Fix slow Hosting Provider dialog (#7594)

* avoid portal perf pitfall

* add dep array

src/components/forms/HostingProvider.tsx

@@ -71,10 +71,10 @@ export function HostingProvider({
             a.flex_row,
             a.align_center,
             a.rounded_sm,
-            a.px_md,
+            a.pl_md,
             a.pr_sm,
             a.gap_xs,
-            {paddingVertical: isAndroid ? 14 : 9},
+            {paddingVertical: isAndroid ? 14 : 8},
           ]}
           onPress={onPressSelectService}>
           {({hovered, pressed}) => {

src/view/com/auth/server-input/index.tsx

@@ -1,4 +1,4 @@
-import React from 'react'
+import {useCallback, useImperativeHandle, useRef, useState} from 'react'
 import {View} from 'react-native'
 import {useWindowDimensions} from 'react-native'
 import {msg, Trans} from '@lingui/macro'
@@ -24,28 +24,74 @@ export function ServerInputDialog({
   control: Dialog.DialogOuterProps['control']
   onSelect: (url: string) => void
 }) {
+  const {height} = useWindowDimensions()
+  const formRef = useRef<DialogInnerRef>(null)
+
+  // persist these options between dialog open/close
+  const [fixedOption, setFixedOption] = useState(BSKY_SERVICE)
+  const [previousCustomAddress, setPreviousCustomAddress] = useState('')
+
+  const onClose = useCallback(() => {
+    const result = formRef.current?.getFormState()
+    if (result) {
+      onSelect(result)
+      if (result !== BSKY_SERVICE) {
+        setPreviousCustomAddress(result)
+      }
+    }
+  }, [onSelect])
+
+  return (
+    <Dialog.Outer
+      control={control}
+      onClose={onClose}
+      nativeOptions={{minHeight: height / 2}}>
+      <Dialog.Handle />
+      <DialogInner
+        formRef={formRef}
+        fixedOption={fixedOption}
+        setFixedOption={setFixedOption}
+        initialCustomAddress={previousCustomAddress}
+      />
+    </Dialog.Outer>
+  )
+}
+
+type DialogInnerRef = {getFormState: () => string | null}
+
+function DialogInner({
+  formRef,
+  fixedOption,
+  setFixedOption,
+  initialCustomAddress,
+}: {
+  formRef: React.Ref<DialogInnerRef>
+  fixedOption: string
+  setFixedOption: (opt: string) => void
+  initialCustomAddress: string
+}) {
+  const control = Dialog.useDialogContext()
   const {_} = useLingui()
   const t = useTheme()
-  const {height} = useWindowDimensions()
+  const {accounts} = useSession()
   const {gtMobile} = useBreakpoints()
-  const [pdsAddressHistory, setPdsAddressHistory] = React.useState<string[]>(
+  const [customAddress, setCustomAddress] = useState(initialCustomAddress)
+  const [pdsAddressHistory, setPdsAddressHistory] = useState<string[]>(
     persisted.get('pdsAddressHistory') || [],
   )
-  const [fixedOption, setFixedOption] = React.useState([BSKY_SERVICE])
-  const [customAddress, setCustomAddress] = React.useState('')
-  const {accounts} = useSession()
 
-  const isFirstTimeUser = accounts.length === 0
-
-  const onClose = React.useCallback(() => {
+  useImperativeHandle(
+    formRef,
+    () => ({
+      getFormState: () => {
         let url
-    if (fixedOption[0] === 'custom') {
+        if (fixedOption === 'custom') {
           url = customAddress.trim().toLowerCase()
           if (!url) {
-        return
+            return null
           }
         } else {
-      url = fixedOption[0]
+          url = fixedOption
         }
         if (!url.startsWith('http://') && !url.startsWith('https://')) {
           if (url === 'localhost' || url.startsWith('localhost:')) {
@@ -55,7 +101,7 @@ export function ServerInputDialog({
           }
         }
 
-    if (fixedOption[0] === 'custom') {
+        if (fixedOption === 'custom') {
           if (!pdsAddressHistory.includes(url)) {
             const newHistory = [url, ...pdsAddressHistory.slice(0, 4)]
             setPdsAddressHistory(newHistory)
@@ -63,21 +109,15 @@ export function ServerInputDialog({
           }
         }
 
-    onSelect(url)
-  }, [
-    fixedOption,
-    customAddress,
-    onSelect,
-    pdsAddressHistory,
-    setPdsAddressHistory,
-  ])
+        return url
+      },
+    }),
+    [customAddress, fixedOption, pdsAddressHistory],
+  )
+
+  const isFirstTimeUser = accounts.length === 0
 
   return (
-    <Dialog.Outer
-      control={control}
-      onClose={onClose}
-      nativeOptions={{minHeight: height / 2}}>
-      <Dialog.Handle />
     <Dialog.ScrollableInner
       accessibilityDescribedBy="dialog-description"
       accessibilityLabelledBy="dialog-title">
@@ -87,34 +127,30 @@ export function ServerInputDialog({
         </Text>
         <ToggleButton.Group
           label="Preferences"
-            values={fixedOption}
-            onChange={setFixedOption}>
+          values={[fixedOption]}
+          onChange={values => setFixedOption(values[0])}>
           <ToggleButton.Button name={BSKY_SERVICE} label={_(msg`Bluesky`)}>
-              <ToggleButton.ButtonText>
-                {_(msg`Bluesky`)}
-              </ToggleButton.ButtonText>
+            <ToggleButton.ButtonText>{_(msg`Bluesky`)}</ToggleButton.ButtonText>
           </ToggleButton.Button>
           <ToggleButton.Button
             testID="customSelectBtn"
             name="custom"
             label={_(msg`Custom`)}>
-              <ToggleButton.ButtonText>
-                {_(msg`Custom`)}
-              </ToggleButton.ButtonText>
+            <ToggleButton.ButtonText>{_(msg`Custom`)}</ToggleButton.ButtonText>
           </ToggleButton.Button>
         </ToggleButton.Group>
 
-          {fixedOption[0] === BSKY_SERVICE && isFirstTimeUser && (
+        {fixedOption === BSKY_SERVICE && isFirstTimeUser && (
           <Admonition type="tip">
             <Trans>
-                Bluesky is an open network where you can choose your own
-                provider. If you're new here, we recommend sticking with the
-                default Bluesky Social option.
+              Bluesky is an open network where you can choose your own provider.
+              If you're new here, we recommend sticking with the default Bluesky
+              Social option.
             </Trans>
           </Admonition>
         )}
 
-          {fixedOption[0] === 'custom' && (
+        {fixedOption === 'custom' && (
           <View
             style={[
               a.border,
@@ -195,6 +231,5 @@ export function ServerInputDialog({
         </View>
       </View>
     </Dialog.ScrollableInner>
-    </Dialog.Outer>
   )
 }