Submit98

FL is required to pass an unknown number of handles of the same type need to the callback function in a form submission. The handles need to be collected in a list and then wrapped in the FL data constructor

Constructors

FL [a x]

Instances

InputHandle a => InputHandle (FL a)

data FA a b x

FA comes handy when you want to tag an input handle with some extra information, which is not itsefl an input handle and which is not validated by a form submission. The tag is the first argument and the handle is the second argument of the data constructor.

Constructors

FA a (b x)

Instances

InputHandle b => InputHandle (FA a b)

deF0 :: r -> F0 x -> r

deF1 :: (a x -> r) -> F1 a x -> r

deF2 :: (a x -> b x -> r) -> F2 a b x -> r

deF3 :: (a x -> b x -> c x -> r) -> F3 a b c x -> r

deF4 :: (a x -> b x -> c x -> d x -> r) -> F4 a b c d x -> r

deF5 :: (a x -> b x -> c x -> d x -> e x -> r) -> F5 a b c d e x -> r

deF6 :: (a x -> b x -> c x -> d x -> e x -> f x -> r) -> F6 a b c d e f x -> r

deF7 :: (a x -> b x -> c x -> d x -> e x -> f x -> g x -> r) -> F7 a b c d e f g x -> r

deF8 :: (a x -> b x -> c x -> d x -> e x -> f x -> g x -> h x -> r) -> F8 a b c d e f g h x -> r

deFL :: ([a x] -> r) -> FL a x -> r

deFA :: (a -> b x -> r) -> FA a b x -> r

submit

:: InputHandle h
=> h INVALID	input field handles to be validated and passed to callback action
-> (h VALID -> CGI ())	callback maps valid input handles to a CGI action
-> HTMLField x y ()	returns a field so that attributes can be attached
Create a submission button with attached action.

submit0 :: CGI () -> HTMLField x y ()

Create a continuation button that takes no parameters.

defaultSubmit :: InputHandle h => h INVALID -> (h VALID -> CGI ()) -> HTMLField x y ()

Create a submission button whose attached action is fired whenever the form is submitted without explicitly clicking any submit button. This can happen if an input field has an attached onclick=submit() action.

data DTree x y

Abstract type of decisions trees. These trees provide structured validation.

submitx :: DTree x y -> HTMLField x y ()

Create a submission button whose validation proceeds according to a decision tree. Trees are built using dtleaf and dtnode.

dtleaf :: CGI () -> DTree x y

Create a leaf in a decision tree from a CGI action.

dtnode :: InputHandle h => h INVALID -> (h VALID -> DTree x y) -> DTree x y

Create a node in a decision tree. Takes an invalid input field and a continuation. Validates the input field and passes it to the continuation if the validation was successful. The continuation can dispatch on the value of the input field and produces a new decision tree.

submitLink :: InputHandle h => h INVALID -> (h VALID -> CGI ()) -> HTMLCons x y CGI ()

Create an ordinary link serving as a submission button.

submitLink0 :: CGI () -> HTMLCons x y CGI ()

Create a continuation link.

defaultSubmitLink :: InputHandle h => h INVALID -> (h VALID -> CGI ()) -> HTMLCons x y CGI ()

activate :: (InputHandle (i a), HasValue i) => (a -> CGI ()) -> HTMLField x y (i a INVALID) -> HTMLField x y (i a INVALID)

Attach a CGI action to the value returned by the input field. Activation means that data is submitted as soon as it is entered.

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