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MdMain.elm
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MdMain.elm
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module MdMain exposing (main)
import Browser
import Cellme.Cellme exposing (Cell, CellContainer(..), CellState, RunState(..), evalCellsFully, evalCellsOnce)
import Cellme.DictCellme exposing (CellDict(..), DictCell, dictCcr, getCd, mkCc)
import Dict exposing (Dict)
import Element exposing (Element)
import Element.Background as EBk
import Element.Border as EBd
import Element.Font as Font
import Element.Input as EI
import Element.Region
import Html exposing (Attribute, Html)
import Html.Attributes
import Markdown.Block as Block exposing (Block, Inline, ListItem(..), Task(..))
import Markdown.Html
import Markdown.Parser
import Markdown.Renderer
import Schelme.Show exposing (showTerm)
type Msg
= OnMarkdownInput String
| OnSchelmeCodeChanged String String
type alias Flags =
()
type alias Model =
{ md : String
, cells : CellDict
}
view : Model -> { title : String, body : List (Html Msg) }
view model =
{ title = "schelme markdown demo"
, body =
[ Element.layout [ Element.width Element.fill ]
(Element.row [ Element.width Element.fill ]
[ EI.multiline [ Element.width (Element.px 400) ]
{ onChange = OnMarkdownInput
, text = model.md
, placeholder = Nothing
, label = EI.labelHidden "Markdown input"
, spellcheck = False
}
, case markdownView (mkRenderer model.cells) model.md of
Ok rendered ->
Element.column
[ Element.spacing 30
, Element.padding 80
, Element.width (Element.fill |> Element.maximum 1000)
, Element.centerX
]
rendered
Err errors ->
Element.text errors
]
)
]
}
markdownView : Markdown.Renderer.Renderer (Element Msg) -> String -> Result String (List (Element Msg))
markdownView renderer markdown =
markdown
|> Markdown.Parser.parse
|> Result.mapError (\error -> error |> List.map Markdown.Parser.deadEndToString |> String.join "\n")
|> Result.andThen (Markdown.Renderer.render renderer)
mdCells : String -> Result String CellDict
mdCells markdown =
markdown
|> Markdown.Parser.parse
|> Result.mapError (\error -> error |> List.map Markdown.Parser.deadEndToString |> String.join "\n")
|> Result.map blockCells
blockCells : List Block -> CellDict
blockCells blocks =
blocks
|> List.filterMap
(\block ->
case block of
Block.HtmlBlock (Block.HtmlElement tag attribs _) ->
if tag == "cell" then
let
am =
Dict.fromList <| List.map (\trib -> ( trib.name, trib.value )) attribs
in
am
|> Dict.get "name"
|> Maybe.andThen
(\name ->
am
|> Dict.get "schelmecode"
|> Maybe.map (String.replace "/'" "\"")
|> Maybe.andThen
(\schelme ->
Just ( name, defCell schelme )
)
)
else
Nothing
_ ->
Nothing
)
|> Dict.fromList
|> CellDict
defCell : String -> DictCell
defCell s =
{ code = s, prog = Err "", runstate = RsErr "" }
mkRenderer : CellDict -> Markdown.Renderer.Renderer (Element Msg)
mkRenderer cellDict =
{ heading = heading
, paragraph =
Element.paragraph
[ Element.spacing 15 ]
, thematicBreak = Element.none
, text = Element.text
, strong = \content -> Element.row [ Font.bold ] content
, emphasis = \content -> Element.row [ Font.italic ] content
, codeSpan = code
, link =
\{ title, destination } body ->
Element.newTabLink
[ Element.htmlAttribute (Html.Attributes.style "display" "inline-flex") ]
{ url = destination
, label =
Element.paragraph
[ Font.color (Element.rgb255 0 0 255)
]
body
}
, hardLineBreak = Html.br [] [] |> Element.html
, image =
\image ->
case image.title of
Just title ->
Element.image [ Element.width Element.fill ] { src = image.src, description = image.alt }
Nothing ->
Element.image [ Element.width Element.fill ] { src = image.src, description = image.alt }
, blockQuote =
\children ->
Element.column
[ EBd.widthEach { top = 0, right = 0, bottom = 0, left = 10 }
, Element.padding 10
, EBd.color (Element.rgb255 145 145 145)
, EBk.color (Element.rgb255 245 245 245)
]
children
, unorderedList =
\items ->
Element.column [ Element.spacing 15 ]
(items
|> List.map
(\(ListItem task children) ->
Element.row [ Element.spacing 5 ]
[ Element.row
[ Element.alignTop ]
((case task of
IncompleteTask ->
EI.defaultCheckbox False
CompletedTask ->
EI.defaultCheckbox True
NoTask ->
Element.text "•"
)
:: Element.text " "
:: children
)
]
)
)
, orderedList =
\startingIndex items ->
Element.column [ Element.spacing 15 ]
(items
|> List.indexedMap
(\index itemBlocks ->
Element.row [ Element.spacing 5 ]
[ Element.row [ Element.alignTop ]
(Element.text (String.fromInt (index + startingIndex) ++ " ") :: itemBlocks)
]
)
)
, codeBlock = codeBlock
, html =
Markdown.Html.oneOf
[ Markdown.Html.tag "cell"
(\name schelmeCode renderedChildren ->
cellView cellDict renderedChildren name schelmeCode
)
|> Markdown.Html.withAttribute "name"
|> Markdown.Html.withAttribute "schelmecode"
]
, table = Element.column []
, tableHeader = Element.column []
, tableBody = Element.column []
, tableRow = Element.row []
, tableHeaderCell =
\maybeAlignment children ->
Element.paragraph [] children
, tableCell = Element.paragraph []
}
{- mkRenderer : CellDict -> Markdown.Renderer.Renderer (Element Msg)
mkRenderer cellDict =
{ heading = heading
, raw =
Element.paragraph
[ Element.spacing 15 ]
, thematicBreak = Element.none
, plain = Element.text
, bold = \content -> Element.row [ Font.bold ] [ Element.text content ]
, italic = \content -> Element.row [ Font.italic ] [ Element.text content ]
, code = code
, link =
\{ title, destination } body ->
Element.newTabLink
[ Element.htmlAttribute (Html.Attributes.style "display" "inline-flex") ]
{ url = destination
, label =
Element.paragraph
[ Font.color (Element.rgb255 0 0 255)
]
body
}
|> Ok
, image =
\image body ->
Element.image [ Element.width Element.fill ] { src = image.src, description = body }
|> Ok
, unorderedList =
\items ->
Element.column [ Element.spacing 15 ]
(items
|> List.map
(\itemBlocks ->
Element.row [ Element.spacing 5 ]
[ Element.row
[ Element.alignTop ]
(Element.text "• " :: itemBlocks)
]
)
)
, orderedList =
\startingIndex items ->
Element.column [ Element.spacing 15 ]
(items
|> List.indexedMap
(\index itemBlocks ->
Element.row [ Element.spacing 5 ]
[ Element.row [ Element.alignTop ]
(Element.text (String.fromInt index ++ " ") :: itemBlocks)
]
)
)
, codeBlock = codeBlock
, html =
Markdown.Html.oneOf
[ Markdown.Html.tag "cell"
(\name schelmeCode renderedChildren ->
cellView cellDict renderedChildren name schelmeCode
)
|> Markdown.Html.withAttribute "name"
|> Markdown.Html.withAttribute "schelmecode"
]
}
-}
cellView : CellDict -> List (Element Msg) -> String -> String -> Element Msg
cellView (CellDict cellDict) renderedChildren name schelmeCode =
Element.column
[ EBd.shadow
{ offset = ( 0.3, 0.3 )
, size = 2
, blur = 0.5
, color = Element.rgba255 0 0 0 0.22
}
, Element.padding 20
, Element.spacing 30
, Element.centerX
, Font.center
]
(Element.row [ Element.spacing 20 ]
[ Element.el
[ Font.bold
, Font.size 30
]
(Element.text name)
, EI.text []
{ onChange = OnSchelmeCodeChanged name
, placeholder = Nothing
, label = EI.labelHidden name
, text =
cellDict
|> Dict.get name
|> Maybe.map .code
|> Maybe.withDefault "<err>"
}
, cellDict
|> Dict.get name
|> Maybe.map showRunState
|> Maybe.withDefault
(Element.text "<reserr>")
]
:: renderedChildren
)
showRunState : DictCell -> Element Msg
showRunState cell =
Element.el [ Element.width Element.fill ] <|
case cell.runstate of
RsOk term ->
Element.text <| showTerm term
RsErr s ->
Element.el [ Font.color <| Element.rgb 1 0.1 0.1 ] <| Element.text <| "err: " ++ s
RsUnevaled ->
Element.text <| "unevaled"
RsBlocked _ id ->
Element.text <| "blocked on cell: " ++ dictCcr.showId id
rawTextToId : String -> String
rawTextToId rawText =
rawText
|> String.toLower
|> String.replace " " ""
heading : { level : Block.HeadingLevel, rawText : String, children : List (Element msg) } -> Element msg
heading { level, rawText, children } =
Element.paragraph
[ Font.size
(case level of
Block.H1 ->
36
Block.H2 ->
24
_ ->
20
)
, Font.bold
, Font.family [ Font.typeface "Montserrat" ]
, Element.Region.heading (Block.headingLevelToInt level)
, Element.htmlAttribute
(Html.Attributes.attribute "name" (rawTextToId rawText))
, Element.htmlAttribute
(Html.Attributes.id (rawTextToId rawText))
]
children
code : String -> Element msg
code snippet =
Element.el
[ EBk.color
(Element.rgba 0 0 0 0.04)
, EBd.rounded 2
, Element.paddingXY 5 3
, Font.family
[ Font.external
{ url = "https://fonts.googleapis.com/css?family=Source+Code+Pro"
, name = "Source Code Pro"
}
]
]
(Element.text snippet)
codeBlock : { body : String, language : Maybe String } -> Element msg
codeBlock details =
Element.el
[ EBk.color (Element.rgba 0 0 0 0.03)
, Element.htmlAttribute (Html.Attributes.style "white-space" "pre")
, Element.padding 20
, Element.width Element.fill
, Font.family
[ Font.external
{ url = "https://fonts.googleapis.com/css?family=Source+Code+Pro"
, name = "Source Code Pro"
}
]
]
(Element.text details.body)
markdownBody : String
markdownBody =
"""# Markdown Schelme Cells!
###[elm-markdown](https://github.com/dillonkearns/elm-markdown) + [schelme](https://github.com/bburdette/schelme) + [cellme](https://github.com/bburdette/cellme) + [elm-ui](https://github.com/mdgriffith/elm-ui)
#####Kind of a spreadsheet, but with named cells instead of a grid.
<cell
name="inches"
schelmeCode="5"
>
</cell>
<cell
name="millimeters"
schelmeCode="(* (cv /'inches/') 25.4)"
>
</cell>
<cell
name="furlongs"
schelmeCode="(/ (cv /'inches/') (* 12 660))"
>
</cell>
"""
main : Platform.Program Flags Model Msg
main =
Browser.document
{ init =
\flags ->
let
cells =
Debug.log "newcells"
(markdownBody
|> mdCells
|> Result.withDefault (CellDict Dict.empty)
)
( cc, result ) =
evalCellsFully
(mkCc cells)
in
( { md = markdownBody
, cells = Debug.log "evaled cells: " <| getCd cc
}
, Cmd.none
)
, view = view
, update = update
, subscriptions = \model -> Sub.none
}
update : Msg -> Model -> ( Model, Cmd Msg )
update msg model =
case msg of
OnMarkdownInput newMarkdown ->
let
cells =
Debug.log "newcells"
(newMarkdown
|> mdCells
|> Result.withDefault (CellDict Dict.empty)
)
( cc, result ) =
evalCellsFully
(mkCc cells)
in
( { model
| md = newMarkdown
, cells = Debug.log "evaled cells: " <| getCd cc
}
, Cmd.none
)
OnSchelmeCodeChanged name string ->
let
(CellDict cd) =
model.cells
( cc, result ) =
evalCellsFully
(mkCc
(Dict.insert name (defCell string) cd
|> CellDict
)
)
in
( { model
| cells = getCd cc
}
, Cmd.none
)