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

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>
   )
 }