New Web Layout (#2126)

* Rip out virtualization on the web

* Screw around with layout

* onEndReached

* scrollToOffset

* Fix background

* onScroll

* Shell bars

* More scroll

* Fixes

* position: sticky

* Clean up 1

* Clean up 2

* Undo PagerWithHeader changes and fork it

* Trim down both versions

* Cleanup 3

* Memoize, lint

* Don't scroll away modal or lightbox

* Add content-visibility for rows

* Fix composer

* Fix types

* Fix borked scroll animation

* Fixes to layout

* More FlatList parity

* Layout fixes

* Fix more layout

* More layout

* More layouts

* Fix profile layout

* Remove onScroll

* Display: none inactive pages

* Add an intermediate List component

* Fix type

* Add onScrolledDownChange

* Port pager to use onScrolledDownChange

* Fix on mobile

* Don't pass down onScroll (replacement TBD)

* Remove resetMainScroll

* Replace onMainScroll with MainScrollProvider

* Hook ScrollProvider to pager

* Fix the remaining special case

* Optimize a bit

* Enforce that onScroll cannot be passed

* Keep value updated even if no handler

* Also memo it

* Move the fork to List.web

* Add scroll handler

* Consolidate List props a bit

* More stuff

* Rm unused

* Simplify

* Make isScrolledDown work

* Oops

* Fixes

* Hook up context scroll handlers

* Scroll restore for tabs

* Route scroll restoration POC

* Fix some issues with restoration

* Remove bad idea

* Fix pager scroll restoration

* Undo accidental locale changes

* onContentSizeChange

* Scroll to post

* Better positioning

* Layout fixes

* Factor out navigation stuff

* Cleanup

* Oops

* Cleanup

* Fixes and types

* Naming etc

* Fix crash

* Match FL semantics

* Snap the header scroll on the web

* Add body scroll lock

* Scroll to top on search

* Fix types

* Typos

* Fix Safari overflow

* Fix search positioning

* Add border

* Patch react navigation

* Revert "Patch react navigation"

This reverts commit 62516ed9c20410d166e1582b43b656c819495ddc.

* fixes

* scroll

* scrollbar

* cleanup unrelated

* undo unrel

* flatter

* Fix css

* twk

src/view/shell/Composer.web.tsx

@@ -5,6 +5,7 @@ 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 {useWebBodyScrollLock} from '#/lib/hooks/useWebBodyScrollLock'
 import {
   EmojiPicker,
   EmojiPickerState,
@@ -16,6 +17,8 @@ export function Composer({}: {winHeight: number}) {
   const pal = usePalette('default')
   const {isMobile} = useWebMediaQueries()
   const state = useComposerState()
+  const isActive = !!state
+  useWebBodyScrollLock(isActive)
 
   const [pickerState, setPickerState] = React.useState<EmojiPickerState>({
     isOpen: false,
@@ -40,7 +43,7 @@ export function Composer({}: {winHeight: number}) {
   // rendering
   // =
 
-  if (!state) {
+  if (!isActive) {
     return <View />
   }
 
@@ -75,7 +78,8 @@ export function Composer({}: {winHeight: number}) {
 
 const styles = StyleSheet.create({
   mask: {
-    position: 'absolute',
+    // @ts-ignore
+    position: 'fixed',
     top: 0,
     left: 0,
     width: '100%',

src/view/shell/bottom-bar/BottomBarStyles.tsx

@@ -12,6 +12,10 @@ export const styles = StyleSheet.create({
     paddingLeft: 5,
     paddingRight: 10,
   },
+  bottomBarWeb: {
+    // @ts-ignore web-only
+    position: 'fixed',
+  },
   ctrl: {
     flex: 1,
     paddingTop: 13,

src/view/shell/bottom-bar/BottomBarWeb.tsx

@@ -57,6 +57,7 @@ export function BottomBarWeb() {
     <Animated.View
       style={[
         styles.bottomBar,
+        styles.bottomBarWeb,
         pal.view,
         pal.border,
         {paddingBottom: clamp(safeAreaInsets.bottom, 15, 30)},

src/view/shell/desktop/LeftNav.tsx

@@ -442,10 +442,11 @@ export function DesktopLeftNav() {
 
 const styles = StyleSheet.create({
   leftNav: {
-    position: 'absolute',
+    // @ts-ignore web only
+    position: 'fixed',
     top: 10,
     // @ts-ignore web only
-    right: 'calc(50vw + 312px)',
+    left: 'calc(50vw - 300px - 220px - 20px)',
     width: 220,
     // @ts-ignore web only
     maxHeight: 'calc(100vh - 10px)',

src/view/shell/desktop/RightNav.tsx

@@ -177,9 +177,10 @@ function InviteCodes() {
 
 const styles = StyleSheet.create({
   rightNav: {
-    position: 'absolute',
     // @ts-ignore web only
-    left: 'calc(50vw + 320px)',
+    position: 'fixed',
+    // @ts-ignore web only
+    left: 'calc(50vw + 300px + 20px)',
     width: 300,
     maxHeight: '100%',
     overflowY: 'auto',

src/view/shell/index.web.tsx

@@ -15,6 +15,7 @@ import {useAuxClick} from 'lib/hooks/useAuxClick'
 import {t} from '@lingui/macro'
 import {useIsDrawerOpen, useSetDrawerOpen} from '#/state/shell'
 import {useCloseAllActiveElements} from '#/state/util'
+import {useWebBodyScrollLock} from '#/lib/hooks/useWebBodyScrollLock'
 import {Outlet as PortalOutlet} from '#/components/Portal'
 
 function ShellInner() {
@@ -24,6 +25,7 @@ function ShellInner() {
   const navigator = useNavigation<NavigationProp>()
   const closeAllActiveElements = useCloseAllActiveElements()
 
+  useWebBodyScrollLock(isDrawerOpen)
   useAuxClick()
 
   useEffect(() => {
@@ -34,12 +36,10 @@ function ShellInner() {
   }, [navigator, closeAllActiveElements])
 
   return (
-    <View style={[s.hContentRegion, {overflow: 'hidden'}]}>
-      <View style={s.hContentRegion}>
-        <ErrorBoundary>
-          <FlatNavigator />
-        </ErrorBoundary>
-      </View>
+    <>
+      <ErrorBoundary>
+        <FlatNavigator />
+      </ErrorBoundary>
       <Composer winHeight={0} />
       <ModalsContainer />
       <PortalOutlet />
@@ -55,7 +55,7 @@ function ShellInner() {
           </View>
         </TouchableOpacity>
       )}
-    </View>
+    </>
   )
 }
 
@@ -78,7 +78,8 @@ const styles = StyleSheet.create({
     backgroundColor: colors.black, // TODO
   },
   drawerMask: {
-    position: 'absolute',
+    // @ts-ignore web only
+    position: 'fixed',
     width: '100%',
     height: '100%',
     top: 0,
@@ -87,7 +88,8 @@ const styles = StyleSheet.create({
   },
   drawerContainer: {
     display: 'flex',
-    position: 'absolute',
+    // @ts-ignore web only
+    position: 'fixed',
     top: 0,
     left: 0,
     height: '100%',