Missing files. (snackbar still broken).

Makefile

@@ -3,7 +3,7 @@ PAGES=../elm-mdl-gh-pages
 comp: 
 	elm-make examples/Component.elm --warn --output elm.js
 
-elm.js: 
+demo:
 	elm-make examples/Demo.elm --warn --output elm.js
 
 wip-pages : 

elm-package.json

@@ -15,7 +15,8 @@
         "Material.Button",
         "Material.Textfield",
         "Material.Layout",
-        "Material.Grid"
+        "Material.Grid", 
+        "Material.Component"
     ],
     "dependencies": {
         "debois/elm-dom": "1.0.0 <= v < 2.0.0",

examples/Component.elm

@@ -14,7 +14,7 @@ import Material.Button as Button
 
 type alias Model = 
   { count : Int
-  , mdl : Material.Model    
+  , mdl : Material.Model Action
       -- Boilerplate: Model store for any and all MDL components you need. 
   }
 
@@ -66,6 +66,8 @@ update action model =
 -- VIEW
 
 
+type alias Mdl = Material.Model Action
+
 {- We construct the instances of the Button component that we need, one 
 for the increase button, one for the reset button. First, the increase
 button. The arguments are: 
@@ -79,7 +81,7 @@ button. The arguments are:
     In this case, we hook up Click events of the button to the `Increase` action
     defined above. 
 -}
-increase : Button.Instance Material.Model Action
+increase : Button.Instance Mdl Action
 increase =
   Button.instance 0 MDL 
     Button.flat (Button.model True) 
@@ -89,7 +91,7 @@ increase =
 {- Next, the reset button. This one has id 1, does not ripple, and forwards its
 click event to our Reset action.
 -}
-reset : Button.Instance Material.Model Action
+reset : Button.Instance Mdl Action
 reset = 
   Button.instance 1 MDL 
     Button.flat (Button.model False)

examples/Demo.elm

@@ -10,8 +10,9 @@ import Array exposing (Array)
 
 import Material.Color as Color
 import Material.Layout as Layout exposing (defaultLayoutModel)
-import Material exposing (lift, lift')
+import Material.Helpers exposing (lift, lift')
 import Material.Style as Style
+import Material.Scheme as Scheme
 
 import Demo.Buttons
 import Demo.Grid
@@ -178,7 +179,7 @@ view addr model =
        your html, as done with page.html. Removing it will then
        fix the flicker you see on load.
     -}
-    |> Material.topWithScheme Color.Teal Color.Red
+    |> Scheme.topWithScheme Color.Teal Color.Red
 
 
 init : (Model, Effects.Effects Action)

examples/Demo/Buttons.elm

@@ -11,8 +11,6 @@ import Material.Icon as Icon
 import Material.Style exposing (Style)
 
 import Material.Textfield as Textfield
-import Material.Component as Component 
-import Material.Component.All as Setup
 
 
 -- MODEL
@@ -69,7 +67,6 @@ model =
       buttons
       |> List.concatMap (List.map <| \(idx, (ripple, _, _)) -> (idx, Button.model ripple))
       |> Dict.fromList
-  , componentState = Setup.state
   }
 
 
@@ -78,15 +75,11 @@ model =
 
 type Action 
   = Action Index Button.Action
-  | State (Setup.Action Action)
-  | Click 
-  | Input String
 
 
 type alias Model =
   { clicked : String
   , buttons : Dict.Dict Index Button.Model
-  , componentState : Setup.State
   }
 
 
@@ -103,25 +96,6 @@ update action model =
       )
       |> Maybe.withDefault (model, Effects.none)
 
-    State action' -> 
-      Component.update State update action' model
-
-    Click -> 
-      ( tf.map (\m -> { m | value = "You clicked!" }) model, Effects.none ) 
-
-    Input str -> 
-      ( tf.map (\m -> { m | value = "You wrote '" ++ str ++ "' in the other guy."}) model 
-      , Effects.none
-      )
-
-
-instance = Component.instance State
-instance' = Component.instance' State
-
-
-tf = instance <| Textfield.component Textfield.model 4
-
-
 
 -- VIEW
 
@@ -161,12 +135,7 @@ view addr model =
   )
   |> (\contents -> 
     div []
-      [ instance' (Button.component Button.flat (Button.model True) 1 |> onClick Click) addr model [] [ text "Click me (1)" ]
+      [ Grid.grid [] contents
-      , instance' (Button.component Button.raised (Button.model False) 2) addr model [] [ text "Click me (2)" ]
-      , instance' (Textfield.component Textfield.model 3 |> Textfield.onInput Input) addr model
-      , tf.view addr model
-      , Grid.grid [] contents
       ]
       )
 
---i = instance' State (buttonWidget (Button.model True) 1) -- addr model.componentState [] [ text "Click me (1)" ]

examples/Demo/Elevation.elm

@@ -0,0 +1,101 @@
+module Demo.Elevation where
+
+import Effects exposing (Effects, none)
+import Html exposing (..)
+
+import Markdown
+
+import Material.Template as Template
+import Material exposing (lift, lift')
+
+
+-- MODEL
+
+
+type alias Model =
+  { template : Template.Model
+  }
+
+
+model : Model
+model =
+  { template = Template.model
+  }
+
+
+-- ACTION, UPDATE
+
+
+type Action 
+  = TemplateAction Template.Action
+
+
+update : Action -> Model -> (Model, Effects Action)
+update action model =
+  case action of
+    TemplateAction action' -> lift .template (\m x -> {m|template=x}) TemplateAction Template.update action' model
+
+
+-- VIEW
+
+
+
+view : Signal.Address Action -> Model -> Html
+view addr model =
+  div []
+    [ intro
+    , Template.view (Signal.forwardTo addr TemplateAction) model.template
+    ]
+
+
+
+intro : Html
+intro = """
+
+
+{-| From the [Material Design Lite documentation](https://github.com/google/material-design-lite/blob/master/src/shadow/README.md)
+
+> The Material Design Lite (MDL) shadow is not a component in the same sense as
+> an MDL card, menu, or textbox; it is a visual effect that can be assigned to a
+> user interface element. The effect simulates a three-dimensional positioning of
+> the element, as though it is slightly raised above the surface it rests upon —
+> a positive z-axis value, in user interface terms. The shadow starts at the
+> edges of the element and gradually fades outward, providing a realistic 3-D
+> effect.
+> 
+> Shadows are a convenient and intuitive means of distinguishing an element from
+> its surroundings. A shadow can draw the user's eye to an object and emphasize
+> the object's importance, uniqueness, or immediacy.
+> 
+> Shadows are a well-established feature in user interfaces, and provide users
+> with a visual clue to an object's intended use or value. Their design and use
+> is an important factor in the overall user experience.)
+
+The [Material Design Specification](https://www.google.com/design/spec/what-is-material/elevation-shadows.html#elevation-shadows-elevation-android-)
+pre-defines appropriate elevation for most UI elements; you need to manually
+assign shadows only to your own elements. 
+
+You are encouraged to visit the
+[Material Design specification](https://www.google.com/design/spec/what-is-material/elevation-shadows.html)
+for details about appropriate use of shadows. 
+
+# TEMPLATE
+
+From the
+[Material Design Lite documentation](https://www.getmdl.io/components/index.html#TEMPLATE-section).
+
+> ...
+
+#### See also
+
+ - [Demo source code](https://github.com/debois/elm-mdl/blob/master/examples/Demo/TEMPLATE.elm)
+ - [elm-mdl package documentation](http://package.elm-lang.org/packages/debois/elm-mdl/latest/Material-TEMPLATE)
+ - [Material Design Specification](https://www.google.com/design/spec/components/TEMPLATE.html)
+ - [Material Design Lite documentation](https://www.getmdl.io/components/index.html#TEMPLATE)
+
+#### Demo
+
+""" |> Markdown.toHtml
+
+
+

examples/Demo/Page.elm

@@ -0,0 +1,140 @@
+module Demo.Page 
+  ( demo, package, mds, mdl
+  , fromMDL, fromMDS
+  , body
+  ) 
+  where
+
+import Html exposing (..)
+import Html.Attributes exposing (href, class)
+import Markdown
+
+import Material.Grid exposing (..)
+import Material.Style as Style exposing (styled, cs, css, attribute)
+import Material.Button as Button
+import Material.Color as Color
+import Material.Icon as Icon
+
+
+-- REFERENCES
+
+
+demo : String -> (String, String)
+demo url = 
+  ( "Demo source", url )
+
+
+package : String -> (String, String)
+package url = 
+  ( "Package documentation", url )
+      
+
+mds : String -> (String, String) 
+mds url = 
+  ( "Material Design Specification", url )
+        
+      
+mdl : String -> (String, String)
+mdl url = 
+  ( "Material Design Lite documentation", url )
+
+
+references : List (String, String) -> List Html
+references links = 
+  [ text "References" 
+  , ul [] 
+      ( links |> List.map (\(str, url) -> 
+          li [] [ a [ href url ] [ text str ] ]
+        )
+      )
+  ]
+
+
+-- DOCUMENTATION QUOTES
+
+
+from : String -> String -> String -> Html
+from title url body = 
+  div []
+    [ text "From the "
+    , a [ href url ] [ text title ] 
+    , text ":"
+    , Markdown.toHtml body
+    ] 
+
+
+fromMDL : String -> String -> Html 
+fromMDL = 
+  from "Material Design Lite documentation" 
+
+
+fromMDS : String -> String -> Html
+fromMDS = 
+  from "Material Design Specification"
+
+
+-- TITLES
+
+
+title : String -> Html 
+title t = 
+  Style.div 
+    [ Color.text Color.primary 
+    , cs "mdl-typography--display-4" 
+    -- TODO. Typography module
+    ]
+    [ text t ]
+
+
+demoTitle : Html 
+demoTitle = 
+  Style.div 
+    [ Color.text Color.primary 
+    , cs "mdl-typography--display-1" 
+    -- TODO. Typography module
+    ]
+    [ text "Demo" ]
+
+
+
+-- VIEW SOURCE BUTTON
+
+
+addr : Signal.Address Button.Action
+addr = (Signal.mailbox Button.Click).address
+
+
+fab : String -> Html 
+fab url = 
+  Button.fab addr (Button.model False)
+    [ css "position" "fixed"
+    , css "right" "72px"
+    , css "bottom" "72px"
+    , Button.colored
+    --, attribute (href srcUrl) 
+    , attribute (Html.Attributes.attribute "onclick" ("alert('foo!');")) --("window.location.href = '" ++ srcUrl ++ "';") )
+    ]
+    [ Icon.i "link" ]
+
+
+-- BODY 
+
+
+body : String -> String -> Html -> List (String, String) -> List Html -> Html 
+body t srcUrl contents links demo = 
+  div []
+    ( title t
+    :: grid []
+        [ cell [ size All 6, size Phone 4 ] [ contents ]
+        , cell 
+            [ size All 5, offset Desktop 1, size Phone 4, align Top ] 
+            ( references <| ("Demo source", srcUrl) :: links )
+        ]
+    :: fab srcUrl
+    :: demoTitle 
+    :: demo 
+    )
+
+
+
+

examples/Demo/Snackbar.elm

@@ -5,13 +5,14 @@ import Html exposing (..)
 import Html.Attributes exposing (class, style, key)
 import Array exposing (Array)
 
+import Material.Helpers exposing (map1st, map2nd)
 import Material.Color as Color
 import Material.Style exposing (styled, cs)
 import Material.Snackbar as Snackbar
 import Material.Button as Button exposing (Action(..))
 import Material.Grid exposing (..)
 import Material.Elevation as Elevation
-import Material exposing (lift, lift')
+import Material 
 
 import Demo.Page as Page
 
@@ -19,12 +20,13 @@ import Demo.Page as Page
 -- MODEL
 
 
+type alias Mdl = Material.Model Action
+
+
 type alias Model =
   { count : Int
   , clicked : List Int
-  , snackbar : Snackbar.Model Action
+  , mdl : Mdl
-  , toastButton : Button.Model
-  , snackbarButton : Button.Model
   }
 
 
@@ -32,9 +34,7 @@ model : Model
 model =
   { count = 0
   , clicked = []
-  , snackbar = Snackbar.model
+  , mdl = Material.model
-  , toastButton = Button.model True
-  , snackbarButton = Button.model True
   }
 
 
@@ -43,10 +43,9 @@ model =
 
 type Action
   = Undo Int
-  -- Components
+  | AddSnackbar
-  | SnackbarAction (Snackbar.Action Action)
+  | AddToast
-  | ToastButtonAction Button.Action
+  | MDL (Material.Action Action)
-  | SnackbarButtonAction Button.Action
 
 
 snackbar : Int -> Snackbar.Contents Action
@@ -66,25 +65,25 @@ toast k =
 add : (Int -> Snackbar.Contents Action) -> Model -> (Model, Effects Action)
 add f model =
   let 
-    (snackbar', effects) =
+    (mdl', fx) = 
-      Snackbar.update (Snackbar.Add (f model.count)) model.snackbar
+      Snackbar.add (f model.count) snackbarComponent model.mdl
-  in
+    model' = 
-    ({ model
+      { model 
-     | snackbar = snackbar'
+      | mdl = mdl'
       , count = model.count + 1
       , clicked = model.count :: model.clicked
       }
-    , Effects.map SnackbarAction effects)
+  in 
-
+    (model', fx)
 
 
 update : Action -> Model -> (Model, Effects Action)
 update action model =
   case action of
-    SnackbarButtonAction Click ->
+    AddSnackbar ->
       add snackbar model
 
-    ToastButtonAction Click ->
+    AddToast ->
       add toast model
 
     Undo k ->
@@ -93,17 +92,33 @@ update action model =
        }
       , none)
 
-    SnackbarAction (Snackbar.Action action')
+    MDL action' -> 
-      -> update action' model
+      Material.update MDL action' model.mdl
-
+        |> map1st (\m -> { model | mdl = m })
-    SnackbarAction       action' -> lift .snackbar       (\m x -> {m|snackbar      =x}) SnackbarAction       Snackbar.update action' model
-    ToastButtonAction    action' -> lift .toastButton    (\m x -> {m|toastButton   =x}) ToastButtonAction    Button.update   action' model
-    SnackbarButtonAction action' -> lift .snackbarButton (\m x -> {m|snackbarButton=x}) SnackbarButtonAction Button.update   action' model
-
 
 -- VIEW
 
 
+addSnackbar : Button.Instance Mdl Action 
+addSnackbar = 
+  Button.instance 0 MDL
+    Button.raised (Button.model True)
+    [ Button.fwdClick AddSnackbar ]
+
+
+addToast : Button.Instance Mdl Action 
+addToast = 
+  Button.instance 1 MDL
+    Button.raised (Button.model True)
+    [ Button.fwdClick AddToast ]
+
+
+snackbarComponent : Snackbar.Instance Mdl Action
+snackbarComponent = 
+  Snackbar.instance 2 MDL Snackbar.model []
+
+
+
 clickView : Model -> Int -> Html
 clickView model k =
   let
@@ -112,9 +127,12 @@ clickView model k =
         |> Maybe.withDefault Color.Teal
         |> flip Color.color Color.S500
 
+    sbmodel = 
+      snackbarComponent.get model.mdl
+
     selected =
-      (k == model.snackbar.seq - 1) &&
+      (k == sbmodel.seq - 1) &&
-        (Snackbar.isActive model.snackbar /= Nothing)
+        (Snackbar.isActive sbmodel /= Nothing)
   in
     styled div
       [ Color.background color
@@ -146,25 +164,17 @@ view addr model =
         -- to add css/classes to top-level element of components (div
         -- in grid, button in button, div in textfield etc.)
         [ cell [ size All 2, size Phone 2, align Top ]
-            [ Button.raised
+            [ addToast.view addr model.mdl [] [ text "Toast" ]
-                (Signal.forwardTo addr ToastButtonAction)
-                model.toastButton 
-                []
-                [ text "Toast" ]
             ]
         , cell 
             [ size All 2, size Phone 2, align Top ]
-            [ Button.raised
+            [ addSnackbar.view addr model.mdl [] [ text "Snackbar" ]
-                (Signal.forwardTo addr SnackbarButtonAction)
-                model.snackbarButton
-                []
-                [ text "Snackbar" ]
             ]
         , cell
             [ size Desktop 7, size Tablet 3, size Phone 12, align Top ]
             (model.clicked |> List.reverse |> List.map (clickView model))
         ]
-    , Snackbar.view (Signal.forwardTo addr SnackbarAction) model.snackbar
+    , snackbarComponent.view addr model.mdl 
     ]
 
 

src/Material.elm

@@ -141,38 +141,41 @@ import Effects exposing (Effects)
 
 import Material.Button as Button
 import Material.Textfield as Textfield
+import Material.Snackbar as Snackbar
 import Material.Component as Component exposing (Indexed)
 
 
 {-| Model encompassing all Material components. 
 -}
-type alias Model = 
+type alias Model a = 
   { button : Indexed Button.Model
   , textfield : Indexed Textfield.Model
+  , snackbar : Indexed (Snackbar.Model a)
   }
 
 
 {-| Initial model.
 -}
-model : Model
+model : Model a
 model = 
   { button = Dict.empty
   , textfield = Dict.empty
+  , snackbar = Dict.empty
   }
 
 
 {-| Action encompassing actions of all Material components. 
 -}
 type alias Action action = 
-  Component.Action Model action
+  Component.Action (Model action) action
 
 
 {-| Update function for the above Action. 
 -}
 update : 
   (Action action -> action) 
-  -> (Action action) 
+  -> Action action
-  -> Model 
+  -> Model action
-  -> (Model, Effects action)
+  -> (Model action, Effects action)
 update = 
   Component.update

src/Material/Button.elm

@@ -279,7 +279,8 @@ type alias Instance state obs =
     (List Style -> List Html -> Html)
 
 
-{-| Ydrk. -}
+{-| Component instance.
+-}
 instance : 
   Int
   -> (Component.Action (State state) obs -> obs)
@@ -289,8 +290,8 @@ instance :
   -> Instance (State state) obs
 
 instance id lift view model0 observers = 
-  Component.setup view update .button (\x y -> {y | button = x}) model0 id
+  Component.instance 
-    |> Component.instance lift observers
+    view update .button (\x y -> {y | button = x}) id lift model0 observers
 
 
 {-| Lift the button Click action to your own action. E.g., 

src/Material/Component.elm

@@ -35,38 +35,27 @@ instead at `Material`.
 @docs instance
 
 # Instance consumption
-@docs update
+@docs update, Action
 
 -}
 
 import Effects exposing (Effects)
 import Dict exposing (Dict)
 
-import Material.Helpers exposing (map1, map2, map1st, map2nd)
+import Material.Helpers exposing (map1, map2, map1st, map2nd, Update, Update')
 
 
 -- TYPES
 
 
-{- Variant of EA update function type, where effects may be 
-lifted to a different type. 
--}
-type alias Update' model action action' = 
-  action -> model -> (model, Effects action')
-
-
-{-| Standard EA update function type. 
--}
-type alias Update model action = 
-  Update' model action action
-
-
 {-| Standard EA view function type. 
 -}
 type alias View model action a = 
   Signal.Address action -> model -> a
 
 
+-- EMBEDDING MODELS 
+
 
 {-| Indexed families of things.
 -}
@@ -136,16 +125,15 @@ embedIndexed view update get set model0 id =
 
 
 
+-- LIFTING ACTIONS
 
-{-| We need a generic Action which encompasses x
+
+{-| Generic MDL Action. 
 -}
 type Action model obs = 
   A (model -> (model, Effects (Action model obs), Maybe obs))
 
 
--- FOR CONSUMERS
-
-
 {-| Generic update function for Action. 
 -}
 update : 
@@ -183,11 +171,12 @@ type alias Step model action obs =
 and get/set/map for, well, getting, setting, and mapping the component
 model. 
 -}
-type alias Instance submodel model action a = 
+type alias Instance submodel model subaction action a = 
   { view : View model action a
   , get : model -> submodel
   , set : submodel -> model -> model
   , map : (submodel -> submodel) -> model -> model
+  , fwd : subaction -> action 
   }
 
 
@@ -240,7 +229,7 @@ instance' :
   (Action model action -> action) -> 
   List (Observer subaction action) -> 
   Embedding submodel model subaction a -> 
-  Instance submodel model action a
+  Instance submodel model subaction action a
 instance' lift observers embedding = 
   let 
     fwd = 
@@ -256,6 +245,7 @@ instance' lift observers embedding =
     , get = get
     , set = set
     , map = \f model -> set (f (get model)) model
+    , fwd = fwd
     }
 
 
@@ -282,11 +272,8 @@ instance
     -> (Action container observation -> observation)
     -> model
     -> List (Observer action observation)
-    -> Instance model container observation a
+    -> Instance model container action observation a
 
 instance view update get set id lift model0 observers = 
   embedIndexed view update get set model0 id 
     |> instance' lift observers
-
-
-

src/Material/Helpers.elm

@@ -53,3 +53,39 @@ map2nd : (b -> c) -> (a,b) -> (a,c)
 map2nd f (x,y) = (x, f y)
 
 
+{- Variant of EA update function type, where effects may be 
+lifted to a different type. 
+-}
+type alias Update' model action action' = 
+  action -> model -> (model, Effects action')
+
+
+{-| Standard EA update function type. 
+-}
+type alias Update model action = 
+  Update' model action action
+
+
+lift' :
+  (model -> submodel) ->                                      -- get
+  (model -> submodel -> model) ->                             -- set
+  (subaction -> submodel -> submodel) -> 
+  subaction ->                                                -- action
+  model ->                                                    -- model
+  (model, Effects action)
+lift' get set update action model =
+  (set model (update action (get model)), Effects.none)
+
+lift :
+  (model -> submodel) ->                                      -- get
+  (model -> submodel -> model) ->                             -- set
+  (subaction -> action) ->                                    -- fwd
+  Update submodel subaction ->                               -- update
+  subaction ->                                                -- action
+  model ->                                                    -- model
+  (model, Effects action)
+lift get set fwd update action model =
+  let
+    (submodel', e) = update action (get model)
+  in
+    (set model submodel', Effects.map fwd e)

src/Material/Shadow.elm

@@ -0,0 +1,83 @@
+module Material.Elevation
+  ( shadow
+  , transition
+  ) where
+
+
+{-| From the [Material Design Lite documentation](https://github.com/google/material-design-lite/blob/master/src/shadow/README.md)
+
+> The Material Design Lite (MDL) shadow is not a component in the same sense as
+> an MDL card, menu, or textbox; it is a visual effect that can be assigned to a
+> user interface element. The effect simulates a three-dimensional positioning of
+> the element, as though it is slightly raised above the surface it rests upon —
+> a positive z-axis value, in user interface terms. The shadow starts at the
+> edges of the element and gradually fades outward, providing a realistic 3-D
+> effect.
+> 
+> Shadows are a convenient and intuitive means of distinguishing an element from
+> its surroundings. A shadow can draw the user's eye to an object and emphasize
+> the object's importance, uniqueness, or immediacy.
+> 
+> Shadows are a well-established feature in user interfaces, and provide users
+> with a visual clue to an object's intended use or value. Their design and use
+> is an important factor in the overall user experience.)
+
+See also the 
+[Material Design specification](https://www.google.com/design/spec/what-is-material/elevation-shadows.html)
+.
+
+# Component
+@docs shadow, transition
+
+# View
+@docs view
+
+-}
+
+
+import Effects exposing (Effects, none)
+import Html exposing (..)
+
+
+-- MODEL
+
+
+{-| Component model.
+-}
+type alias Model =
+  {
+  }
+
+
+{-| Default component model constructor.
+-}
+model : Model
+model =
+  {
+  }
+
+
+-- ACTION, UPDATE
+
+
+{-| Component action.
+-}
+type Action
+  = MyAction
+
+
+{-| Component update.
+-}
+update : Action -> Model -> (Model, Effects Action)
+update action model =
+  (model, none)
+
+
+-- VIEW
+
+
+{-| Component view.
+-}
+view : Signal.Address Action -> Model -> Html
+view addr model =
+  div [] [ h1 [] [ text "TEMPLATE" ] ]

src/Material/Snackbar.elm

@@ -2,6 +2,7 @@ module Material.Snackbar
   ( Contents, Model, model, toast, snackbar, isActive
   , Action(Add, Action), update
   , view
+  , Instance, instance, add
   ) where
 
 {-| TODO
@@ -24,6 +25,7 @@ import Task
 import Time exposing (Time)
 import Maybe exposing (andThen)
 
+import Material.Component as Component exposing (Indexed)
 import Material.Helpers exposing (mapFx, addFx)
 
 
@@ -44,7 +46,7 @@ type alias Contents a =
 -}
 type alias Model a =
   { queue : List (Contents a)
-  , state : State a
+  , state : State' a
   , seq : Int
   }
 
@@ -84,6 +86,7 @@ snackbar message actionMessage action =
   , fade = 250
   }
 
+
 {-| TODO
 -}
 isActive : Model a -> Maybe (Contents a)
@@ -107,7 +110,7 @@ contentsOf model =
 -- SNACKBAR STATE MACHINE
 
 
-type State a
+type State' a
   = Inert
   | Active (Contents a)
   | Fading (Contents a)
@@ -270,3 +273,66 @@ view addr model =
           )
           buttonBody
       ]
+
+
+-- COMPONENT
+
+
+{-|
+-}
+type alias State s  obs = 
+  { s | snackbar : Indexed (Model obs) }
+
+
+{-|
+-}
+type alias Instance state obs =
+  Component.Instance (Model obs) state (Action obs) obs Html
+
+
+{-|
+-}
+type alias Observer obs = 
+  Component.Observer (Action obs) obs
+
+
+{-| Component instance.
+-}
+instance : 
+  Int
+  -> (Component.Action (State state obs) obs -> obs)
+  -> (Model obs)
+  -> List (Observer obs)
+  -> Instance (State state obs) obs
+
+instance id lift model0 observers = 
+  Component.instance 
+    view update .snackbar (\x y -> {y | snackbar = x}) id lift model0 observers
+
+
+{-|
+  TODO
+-}
+add : 
+  Contents obs 
+  -> Instance (State state obs) obs 
+  -> (State state obs)
+  -> (State state obs, Effects obs)
+add contents inst model = 
+  let
+    (sb, fx) = 
+      update (Add contents) (inst.get model)
+  in
+    (inst.set sb model, Effects.map inst.fwd fx)
+
+{-| Lift the button Click action to your own action. E.g., 
+-}
+{-
+fwdClick : obs -> (Observer obs)
+fwdClick obs action = 
+  case action of 
+    Click -> Just obs
+    _ -> Nothing 
+
+-}
+

src/Material/Textfield.elm

@@ -182,14 +182,10 @@ type alias State state =
 {-| 
 -}
 type alias Instance state obs = 
-  Component.Instance
+  Component.Instance Model state obs Html
-    Model
-    state
-    obs
-    Html
 
 
-{-| Component constructor. 
+{-| Component constructor. See module `Material`.
 -}
 instance : 
   Int
@@ -198,13 +194,11 @@ instance :
   -> List (Component.Observer Action obs)
   -> Instance (State state) obs
 
-
+instance = 
-instance id lift model0 observers = 
   let 
     update' action model = (update action model, Effects.none)
   in 
-    Component.setup view update' .textfield (\x y -> {y | textfield = x}) model0 id
+    Component.instance view update' .textfield (\x y -> {y | textfield = x}) 
-      |> Component.instance lift observers
 
 
 {-| Lift the button Click action to your own action. E.g.,