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module HTML.CategorizedList
(list2CategorizedHtml, categorizeByItemKey, stringList2ItemList)
where
import Char
import List
import HTML.Base
list2CategorizedHtml :: [(a,[HtmlExp])] -> [(b,String)] -> (a -> b -> Bool)
-> [HtmlExp]
list2CategorizedHtml itemL categoryL categoryFun =
categories2LinkList categoryL :
map (\ (categoryKey,categoryString) ->
anchor (string2urlencoded (show categoryKey))
(h2 [htxt categoryString] :
concatMap (\ (_,item)->item++[breakline])
(filter (\ (itemKey,_) ->
categoryFun itemKey categoryKey)
itemL)
++ [categories2LinkList categoryL])
)
categoryL
categories2LinkList :: [(_,String)] -> HtmlExp
categories2LinkList categoryL =
par
[center
(concatMap (\ (categoryKey,categoryString) ->
[href ('#':(string2urlencoded (show categoryKey)))
[htxt categoryString], nbsp])
categoryL)]
categorizeByItemKey :: [(String,[HtmlExp])] -> [HtmlExp]
categorizeByItemKey itemL =
list2CategorizedHtml
itemL
(map (\c -> (toUpper c,[toUpper c])) (listHeads (map fst itemL)))
categorizeStringHead
stringList2ItemList :: [String] -> [(String,[HtmlExp])]
stringList2ItemList = map (\str -> (str,[htxt str]))
listHeads :: [String] -> [Char]
listHeads =
nubBy isUpperEqual . foldr (\xs ys -> if xs==[] then ys else head xs:ys) []
categorizeStringHead :: String -> Char -> Bool
categorizeStringHead [] _ = False
categorizeStringHead (c:_) c' = isUpperEqual c c'
isUpperEqual c c' = toUpper c == toUpper c'
main = return $ form "CatTest"
(categorizeByItemKey (stringList2ItemList testList))
testList = ["bbcd",
"acde",
"ab",
"cde",
"b",
"xt",
"gbbcd",
"uacde",
"Oab",
"Qcde",
"Tb",
"mxt",
"mxtr"]
|