git-annex/Assistant/WebApp/SideBar.hs
Joey Hess 4dbdc2b666 Assistant monad, stage 2.5
Converted several threads to run in the monad.

Added a lot of useful combinators for working with the monad.

Now the monad includes the name of the thread.

Some debugging messages are disabled pending converting other threads.
2012-10-29 02:21:04 -04:00

91 lines
2.8 KiB
Haskell

{- git-annex assistant webapp sidebar
-
- Copyright 2012 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU AGPL version 3 or higher.
-}
{-# LANGUAGE TypeFamilies, QuasiQuotes, MultiParamTypeClasses, TemplateHaskell, OverloadedStrings, RankNTypes #-}
module Assistant.WebApp.SideBar where
import Assistant.Common
import Assistant.WebApp
import Assistant.WebApp.Types
import Assistant.WebApp.Notifications
import Assistant.DaemonStatus
import Assistant.Alert
import Utility.NotificationBroadcaster
import Utility.Yesod
import Yesod
import Data.Text (Text)
import qualified Data.Map as M
import Control.Concurrent
sideBarDisplay :: Widget
sideBarDisplay = do
let content = do
{- Add newest alerts to the sidebar. -}
alertpairs <- lift $ M.toList . alertMap <$> getDaemonStatusY
mapM_ renderalert $
take displayAlerts $ reverse $ sortAlertPairs alertpairs
let ident = "sidebar"
$(widgetFile "sidebar/main")
autoUpdate ident NotifierSideBarR (10 :: Int) (10 :: Int)
where
bootstrapclass :: AlertClass -> Text
bootstrapclass Activity = "alert-info"
bootstrapclass Warning = "alert"
bootstrapclass Error = "alert-error"
bootstrapclass Success = "alert-success"
bootstrapclass Message = "alert-info"
renderalert (aid, alert) = do
let alertid = show aid
let closable = alertClosable alert
let block = alertBlockDisplay alert
let divclass = bootstrapclass $ alertClass alert
$(widgetFile "sidebar/alert")
{- Called by client to get a sidebar display.
-
- Returns a div, which will be inserted into the calling page.
-
- Note that the head of the widget is not included, only its
- body is. To get the widget head content, the widget is also
- inserted onto all pages.
-}
getSideBarR :: NotificationId -> Handler RepHtml
getSideBarR nid = do
waitNotifier alertNotifier nid
{- This 0.1 second delay avoids very transient notifications from
- being displayed and churning the sidebar unnecesarily.
-
- This needs to be below the level perceptable by the user,
- to avoid slowing down user actions like closing alerts. -}
liftIO $ threadDelay 100000
page <- widgetToPageContent sideBarDisplay
hamletToRepHtml $ [hamlet|^{pageBody page}|]
{- Called by the client to close an alert. -}
getCloseAlert :: AlertId -> Handler ()
getCloseAlert i = do
dstatus <- getAssistantY daemonStatusHandle
liftIO $ removeAlert dstatus i
{- When an alert with a button is clicked on, the button takes us here. -}
getClickAlert :: AlertId -> Handler ()
getClickAlert i = do
m <- alertMap <$> getDaemonStatusY
case M.lookup i m of
Just (Alert { alertButton = Just b }) -> do
{- Spawn a thread to run the action while redirecting. -}
case buttonAction b of
Nothing -> noop
Just a -> liftIO $ void $ forkIO $ a i
redirect $ buttonUrl b
_ -> redirectBack