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* Use elm-css 16.0.0 * 💀 Ui.Checkbox V1 and V2 * s/Css.Foreign/Css.Global/g * 💀 Nri.Ui.Styles.V1 * 💀 BannerAlert.V1 * 💀 Modal.V1 * 💀 Dropdown.V1 * 💀 Select.V1 and V2 * 💀 Alert.V1 * 💀 Button.V1 and V2 * 💀 Divider.V1 * 💀 Icon.V1 and V2 * 💀 Outline.V1 * 💀 SegmentedControl.V1-V5 * 💀 TextArea.V1 and V2 * 💀 TextInput.V1 * delete the rest of the modules * actually more deletions * InputStyles v1 is unused * move to src-0.18 * do the 0.19 upgrade * select options are addressable by index * elm-css 16 * update scripts * elm-format * Update V2.elm * put the nbsp back * elm-format validation for both versions
42 lines
1.3 KiB
Elm
42 lines
1.3 KiB
Elm
module EventExtras exposing (onClickPreventDefaultForLinkWithHref)
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import Html
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import Html.Events exposing (..)
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import Json.Decode
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{-| This is necessary to use in single-page apps (SPA) when intercepting the
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`onClick` of `<a>` tags that trigger navigation within the app,
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as a normal `onClickPreventDefault` will prevent the user from opening the link
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in a new tab/window.
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(From <https://github.com/elm-lang/html/issues/110>)
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-}
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onClickPreventDefaultForLinkWithHref : msg -> Html.Attribute msg
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onClickPreventDefaultForLinkWithHref msg =
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let
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isSpecialClick : Json.Decode.Decoder Bool
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isSpecialClick =
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Json.Decode.map2
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(\isCtrl isMeta -> isCtrl || isMeta)
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(Json.Decode.field "ctrlKey" Json.Decode.bool)
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(Json.Decode.field "metaKey" Json.Decode.bool)
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succeedIfFalse : a -> Bool -> Json.Decode.Decoder a
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succeedIfFalse msg preventDefault =
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case preventDefault of
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False ->
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Json.Decode.succeed msg
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True ->
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Json.Decode.fail "succeedIfFalse: condition was True"
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in
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onWithOptions "click"
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{ stopPropagation = False
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, preventDefault = True
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}
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(isSpecialClick
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|> Json.Decode.andThen (succeedIfFalse msg)
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)
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