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Start new V4 button.
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Gavin Panella
parent
88f689c6da
commit
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786
src/Nri/Ui/Button/V4.elm
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786
src/Nri/Ui/Button/V4.elm
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module Nri.Ui.Button.V4 exposing
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( ButtonSize(..), ButtonStyle(..), ButtonState(..), ButtonContent
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, ButtonConfig, button, customButton, delete, copyToClipboard, ToggleButtonConfig, toggleButton
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, LinkConfig, link, linkSpa, linkExternal, linkWithMethod, linkWithTracking, linkExternalWithTracking
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)
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{-|
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# Changes from V2:
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- Uses Html.Styled
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- Removes buttonDeprecated
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- Removes Tiny size
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- Removes one-off Active hack
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- Removes "submit" button - we just used that for forms that were partially in Elm
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# About:
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Common NoRedInk buttons. For accessibility purposes, buttons that perform an
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action on the current page should be HTML `<button>` elements and are created here
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with `*Button` functions. Buttons that take the user to a new page should be
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HTML `<a>` elements and are created here with `*Link` functions. Both versions
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should be able to use the same CSS class in all cases.
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There will generally be a `*Button` and `*Link` version of each button style.
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(These will be created as they are needed.)
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## Common configs
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@docs ButtonSize, ButtonStyle, ButtonState, ButtonContent
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## `<button>` Buttons
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@docs ButtonConfig, button, customButton, delete, copyToClipboard, ToggleButtonConfig, toggleButton
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## `<a>` Buttons
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@docs LinkConfig, link, linkSpa, linkExternal, linkWithMethod, linkWithTracking, linkExternalWithTracking
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-}
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import Accessibility.Styled as Html exposing (Attribute, Html)
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import Accessibility.Styled.Role as Role
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import Accessibility.Styled.Widget as Widget
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import Css exposing (Style)
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import Css.Foreign
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import EventExtras.Styled as EventExtras
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import Html.Styled as Styled
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import Html.Styled.Attributes as Attributes
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import Html.Styled.Events as Events
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import Json.Decode
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import Markdown.Block
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import Markdown.Inline
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import Nri.Ui
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import Nri.Ui.AssetPath as AssetPath exposing (Asset)
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import Nri.Ui.Colors.Extra as ColorsExtra
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import Nri.Ui.Colors.V1 as Colors
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import Nri.Ui.Fonts.V1
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import Nri.Ui.Icon.V3 as Icon exposing (IconType)
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{-| Sizes for buttons and links that have button classes
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-}
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type ButtonSize
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= Small
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| Medium
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| Large
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{-| Styleguide-approved styles for your buttons!
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Note on borderless buttons:
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A borderless button that performs an action on the current page
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This button is intended to look like a link.
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Only use a borderless button when the clickable text in question follows the same layout/margin/padding as a bordered button
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-}
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type ButtonStyle
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= Primary
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| Secondary
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| Borderless
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| Danger
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| Premium
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{-| Describes the state of a button. Has consequences for appearance and disabled attribute.
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- Enabled: An enabled button. Takes the appearance of ButtonStyle
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- Unfulfilled: A button which appears with the InactiveColors palette but is not disabled.
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- Disabled: A button which appears with the InactiveColors palette and is disabled.
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- Error: A button which appears with the ErrorColors palette and is disabled.
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- Loading: A button which appears with the LoadingColors palette and is disabled
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- Success: A button which appears with the SuccessColors palette and is disabled
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-}
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type ButtonState
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= Enabled
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| Unfulfilled
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| Disabled
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| Error
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| Loading
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| Success
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{-| The part of a button that remains constant through different button states
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-}
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type alias ButtonConfig msg =
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{ onClick : msg
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, size : ButtonSize
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, style : ButtonStyle
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, width : Maybe Int
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}
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{-| ButtonContent, often changes based on ButtonState. For example, a button in the "Success"
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state may have a different label than a button in the "Error" state
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-}
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type alias ButtonContent =
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{ label : String
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, state : ButtonState
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, icon : Maybe IconType
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}
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{-| A delightful button which can trigger an effect when clicked!
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This button will trigger the passed-in message if the button state is:
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- Enabled
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- Unfulfilled
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This button will be Disabled if the button state is:
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- Disabled
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- Error
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- Loading
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- Success
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-}
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button : ButtonConfig msg -> ButtonContent -> Html msg
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button config content =
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customButton [] config content
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{-| Exactly the same as button but you can pass in a list of attributes
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-}
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customButton : List (Attribute msg) -> ButtonConfig msg -> ButtonContent -> Html msg
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customButton attributes config content =
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let
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buttonStyle =
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case content.state of
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Enabled ->
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styleToColorPalette config.style
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Disabled ->
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InactiveColors
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Error ->
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ErrorColors
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Unfulfilled ->
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InactiveColors
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Loading ->
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LoadingColors
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Success ->
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SuccessColors
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disabled =
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case content.state of
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Enabled ->
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False
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Disabled ->
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True
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Error ->
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True
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Unfulfilled ->
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False
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Loading ->
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True
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Success ->
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True
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in
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Nri.Ui.styled Html.button
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(styledName "customButton")
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(buttonStyles config.size config.width buttonStyle Button)
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([ Events.onClick config.onClick
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, Attributes.disabled disabled
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, Attributes.type_ "button"
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]
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++ attributes
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)
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(viewLabel content.icon content.label)
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-- COPY TO CLIPBOARD BUTTON
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{-| Config for copyToClipboard
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-}
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type alias CopyToClipboardConfig =
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{ size : ButtonSize
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, style : ButtonStyle
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, copyText : String
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, buttonLabel : String
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, withIcon : Bool
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, width : Maybe Int
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}
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{-| See ui/src/Page/Teach/Courses/Assignments/index.coffee
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You will need to hook this up to clipboard.js
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-}
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copyToClipboard : { r | teach_assignments_copyWhite_svg : Asset } -> CopyToClipboardConfig -> Html msg
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copyToClipboard assets config =
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let
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maybeIcon =
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if config.withIcon then
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Just (Icon.copy assets)
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else
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Nothing
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in
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Nri.Ui.styled Html.button
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(styledName "copyToClipboard")
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(buttonStyles config.size config.width (styleToColorPalette config.style) Button)
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[ Widget.label "Copy URL to clipboard"
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, Attributes.attribute "data-clipboard-text" config.copyText
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]
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(viewLabel maybeIcon config.buttonLabel)
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-- DELETE BUTTON
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type alias DeleteButtonConfig msg =
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{ label : String
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, onClick : msg
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}
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{-| A delete button (blue X)
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-}
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delete : { r | x : String } -> DeleteButtonConfig msg -> Html msg
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delete assets config =
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Nri.Ui.styled Html.button
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(styledName "delete")
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[ Css.display Css.inlineBlock
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, Css.backgroundRepeat Css.noRepeat
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, Css.backgroundColor Css.transparent
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, Css.backgroundPosition Css.center
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, Css.backgroundSize Css.contain
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, Css.border Css.zero
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, Css.width (Css.px 15)
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, Css.height (Css.px 15)
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, Css.padding Css.zero
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, Css.margin2 Css.zero (Css.px 6)
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, Css.cursor Css.pointer
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, Css.color Colors.azure
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]
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[ Events.onClick config.onClick
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, Attributes.type_ "button"
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, -- reference: https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/ARIA_Techniques/Using_the_button_role#Labeling_buttons
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Widget.label config.label
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]
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[ Icon.icon { alt = "Delete", icon = Icon.xSvg assets } ]
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-- TOGGLE BUTTON
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{-| Buttons can be toggled into a pressed state and back again.
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-}
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type alias ToggleButtonConfig msg =
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{ label : String
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, onSelect : msg
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, onDeselect : msg
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, pressed : Bool
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}
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{-| -}
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toggleButton : ToggleButtonConfig msg -> Html msg
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toggleButton config =
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let
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toggledStyles =
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if config.pressed then
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[ Css.color Colors.gray20
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, Css.backgroundColor Colors.glacier
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, Css.boxShadow5 Css.inset Css.zero (Css.px 3) Css.zero (ColorsExtra.withAlpha 0.2 Colors.gray20)
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, Css.border3 (Css.px 1) Css.solid Colors.azure
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, Css.fontWeight Css.bold
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]
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else
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[]
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in
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Nri.Ui.styled Html.button
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(styledName "toggleButton")
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(buttonStyles Medium Nothing SecondaryColors Button
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++ toggledStyles
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)
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[ Events.onClick
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(if config.pressed then
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config.onDeselect
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else
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config.onSelect
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)
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, Widget.pressed <| Just config.pressed
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-- reference: https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/ARIA_Techniques/Using_the_button_role#Labeling_buttons
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, Role.button
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-- Note: setting type: 'button' removes the default behavior of submit
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-- equivalent to preventDefaultBehavior = false
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-- https://developer.mozilla.org/en-US/docs/Web/HTML/Element/button#attr-name
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, Attributes.type_ "button"
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]
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(viewLabel Nothing config.label)
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{-| Inputs can be a clickable thing used in a form
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-}
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type alias InputConfig =
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{ content : Html Never
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, name : String
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, size : ButtonSize
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, style : ButtonStyle
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, value : String
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}
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-- LINKS THAT LOOK LIKE BUTTONS
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{-| Links are clickable things with a url.
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NOTE: Links do not support two-line labels.
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-}
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type alias LinkConfig =
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{ label : String
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, icon : Maybe IconType
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, url : String
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, size : ButtonSize
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, style : ButtonStyle
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, width : Maybe Int
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}
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{-| Wrap some text so it looks like a button, but actually is wrapped in an anchor to
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some url
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-}
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link : LinkConfig -> Html msg
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link =
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linkBase "link" [ Attributes.target "_self" ]
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{-| Use this link for routing within a single page app.
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This will make a normal <a> tag, but change the Events.onClick behavior to avoid reloading the page.
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See <https://github.com/elm-lang/html/issues/110> for details on this implementation.
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-}
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linkSpa :
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(route -> String)
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-> (route -> msg)
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->
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{ label : String
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, icon : Maybe IconType
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, size : ButtonSize
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, style : ButtonStyle
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, width : Maybe Int
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, route : route
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}
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-> Html msg
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linkSpa toUrl toMsg config =
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linkBase
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"linkSpa"
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[ EventExtras.onClickPreventDefaultForLinkWithHref (toMsg config.route)
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]
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{ label = config.label
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, icon = config.icon
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, size = config.size
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, style = config.style
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, width = config.width
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, url = toUrl config.route
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}
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{-| Wrap some text so it looks like a button, but actually is wrapped in an anchor to
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some url and have it open to an external site
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-}
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linkExternal : LinkConfig -> Html msg
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linkExternal =
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linkBase "linkExternal" [ Attributes.target "_blank" ]
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{-| Wrap some text so it looks like a button, but actually is wrapped in an anchor to
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some url, and it's an HTTP request (Rails includes JS to make this use the given HTTP method)
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-}
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linkWithMethod : String -> LinkConfig -> Html msg
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linkWithMethod method =
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linkBase "linkWithMethod" [ Attributes.attribute "data-method" method ]
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{-| Wrap some text so it looks like a button, but actually is wrapped in an anchor to some url.
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This should only take in messages that result in a Msg that triggers Analytics.trackAndRedirect. For buttons that trigger other effects on the page, please use Nri.Button.button instead
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-}
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linkWithTracking : msg -> LinkConfig -> Html msg
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linkWithTracking onTrack =
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linkBase
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"linkWithTracking"
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[ Events.onWithOptions "click"
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{ stopPropagation = False
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, preventDefault = True
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}
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(Json.Decode.succeed onTrack)
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]
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{-| Wrap some text so it looks like a button, but actually is wrapped in an anchor to some url and have it open to an external site
|
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|
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This should only take in messages that result in tracking events. For buttons that trigger other effects on the page, please use Nri.Ui.Button.V2.button instead
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-}
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linkExternalWithTracking : msg -> LinkConfig -> Html msg
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linkExternalWithTracking onTrack =
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linkBase
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"linkExternalWithTracking"
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[ Attributes.target "_blank"
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, EventExtras.onClickForLinkWithHref onTrack
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]
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{-| Helper function for building links with an arbitrary number of Attributes
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-}
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linkBase : String -> List (Attribute msg) -> LinkConfig -> Html msg
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linkBase linkFunctionName extraAttrs config =
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Nri.Ui.styled Styled.a
|
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(styledName linkFunctionName)
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(Css.whiteSpace Css.noWrap
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:: buttonStyles config.size config.width (styleToColorPalette config.style) Anchor
|
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)
|
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(Attributes.href config.url
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:: extraAttrs
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)
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(viewLabel config.icon config.label)
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-- HELPERS
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type ColorPalette
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= PrimaryColors
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| SecondaryColors
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| BorderlessColors
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| DangerColors
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| PremiumColors
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||||
| InactiveColors
|
||||
| LoadingColors
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| SuccessColors
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| ErrorColors
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||||
|
||||
|
||||
styleToColorPalette : ButtonStyle -> ColorPalette
|
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styleToColorPalette style =
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case style of
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Primary ->
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PrimaryColors
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Secondary ->
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SecondaryColors
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||||
|
||||
Borderless ->
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||||
BorderlessColors
|
||||
|
||||
Danger ->
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||||
DangerColors
|
||||
|
||||
Premium ->
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||||
PremiumColors
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||||
|
||||
|
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buttonStyles : ButtonSize -> Maybe Int -> ColorPalette -> ElementType -> List Style
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buttonStyles size width colorPalette elementType =
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List.concat
|
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[ buttonStyle
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, colorStyle colorPalette
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, sizeStyle size width elementType
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]
|
||||
|
||||
|
||||
viewLabel : Maybe IconType -> String -> List (Html msg)
|
||||
viewLabel icn label =
|
||||
case icn of
|
||||
Nothing ->
|
||||
renderMarkdown label
|
||||
|
||||
Just iconType ->
|
||||
[ Html.span [] (Icon.decorativeIcon iconType :: renderMarkdown label) ]
|
||||
|
||||
|
||||
renderMarkdown : String -> List (Html msg)
|
||||
renderMarkdown markdown =
|
||||
case Markdown.Block.parse Nothing markdown of
|
||||
-- It seems to be always first wrapped in a `Paragraph` and never directly a `PlainInline`
|
||||
[ Markdown.Block.Paragraph _ inlines ] ->
|
||||
List.map (Markdown.Inline.toHtml >> Styled.fromUnstyled) inlines
|
||||
|
||||
_ ->
|
||||
[ Html.text markdown ]
|
||||
|
||||
|
||||
|
||||
-- STYLES
|
||||
|
||||
|
||||
buttonStyle : List Style
|
||||
buttonStyle =
|
||||
[ Css.cursor Css.pointer
|
||||
, Css.display Css.inlineBlock
|
||||
, -- Specifying the font can and should go away after bootstrap is removed from application.css
|
||||
Nri.Ui.Fonts.V1.baseFont
|
||||
, Css.textOverflow Css.ellipsis
|
||||
, Css.overflow Css.hidden
|
||||
, Css.textDecoration Css.none
|
||||
, Css.backgroundImage Css.none
|
||||
, Css.textShadow Css.none
|
||||
, Css.property "transition" "all 0.2s"
|
||||
, Css.boxShadow Css.none
|
||||
, Css.border Css.zero
|
||||
, Css.marginBottom Css.zero
|
||||
, Css.hover [ Css.textDecoration Css.none ]
|
||||
, Css.disabled [ Css.cursor Css.notAllowed ]
|
||||
]
|
||||
|
||||
|
||||
colorStyle : ColorPalette -> List Style
|
||||
colorStyle colorPalette =
|
||||
let
|
||||
( config, additionalStyles ) =
|
||||
case colorPalette of
|
||||
PrimaryColors ->
|
||||
( { background = Colors.azure
|
||||
, hover = Colors.azureDark
|
||||
, text = Colors.white
|
||||
, border = Nothing
|
||||
, shadow = Colors.azureDark
|
||||
}
|
||||
, []
|
||||
)
|
||||
|
||||
SecondaryColors ->
|
||||
( { background = Colors.white
|
||||
, hover = Colors.glacier
|
||||
, text = Colors.azure
|
||||
, border = Just <| Colors.azure
|
||||
, shadow = Colors.azure
|
||||
}
|
||||
, []
|
||||
)
|
||||
|
||||
BorderlessColors ->
|
||||
( { background = Css.rgba 0 0 0 0
|
||||
, hover = Css.rgba 0 0 0 0
|
||||
, text = Colors.azure
|
||||
, border = Nothing
|
||||
, shadow = Css.rgba 0 0 0 0
|
||||
}
|
||||
, [ Css.hover
|
||||
[ Css.textDecoration Css.underline
|
||||
, Css.disabled [ Css.textDecoration Css.none ]
|
||||
]
|
||||
]
|
||||
)
|
||||
|
||||
DangerColors ->
|
||||
( { background = Colors.red
|
||||
, hover = Colors.redDark
|
||||
, text = Colors.white
|
||||
, border = Nothing
|
||||
, shadow = Colors.redDark
|
||||
}
|
||||
, []
|
||||
)
|
||||
|
||||
PremiumColors ->
|
||||
( { background = Colors.yellow
|
||||
, hover = Colors.ochre
|
||||
, text = Colors.navy
|
||||
, border = Nothing
|
||||
, shadow = Colors.ochre
|
||||
}
|
||||
, []
|
||||
)
|
||||
|
||||
InactiveColors ->
|
||||
( { background = Colors.gray92
|
||||
, hover = Colors.gray92
|
||||
, text = Colors.gray45
|
||||
, border = Nothing
|
||||
, shadow = Colors.gray92
|
||||
}
|
||||
, []
|
||||
)
|
||||
|
||||
LoadingColors ->
|
||||
( { background = Colors.glacier
|
||||
, hover = Colors.glacier
|
||||
, text = Colors.navy
|
||||
, border = Nothing
|
||||
, shadow = Colors.glacier
|
||||
}
|
||||
, []
|
||||
)
|
||||
|
||||
SuccessColors ->
|
||||
( { background = Colors.greenDark
|
||||
, hover = Colors.greenDark
|
||||
, text = Colors.white
|
||||
, border = Nothing
|
||||
, shadow = Colors.greenDark
|
||||
}
|
||||
, []
|
||||
)
|
||||
|
||||
ErrorColors ->
|
||||
( { background = Colors.purple
|
||||
, hover = Colors.purple
|
||||
, text = Colors.white
|
||||
, border = Nothing
|
||||
, shadow = Colors.purple
|
||||
}
|
||||
, []
|
||||
)
|
||||
in
|
||||
[ Css.batch additionalStyles
|
||||
, Css.color config.text
|
||||
, Css.backgroundColor config.background
|
||||
, Css.fontWeight (Css.int 700)
|
||||
, Css.textAlign Css.center
|
||||
, case config.border of
|
||||
Nothing ->
|
||||
Css.borderStyle Css.none
|
||||
|
||||
Just color ->
|
||||
Css.batch
|
||||
[ Css.borderColor color
|
||||
, Css.borderStyle Css.solid
|
||||
]
|
||||
, Css.borderBottomStyle Css.solid
|
||||
, Css.borderBottomColor config.shadow
|
||||
, Css.fontStyle Css.normal
|
||||
, Css.hover
|
||||
[ Css.color config.text
|
||||
, Css.backgroundColor config.hover
|
||||
, Css.disabled [ Css.backgroundColor config.background ]
|
||||
]
|
||||
, Css.visited [ Css.color config.text ]
|
||||
]
|
||||
|
||||
|
||||
type ElementType
|
||||
= Anchor
|
||||
| Button
|
||||
|
||||
|
||||
sizeStyle : ButtonSize -> Maybe Int -> ElementType -> List Style
|
||||
sizeStyle size width elementType =
|
||||
let
|
||||
config =
|
||||
case size of
|
||||
Small ->
|
||||
{ fontSize = 15
|
||||
, minHeight = 36
|
||||
, imageHeight = 15
|
||||
, shadowHeight = 2
|
||||
, minWidth = 75
|
||||
}
|
||||
|
||||
Medium ->
|
||||
{ fontSize = 17
|
||||
, minHeight = 45
|
||||
, imageHeight = 15
|
||||
, shadowHeight = 3
|
||||
, minWidth = 100
|
||||
}
|
||||
|
||||
Large ->
|
||||
{ fontSize = 20
|
||||
, minHeight = 56
|
||||
, imageHeight = 20
|
||||
, shadowHeight = 4
|
||||
, minWidth = 200
|
||||
}
|
||||
|
||||
widthAttributes =
|
||||
case width of
|
||||
Just pxWidth ->
|
||||
[ Css.maxWidth (Css.pct 100)
|
||||
, Css.width (Css.px <| toFloat pxWidth)
|
||||
]
|
||||
|
||||
Nothing ->
|
||||
[ Css.paddingLeft (Css.px 16)
|
||||
, Css.paddingRight (Css.px 16)
|
||||
, Css.minWidth (Css.px config.minWidth)
|
||||
]
|
||||
|
||||
lineHeightPx =
|
||||
case elementType of
|
||||
Anchor ->
|
||||
config.minHeight
|
||||
|
||||
Button ->
|
||||
case size of
|
||||
Small ->
|
||||
15
|
||||
|
||||
Medium ->
|
||||
19
|
||||
|
||||
Large ->
|
||||
22
|
||||
in
|
||||
[ Css.fontSize (Css.px config.fontSize)
|
||||
, Css.borderRadius (Css.px 8)
|
||||
, Css.minHeight (Css.px config.minHeight)
|
||||
, Css.paddingTop (Css.px 4)
|
||||
, Css.paddingBottom (Css.px 4)
|
||||
, Css.lineHeight (Css.px lineHeightPx)
|
||||
, Css.boxSizing Css.borderBox
|
||||
, Css.borderWidth (Css.px 1)
|
||||
, Css.borderBottomWidth (Css.px config.shadowHeight)
|
||||
, Css.batch widthAttributes
|
||||
, Css.Foreign.descendants
|
||||
[ Css.Foreign.img
|
||||
[ Css.height (Css.px config.imageHeight)
|
||||
, Css.marginRight (Css.px <| config.imageHeight / 6)
|
||||
, Css.position Css.relative
|
||||
, Css.bottom (Css.px 2)
|
||||
, Css.verticalAlign Css.middle
|
||||
]
|
||||
, Css.Foreign.svg
|
||||
[ Css.height (Css.px config.imageHeight) |> Css.important
|
||||
, Css.width (Css.px config.imageHeight) |> Css.important
|
||||
, Css.marginRight (Css.px <| config.imageHeight / 6)
|
||||
, Css.position Css.relative
|
||||
, Css.bottom (Css.px 2)
|
||||
, Css.verticalAlign Css.middle
|
||||
]
|
||||
, Css.Foreign.svg
|
||||
[ Css.important <| Css.height (Css.px config.imageHeight)
|
||||
, Css.important <| Css.width Css.auto
|
||||
, Css.maxWidth (Css.px (config.imageHeight * 1.25))
|
||||
, Css.paddingRight (Css.px <| config.imageHeight / 6)
|
||||
, Css.position Css.relative
|
||||
, Css.bottom (Css.px 2)
|
||||
, Css.verticalAlign Css.middle
|
||||
]
|
||||
]
|
||||
]
|
||||
|
||||
|
||||
styledName : String -> String
|
||||
styledName suffix =
|
||||
"Nri-Ui-Button-V4-" ++ suffix
|
||||
@ -11,7 +11,7 @@ import Html.Styled exposing (..)
|
||||
import Html.Styled.Attributes exposing (css)
|
||||
import ModuleExample as ModuleExample exposing (Category(..), ModuleExample, ModuleMessages)
|
||||
import Nri.Ui.AssetPath exposing (Asset)
|
||||
import Nri.Ui.Button.V3 as Button
|
||||
import Nri.Ui.Button.V4 as Button
|
||||
import Nri.Ui.Icon.V3 as Icon
|
||||
|
||||
|
||||
@ -43,7 +43,7 @@ example assets unnamedMessages state =
|
||||
messages =
|
||||
unnamedMessages "ButtonExample"
|
||||
in
|
||||
{ filename = "Nri.Ui.Button.V3"
|
||||
{ filename = "Nri.Ui.Button.V4"
|
||||
, category = Buttons
|
||||
, content =
|
||||
[ viewButtonExamples assets messages state ]
|
||||
|
||||
Loading…
Reference in New Issue
Block a user