br <> b << text "STATEFUL PERSISTENT FLOW" <> br <> a ! href "shop" << text "shopping" -- ordinary Blaze.Html link <> br <> br <> b << text "OTHERS" <|> br ++> wlink Shop (b << text "Example of server-side redirection to another flow (shopping)") <|> br ++> wlink Login (b << text "login/logout") case r of CountI -> clickn 0 CountS -> clicks "1" Action -> actions 1 Ajax -> ajaxsample Select -> options CheckBoxes -> checkBoxes TextEdit -> textEdit Grid -> grid Autocomp -> autocomplete1 AutocompList -> autocompList ListEdit -> wlistEd Radio -> radio Login -> login Shop -> transfer "shop" options= do r <- ask $ getSelect (setSelectedOption ("" :: String) (p << text "select a option") <|> setOption "blue" (b << text "blue") <|> setOption "Red" (b << text "red") ) wlink () (p << text " menu") mainmenu -- breturn() would do it as well where dosummit= [("onchange","this.form.submit()")] checkBoxes= do r <- ask $ getCheckBoxes( (setCheckBox False "Red" <++ b << text "red") <> (setCheckBox False "Green" <++ b << text "green") <> (setCheckBox False "blue" <++ b << text "blue")) <** submitButton "submit" ask $ p << ( show r ++ " selected") ++> wlink () (p << text " menu") mainmenu autocomplete1= do r <- ask $ wautocomplete (Just "red,green,blue") filter1 <** submitButton "submit" ask $ p << ( show r ++ " selected") ++> wlink () (p << text " menu") mainmenu where filter1 s = return $ filter (isPrefixOf s) ["red","reed rose","green","green grass","blue","blues"] autocompList= do r <- ask $ wautocompleteList "red,green,blue" filter1 ["red"] <** submitButton "submit" ask $ p << ( show r ++ " selected") ++> wlink () (p << text " menu") mainmenu where filter1 s = return $ filter (isPrefixOf s) ["red","reed rose","green","green grass","blue","blues"] grid = do let row _= tr <<< ( (,) <$> tdborder <<< getInt (Just 0) <*> tdborder <<< getString (Just "text") <++ tdborder << delLink) addLink= a ! href "#" ! At.id "wEditListAdd" << text "add" delLink= a ! href "#" ! onclick "this.parentNode.parentNode.parentNode.removeChild(this.parentNode.parentNode)" << text "delete" tdborder= td ! At.style "border: solid 1px" r <- ask $ addLink ++> ( wEditList table row ["",""]) <** submitButton "submit" ask $ p << (show r ++ " returned") ++> wlink () (p << text " back to menu") mainmenu wlistEd= do r <- ask $ addLink ++> br ++> (El.div `wEditList` getString1 $ ["hi", "how are you"]) <++ br <** submitButton "send" ask $ p << (show r ++ " returned") ++> wlink () (p << text " back to menu") mainmenu where addLink = a ! At.id "wEditListAdd" ! href "#" $ text "add" delBox = input ! type_ "checkbox" ! checked "" ! onclick "this.parentNode.parentNode.removeChild(this.parentNode)" getString1 mx= El.div <<< delBox ++> getString mx <++ br clickn (n :: Int)= do setHeader stdheader r <- ask $ wlink ("menu" :: String) (p << text "menu") |+| getInt (Just n) <* submitButton "submit" case r of (Just _,_) -> mainmenu (_, Just n') -> clickn $ n'+1 clicks s= do setHeader stdheader s' <- ask $ (getString (Just s) <* submitButton "submit") `validate` (\s -> return $ if length s > 5 then Just "length must be < 5" else Nothing ) clicks $ s'++ "1" radio = do r <- ask $ getRadio [\n -> fromStr v ++> setRadioActive v n | v <- ["red","green","blue"]] ask $ p << ( show r ++ " selected") ++> wlink () (p << text " menu") mainmenu -- --askr :: (Read a,Show a,FormInput v,MonadIO m) -- => String -> a -> (a -> View v m b) -> FlowM v m b --askr id param w = do -- let key= addrStr w -- w'= do -- env <- getEnv -- let link= "param="++show param -- requires[JScript $ "document.getElementById('"++id++"').outerHtml="] -- let par = fromMaybe param $ fmap read $ lookup "param" env -- w par -- ---- liftIO $ addMessageFlows [(key, wstateless w')] -- ask w' ajaxsample= do r <- ask $ do let elemval= "document.getElementById('text1').value" ajaxc <- ajax $ \n -> return $ elemval <> "='" <> B.pack(show(read n +1)) <> "'" b << text "click the box" ++> getInt (Just 0) wlink () (p << text " menu") mainmenu --actions n=do -- ask $ wlink () (p << text "exit from action") -- <**((getInt (Just (n+1)) <** submitButton "submit" ) `waction` actions ) actions n= do r<- ask $ (getString $ Just "widget1") `waction` action <+> (getString $ Just "widget2") `waction` action <** submitButton "submit" ask $ p << ( show r ++ " returned") ++> wlink () (p << text " menu") mainmenu where action n= ask $ getString (Just $ n ++ " action")<** submitButton "submit action" data ShopOptions= IPhone | IPod | IPad deriving (Bounded, Enum,Read, Show, Typeable) shopCart = do setHeader $ \html -> El.span << text "A persistent flow (uses step). The process is killed after 10 seconds of inactivity \ \but it is restarted automatically. Event If you restart the whole server, it remember the shopping cart\n\n \ \Defines a table with links enclosed that return ints and a link to the menu, that abandon this flow.\n\ \The cart state is not stored, Only the history of events is saved. The cart is recreated by running the history of events." <> html setTimeouts 10 0 shopCart1 (V.fromList [0,0,0:: Int]) where shopCart1 cart= do o <- step . ask $ table ! At.style "border:1;width:20%;margin-left:auto;margin-right:auto" <<< caption << text "choose an item" ++> thead << tr << ( th << b << text "item" <> th << b << text "times chosen") ++> (tbody <<< tr ! rowspan "2" << td << linkHome ++> (tr <<< td <<< wlink IPhone (b << text "iphone") <++ td << ( b << text (fromString $ show ( cart V.! 0))) <|> tr <<< td <<< wlink IPod (b << text "ipad") <++ td << ( b << text (fromString $ show ( cart V.! 1))) <|> tr <<< td <<< wlink IPad (b << text "ipod") <++ td << ( b << text (fromString $ show ( cart V.! 2)))) <++ tr << td << linkHome ) let i =fromEnum o let newCart= cart V.// [(i, cart V.! i + 1 )] shopCart1 newCart where linkHome= a ! href (fromString noScript) << b << text "home" login= do ask $ p << text "Please login with admin/admin" ++> userWidget (Just "admin") userLogin user <- getCurrentUser ask $ b << text ("user logged as " <> T.pack user) ++> wlink () (p << text " logout and go to menu") logout mainmenu -- an example of content management textEdit= do setHeader $ \t -> html << body << t let first= p << i << (El.span << text "this is a page with" <> b << text " two " <> El.span << text "paragraphs") second= p << i << text "This is the original text of the second paragraph" pageEditable = (tFieldEd "first" first) **> (tFieldEd "second" second) ask $ first ++> second ++> wlink () (p << text "click here to edit it") ask $ p << text "Please login with admin/admin to edit it" ++> userWidget (Just "admin") userLogin ask $ p << text "now you can click the field and edit them" ++> p << b << text "to save the edited field, double click on it" ++> pageEditable **> wlink () (p << text "click here to see it as a normal user") logout ask $ p << text "the user sees the edited content. He can not edit" ++> pageEditable **> wlink () (p << text "click to continue") ask $ p << text "When text are fixed,the edit facility and the original texts can be removed. The content is indexed by the field key" ++> tField "first" **> tField "second" **> p << text "End of edit field demo" ++> wlink () (p << text "click here to go to menu")