Material Components for the Web for Elm

Elm-mdc allows you to write beautiful Elm applications with a Material Design look. It uses the CSS from Google's Material Components for the Web, but reimplements the JavaScript in Elm.

Screenshots

Demo

Live demo & ~~package documentation~~ (not released on package.elm-lang.org yet, see Building the documentation below).

Getting started

Create an index.html that looks like this:

<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Getting Started</title>

  <link href="https://fonts.googleapis.com/css?family=Roboto:300,400,500" rel="stylesheet">
  <link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
  <link href="https://cdnjs.cloudflare.com/ajax/libs/normalize/7.0.0/normalize.min.css" rel="stylesheet">
  <link href="elm-mdc/material-components-web.css" rel="stylesheet">

</head>
<body class="mdc-typography">
  <script src="elm-mdc/elm-mdc.js"></script>
  <script src="elm.js"></script>
  <div id="elm">
    <script type="text/javascript">
      Elm.Main.init({ node: document.getElementById('elm') });
    </script>
  </div>
</body>

The first three CSS files are provided by Google. The fourth CSS file is provided by this library and contains the MDC CSS.

Put the JavaScript in the body. The first JavasSript file, elm-mdc.js, is provided by this library. The second JavaScript file, called elm.js here, is your compiled Elm application.

Make sure that the file elm-mdc.js is correctly served by your web server, as otherwise this library will behave unexpectedly. See below for instructions on how to build elm-mdc.js as well as material-components-web.css.

Install

Assuming an empty directory, you create an elm-mdc application as follows:

elm init.
Install this library from github:

git clone git@github.com:aforemny/elm-mdc.git

Build the required sources:

cd elm-mdc
make
cd ..

Add the required libraries (see elm-mdc/elm.json):

elm install elm/regex
elm install elm/svg
elm install elm/json
elm install K-Adam/elm-dom

Change the source-directories property in elm.json to include elm-mdc:

    "source-directories": [
        "src",
        "elm-mdc/src"
    ],

Create an index.html as above.
Create your first application, for now let's just copy the hello world example: cp -p elm-mdc/examples/hello-world/Main.elm src/Main.elm
Compile it: elm make src/Main.elm --output app.js

And that's it.

Example application

See examples/hello-world/ for a full example. You have to run make in the root repository before to create the files elm-mdc.js and material-components-web.css.

module Main exposing (..)

import Browser
import Html exposing (Html, text)
import Material
import Material.Button as Button
import Material.Options as Options


type alias Model =
    { mdc : Material.Model Msg
    }


defaultModel : Model
defaultModel =
    { mdc = Material.defaultModel
    }


type Msg
    = Mdc (Material.Msg Msg)
    | Click


main : Program () Model Msg
main =
    Browser.element
        { init = \_ -> init
        , subscriptions = subscriptions
        , update = update
        , view = view
        }


init : ( Model, Cmd Msg )
init =
    ( defaultModel, Material.init Mdc )


subscriptions : Model -> Sub Msg
subscriptions model =
    Material.subscriptions Mdc model


update : Msg -> Model -> ( Model, Cmd Msg )
update msg model =
    case msg of
        Mdc msg_ ->
            Material.update Mdc msg_ model

        Click ->
            ( model, Cmd.none )


view : Model -> Html Msg
view model =
    Html.div []
        [
          Button.view Mdc "my-button" model.mdc
              [ Button.ripple
              , Options.onClick Click
              ]
              [ text "Click me!" ]
        ]

Build instructions

Building the demo

$ make build-demo
$ open build/index.html

Building the demo on Windows

$ build.cmd build-demo
$ build/index.html

Building the documentation

$ make docs

Building the documentation on Windows

$ build.cmd docs

Starterkit and hot reload

To get started with this library more easily, have a look at the elm-mdc starterkit. This contains a fully featured example that demonstrates hot code reload.

History

The implementation is based on debois/elm-mdl, which uses the now abandoned Material Design Lite framework.

Contribute

Contributions are warmly encouraged - please get in touch! Use GitHub to report bugs, too.

aforemny / elm-mdc