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| {- | ||
| Copyright (C) 2009 John MacFarlane <jgm@berkeley.edu> | ||
| This program is free software; you can redistribute it and/or modify | ||
| it under the terms of the GNU General Public License as published by | ||
| the Free Software Foundation; either version 2 of the License, or | ||
| (at your option) any later version. | ||
| This program is distributed in the hope that it will be useful, | ||
| but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| GNU General Public License for more details. | ||
| You should have received a copy of the GNU General Public License | ||
| along with this program; if not, write to the Free Software | ||
| Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
| -} | ||
|
|
||
| {- Functions and data structures for wiki page layout. | ||
| -} | ||
|
|
||
| module Gitit.Layout ( PageLayout(..) | ||
| , Tab(..) | ||
| , defaultPageLayout | ||
| , formattedPage | ||
| ) | ||
| where | ||
| import HAppS.Server hiding (look, lookRead, lookCookieValue, mkCookie) | ||
| import Data.FileStore | ||
| import Gitit.HAppS | ||
| import Gitit.Framework | ||
| import Gitit.State | ||
| import Gitit.Util (orIfNull) | ||
| import Gitit.Export (exportFormats) | ||
| import Network.HTTP (urlEncodeVars) | ||
| import Codec.Binary.UTF8.String (encodeString) | ||
| import qualified Text.StringTemplate as T | ||
| import Text.XHtml hiding ( (</>), dir, method, password, rev ) | ||
| import Data.Maybe (isNothing, isJust, mapMaybe, fromJust) | ||
| import Data.List (isSuffixOf) | ||
| import Prelude hiding (catch) | ||
| import Control.Exception (throwIO, catch) | ||
| import Control.Monad.Trans (liftIO) | ||
|
|
||
| -- | Abstract representation of page layout (tabs, scripts, etc.) | ||
| data PageLayout = PageLayout | ||
| { pgTitle :: String | ||
| , pgScripts :: [String] | ||
| , pgShowPageTools :: Bool | ||
| , pgTabs :: [Tab] | ||
| , pgSelectedTab :: Tab | ||
| } | ||
|
|
||
| data Tab = ViewTab | EditTab | HistoryTab | DiscussTab | DiffTab deriving (Eq, Show) | ||
|
|
||
| defaultPageLayout :: PageLayout | ||
| defaultPageLayout = PageLayout | ||
| { pgTitle = "" | ||
| , pgScripts = [] | ||
| , pgShowPageTools = True | ||
| , pgTabs = [ViewTab, EditTab, HistoryTab, DiscussTab] | ||
| , pgSelectedTab = ViewTab | ||
| } | ||
|
|
||
| -- | Returns formatted page | ||
| formattedPage :: PageLayout -> String -> Params -> Html -> Web Response | ||
| formattedPage layout page params htmlContents = do | ||
| let rev = pRevision params | ||
| let path' = if isPage page then pathForPage page else page | ||
| fs <- getFileStore | ||
| sha1 <- case rev of | ||
| Nothing -> liftIO $ catch (latest fs path') | ||
| (\e -> if e == NotFound | ||
| then return "" | ||
| else throwIO e) | ||
| Just r -> return r | ||
| user <- getLoggedInUser params | ||
| let javascriptlinks = if null (pgScripts layout) | ||
| then "" | ||
| else renderHtmlFragment $ concatHtml $ map | ||
| (\x -> script ! [src ("/js/" ++ x), thetype "text/javascript"] << noHtml) | ||
| (["jquery.min.js", "jquery-ui.packed.js"] ++ pgScripts layout) | ||
| let pageTitle = pgTitle layout `orIfNull` page | ||
| let tabli tab = if tab == pgSelectedTab layout | ||
| then li ! [theclass "selected"] | ||
| else li | ||
| let origPage s = if ":discuss" `isSuffixOf` s then take (length s - 8) s else s | ||
| let linkForTab HistoryTab = Just $ tabli HistoryTab << anchor ! [href $ urlForPage page ++ "?history" ++ | ||
| case rev of { Just r -> "&revision" ++ r; Nothing -> "" }] << "history" | ||
| linkForTab DiffTab = Just $ tabli DiffTab << anchor ! [href ""] << "diff" | ||
| linkForTab ViewTab = if isDiscussPage page | ||
| then Just $ tabli DiscussTab << anchor ! [href $ urlForPage $ origPage page] << "page" | ||
| else Just $ tabli ViewTab << anchor ! [href $ urlForPage page ++ | ||
| case rev of { Just r -> "?revision=" ++ r; Nothing -> "" }] << "view" | ||
| linkForTab DiscussTab = if isDiscussPage page | ||
| then Just $ tabli ViewTab << anchor ! [href $ urlForPage page] << "discuss" | ||
| else if isPage page | ||
| then Just $ tabli DiscussTab << anchor ! [href $ urlForPage page ++ "?discuss"] << "discuss" | ||
| else Nothing | ||
| linkForTab EditTab = if isPage page | ||
| then Just $ tabli EditTab << anchor ! [href $ urlForPage page ++ "?edit" ++ | ||
| (case rev of | ||
| Just r -> "&revision=" ++ r ++ "&" ++ urlEncodeVars [("logMsg", "Revert to " ++ r)] | ||
| Nothing -> "")] << | ||
| if isNothing rev then "edit" else "revert" | ||
| else Nothing | ||
| let tabs = ulist ! [theclass "tabs"] << mapMaybe linkForTab (pgTabs layout) | ||
| let searchbox = gui ("/_search") ! [identifier "searchform"] << | ||
| [ textfield "patterns" | ||
| , submit "search" "Search" ] | ||
| let gobox = gui ("/_go") ! [identifier "goform"] << | ||
| [ textfield "gotopage" | ||
| , submit "go" "Go" ] | ||
| let messages = pMessages params | ||
| let htmlMessages = if null messages | ||
| then noHtml | ||
| else ulist ! [theclass "messages"] << map (li <<) messages | ||
| templ <- queryAppState template | ||
| let filledTemp = T.render $ | ||
| T.setAttribute "pagetitle" pageTitle $ | ||
| T.setAttribute "javascripts" javascriptlinks $ | ||
| T.setAttribute "pagename" page $ | ||
| (case user of | ||
| Just u -> T.setAttribute "user" u | ||
| Nothing -> id) $ | ||
| (if isPage page then T.setAttribute "ispage" "true" else id) $ | ||
| (if pgShowPageTools layout then T.setAttribute "pagetools" "true" else id) $ | ||
| (if pPrintable params then T.setAttribute "printable" "true" else id) $ | ||
| (if isJust rev then T.setAttribute "nothead" "true" else id) $ | ||
| (if isJust rev then T.setAttribute "revision" (fromJust rev) else id) $ | ||
| T.setAttribute "sha1" sha1 $ | ||
| T.setAttribute "searchbox" (renderHtmlFragment (searchbox +++ gobox)) $ | ||
| T.setAttribute "exportbox" (renderHtmlFragment $ exportBox page params) $ | ||
| T.setAttribute "tabs" (renderHtmlFragment tabs) $ | ||
| T.setAttribute "messages" (renderHtmlFragment htmlMessages) $ | ||
| T.setAttribute "content" (renderHtmlFragment htmlContents) $ | ||
| templ | ||
| ok $ setContentType "text/html" $ toResponse $ encodeString filledTemp | ||
|
|
||
| exportBox :: String -> Params -> Html | ||
| exportBox page params | isPage page = | ||
| let rev = pRevision params | ||
| in gui (urlForPage page) ! [identifier "exportbox"] << | ||
| ([ textfield "revision" ! [thestyle "display: none;", value (fromJust rev)] | isJust rev ] ++ | ||
| [ select ! [name "format"] << | ||
| map ((\f -> option ! [value f] << f) . fst) exportFormats | ||
| , submit "export" "Export" ]) | ||
| exportBox _ _ = noHtml | ||
|
|
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