emoji picker improvements (#2392)

* rework emoji picker

* dynamic position

* always prefer the left if it will fit

* add accessibility label

* Update EmojiPicker.web.tsx

oops. remove accessibility from fake button

6 files changed, 136 insertions, 59 deletions

diff --git a/src/state/shell/composer.tsx b/src/state/shell/composer.tsx
index bdf5e4a7a..9cf8ef8de 100644
--- a/src/state/shell/composer.tsx
+++ b/src/state/shell/composer.tsx
@@ -30,6 +30,7 @@ export interface ComposerOpts {
   onPost?: () => void
   quote?: ComposerOptsQuote
   mention?: string // handle of user to mention
+  openPicker?: (pos: DOMRect | undefined) => void
 }
 
 type StateContext = ComposerOpts | undefined
diff --git a/src/view/com/composer/Composer.tsx b/src/view/com/composer/Composer.tsx
index 9f60923d6..b15afe6f0 100644
--- a/src/view/com/composer/Composer.tsx
+++ b/src/view/com/composer/Composer.tsx
@@ -6,6 +6,7 @@ import {
   Keyboard,
   KeyboardAvoidingView,
   Platform,
+  Pressable,
   ScrollView,
   StyleSheet,
   TouchableOpacity,
@@ -46,7 +47,6 @@ import {Gallery} from './photos/Gallery'
 import {MAX_GRAPHEME_LENGTH} from 'lib/constants'
 import {LabelsBtn} from './labels/LabelsBtn'
 import {SelectLangBtn} from './select-language/SelectLangBtn'
-import {EmojiPickerButton} from './text-input/web/EmojiPicker.web'
 import {insertMentionAt} from 'lib/strings/mention-manip'
 import {Trans, msg} from '@lingui/macro'
 import {useLingui} from '@lingui/react'
@@ -70,6 +70,7 @@ export const ComposePost = observer(function ComposePost({
   onPost,
   quote: initQuote,
   mention: initMention,
+  openPicker,
 }: Props) {
   const {currentAccount} = useSession()
   const {data: currentProfile} = useProfileQuery({did: currentAccount!.did})
@@ -274,6 +275,10 @@ export const ComposePost = observer(function ComposePost({
   const canSelectImages = useMemo(() => gallery.size < 4, [gallery.size])
   const hasMedia = gallery.size > 0 || Boolean(extLink)
 
+  const onEmojiButtonPress = useCallback(() => {
+    openPicker?.(textInput.current?.getCursorPosition())
+  }, [openPicker])
+
   return (
     <KeyboardAvoidingView
       testID="composePostView"
@@ -456,7 +461,19 @@ export const ComposePost = observer(function ComposePost({
               <OpenCameraBtn gallery={gallery} />
             </>
           ) : null}
-          {!isMobile ? <EmojiPickerButton /> : null}
+          {!isMobile ? (
+            <Pressable
+              onPress={onEmojiButtonPress}
+              accessibilityRole="button"
+              accessibilityLabel={_(msg`Open emoji picker`)}
+              accessibilityHint={_(msg`Open emoji picker`)}>
+              <FontAwesomeIcon
+                icon={['far', 'face-smile']}
+                color={pal.colors.link}
+                size={22}
+              />
+            </Pressable>
+          ) : null}
           <View style={s.flex1} />
           <SelectLangBtn />
           <CharProgress count={graphemeLength} />
diff --git a/src/view/com/composer/text-input/TextInput.tsx b/src/view/com/composer/text-input/TextInput.tsx
index 7e39f6aed..57bfd0a88 100644
--- a/src/view/com/composer/text-input/TextInput.tsx
+++ b/src/view/com/composer/text-input/TextInput.tsx
@@ -32,6 +32,7 @@ import {POST_IMG_MAX} from 'lib/constants'
 export interface TextInputRef {
   focus: () => void
   blur: () => void
+  getCursorPosition: () => DOMRect | undefined
 }
 
 interface TextInputProps extends ComponentProps<typeof RNTextInput> {
@@ -74,6 +75,7 @@ export const TextInput = forwardRef(function TextInputImpl(
     blur: () => {
       textInput.current?.blur()
     },
+    getCursorPosition: () => undefined, // Not implemented on native
   }))
 
   const onChangeText = useCallback(
diff --git a/src/view/com/composer/text-input/TextInput.web.tsx b/src/view/com/composer/text-input/TextInput.web.tsx
index 206a3205b..ec3a042a3 100644
--- a/src/view/com/composer/text-input/TextInput.web.tsx
+++ b/src/view/com/composer/text-input/TextInput.web.tsx
@@ -22,6 +22,7 @@ import {useActorAutocompleteFn} from '#/state/queries/actor-autocomplete'
 export interface TextInputRef {
   focus: () => void
   blur: () => void
+  getCursorPosition: () => DOMRect | undefined
 }
 
 interface TextInputProps {
@@ -169,6 +170,10 @@ export const TextInput = React.forwardRef(function TextInputImpl(
   React.useImperativeHandle(ref, () => ({
     focus: () => {}, // TODO
     blur: () => {}, // TODO
+    getCursorPosition: () => {
+      const pos = editor?.state.selection.$anchor.pos
+      return pos ? editor?.view.coordsAtPos(pos) : undefined
+    },
   }))
 
   return (
diff --git a/src/view/com/composer/text-input/web/EmojiPicker.web.tsx b/src/view/com/composer/text-input/web/EmojiPicker.web.tsx
index f4b2d99b0..6d16403ff 100644
--- a/src/view/com/composer/text-input/web/EmojiPicker.web.tsx
+++ b/src/view/com/composer/text-input/web/EmojiPicker.web.tsx
@@ -1,11 +1,17 @@
 import React from 'react'
 import Picker from '@emoji-mart/react'
-import {StyleSheet, TouchableWithoutFeedback, View} from 'react-native'
-import * as DropdownMenu from '@radix-ui/react-dropdown-menu'
+import {
+  StyleSheet,
+  TouchableWithoutFeedback,
+  useWindowDimensions,
+  View,
+} from 'react-native'
 import {textInputWebEmitter} from '../TextInput.web'
-import {FontAwesomeIcon} from '@fortawesome/react-native-fontawesome'
-import {usePalette} from 'lib/hooks/usePalette'
-import {useMediaQuery} from 'react-responsive'
+
+const HEIGHT_OFFSET = 40
+const WIDTH_OFFSET = 100
+const PICKER_HEIGHT = 435 + HEIGHT_OFFSET
+const PICKER_WIDTH = 350 + WIDTH_OFFSET
 
 export type Emoji = {
   aliases?: string[]
@@ -18,59 +24,87 @@ export type Emoji = {
   unified: string
 }
 
-export function EmojiPickerButton() {
-  const pal = usePalette('default')
-  const [open, setOpen] = React.useState(false)
-  const onOpenChange = (o: boolean) => {
-    setOpen(o)
-  }
-  const close = () => {
-    setOpen(false)
-  }
+export interface EmojiPickerState {
+  isOpen: boolean
+  pos: {top: number; left: number; right: number; bottom: number}
+}
 
-  return (
-    <DropdownMenu.Root open={open} onOpenChange={onOpenChange}>
-      <DropdownMenu.Trigger style={styles.trigger}>
-        <FontAwesomeIcon
-          icon={['far', 'face-smile']}
-          color={pal.colors.link}
-          size={22}
-        />
-      </DropdownMenu.Trigger>
-
-      <DropdownMenu.Portal>
-        <EmojiPicker close={close} />
-      </DropdownMenu.Portal>
-    </DropdownMenu.Root>
-  )
+interface IProps {
+  state: EmojiPickerState
+  close: () => void
 }
 
-export function EmojiPicker({close}: {close: () => void}) {
+export function EmojiPicker({state, close}: IProps) {
+  const {height, width} = useWindowDimensions()
+
+  const isShiftDown = React.useRef(false)
+
+  const position = React.useMemo(() => {
+    const fitsBelow = state.pos.top + PICKER_HEIGHT < height
+    const fitsAbove = PICKER_HEIGHT < state.pos.top
+    const placeOnLeft = PICKER_WIDTH < state.pos.left
+    const screenYMiddle = height / 2 - PICKER_HEIGHT / 2
+
+    if (fitsBelow) {
+      return {
+        top: state.pos.top + HEIGHT_OFFSET,
+      }
+    } else if (fitsAbove) {
+      return {
+        bottom: height - state.pos.bottom + HEIGHT_OFFSET,
+      }
+    } else {
+      return {
+        top: screenYMiddle,
+        left: placeOnLeft ? state.pos.left - PICKER_WIDTH : undefined,
+        right: !placeOnLeft
+          ? width - state.pos.right - PICKER_WIDTH
+          : undefined,
+      }
+    }
+  }, [state.pos, height, width])
+
+  React.useEffect(() => {
+    if (!state.isOpen) return
+
+    const onKeyDown = (e: KeyboardEvent) => {
+      if (e.key === 'Shift') {
+        isShiftDown.current = true
+      }
+    }
+    const onKeyUp = (e: KeyboardEvent) => {
+      if (e.key === 'Shift') {
+        isShiftDown.current = false
+      }
+    }
+    window.addEventListener('keydown', onKeyDown, true)
+    window.addEventListener('keyup', onKeyUp, true)
+
+    return () => {
+      window.removeEventListener('keydown', onKeyDown, true)
+      window.removeEventListener('keyup', onKeyUp, true)
+    }
+  }, [state.isOpen])
+
   const onInsert = (emoji: Emoji) => {
     textInputWebEmitter.emit('emoji-inserted', emoji)
-    close()
+
+    if (!isShiftDown.current) {
+      close()
+    }
   }
-  const reducedPadding = useMediaQuery({query: '(max-height: 750px)'})
-  const noPadding = useMediaQuery({query: '(max-height: 550px)'})
-  const noPicker = useMediaQuery({query: '(max-height: 350px)'})
+
+  if (!state.isOpen) return null
 
   return (
-    // eslint-disable-next-line react-native-a11y/has-valid-accessibility-descriptors
-    <TouchableWithoutFeedback onPress={close} accessibilityViewIsModal>
+    <TouchableWithoutFeedback
+      accessibilityRole="button"
+      onPress={close}
+      accessibilityViewIsModal>
       <View style={styles.mask}>
         {/* eslint-disable-next-line react-native-a11y/has-valid-accessibility-descriptors */}
-        <TouchableWithoutFeedback
-          onPress={e => {
-            e.stopPropagation() // prevent event from bubbling up to the mask
-          }}>
-          <View
-            style={[
-              styles.picker,
-              {
-                paddingTop: noPadding ? 0 : reducedPadding ? 150 : 325,
-                display: noPicker ? 'none' : 'flex',
-              },
-            ]}>
+        <TouchableWithoutFeedback onPress={e => e.stopPropagation()}>
+          <View style={[{position: 'absolute'}, position]}>
             <Picker
               data={async () => {
                 return (await import('./EmojiPickerData.json')).default
@@ -93,15 +127,7 @@ const styles = StyleSheet.create({
     right: 0,
     width: '100%',
     height: '100%',
-  },
-  trigger: {
-    backgroundColor: 'transparent',
-    // @ts-ignore web only -prf
-    border: 'none',
-    paddingTop: 4,
-    paddingLeft: 12,
-    paddingRight: 12,
-    cursor: 'pointer',
+    alignItems: 'center',
   },
   picker: {
     marginHorizontal: 'auto',
diff --git a/src/view/shell/Composer.web.tsx b/src/view/shell/Composer.web.tsx
index 73f9f540e..ed64bc799 100644
--- a/src/view/shell/Composer.web.tsx
+++ b/src/view/shell/Composer.web.tsx
@@ -5,6 +5,10 @@ import {ComposePost} from '../com/composer/Composer'
 import {useComposerState} from 'state/shell/composer'
 import {usePalette} from 'lib/hooks/usePalette'
 import {useWebMediaQueries} from 'lib/hooks/useWebMediaQueries'
+import {
+  EmojiPicker,
+  EmojiPickerState,
+} from 'view/com/composer/text-input/web/EmojiPicker.web.tsx'
 
 const BOTTOM_BAR_HEIGHT = 61
 
@@ -13,6 +17,26 @@ export function Composer({}: {winHeight: number}) {
   const {isMobile} = useWebMediaQueries()
   const state = useComposerState()
 
+  const [pickerState, setPickerState] = React.useState<EmojiPickerState>({
+    isOpen: false,
+    pos: {top: 0, left: 0, right: 0, bottom: 0},
+  })
+
+  const onOpenPicker = React.useCallback((pos: DOMRect | undefined) => {
+    if (!pos) return
+    setPickerState({
+      isOpen: true,
+      pos,
+    })
+  }, [])
+
+  const onClosePicker = React.useCallback(() => {
+    setPickerState(prev => ({
+      ...prev,
+      isOpen: false,
+    }))
+  }, [])
+
   // rendering
   // =
 
@@ -41,8 +65,10 @@ export function Composer({}: {winHeight: number}) {
           quote={state.quote}
           onPost={state.onPost}
           mention={state.mention}
+          openPicker={onOpenPicker}
         />
       </Animated.View>
+      <EmojiPicker state={pickerState} close={onClosePicker} />
     </Animated.View>
   )
 }