refactor search results page for improved performance

package-lock.json

@@ -8056,9 +8056,9 @@
             "integrity": "sha512-XRHhGH5aM4lSenX4zZBa07JaszJGXeF8cv1KY314Q4qJWOihKWLpkdvwqwsBieZ2iy8DPhdAVioQzw8JLD/Okw=="
         },
         "react-native-fast-image": {
-            "version": "5.4.2",
-            "resolved": "https://registry.npmjs.org/react-native-fast-image/-/react-native-fast-image-5.4.2.tgz",
-            "integrity": "sha512-S4E96Lwmx6z6QD3MaAuP7cNcXRLfgEUYU2GB694TbGEoOjk/FO1OnfbxfFp0vUs/klr4HJwACcwihPPxrFTt8w=="
+            "version": "6.1.1",
+            "resolved": "https://registry.npmjs.org/react-native-fast-image/-/react-native-fast-image-6.1.1.tgz",
+            "integrity": "sha512-9bYUY8GLKpuTF9WOC28VM/ceH0+GyV60g3bcwYeiq0A+oDBVyVlj/ovMaJqRxHII6GQYX0WbTkiT5kWtPCtWkA=="
         },
         "react-native-fs": {
             "version": "2.13.3",

package.json

@@ -24,7 +24,7 @@
         "react-native-country-picker-modal": "^0.6.2",
         "react-native-document-picker": "^2.3.0",
         "react-native-exception-handler": "2.9.0",
-        "react-native-fast-image": "^5.0.3",
+        "react-native-fast-image": "^6.1.1",
         "react-native-fs": "^2.13.3",
         "react-native-gesture-handler": "^1.1.0",
         "react-native-image-zoom-viewer": "^2.2.5",

src/component/fileItem/view.js

@@ -85,7 +85,6 @@ class FileItem extends React.PureComponent {
             duration={duration}
             title={title}
             thumbnail={thumbnail}
-            blurRadius={obscure ? 15 : 0}
             resizeMode="cover"
             isResolvingUri={isResolvingUri}
             style={mediaStyle}

src/component/fileItemMedia/view.js

@@ -59,34 +59,13 @@ class FileItemMedia extends React.PureComponent {
 
   render() {
     let style = this.props.style;
-    const { blurRadius, duration, isResolvingUri, thumbnail, title, resizeMode } = this.props;
+    const { duration, isResolvingUri, thumbnail, title, resizeMode } = this.props;
     const atStyle = this.state.autoThumbStyle;
     if (this.isThumbnailValid(thumbnail) && !this.state.imageLoadFailed) {
       if (style == null) {
         style = fileItemMediaStyle.thumbnail;
       }
 
-      if (blurRadius > 0) {
-        // No blur radius support in FastImage yet
-        return (
-          <View style={style}>
-            <Image
-              source={{ uri: thumbnail }}
-              blurRadius={blurRadius}
-              resizeMode={resizeMode || 'cover'}
-              style={fileItemMediaStyle.image}
-            />
-            {duration && (
-              <VideoDuration
-                duration={duration}
-                style={fileItemMediaStyle.duration}
-                textStyle={fileItemMediaStyle.durationText}
-              />
-            )}
-          </View>
-        );
-      }
-
       return (
         <View style={style}>
           <FastImage

src/component/fileListItem/view.js

@@ -118,7 +118,6 @@ class FileListItem extends React.PureComponent {
         >
           <FileItemMedia
             style={fileListStyle.thumbnail}
-            blurRadius={obscure ? 15 : 0}
             duration={duration}
             resizeMode="cover"
             title={title || name}

src/component/nsfwOverlay/view.js

@@ -5,7 +5,7 @@ import discoverStyle from '../../styles/discover';
 class NsfwOverlay extends React.PureComponent {
   render() {
     return (
-      <TouchableOpacity style={discoverStyle.overlay} activeOpacity={0.95} onPress={this.props.onPress}>
+      <TouchableOpacity style={discoverStyle.overlay} activeOpacity={1} onPress={this.props.onPress}>
         <Text style={discoverStyle.overlayText}>
           This content is Not Safe For Work. To view adult content, please change your Settings.
         </Text>

src/page/search/index.js

@@ -10,19 +10,21 @@ import {
 } from 'lbry-redux';
 import { doPushDrawerStack, doSetPlayerVisible } from 'redux/actions/drawer';
 import { selectCurrentRoute } from 'redux/selectors/drawer';
-import Constants from 'constants';
+import Constants from 'constants'; // eslint-disable-line node/no-deprecated-api
 import SearchPage from './view';
 
+const numSearchResults = 50;
+
 const select = state => ({
   currentRoute: selectCurrentRoute(state),
   isSearching: selectIsSearching(state),
   query: selectSearchValue(state),
-  uris: makeSelectSearchUris(makeSelectQueryWithOptions(null, 25)(state))(state),
+  uris: makeSelectSearchUris(makeSelectQueryWithOptions(null, numSearchResults)(state))(state),
   urisByQuery: selectSearchUrisByQuery(state),
 });
 
 const perform = dispatch => ({
-  search: query => dispatch(doSearch(query, 25)),
+  search: query => dispatch(doSearch(query, numSearchResults)),
   updateSearchQuery: query => dispatch(doUpdateSearchQuery(query)),
   pushDrawerStack: () => dispatch(doPushDrawerStack(Constants.DRAWER_ROUTE_SEARCH)),
   setPlayerVisible: () => dispatch(doSetPlayerVisible(false)),

src/page/search/view.js

@@ -1,6 +1,6 @@
 import React from 'react';
 import { Lbry, parseURI, normalizeURI, isURIValid } from 'lbry-redux';
-import { ActivityIndicator, Button, NativeModules, Text, TextInput, View, ScrollView } from 'react-native';
+import { ActivityIndicator, Button, FlatList, NativeModules, Text, TextInput, View } from 'react-native';
 import { navigateToUri } from 'utils/helper';
 import Colors from 'styles/colors';
 import Constants from 'constants'; // eslint-disable-line node/no-deprecated-api
@@ -84,6 +84,33 @@ class SearchPage extends React.PureComponent {
     search(keywords);
   };
 
+  listHeaderComponent = () => {
+    const { navigation } = this.props;
+    const { currentUri } = this.state;
+
+    return (
+      <FileListItem
+        uri={currentUri}
+        featuredResult
+        style={searchStyle.featuredResultItem}
+        navigation={navigation}
+        onPress={() => navigateToUri(navigation, currentUri)}
+      />
+    );
+  };
+
+  listEmptyComponent = () => {
+    const { query } = this.props;
+    return (
+      <View style={searchStyle.noResults}>
+        <Text style={searchStyle.noResultsText}>
+          There are no results to display for <Text style={searchStyle.boldText}>{query}</Text>. Please try a different
+          search term.
+        </Text>
+      </View>
+    );
+  };
+
   render() {
     const { isSearching, navigation, query, uris, urisByQuery } = this.props;
 
@@ -96,37 +123,21 @@ class SearchPage extends React.PureComponent {
           </View>
         )}
 
-        {!isSearching && (
-          <ScrollView
-            style={searchStyle.scrollContainer}
-            contentContainerStyle={searchStyle.scrollPadding}
-            keyboardShouldPersistTaps={'handled'}
-          >
-            {this.state.currentUri && (
-              <FileListItem
-                key={this.state.currentUri}
-                uri={this.state.currentUri}
-                featuredResult
-                style={searchStyle.featuredResultItem}
-                navigation={navigation}
-                onPress={() => navigateToUri(navigation, this.state.currentUri)}
-              />
-            )}
-            {uris && uris.length
-              ? uris.map(uri => (
-                <FileListItem key={uri} uri={uri} style={searchStyle.resultItem} navigation={navigation} />
-              ))
-              : null}
-            {(!uris || uris.length === 0) && (
-              <View style={searchStyle.noResults}>
-                <Text style={searchStyle.noResultsText}>
-                  There are no results to display for <Text style={searchStyle.boldText}>{query}</Text>. Please try a
-                  different search term.
-                </Text>
-              </View>
-            )}
-          </ScrollView>
-        )}
+        <FlatList
+          style={searchStyle.scrollContainer}
+          contentContainerStyle={searchStyle.scrollPadding}
+          keyboardShouldPersistTaps={'handled'}
+          data={uris}
+          keyExtractor={(item, index) => item}
+          initialNumToRender={10}
+          maxToRenderPerBatch={20}
+          removeClippedSubviews
+          ListEmptyComponent={!isSearching ? this.listEmptyComponent() : null}
+          ListHeaderComponent={this.listHeaderComponent()}
+          renderItem={({ item }) => (
+            <FileListItem key={item} uri={item} style={searchStyle.resultItem} navigation={navigation} />
+          )}
+        />
         <FloatingWalletBalance navigation={navigation} />
       </View>
     );

src/styles/discover.js

@@ -188,8 +188,8 @@ const discoverStyle = StyleSheet.create({
     position: 'absolute',
     left: 0,
     top: 0,
-    width: '100%',
-    height: '100%',
+    right: 0,
+    bottom: 0,
   },
   overlayText: {
     color: Colors.White,

src/styles/search.js

@@ -12,6 +12,11 @@ const searchStyle = StyleSheet.create({
   },
   busyContainer: {
     flex: 1,
+    position: 'absolute',
+    top: 60,
+    left: 0,
+    right: 0,
+    bottom: 0,
     alignItems: 'center',
     justifyContent: 'center',
   },