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LegacyFormComponent.elm
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module StatefulComponent.Form exposing
( ExternalMsg(..)
, FormOptions
, Model
, Msg
, defaultOptions
, init
, update
, updateSchema
, updateValue
, view
)
import Dict exposing (Dict)
import Dom
import Element exposing (Element, column, el, empty, paragraph, row, text)
import Element.Attributes as Attributes
exposing
( center
, class
, fill
, height
, inlineStyle
, minWidth
, padding
, paddingBottom
, paddingLeft
, paddingRight
, paddingTop
, percent
, px
, spacing
, tabindex
, vary
, verticalCenter
, width
)
import Element.Events as Events exposing (onBlur, onClick, onFocus, onInput)
import ErrorMessages exposing (stringifyError)
import FeatherIcons as Icons
import Json.Decode as Decode exposing (Decoder, decodeValue)
import Json.Encode as Encode exposing (Value)
import Json.Schema
import Json.Schema.Definitions as Schema
exposing
( Items(..)
, Schema(..)
, Schemata(..)
, SingleType(..)
, Type(..)
, blankSchema
, blankSubSchema
)
import Json.Schema.Validation exposing (Error, ValidationError)
import JsonValue exposing (JsonValue(..), getIn)
import Ref
import Styles
exposing
( Styles(..)
, Variations(..)
, stylesheet
)
import Task
type alias View =
Element Styles Variations Msg
type alias Path =
List String
type Msg
= NoMsg
| ValueInput Path String
| StringInput Path String
| NumericInput Path String
| BoolInput Path Bool
| DeletePath Path
| AddItem Path
| AddProperty Path
| SetEditPropertyName String Path Int
| EditPropertyName String
| StopEditingPropertyName
| ExpandNode Path
| CollapseNode Path
| OpenMenu Path
| CloseMenu
| FocusInput Path Schema
| BlurInput Path
type ExternalMsg
= NoOp
| UpdateValue Value
| SaveExpandedNodes (List Path)
type alias Model =
{ value : JsonValue
, schema : Schema
, validationErrors : Dict Path (List String)
, options : FormOptions
, menu : Maybe Path
, focusInput : Path
, editingNow : String
, editingSchema : Maybe Schema
, edited : Dict Path Bool
, editPropPath : Path
, editPropIndex : Maybe Int
, editPropName : String
}
type alias FormOptions =
{ schema : Schema
, expandedNodes : List Path
, applyDefaults : Bool
, showEmptyOptionalProps : Bool
, showInitialValidationErrors : Bool
, useTitleAsLabel : Bool
, allowExpandingNodes :
Bool
--, monospaceTitle : Bool
}
defaultOptions : FormOptions
defaultOptions =
{ schema = blankSchema
, expandedNodes = [ [] ]
, applyDefaults = False
, showEmptyOptionalProps = False
, showInitialValidationErrors = False
, useTitleAsLabel = False
, allowExpandingNodes =
True
--, monospaceTitle = AlwaysMonospace | MonospaceWhenKeyUsedAsLabel | NeverMonospace
}
dictFromListErrors : List Error -> Dict Path (List String)
dictFromListErrors list =
list
|> List.foldl
(\error dict ->
dict
|> Dict.update error.jsonPointer.path
(\listDetails ->
(case listDetails of
Just l ->
l ++ [ error.details |> stringifyError ]
Nothing ->
[ error.details |> stringifyError ]
)
|> Just
)
)
Dict.empty
init : FormOptions -> Value -> Model
init formOptions v =
let
validationResult =
Json.Schema.validateValue { applyDefaults = formOptions.applyDefaults } v formOptions.schema
( value, validationErrors ) =
case validationResult of
Ok validValue ->
( validValue, Dict.empty )
Err list ->
( v, list |> dictFromListErrors )
blankModel =
{ schema = formOptions.schema
, value =
value
|> decodeValue JsonValue.decoder
|> Result.withDefault JsonValue.NullValue
, validationErrors = validationErrors
, options = formOptions
, menu = Nothing
, focusInput = []
, editingNow = ""
, editingSchema = Nothing
, edited = Dict.empty
, editPropPath = []
, editPropIndex = Nothing
, editPropName = ""
}
in
blankModel
updateValue : Value -> Model -> Model
updateValue v m =
{ m
| value =
v
|> decodeValue JsonValue.decoder
|> Result.withDefault JsonValue.NullValue
}
updateSchema : Schema -> Model -> Model
updateSchema s m =
{ m | schema = s }
update : Msg -> Model -> ( ( Model, Cmd Msg ), ExternalMsg )
update msg model =
case msg of
NoMsg ->
( model
, Cmd.none
)
=> NoOp
ValueInput path str ->
let
updatedValue =
str
|> Decode.decodeString JsonValue.decoder
|> Result.andThen
(\v ->
model.value
|> JsonValue.setIn path v
-- TODO display setIn error
|> Result.mapError (Debug.log "ValueInput.setIn")
)
-- TODO display parse error
|> Result.mapError (Debug.log "ValueInput.parse")
|> Result.withDefault model.value
encodedValue =
updatedValue |> JsonValue.encode
validationResult =
Json.Schema.validateValue { applyDefaults = model.options.applyDefaults } encodedValue model.schema
( value, validationErrors ) =
case validationResult of
Ok validValue ->
( validValue |> decodeValue JsonValue.decoder |> Result.withDefault NullValue, Dict.empty )
Err list ->
( updatedValue, list |> dictFromListErrors )
in
( { model
| value = updatedValue
, editingNow = str
, validationErrors =
validationErrors
--, edited = model.edited |> Dict.insert path True
}
, Cmd.none
)
=> UpdateValue (value |> JsonValue.encode)
StringInput path str ->
let
updatedValue =
model.value
|> JsonValue.setIn path (JsonValue.StringValue str)
|> Result.mapError (Debug.log "StringInput")
|> Result.withDefault model.value
encodedValue =
updatedValue |> JsonValue.encode
validationResult =
Json.Schema.validateValue { applyDefaults = model.options.applyDefaults } encodedValue model.schema
( value, validationErrors ) =
case validationResult of
Ok validValue ->
( validValue |> decodeValue JsonValue.decoder |> Result.withDefault NullValue, Dict.empty )
Err list ->
( updatedValue, list |> dictFromListErrors )
in
( { model
| value = updatedValue
, editingNow = str
, validationErrors =
validationErrors
--, edited = model.edited |> Dict.insert path True
}
, Cmd.none
)
=> UpdateValue (value |> JsonValue.encode)
NumericInput path str ->
let
updatedValue =
str
|> String.toFloat
|> Result.andThen (\v -> JsonValue.setIn path (NumericValue v) model.value)
|> Result.mapError (Debug.log "NumericInput")
|> Result.withDefault model.value
encodedValue =
updatedValue |> JsonValue.encode
validationResult =
Json.Schema.validateValue { applyDefaults = model.options.applyDefaults } encodedValue model.schema
( value, validationErrors ) =
case validationResult of
Ok validValue ->
( validValue |> decodeValue JsonValue.decoder |> Result.withDefault NullValue, Dict.empty )
Err list ->
( updatedValue, list |> dictFromListErrors )
in
( { model
| value = value
, editingNow = str
, validationErrors =
validationErrors
--, edited = model.edited |> Dict.insert path True
}
, Cmd.none
)
=> UpdateValue (value |> JsonValue.encode)
BoolInput path bool ->
let
updatedValue =
model.value
|> JsonValue.setIn path (BoolValue bool)
|> Result.mapError (Debug.log "BoolInput")
|> Result.withDefault model.value
in
( { model | value = updatedValue }
, Cmd.none
)
=> UpdateValue (updatedValue |> JsonValue.encode)
DeletePath path ->
let
value =
model.value
|> JsonValue.deleteIn path
|> Result.mapError (Debug.log "DeletePath")
|> Result.withDefault model.value
in
( { model | value = value }
, Cmd.none
)
=> UpdateValue (value |> JsonValue.encode)
AddItem path ->
let
nextIndex =
model.value
|> JsonValue.getIn path
|> Result.withDefault (ArrayValue [])
|> (\x ->
case x of
ArrayValue l ->
List.length l |> toString
_ ->
"0"
)
itemPath =
path ++ [ nextIndex ]
value =
model.value
|> JsonValue.setIn itemPath NullValue
|> Result.mapError (Debug.log "AddItem")
|> Result.withDefault model.value
in
( { model | value = value }
, makeId itemPath |> Dom.focus |> Task.attempt (\_ -> NoMsg)
)
=> UpdateValue (value |> JsonValue.encode)
AddProperty path ->
let
nextIndex =
model.value
|> JsonValue.getIn path
|> Result.withDefault (ArrayValue [])
|> (\x ->
case x of
ObjectValue l ->
List.length l
_ ->
0
)
propPath =
path ++ [ "" ]
value =
model.value
|> JsonValue.setIn propPath NullValue
|> Result.mapError (Debug.log "AddItem")
|> Result.withDefault model.value
options =
model.options
en =
path :: options.expandedNodes
in
( { model
| value = value
, editPropPath = path
, editPropIndex = Just nextIndex |> Debug.log "index"
, editPropName = ""
, options = { options | expandedNodes = en }
, focusInput = []
}
, path
|> String.join "/"
|> (\x -> x ++ ":propname")
|> Debug.log "will focus"
|> Dom.focus
|> Task.attempt
(\x ->
let
a =
Debug.log "focus" x
in
NoMsg
)
)
=> SaveExpandedNodes en
SetEditPropertyName propName path index ->
( { model
| editPropPath = path
, editPropIndex = Just index
, editPropName = propName
, focusInput = []
}
, path
|> String.join "/"
|> (\x -> x ++ ":propname")
|> Dom.focus
|> Task.attempt (\x -> NoMsg)
)
=> NoOp
EditPropertyName str ->
( { model | editPropName = str }
, Cmd.none
)
=> NoOp
StopEditingPropertyName ->
let
updatedValue =
model.value
|> JsonValue.setPropertyName
( model.editPropPath
, model.editPropIndex |> Maybe.withDefault 0
)
model.editPropName
|> Result.withDefault model.value
in
( { model
| editPropPath = []
, editPropIndex = Nothing
, value = updatedValue
}
, Cmd.none
)
=> UpdateValue (updatedValue |> JsonValue.encode)
ExpandNode path ->
let
options =
model.options
en =
path :: options.expandedNodes
in
( { model | options = { options | expandedNodes = en } }
, Cmd.none
)
=> SaveExpandedNodes en
CollapseNode path ->
let
options =
model.options
en =
options.expandedNodes
|> List.filter ((/=) path)
in
( { model | options = { options | expandedNodes = en } }
, Cmd.none
)
=> SaveExpandedNodes en
OpenMenu path ->
( { model | menu = Just path }
, Cmd.none
)
=> NoOp
CloseMenu ->
( { model | menu = Nothing }
, Cmd.none
)
=> NoOp
FocusInput path schema ->
( { model
| focusInput = path
, editingSchema = Just schema
, editingNow =
case model.value |> getIn path of
Ok (StringValue s) ->
s
Ok (NumericValue s) ->
s |> toString
_ ->
""
}
, Cmd.none
)
=> NoOp
BlurInput path ->
if path == model.focusInput then
( { model
| focusInput = []
, editingSchema = Nothing
, edited = model.edited |> Dict.insert path True
}
, Cmd.none
)
=> NoOp
else
( model
, Cmd.none
)
=> NoOp
view : Model -> View
view model =
el None [ inlineStyle [ ( "font-family", "Menlo, monospace" ), ( "font-size", "12px" ), ( "line-height", "1.4" ) ], width <| percent 90 ] <|
viewValue model model.schema model.value []
delete : Path -> View
delete path =
Icons.xCircle
|> Icons.withStrokeWidth 2
|> Icons.withSize 18
|> Icons.toHtml []
|> Element.html
|> el None
[ onClick <| DeletePath path
, width <| px 18
, height <| px 18
, class "action"
, inlineStyle [ ( "cursor", "pointer" ) ]
]
isBlankSchema : Schema -> Bool
isBlankSchema =
Schema.encode >> Encode.encode 0 >> (==) "{}"
pickOneOf : List Schema -> Value -> Schema
pickOneOf listSchemas value =
let
defaultResult =
listSchemas
|> List.head
|> Maybe.withDefault blankSchema
isValid s =
Json.Schema.validateValue { applyDefaults = True } value s
|> Result.toMaybe
|> (/=) Nothing
in
listSchemas
|> List.filter isValid
|> List.head
|> Maybe.withDefault defaultResult
resolve : Schema -> Schema -> Schema
resolve rootSchema rawSubSchema =
let
( _, resolvedSchema ) =
case rawSubSchema of
ObjectSchema os ->
os.ref
|> Maybe.andThen (Ref.resolveReference "" Ref.defaultPool rootSchema)
|> Maybe.withDefault ( "", rawSubSchema )
_ ->
( "", rawSubSchema )
in
resolvedSchema
viewProperty : Model -> Bool -> Maybe Int -> Path -> String -> Schema -> JsonValue -> View
viewProperty model deletionAllowed indexInObject path key rawSubSchema value =
let
deeperLevelPath =
path ++ [ key ]
subSchema =
case resolve model.schema rawSubSchema of
ObjectSchema os ->
case os.anyOf of
Just schemas ->
value
|> JsonValue.encode
|> pickOneOf schemas
|> resolve model.schema
Nothing ->
ObjectSchema os
x ->
x
( objectSchema, isArray, isDictionary ) =
case subSchema of
ObjectSchema os ->
( Just os
, os.items /= NoItems
, case os.additionalProperties of
Just (BooleanSchema False) ->
False
_ ->
case value of
ObjectValue _ ->
True
_ ->
False
)
_ ->
( Nothing, False, False )
isBlank =
isBlankSchema subSchema
isExpandable =
if model.options.allowExpandingNodes then
case value of
JsonValue.ObjectValue _ ->
isBlank |> not
JsonValue.ArrayValue _ ->
isBlank |> not
{-
isBlank
|> not
|> Debug.log (toString deeperLevelPath)
-}
_ ->
False
else
False
isExpanded =
if model.options.allowExpandingNodes then
case value of
JsonValue.ObjectValue _ ->
isBlank
|| List.member
deeperLevelPath
model.options.expandedNodes
JsonValue.ArrayValue _ ->
isBlank
|| List.member
deeperLevelPath
model.options.expandedNodes
--List.member deeperLevelPath model.expandedNodes
_ ->
True
else
True
propertyNamesAutocomplete =
case subSchema of
ObjectSchema os ->
case os.properties of
Just (Schemata list) ->
let
existingProps =
case value of
ObjectValue x ->
x |> List.map (\( name, _ ) -> name)
_ ->
[]
in
list
|> List.filterMap
(\( propName, _ ) ->
if List.member propName existingProps then
Nothing
else
text propName
|> Element.node "option"
|> Just
)
|> row None
[ inlineStyle [ ( "display", "none" ) ]
, Attributes.id
(deeperLevelPath
|> String.join "/"
|> (\x -> x ++ ":props")
)
]
|> Element.node "datalist"
Nothing ->
empty
_ ->
empty
in
column None
[ paddingTop 0 ]
[ row None
[ verticalCenter, spacing 5, class "key-container" ]
[ if isExpandable then
(if isExpanded then
Icons.chevronDown
else
Icons.chevronRight
)
|> Icons.withSize 18
|> Icons.withStrokeWidth 2
|> Icons.toHtml []
|> Element.html
|> el None
[ width <| px 18
, height <| px 18
, inlineStyle [ ( "cursor", "pointer" ) ]
, if isExpanded then
onClick <| CollapseNode deeperLevelPath
else
onClick <| ExpandNode deeperLevelPath
]
else
Icons.chevronDown
|> Icons.withSize 18
|> Icons.withStrokeWidth 2
|> Icons.toHtml []
|> Element.html
|> el None
[ width <| px 18
, height <| px 18
, inlineStyle [ ( "visibility", "hidden" ) ]
]
, if indexInObject /= Nothing && indexInObject == model.editPropIndex && path == model.editPropPath then
row InputRow
[ vary Active True ]
[ model.editPropName
|> Element.inputText TextInput
[ onInput EditPropertyName
, onBlur <| StopEditingPropertyName
, path
|> String.join "/"
|> (\x -> x ++ ":propname")
|> Attributes.id
, path
|> String.join "/"
|> (\x -> x ++ ":props")
|> Attributes.list
]
]
else
(if model.options.useTitleAsLabel then
objectSchema
|> Maybe.map
(\os ->
case os.type_ of
SingleType StringType ->
empty
SingleType IntegerType ->
empty
SingleType NumberType ->
empty
_ ->
key |> text
)
|> Maybe.withDefault (key |> text)
else
key |> text
)
|> el PropertyName
[ vary Active <| deeperLevelPath == model.focusInput
]
{-
, objectSchema
|> Maybe.andThen .title
|> Maybe.withDefault key
|> text
-}
, Icons.moreVertical
|> Icons.withSize 18
|> Icons.withStrokeWidth 2
|> Icons.toHtml []
|> Element.html
|> el None
[ class "action"
, inlineStyle [ ( "cursor", "pointer" ), ( "outline", "none" ) ]
, width <| px 18
, height <| px 18
, tabindex 2
, onFocus <| OpenMenu deeperLevelPath
, onBlur <| CloseMenu
]
|> Element.below
[ if Just deeperLevelPath == model.menu then
[ text "Edit as JSON" |> el MenuItem []
, case indexInObject of
Just index ->
text "Edit property name"
|> el MenuItem
[ onClick <| SetEditPropertyName key path index
]
_ ->
empty
, if isArray then
text "Add item" |> el MenuItem [ onClick <| AddItem deeperLevelPath ]
else if isDictionary then
text "Add property" |> el MenuItem [ onClick <| AddProperty deeperLevelPath ]
else
empty
]
|> column None
[ inlineStyle
[ ( "z-index", "2" )
, ( "background", "white" )
, ( "min-width", "200px" )
, ( "border-radius", "2px" )
, ( "box-shadow", "0 2px 2px 0 rgba(0,0,0,.14), 0 3px 1px -2px rgba(0,0,0,.2), 0 1px 5px 0 rgba(0,0,0,.12)" )
]
, padding 2
]
else
empty
]
, if deletionAllowed then
delete deeperLevelPath
else
empty
]
--, displayDescription subSchema
, if isExpanded then
row None
[]
[ viewValue model subSchema value deeperLevelPath
, propertyNamesAutocomplete
]
else
empty
]
viewObject : Model -> Schema -> List ( String, JsonValue ) -> Bool -> Path -> List View
viewObject model schema props isArray path =
let
isOptional key required =
case required of
Just list ->
List.member key list |> not
Nothing ->
True
shouldRenderDefault required propName =
if model.options.showEmptyOptionalProps then
True
else
case required of
Just names ->
List.member propName names
Nothing ->
False
iterateOverSchemata propsDict required (Schemata schemata) =
schemata
|> List.map
(\( propName, subSchema ) ->
case propsDict |> Dict.get propName of
Just value ->
viewProperty model (isOptional propName required && not model.options.showEmptyOptionalProps) Nothing path propName subSchema value
Nothing ->
if shouldRenderDefault required propName then
viewProperty model (isOptional propName required && not model.options.showEmptyOptionalProps) Nothing path propName subSchema JsonValue.NullValue
else
empty
)
iterateOverProps isObject list schema =
list
|> List.indexedMap
(\index prop ->
case prop of
Just ( key, value ) ->
viewProperty model
True
(if isObject then
Just index
else
Nothing
)
path
key
schema
value
Nothing ->
empty
)
in
case schema of
BooleanSchema True ->
iterateOverProps True (props |> List.map Just) blankSchema
BooleanSchema False ->
iterateOverProps True (props |> List.map Just) disallowEverythingSchema
ObjectSchema os ->
let
knownProperties =
case os.properties of
Just (Schemata x) ->
x
|> List.map (\( key, _ ) -> key)
_ ->
[]
justProps =
props
|> List.map Just
extraProps =
props
|> List.map
(\( name, v ) ->
if List.member name knownProperties then
Nothing