80 lines
2.9 KiB
Haskell
80 lines
2.9 KiB
Haskell
{-# LANGUAGE OverloadedStrings #-}
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{- |
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HTML writing helpers using blaze-html.
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-}
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module Hledger.Write.Html.Blaze (
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styledTableHtml,
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formatRow,
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formatCell,
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) where
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import Hledger.Write.Html.Attribute qualified as Attr
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import Hledger.Write.Spreadsheet qualified as Spr
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import Hledger.Write.Html.HtmlCommon (Lines, borderStyles)
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import Hledger.Write.Spreadsheet (Type(..), Style(..), Emphasis(..), Cell(..))
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import Text.Blaze.Html4.Transitional.Attributes qualified as HtmlAttr
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import Text.Blaze.Html4.Transitional qualified as Html
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import Data.Text qualified as Text
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import Text.Blaze.Html4.Transitional (Html, toHtml, (!))
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import Data.Foldable (traverse_)
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-- | Export spreadsheet table data as HTML table.
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-- This is derived from <https://hackage.haskell.org/package/classify-frog-0.2.4.3/src/src/Spreadsheet/Format.hs>
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styledTableHtml :: (Lines border) => [[Cell border Html]] -> Html
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styledTableHtml table = do
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Html.style $ toHtml $ Attr.tableStylesheet
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Html.table $ traverse_ formatRow table
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formatRow:: (Lines border) => [Cell border Html] -> Html
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formatRow = Html.tr . traverse_ formatCell
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formatCell :: (Lines border) => Cell border Html -> Html
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formatCell cell =
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let str = cellContent cell in
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let content =
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if Text.null $ cellAnchor cell
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then str
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else Html.a str !
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HtmlAttr.href (Html.textValue (cellAnchor cell)) in
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let style =
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case borderStyles cell of
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[] -> []
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ss -> [HtmlAttr.style $ Html.textValue $
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Attr.concatStyles ss] in
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let class_ =
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map (HtmlAttr.class_ . Html.textValue) $
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filter (not . Text.null) [Spr.textFromClass $ cellClass cell] in
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let span_ makeCell attrs =
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case Spr.cellSpan cell of
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Spr.NoSpan -> foldl (!) makeCell attrs
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Spr.Covered -> pure ()
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Spr.SpanHorizontal n ->
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foldl (!) makeCell
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(HtmlAttr.colspan (Html.stringValue $ show n) : attrs)
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Spr.SpanVertical n ->
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foldl (!) makeCell
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(HtmlAttr.rowspan (Html.stringValue $ show n) : attrs)
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in
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case cellStyle cell of
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Head -> span_ (Html.th content) (style++class_)
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Body emph ->
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let align =
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case cellType cell of
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TypeString -> []
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TypeDate -> []
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_ -> [HtmlAttr.align "right"]
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valign =
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case Spr.cellSpan cell of
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Spr.SpanVertical n ->
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if n>1 then [HtmlAttr.valign "top"] else []
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_ -> []
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withEmph =
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case emph of
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Item -> id
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Total -> Html.b
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in span_ (Html.td $ withEmph content) $
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style++align++valign++class_
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