drag to rearrange pinned items

src/view/screens/PinnedFeeds.tsx

@@ -0,0 +1,134 @@
+import React, {useCallback, useMemo} from 'react'
+import {
+  RefreshControl,
+  StyleSheet,
+  View,
+  ActivityIndicator,
+  Pressable,
+} from 'react-native'
+import {useFocusEffect} from '@react-navigation/native'
+import {NativeStackScreenProps} from '@react-navigation/native-stack'
+import {useAnalytics} from 'lib/analytics'
+import {usePalette} from 'lib/hooks/usePalette'
+import {CommonNavigatorParams} from 'lib/routes/types'
+import {observer} from 'mobx-react-lite'
+import {useStores} from 'state/index'
+import {withAuthRequired} from 'view/com/auth/withAuthRequired'
+import {ViewHeader} from 'view/com/util/ViewHeader'
+import {CenteredView} from 'view/com/util/Views'
+import {Text} from 'view/com/util/text/Text'
+import {isDesktopWeb} from 'platform/detection'
+import {s} from 'lib/styles'
+import DraggableFlatList, {
+  ShadowDecorator,
+  ScaleDecorator,
+} from 'react-native-draggable-flatlist'
+import {SavedFeedItem} from 'view/com/algos/SavedFeedItem'
+import {FontAwesomeIcon} from '@fortawesome/react-native-fontawesome'
+
+type Props = NativeStackScreenProps<CommonNavigatorParams, 'PinnedFeeds'>
+
+export const PinnedFeeds = withAuthRequired(
+  observer(({}: Props) => {
+    // hooks for global items
+    const pal = usePalette('default')
+    const rootStore = useStores()
+    const {screen} = useAnalytics()
+
+    // hooks for local
+    const savedFeeds = useMemo(() => rootStore.me.savedFeeds, [rootStore])
+    useFocusEffect(
+      useCallback(() => {
+        screen('SavedFeeds')
+        rootStore.shell.setMinimalShellMode(false)
+        savedFeeds.refresh()
+      }, [screen, rootStore, savedFeeds]),
+    )
+    const _ListEmptyComponent = () => {
+      return (
+        <View
+          style={[
+            pal.border,
+            !isDesktopWeb && s.flex1,
+            pal.viewLight,
+            styles.empty,
+          ]}>
+          <Text type="lg" style={[pal.text]}>
+            You don't have any pinned feeds. To pin a feed, go back to the Saved
+            Feeds screen and click the pin icon!
+          </Text>
+        </View>
+      )
+    }
+    const _ListFooterComponent = () => {
+      return (
+        <View style={styles.footer}>
+          {savedFeeds.isLoading && <ActivityIndicator />}
+        </View>
+      )
+    }
+
+    return (
+      <CenteredView style={[s.flex1]}>
+        <ViewHeader title="Arrange Pinned Feeds" showOnDesktop />
+        <DraggableFlatList
+          containerStyle={[!isDesktopWeb && s.flex1]}
+          data={savedFeeds.pinned}
+          keyExtractor={item => item.data.uri}
+          refreshing={savedFeeds.isRefreshing}
+          refreshControl={
+            <RefreshControl
+              refreshing={savedFeeds.isRefreshing}
+              onRefresh={() => savedFeeds.refresh()}
+              tintColor={pal.colors.text}
+              titleColor={pal.colors.text}
+            />
+          }
+          renderItem={({item, drag}) => (
+            <ScaleDecorator>
+              <ShadowDecorator>
+                <Pressable
+                  accessibilityRole="button"
+                  onLongPress={drag}
+                  style={styles.itemContainer}>
+                  <FontAwesomeIcon icon="bars" size={20} style={styles.icon} />
+                  <SavedFeedItem item={item} savedFeeds={savedFeeds} />
+                </Pressable>
+              </ShadowDecorator>
+            </ScaleDecorator>
+          )}
+          initialNumToRender={10}
+          ListFooterComponent={_ListFooterComponent}
+          ListEmptyComponent={_ListEmptyComponent}
+          extraData={savedFeeds.isLoading}
+          onDragEnd={({data}) => savedFeeds.reorderPinnedFeeds(data)}
+          // @ts-ignore our .web version only -prf
+          desktopFixedHeight
+        />
+      </CenteredView>
+    )
+  }),
+)
+
+const styles = StyleSheet.create({
+  footer: {
+    paddingVertical: 20,
+  },
+  empty: {
+    paddingHorizontal: 20,
+    paddingVertical: 20,
+    borderRadius: 16,
+    marginHorizontal: 24,
+    marginTop: 10,
+  },
+  itemContainer: {
+    flex: 1,
+    flexDirection: 'row',
+    alignItems: 'center',
+    marginLeft: 18,
+  },
+  item: {
+    borderTopWidth: 0,
+  },
+  icon: {marginRight: 10},
+})