Support boilerplate for Elm clients

Lately I was toiling while writing a ClojureScript client. This made me crave
Elm. I'm going to rewrite the ClojureScript client using Elm, but along the way,
I'm stopping off here and recording my starter boilerplate.

1 files changed, 43 insertions, 0 deletions

diff --git a/boilerplate/elm/src/State.elm b/boilerplate/elm/src/State.elm
new file mode 100644
index 000000000000..c1edae8bb638
--- /dev/null
+++ b/boilerplate/elm/src/State.elm
@@ -0,0 +1,43 @@
+module State exposing (..)
+
+
+type Msg
+    = DoNothing
+    | SetView View
+
+
+type View
+    = Landing
+    | Login
+
+
+type alias Model =
+    { isLoading : Bool
+    , view : View
+    }
+
+
+{-| The initial state for the application.
+-}
+init : Model
+init =
+    { isLoading = False
+    , view = Landing
+    }
+
+
+{-| Now that we have state, we need a function to change the state.
+-}
+update : Msg -> Model -> ( Model, Cmd Msg )
+update msg model =
+    case msg of
+        DoNothing ->
+            ( model, Cmd.none )
+
+        SetView x ->
+            ( { model
+                | view = x
+                , isLoading = True
+              }
+            , Cmd.none
+            )