/
DropdownButton.purs
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DropdownButton.purs
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module Lumi.Components.DropdownButton where
import Prelude
import Color (cssStringHSLA)
import Control.MonadZero (guard)
import Data.Foldable (fold, foldMap, intercalate)
import Data.Int (toNumber)
import Data.Maybe (Maybe(..), fromMaybe, isNothing, maybe)
import Data.Monoid as Monoid
import Data.Nullable (Nullable, toMaybe, toNullable)
import Data.Traversable (for_)
import Effect (Effect)
import Effect.Uncurried (EffectFn2, runEffectFn2)
import Effect.Unsafe (unsafePerformEffect)
import JSS (JSS, jss)
import Lumi.Components.Button (button, secondary)
import Lumi.Components.Color (colors)
import Lumi.Components.Column (column_)
import Lumi.Components.Divider (divider_)
import Lumi.Components.Icon as Icon
import Lumi.Components.Link as Link
import Lumi.Components.Text (p_)
import Lumi.Components.ZIndex (ziDropdownButton)
import Math as Math
import React.Basic.Classic (Component, JSX, createComponent, element, fragment, make, makeStateless, readProps, readState)
import React.Basic.DOM as R
import React.Basic.DOM.Components.GlobalEvents (windowEvent)
import React.Basic.DOM.Components.Ref (ref)
import React.Basic.DOM.Events (capture_, stopPropagation)
import React.Basic.Events (handler)
import Unsafe.Coerce (unsafeCoerce)
import Unsafe.Reference (unsafeRefEq)
import Web.DOM (Node)
import Web.DOM.Document (createElement) as DOM
import Web.DOM.Element (setId, toNode) as DOM
import Web.DOM.Node (appendChild) as DOM
import Web.DOM.NonElementParentNode (getElementById) as DOM
import Web.Event.Event (EventType(..))
import Web.Event.Internal.Types (Event)
import Web.HTML (window) as HTML
import Web.HTML.HTMLDocument (body, toDocument, toNonElementParentNode) as HTML
import Web.HTML.HTMLElement (HTMLElement, fromNode, getBoundingClientRect, toNode) as HTML
import Web.HTML.Window (document, innerWidth, scrollX, scrollY) as HTML
import Web.HTML.Window (requestAnimationFrame)
-- | Props for a DropdownButton component. The argument to the `content` field
-- | is a callback which may be called to inform the dropdown button that it
-- | should close itself.
type DropdownButtonProps =
{ label :: String
, content :: Effect Unit -> JSX
, className :: String
, onOpen :: Effect Unit
, alignment :: Nullable String
}
dropdownButtonComponent :: Component DropdownButtonProps
dropdownButtonComponent = createComponent "DropdownButton"
dropdownButton :: DropdownButtonProps -> JSX
dropdownButton =
make dropdownButtonComponent
{ initialState
, shouldUpdate
, didMount
, render
}
where
initialState =
{ isOpen: false
, root: Nothing
, width: 0.0
, position:
{ bottom: 0.0
, left: 0.0
, right: 0.0
}
}
shouldUpdate { props, state } { nextProps, nextState } =
props.label /= nextProps.label ||
not (unsafeRefEq props.content nextProps.content) ||
props.className /= nextProps.className ||
props.alignment /= nextProps.alignment ||
state.isOpen /= nextState.isOpen ||
state.position /= nextState.position
didMount self = do
rootM <- DOM.getElementById "dropdown-root" <<< HTML.toNonElementParentNode =<< HTML.document =<< HTML.window
case rootM of
Nothing -> do
rootEl <- DOM.createElement "div" <<< HTML.toDocument =<< HTML.document =<< HTML.window
DOM.setId "dropdown-root" rootEl
bodyM <- HTML.body =<< HTML.document =<< HTML.window
bodyM # foldMap \body -> do
void $ DOM.appendChild (DOM.toNode rootEl) (HTML.toNode body)
self.setState _{ root = Just rootEl }
Just rootEl ->
self.setState _{ root = Just rootEl }
capturePosition self ref p0 =
HTML.fromNode ref # foldMap \el -> do
props <- readProps self
state <- readState self
{ bottom, left } <- HTML.getBoundingClientRect el
let p0'@{ bottom: bottom0, left: left0 } = fromMaybe { bottom, left } p0
-- Close the dropdown if the user has scrolled too far.
if Math.abs (bottom - bottom0) > 64.0 || Math.abs (left - left0) > 64.0
then close self
else do
p <- getAbsolutePosition el
d <- getDimensions el
when state.isOpen $
void $ requestAnimationFrame (capturePosition self ref (Just p0')) =<< HTML.window
self.setState _{ position = p, width = d.width }
toggleOpen self refM = do
self.setStateThen
(_ { isOpen = not self.state.isOpen })
do
props <- readProps self
state <- readState self
when state.isOpen props.onOpen
refM # foldMap \ref ->
capturePosition self ref Nothing
close self = do
window <- HTML.window
self.setState _{ isOpen = false }
render self@{ props, state } =
lumiDropdownButton
{ "class": props.className <> " lumi"
, "data-alignment": props.alignment
, children:
[ ref \maybeDropdownButtonRef ->
fragment
[ button secondary
{ title = props.label
, onPress = capture_ $ toggleOpen self maybeDropdownButtonRef
}
, fold ado
rootEl <- state.root
guard state.isOpen
in
closeOnWindowClick maybeDropdownButtonRef <<< closeOnWindowResize
$ flip R.createPortal rootEl
$ lumiDropdownButtonContent
{ style: R.mergeStyles
[ R.css
{ top: show (state.position.bottom + 4.0) <> "px"
, minWidth: show state.width <> "px"
}
, if maybe false (_ == "right") (toMaybe props.alignment) then
R.css { left: "auto", right: show (state.position.right - 1.0) <> "px" }
else
R.css { left: show (state.position.left - 1.0) <> "px" }
]
, onClick: handler stopPropagation mempty
, children: [ props.content (close self) ]
}
]
]
}
where
closeOnWindowClick refM =
windowEvent
{ eventType: EventType "click"
, options: { capture: false, once: false, passive: false }
, handler: case refM of
Nothing -> \_ -> pure unit
Just dropdownButtonRef -> \e -> do
isEventTargetInTree <- runEffectFn2 checkIsEventTargetInTree dropdownButtonRef e
when (not isEventTargetInTree) do
close self
}
closeOnWindowResize =
windowEvent
{ eventType: EventType "resize"
, options: { capture: false, once: false, passive: false }
, handler: \_ -> close self
}
lumiDropdownButton = element $ unsafePerformEffect $ R.unsafeCreateDOMComponent "lumi-dropdown-button"
lumiDropdownButtonContent = element $ unsafePerformEffect $ R.unsafeCreateDOMComponent "lumi-dropdown-button-content"
lumiDropdownButtonMarker = element $ unsafePerformEffect $ R.unsafeCreateDOMComponent "lumi-dropdown-button-marker"
type DropdownMenuProps =
{ label :: String
, className :: String
, alignment :: Nullable String
, items ::
Array (Array
{ label :: String
, action :: Maybe (Effect Unit)
})
}
dropdownMenuComponent :: Component DropdownMenuProps
dropdownMenuComponent = createComponent "DropdownMenu"
dropdownMenu :: DropdownMenuProps -> JSX
dropdownMenu = makeStateless dropdownMenuComponent render where
render { label, className, items, alignment } =
dropdownButton
{ label
, className: "lumi-dropdown-menu " <> className
, alignment: alignment
, onOpen: pure unit
, content: \closeSelf ->
let
fromItems xs =
column_ $ xs <#> \item ->
Link.link Link.defaults
{ className = pure $ fold
[ "lumi-dropdown-menu-item"
, Monoid.guard (isNothing item.action) " disabled"
]
, text = p_ item.label
, navigate = pure $ for_ item.action \action -> do
closeSelf
action
}
in
fragment [ intercalate divider_ (map fromItems items) ]
}
dropdownButtonDefaults :: DropdownButtonProps
dropdownButtonDefaults =
{ label: ""
, content: mempty
, className: ""
, onOpen: pure unit
, alignment: toNullable Nothing
}
dropdownMenuDefaults :: DropdownMenuProps
dropdownMenuDefaults =
{ label: ""
, className: ""
, alignment: toNullable Nothing
, items: []
}
type DropdownIconProps =
{ icon :: JSX
, content :: Effect Unit -> JSX
, onOpen :: Effect Unit
, alignment :: Nullable String
}
dropdownIconDefaults :: DropdownIconProps
dropdownIconDefaults =
{ icon: Icon.icon
{ type_: Icon.Overflow
, style: R.css { color: cssStringHSLA colors.black1 }
}
, content: mempty
, onOpen: pure unit
, alignment: toNullable Nothing
}
dropdownIcon :: DropdownIconProps -> JSX
dropdownIcon props =
dropdownButton
-- this `unsafeCoerce` is a hack until Dropdown and Button
-- both support JSX labels instead of Strings
{ label: (unsafeCoerce :: JSX -> String) props.icon
, content: props.content
, className: "lumi-dropdown-icon"
, onOpen: props.onOpen
, alignment: props.alignment
}
foreign import checkIsEventTargetInTree :: EffectFn2 Node Event Boolean
getDimensions :: HTML.HTMLElement -> Effect { width :: Number, height :: Number }
getDimensions el = do
{ width, height } <- HTML.getBoundingClientRect el
pure
{ width: width
, height: height
}
getAbsolutePosition :: HTML.HTMLElement -> Effect { bottom :: Number, left :: Number, right :: Number }
getAbsolutePosition el = do
window <- HTML.window
{ bottom, left, right } <- HTML.getBoundingClientRect el
scrollX <- map toNumber (HTML.scrollX window)
scrollY <- map toNumber (HTML.scrollY window)
innerWidth <- map toNumber (HTML.innerWidth window)
pure
{ bottom: bottom + scrollY
, left: left + scrollX
, right: innerWidth - right + scrollX
}
styles :: JSS
styles = jss
{ "@global":
{ "lumi-dropdown-button":
{ display: "inline-block"
, position: "relative"
}
, "lumi-dropdown-button:not(.lumi-dropdown-icon)":
{ "& > react-basic-ref > button.lumi":
{ backgroundImage: "url(\"data:image/svg+xml;charset=utf8,%3C?xml version='1.0' encoding='UTF-8'?%3E%3Csvg width='11px' height='5px' viewBox='0 0 11 5' version='1.1' xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink'%3E%3C!-- Generator: Sketch 49.1 (51147) - http://www.bohemiancoding.com/sketch --%3E%3Ctitle%3ESlice 1%3C/title%3E%3Cdesc%3ECreated with Sketch.%3C/desc%3E%3Cdefs%3E%3Cpath d='M5.417,3.519 C5.797,3.187 6.307,2.733 6.912,2.185 L6.974,2.129 C7.70584693,1.46645784 8.43485361,0.800785071 9.161,0.132 C9.29247374,0.0108869595 9.47857352,-0.0308857001 9.64919735,0.0224173781 C9.81982119,0.0757204563 9.94904726,0.216001266 9.98819736,0.390417384 C10.0273475,0.564833501 9.97047374,0.746886966 9.839,0.868 C9.11068658,1.53896706 8.37934578,2.20664054 7.645,2.871 L7.583,2.927 C5.376,4.922 5.287,5 5,5 C4.713,5 4.624,4.922 2.417,2.927 L2.355,2.871 C1.62081041,2.20646869 0.889470368,1.5387959 0.161,0.868 C-0.0422407879,0.68077547 -0.0552245302,0.364240788 0.132,0.161 C0.31922453,-0.0422407879 0.635759212,-0.0552245302 0.839,0.132 C1.5649901,0.800955473 2.29399753,1.46662893 3.026,2.129 L3.088,2.185 C3.693,2.733 4.203,3.187 4.583,3.519 C4.75,3.665 4.89,3.785 5,3.877 C5.11,3.785 5.25,3.665 5.417,3.519 Z' id='path-1'%3E%3C/path%3E%3C/defs%3E%3Cg id='Page-1' stroke='none' stroke-width='1' fill='none' fill-rule='evenodd'%3E%3Cg id='arrow-down'%3E%3Cg id='a-link' fill='%2342413F' fill-rule='nonzero'%3E%3Cpath d='M5.417,3.519 C5.797,3.187 6.307,2.733 6.912,2.185 L6.974,2.129 C7.70584693,1.46645784 8.43485361,0.800785071 9.161,0.132 C9.29247374,0.0108869595 9.47857352,-0.0308857001 9.64919735,0.0224173781 C9.81982119,0.0757204563 9.94904726,0.216001266 9.98819736,0.390417384 C10.0273475,0.564833501 9.97047374,0.746886966 9.839,0.868 C9.11068658,1.53896706 8.37934578,2.20664054 7.645,2.871 L7.583,2.927 C5.376,4.922 5.287,5 5,5 C4.713,5 4.624,4.922 2.417,2.927 L2.355,2.871 C1.62081041,2.20646869 0.889470368,1.5387959 0.161,0.868 C-0.0422407879,0.68077547 -0.0552245302,0.364240788 0.132,0.161 C0.31922453,-0.0422407879 0.635759212,-0.0552245302 0.839,0.132 C1.5649901,0.800955473 2.29399753,1.46662893 3.026,2.129 L3.088,2.185 C3.693,2.733 4.203,3.187 4.583,3.519 C4.75,3.665 4.89,3.785 5,3.877 C5.11,3.785 5.25,3.665 5.417,3.519 Z' id='a'%3E%3C/path%3E%3C/g%3E%3Cg id='Clipped'%3E%3Cmask id='mask-2' fill='white'%3E%3Cuse xlink:href='%23path-1'%3E%3C/use%3E%3C/mask%3E%3Cg id='a'%3E%3C/g%3E%3Cg id='Group' mask='url(%23mask-2)' fill='%23292827' fill-rule='nonzero'%3E%3Cg transform='translate(-5.000000, -8.000000)' id='Shape'%3E%3Cpolygon points='0 0 20 0 20 20 0 20'%3E%3C/polygon%3E%3C/g%3E%3C/g%3E%3C/g%3E%3C/g%3E%3C/g%3E%3C/svg%3E\")"
, backgroundRepeat: "no-repeat"
, backgroundPositionY: "center"
, backgroundPositionX: "calc(100% - 14px)"
-- text padding-right + arrow width + arrow padding-right
, paddingRight: "calc(10px + 10px + 14px)"
, "&[data-color=\"secondary\"]":
{ "&:hover": { color: cssStringHSLA colors.black }
, "&:focus": { borderColor: cssStringHSLA colors.primary }
}
}
}
, "lumi-dropdown-button.lumi-dropdown-icon":
{ "& > react-basic-ref > button.lumi":
{ border: "none"
, padding: "0"
, minWidth: "0"
}
}
, "lumi-dropdown-button-content":
{ cursor: "default"
, position: "absolute"
, top: "calc(100% + 4px)"
, left: "-1px"
, border: [ "1px", "solid", cssStringHSLA colors.black4 ]
, borderRadius: "3px"
, boxShadow: "0 2px 4px 0 rgba(12, 0, 51, 0.06)"
, background: cssStringHSLA colors.white
, zIndex: ziDropdownButton
, "& a.lumi.lumi-dropdown-menu-item":
{ boxSizing: "border-box"
, width: "100%"
, display: "inline-block"
, textAlign: "left"
, paddingLeft: "12px"
, paddingRight: "12px"
, whiteSpace: "nowrap"
, color: cssStringHSLA colors.black
, textDecoration: "none"
, "&.disabled":
{ color: cssStringHSLA colors.black1
}
, "&:not(.disabled):hover":
{ backgroundColor: cssStringHSLA colors.black7
}
}
}
}
}