A form that collects a value of type data and potentially produces errors of type customError.

Defines a new form that fields can be added to. Takes four arguments: 1, A unique id for the form to be used as id in the DOM 1. A validator function that takes the form data and returns a list of errors 1. A function that receives the fields and returns the view and combine functions 1. A function that receives the markup of a field and combines it with a list of errors

   myForm : Form Int ()
   myForm =
       Form.form "minimal-example"
           (\data -> [])
           (\errors_ html -> html)
           (\amount ->
               { view = \formState _ -> amount.view formState
               , combine = \formState -> amount.value formState
               }
           )
           |> field (integerInput [])

A function that recieves the markup of a field and combines with a list of errors.

Adds a validator to a widget.

Adds a new field with the given widget to the form

The message type for the form.

Updates the form state based on the form message.

Returns the result of the combine function aka the current state of the form.

Initializes a form state with the default values

Takes the following three arguments to display a form:

1. a function to turn the forms messages into a Msg of the application.

2. the form

3. the current state of the form

   type Msg = ... | ForForm Form.Msg | ... type alias Model = { ... , formState : FormState, .. } myForm = Form.form ...

   view model = div [] <| Form.render ForForm myForm model.formState

Adds a field to the form where the user can add and remove elements.

The first argument is a ListWithAddButton function that cobines the inout list with a button to add a new element.

The second argument is a FieldWithRemoveButton function that combines one item with a button to remove it.

The third argument is the widget to use for each element in the list.

A function that recieves the markup of a list item and combines it with a butoon to remive it from the List.

A function that recieves the markup of a field and combines it with a button to add a new item.

Adds a new field to with different variants to the form. Each variant is represented by a label and a sub form.

The function takes the following arguments:

1. A widget to select the variant

2. The default variant

3. A list of other variants

A variant for widgets with a "select" notion.

A nonempty list of variants.

Converts a form to a widget.

Creates a new Widget that's decorated with the given function.