diff options
Diffstat (limited to 'src/Haddock/Backends/Html.hs')
| -rw-r--r-- | src/Haddock/Backends/Html.hs | 69 |
1 files changed, 55 insertions, 14 deletions
diff --git a/src/Haddock/Backends/Html.hs b/src/Haddock/Backends/Html.hs index 410dd6b3..e0e12164 100644 --- a/src/Haddock/Backends/Html.hs +++ b/src/Haddock/Backends/Html.hs @@ -32,7 +32,7 @@ import Haddock.GhcUtils import qualified Haddock.Utils.Html as Html import Control.Exception ( bracket ) -import Control.Monad ( when, join ) +import Control.Monad ( when, unless, join ) import Data.Char ( toUpper ) import Data.List ( sortBy, groupBy ) import Data.Maybe @@ -480,10 +480,14 @@ ppHtmlIndex odir doctitle maybe_package maybe_html_help_format body << vanillaTable << ( simpleHeader doctitle maybe_contents_url Nothing maybe_source_url maybe_wiki_url </> - search_box </> index_html + index_html ) createDirectoryIfMissing True odir + + when split_indices $ + mapM_ (do_sub_index index) initialChars + writeFile (pathJoin [odir, indexHtmlFile]) (renderHtml html) -- Generate index and contents page for Html Help if requested @@ -494,19 +498,22 @@ ppHtmlIndex odir doctitle maybe_package maybe_html_help_format Just "devhelp" -> return () Just format -> fail ("The "++format++" format is not implemented") where - -- colspan 2, marginheight 5 - search_box :: HtmlTable - search_box = tda [colspan 2, thestyle "padding-top:5px;"] << search - where - search :: Html - search = form ! [strAttr "onsubmit" "full_search(); return false;", action ""] << ( - "Search: " - +++ input ! [identifier "searchbox", strAttr "onkeyup" "quick_search()"] - +++ " " +++ input ! [value "Search", thetype "submit"] - +++ " " +++ thespan ! [identifier "searchmsg"] << " ") - index_html = td << setTrClass (table ! [identifier "indexlist", cellpadding 0, cellspacing 5] << - aboves (map indexElt index)) + index_html + | split_indices = + tda [theclass "section1"] << + toHtml ("Index") </> + indexInitialLetterLinks + | otherwise = + td << setTrClass (table ! [identifier "indexlist", cellpadding 0, cellspacing 5] << + aboves (map indexElt index)) + + -- an arbitrary heuristic: + -- too large, and a single-page will be slow to load + -- too small, and we'll have lots of letter-indexes with only one + -- or two members in them, which seems inefficient or + -- unnecessarily hard to use. + split_indices = length index > 150 setTrClass :: Html -> Html setTrClass (Html xs) = Html $ map f xs @@ -515,6 +522,40 @@ ppHtmlIndex odir doctitle maybe_package maybe_html_help_format | map toUpper name == "TR" = HtmlTag name (theclass "indexrow":attrs) inner | otherwise = HtmlTag name attrs (setTrClass inner) f x = x + + indexInitialLetterLinks = + td << setTrClass (table ! [cellpadding 0, cellspacing 5] << + besides [ td << anchor ! [href (subIndexHtmlFile c)] << + toHtml [c] + | c <- initialChars + , any ((==c) . toUpper . head . fst) index ]) + + -- todo: what about names/operators that start with Unicode + -- characters? + -- Exports beginning with '_' can be listed near the end, + -- presumably they're not as important... but would be listed + -- with non-split index! + initialChars = [ 'A'..'Z' ] ++ ":!#$%&*+./<=>?@\\^|-~" ++ "_" + + do_sub_index this_ix c + = unless (null index_part) $ + writeFile (pathJoin [odir, subIndexHtmlFile c]) (renderHtml html) + where + html = header (documentCharacterEncoding +++ + thetitle (toHtml (doctitle ++ " (Index)")) +++ + styleSheet) +++ + body << vanillaTable << ( + simpleHeader doctitle maybe_contents_url Nothing + maybe_source_url maybe_wiki_url </> + indexInitialLetterLinks </> + tda [theclass "section1"] << + toHtml ("Index (" ++ c:")") </> + td << setTrClass (table ! [identifier "indexlist", cellpadding 0, cellspacing 5] << + aboves (map indexElt index_part) ) + ) + + index_part = [(n,stuff) | (n,stuff) <- this_ix, toUpper (head n) == c] + index :: [(String, Map GHC.Name [(Module,Bool)])] index = sortBy cmp (Map.toAscList full_index) |