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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 | ||
-} | ||
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{- Functions and data structures for wiki page layout. | ||
-} | ||
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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) | ||
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-- | Abstract representation of page layout (tabs, scripts, etc.) | ||
data PageLayout = PageLayout | ||
{ pgTitle :: String | ||
, pgScripts :: [String] | ||
, pgShowPageTools :: Bool | ||
, pgTabs :: [Tab] | ||
, pgSelectedTab :: Tab | ||
} | ||
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data Tab = ViewTab | EditTab | HistoryTab | DiscussTab | DiffTab deriving (Eq, Show) | ||
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defaultPageLayout :: PageLayout | ||
defaultPageLayout = PageLayout | ||
{ pgTitle = "" | ||
, pgScripts = [] | ||
, pgShowPageTools = True | ||
, pgTabs = [ViewTab, EditTab, HistoryTab, DiscussTab] | ||
, pgSelectedTab = ViewTab | ||
} | ||
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-- | 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 | ||
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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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