Support 3 levels of navigation

Summary: Changelog: [Internal] RNTester to support 3 levels of navigation

Reviewed By: kacieb

Differential Revision: D29481463

fbshipit-source-id: e48281cce7fccd7096446c5f0f5583f2588b5028

packages/rn-tester/js/RNTesterAppShared.js

@@ -111,7 +111,13 @@ const RNTesterApp = (): React.Node => {
   );
   const colorScheme = useColorScheme();
 
-  const {activeModuleKey, screen, bookmarks, recentlyUsed} = state;
+  const {
+    activeModuleKey,
+    activeModuleExampleKey,
+    screen,
+    bookmarks,
+    recentlyUsed,
+  } = state;
 
   React.useEffect(() => {
     getInitialStateFromAsyncStorage(APP_STATE_KEY).then(
@@ -166,6 +172,16 @@ const RNTesterApp = (): React.Node => {
     [dispatch],
   );
 
+  const handleModuleExampleCardPress = React.useCallback(
+    exampleName => {
+      dispatch({
+        type: RNTesterActionsType.EXAMPLE_CARD_PRESS,
+        data: {key: exampleName},
+      });
+    },
+    [dispatch],
+  );
+
   const toggleBookmark = React.useCallback(
     ({exampleType, key}) => {
       dispatch({
@@ -194,6 +210,10 @@ const RNTesterApp = (): React.Node => {
 
   const activeModule =
     activeModuleKey != null ? RNTesterList.Modules[activeModuleKey] : null;
+  const activeModuleExample =
+    activeModuleExampleKey != null
+      ? activeModule?.examples.find(e => e.name === activeModuleExampleKey)
+      : null;
   const title = Screens.COMPONENTS
     ? 'Components'
     : Screens.APIS
@@ -210,7 +230,11 @@ const RNTesterApp = (): React.Node => {
             theme={theme}
             documentationURL={activeModule.documentationURL}
           />
-          <RNTesterModuleContainer module={activeModule} />
+          <RNTesterModuleContainer
+            module={activeModule}
+            example={activeModuleExample}
+            onExampleCardPress={handleModuleExampleCardPress}
+          />
         </View>
       ) : (
         <ModuleListsContainer

packages/rn-tester/js/components/RNTPressableRow.js

@@ -37,8 +37,8 @@ export default function RNTPressableRow({
   rightAddOn,
   bottomAddOn,
   onPress,
-  accessibilityLabel,
   style,
+  accessibilityLabel,
 }: Props): React.Node {
   const theme = React.useContext(RNTesterThemeContext);
   const label = accessibilityLabel ?? `${title} ${description ?? ''}`;

packages/rn-tester/js/components/RNTesterModuleContainer.js

@@ -8,9 +8,11 @@
  */
 
 const React = require('react');
-const {Platform} = require('react-native');
 const RNTesterBlock = require('./RNTesterBlock');
 const RNTesterExampleFilter = require('./RNTesterExampleFilter');
+import RNTPressableRow from './RNTPressableRow';
+import {RNTesterThemeContext} from './RNTesterTheme';
+import {StyleSheet, Platform} from 'react-native';
 
 const invariant = require('invariant');
 import ExamplePage from './ExamplePage';
@@ -30,7 +32,8 @@ function getExampleTitle(title, platform) {
 }
 
 export default function RNTesterModuleContainer(props: Props): React.Node {
-  const {module, example} = props;
+  const {module, example, onExampleCardPress} = props;
+  const theme = React.useContext(RNTesterThemeContext);
   const renderExample = (e, i) => {
     // Filter platform-specific es
     const {description, platform} = e;
@@ -38,7 +41,18 @@ export default function RNTesterModuleContainer(props: Props): React.Node {
     if (platform != null && Platform.OS !== platform) {
       return null;
     }
-    return (
+    return module.showIndividualExamples === true ? (
+      <RNTPressableRow
+        key={e.name}
+        onPress={() => onExampleCardPress(e.name)}
+        title={e.title}
+        description={description}
+        accessibilityLabel={e.name + ' ' + description}
+        style={StyleSheet.compose(styles.separator, {
+          borderBottomColor: theme.SeparatorColor,
+        })}
+      />
+    ) : (
       <RNTesterBlock
         key={i}
         title={getExampleTitle(title, platform)}
@@ -99,12 +113,7 @@ export default function RNTesterModuleContainer(props: Props): React.Node {
       documentationURL={module.documentationURL}
       category={module.category}>
       {module.showIndividualExamples === true && example != null ? (
-        <RNTesterBlock
+        example.render()
-          key={example.name}
-          title={getExampleTitle(example.title, example.platform)}
-          description={example.description}>
-          {example.render()}
-        </RNTesterBlock>
       ) : (
         <RNTesterExampleFilter
           testID="example_search"
@@ -120,3 +129,13 @@ export default function RNTesterModuleContainer(props: Props): React.Node {
     </ExamplePage>
   );
 }
+
+const styles = StyleSheet.create({
+  separator: {
+    borderBottomWidth: Platform.select({
+      ios: StyleSheet.hairlineWidth,
+      android: 0,
+    }),
+    marginHorizontal: Platform.select({ios: 15, android: 0}),
+  },
+});

packages/rn-tester/js/examples/SectionList/SectionList-onEndReached.js

@@ -39,6 +39,7 @@ export function SectionList_onEndReached(): React.Node {
 export default {
   title: 'SectionList Inverted',
   name: 'SectionList-onEndReached',
+  description: 'Test onEndReached behavior',
   render: function(): React.Element<typeof SectionList_onEndReached> {
     return <SectionList_onEndReached />;
   },

packages/rn-tester/js/examples/SectionList/SectionList-stickyHeadersEnabled.js

@@ -44,6 +44,7 @@ export function SectionList_stickySectionHeadersEnabled(): React.Node {
 export default {
   title: 'SectionList Sticky Headers Enabled',
   name: 'SectionList-stickyHeadersEnabled',
+  description: 'Toggle sticky headers on/off',
   render: function(): React.Element<
     typeof SectionList_stickySectionHeadersEnabled,
   > {

packages/rn-tester/js/examples/SectionList/SectionListBaseExample.js

@@ -129,7 +129,7 @@ const styles = StyleSheet.create({
     height: 40,
   },
   output: {
-    width: '80%',
+    flex: 1,
     fontSize: 12,
   },
   list: {

packages/rn-tester/js/examples/SectionList/SectionListIndex.js

@@ -22,6 +22,7 @@ exports.title = 'SectionList';
 exports.category = 'ListView';
 exports.documentationURL = 'https://reactnative.dev/docs/sectionlist';
 exports.description = 'Performant, scrollable list of data.';
+exports.showIndividualExamples = true;
 exports.examples = [
   ContentInset,
   onEndReached,

packages/rn-tester/js/types/RNTesterTypes.js

@@ -61,6 +61,7 @@ export type ComponentList = null | {components: string[], apis: string[]};
 
 export type RNTesterState = {
   activeModuleKey: null | string,
+  activeModuleExampleKey: null | string,
   screen: ScreenTypes,
   bookmarks: ComponentList,
   recentlyUsed: ComponentList,

packages/rn-tester/js/utils/RNTesterReducer.js

@@ -16,6 +16,7 @@ export const RNTesterActionsType = {
   BOOKMARK_PRESS: 'BOOKMARK_PRESS',
   BACK_BUTTON_PRESS: 'BACK_BUTTON_PRESS',
   MODULE_CARD_PRESS: 'MODULE_CARD_PRESS',
+  EXAMPLE_CARD_PRESS: 'EXAMPLE_CARD_PRESS',
 };
 
 const getUpdatedBookmarks = ({
@@ -77,18 +78,25 @@ export const RNTesterReducer = (
       return {
         ...state,
         activeModuleKey: null,
+        activeModuleExampleKey: null,
         screen: action.data.screen,
       };
     case RNTesterActionsType.MODULE_CARD_PRESS:
       return {
         ...state,
         activeModuleKey: action.data.key,
+        activeModuleExampleKey: null,
         recentlyUsed: getUpdatedRecentlyUsed({
           exampleType: action.data.exampleType,
           key: action.data.key,
           recentlyUsed: state.recentlyUsed,
         }),
       };
+    case RNTesterActionsType.EXAMPLE_CARD_PRESS:
+      return {
+        ...state,
+        activeModuleExampleKey: action.data.key,
+      };
     case RNTesterActionsType.BOOKMARK_PRESS:
       return {
         ...state,
@@ -102,7 +110,9 @@ export const RNTesterReducer = (
       // Go back to module or list
       return {
         ...state,
-        activeModuleKey: null,
+        activeModuleExampleKey: null,
+        activeModuleKey:
+          state.activeModuleExampleKey != null ? state.activeModuleKey : null,
       };
     default:
       throw new Error(`Invalid action type ${action.type}`);

packages/rn-tester/js/utils/testerStateUtils.js

@@ -26,6 +26,7 @@ export const Screens = {
 
 export const initialState: RNTesterState = {
   activeModuleKey: null,
+  activeModuleExampleKey: null,
   screen: null,
   bookmarks: null,
   recentlyUsed: null,
@@ -134,6 +135,7 @@ export const getInitialStateFromAsyncStorage = async (
   if (!initialStateString) {
     return {
       activeModuleKey: null,
+      activeModuleExampleKey: null,
       screen: Screens.COMPONENTS,
       bookmarks: {components: [], apis: []},
       recentlyUsed: {components: [], apis: []},