chore(ui-react-native): Migrate Checkbox primitive

examples/react-native/ios/Podfile.lock

@@ -284,11 +284,11 @@ PODS:
     - glog
   - react-native-netinfo (8.3.1):
     - React-Core
-  - react-native-safe-area-context (4.3.1):
+  - react-native-safe-area-context (4.3.3):
     - RCT-Folly
     - RCTRequired
     - RCTTypeSafety
-    - React
+    - React-Core
     - ReactCommon/turbomodule/core
   - React-perflogger (0.68.1)
   - React-RCTActionSheet (0.68.1):
@@ -355,7 +355,7 @@ PODS:
     - React-jsi (= 0.68.1)
     - React-logger (= 0.68.1)
     - React-perflogger (= 0.68.1)
-  - RNCAsyncStorage (1.17.9):
+  - RNCAsyncStorage (1.17.10):
     - React-Core
   - SocketRocket (0.6.0)
   - Yoga (1.14.0)
@@ -543,7 +543,7 @@ SPEC CHECKSUMS:
   React-jsinspector: 218a2503198ff28a085f8e16622a8d8f507c8019
   React-logger: f79dd3cc0f9b44f5611c6c7862badd891a862cf8
   react-native-netinfo: 1a6035d3b9780221d407c277ebfb5722ace00658
-  react-native-safe-area-context: 6c12e3859b6f27b25de4fee8201cfb858432d8de
+  react-native-safe-area-context: b456e1c40ec86f5593d58b275bd0e9603169daca
   React-perflogger: 30ab8d6db10e175626069e742eead3ebe8f24fd5
   React-RCTActionSheet: 4b45da334a175b24dabe75f856b98fed3dfd6201
   React-RCTAnimation: d6237386cb04500889877845b3e9e9291146bc2e
@@ -556,7 +556,7 @@ SPEC CHECKSUMS:
   React-RCTVibration: 9e344c840176b0af9c84d5019eb4fed8b3c105a1
   React-runtimeexecutor: 7285b499d0339104b2813a1f58ad1ada4adbd6c0
   ReactCommon: bf2888a826ceedf54b99ad1b6182d1bc4a8a3984
-  RNCAsyncStorage: b2489b49e38c85e10ed45a888d13a2a4c7b32ea1
+  RNCAsyncStorage: 0c357f3156fcb16c8589ede67cc036330b6698ca
   SocketRocket: fccef3f9c5cedea1353a9ef6ada904fde10d6608
   Yoga: 17cd9a50243093b547c1e539c749928dd68152da
   YogaKit: f782866e155069a2cca2517aafea43200b01fd5a

examples/react-native/metro.config.js

@@ -17,7 +17,7 @@ const WORKSPACE_NODE_MODULES_PATH = path.resolve(
   '../../node_modules'
 );
 
-const config = { resolver: {}, transformer: {} };
+const config = { resolver: {}, transformer: {}, server: {} };
 
 const dependencies = {
   ...EXAMPLE_APP_PACKAGE_JSON.dependencies,
@@ -111,4 +111,26 @@ config.transformer.getTransformOptions = async () => ({
   },
 });
 
+/**
+ * Below workaround is needed because assets resolutions don't work for Android in monorepo
+ * Ref:
+ * https://github.com/react-native-community/cli/issues/1238
+ * https://github.com/facebook/metro/issues/290#issuecomment-543746458
+ */
+config.transformer.publicPath = '/assets/dir1/dir2/dir3';
+config.server.enhanceMiddleware = (middleware) => {
+  return (req, res, next) => {
+    if (req.url.startsWith('/assets/dir1/dir2/dir3')) {
+      req.url = req.url.replace('/assets/dir1/dir2/dir3', '/assets');
+    } else if (req.url.startsWith('/assets/dir1/dir2')) {
+      req.url = req.url.replace('/assets/dir1/dir2', '/assets/..');
+    } else if (req.url.startsWith('/assets/dir1')) {
+      req.url = req.url.replace('/assets/dir1', '/assets/../..');
+    } else if (req.url.startsWith('/assets')) {
+      req.url = req.url.replace('/assets', '/assets/../../..');
+    }
+    return middleware(req, res, next);
+  };
+};
+
 module.exports = config;

examples/react-native/src/assets/icons/index.ts

@@ -4,8 +4,6 @@ import { ImageSourcePropType } from 'react-native';
  * Example app icon assets.
  */
 const icons = {
-  checkboxFilled: require('./checkboxFilled.png') as ImageSourcePropType,
-  checkboxOutline: require('./checkboxOutline.png') as ImageSourcePropType,
   radioButtonChecked:
     require('./radioButtonChecked.png') as ImageSourcePropType,
   radioButtonUnchecked:

examples/react-native/src/ui/index.ts

@@ -9,6 +9,5 @@ export * from '@aws-amplify/ui-react-native/dist/primitives';
  * e.g. have full type documentation, controlled vs uncontrolled handling, stories, touch feedback,
  * accessibility props, unit tests, etc
  */
-export * from './Checkbox';
 export * from './Radio';
 export * from './RadioGroup';

examples/react-native/storybook/index.tsx

@@ -1,7 +1,14 @@
+import React from 'react';
 import { LogBox, Platform } from 'react-native';
-import { getStorybookUI, configure } from '@storybook/react-native';
+import {
+  getStorybookUI,
+  configure,
+  addDecorator,
+} from '@storybook/react-native';
+import { withKnobs } from '@storybook/addon-knobs';
 import noop from 'lodash/noop';
 import { loadStories } from './storyLoader';
+import { Screen } from './ui/Screen';
 
 const STORYBOOK_REQUIRE_CYCLE_PREFIX =
   'Require cycle: node_modules/core-js/internals/microtask.js';
@@ -15,6 +22,14 @@ export function setupStorybook(initStorybook: boolean) {
     configure(() => {
       loadStories();
     }, module);
+
+    // add decorators
+    addDecorator(withKnobs);
+    addDecorator((Story: any) => (
+      <Screen>
+        <Story />
+      </Screen>
+    ));
   }
 
   // Refer to https://github.com/storybookjs/react-native/tree/master/app/react-native#getstorybookui-options

examples/react-native/storybook/stories/Button.stories.tsx

@@ -4,14 +4,8 @@ import { action } from '@storybook/addon-actions';
 import { text } from '@storybook/addon-knobs';
 import { storiesOf } from '@storybook/react-native';
 import { Button } from '@aws-amplify/ui-react-native/dist/primitives';
-import { Screen } from '../ui';
 
 storiesOf('Button', module)
-  .addDecorator((Story: any) => (
-    <Screen>
-      <Story />
-    </Screen>
-  ))
   .add('with text', () => (
     <Button onPress={action('clicked-text')}>
       <Text>{text('Button text', 'Hello Button')}</Text>

examples/react-native/storybook/stories/Checkbox.stories.tsx

@@ -0,0 +1,27 @@
+import React, { useState } from 'react';
+import { storiesOf } from '@storybook/react-native';
+import { select } from '@storybook/addon-knobs';
+import { Checkbox } from '@aws-amplify/ui-react-native/dist/primitives';
+
+const StatefulCheckbox = ({ ...props }: any) => {
+  const [value, setValue] = useState(props.value);
+  const onChange = (nextValue: string) => {
+    setValue(nextValue);
+  };
+
+  return <Checkbox {...props} value={value} onChange={onChange} size={20} />;
+};
+storiesOf('Checkbox', module)
+  .add('default', () => <StatefulCheckbox />)
+  .add('with Label', () => (
+    <StatefulCheckbox
+      label="Label"
+      labelPosition={select(
+        'LabelPosition',
+        ['start', 'end', 'top', 'bottom'],
+        'end'
+      )}
+    />
+  ))
+  .add('selected', () => <StatefulCheckbox selected />)
+  .add('disabled', () => <StatefulCheckbox label="Disabled" disabled />);

examples/react-native/storybook/stories/Heading.stories.tsx

@@ -4,17 +4,11 @@ import {
   Heading,
   HeadingProps,
 } from '@aws-amplify/ui-react-native/dist/primitives';
-import { Screen } from '../ui';
 import { StyleSheet } from 'react-native';
 
 const levels: HeadingProps['level'][] = [1, 2, 3, 4, 5, 6];
 
 storiesOf('Heading', module)
-  .addDecorator((Story: any) => (
-    <Screen>
-      <Story />
-    </Screen>
-  ))
   .add('default', () => <Heading>Default Heading</Heading>)
   .add('level', () => (
     <>

examples/react-native/storybook/stories/Label.stories.tsx

@@ -2,14 +2,8 @@ import React from 'react';
 import { StyleSheet } from 'react-native';
 import { storiesOf } from '@storybook/react-native';
 import { Label } from '@aws-amplify/ui-react-native/dist/primitives';
-import { Screen } from '../ui';
 
 storiesOf('Label', module)
-  .addDecorator((Story: any) => (
-    <Screen>
-      <Story />
-    </Screen>
-  ))
   .add('default Label', () => <Label>Default Label</Label>)
   .add('style', () => <Label style={styles.redText}>This should be red</Label>);
 

examples/react-native/storybook/storyLoader.js

@@ -1,11 +1,13 @@
 function loadStories() {
   require('./stories/Button.stories');
+  require('./stories/Checkbox.stories');
   require('./stories/Heading.stories');
   require('./stories/Label.stories');
 }
 
 const stories = [
   './stories/Button.stories',
+  './stories/Checkbox.stories',
   './stories/Heading.stories',
   './stories/Label.stories',
 ];

examples/react-native/storybook/ui/Screen.tsx

@@ -10,5 +10,9 @@ export const Screen = ({ children }: ScreenProps) => {
 };
 
 const styles = StyleSheet.create({
-  container: { flex: 1, alignItems: 'center', justifyContent: 'center' },
+  container: {
+    flex: 1,
+    alignItems: 'center',
+    justifyContent: 'center',
+  },
 });

packages/react-native/package.json

@@ -20,6 +20,7 @@
     "@babel/core": "^7.17.10",
     "@babel/preset-env": "^7.17.10",
     "@testing-library/react-hooks": "^8.0.0",
+    "@testing-library/react-native": "^11.1.0",
     "@types/react": "^17.0.2",
     "@types/react-native": "^0.67.6",
     "@types/react-test-renderer": "^17.0.1",

packages/react-native/src/assets/icons/index.ts

@@ -1,6 +1,8 @@
 import { ImageSourcePropType } from 'react-native';
 
 const icons = {
+  checkboxFilled: require('./checkboxFilled.png') as ImageSourcePropType,
+  checkboxOutline: require('./checkboxOutline.png') as ImageSourcePropType,
   close: require('./close.png') as ImageSourcePropType,
 };
 

examples/react-native/src/ui/Checkbox/Checkbox.tsx → packages/react-native/src/primitives/Checkbox/Checkbox.tsx

@@ -1,4 +1,4 @@
-import React, { useCallback, useMemo } from 'react';
+import React, { useCallback, useMemo, useState } from 'react';
 import {
   PressableStateCallbackType,
   StyleProp,
@@ -7,19 +7,10 @@ import {
 } from 'react-native';
 
 import { icons } from '../../assets';
-import {
-  IconButton,
-  Label,
-} from '@aws-amplify/ui-react-native/dist/primitives';
-
-import { CheckboxProps, CheckboxStyle } from './types';
-
-const styles: CheckboxStyle = {
-  container: {
-    alignItems: 'center',
-    padding: 4,
-  },
-};
+import { styles } from './styles';
+import { IconButton } from '../IconButton';
+import { Label } from '../Label';
+import { CheckboxProps, LabelPosition } from './types';
 
 export default function Checkbox<T>({
   buttonStyle,
@@ -34,24 +25,27 @@ export default function Checkbox<T>({
   value,
   ...rest
 }: CheckboxProps<T>): JSX.Element {
-  const labelPrecedesIcon =
-    labelPosition === 'start' || labelPosition === 'top';
+  const [pressed, setPressed] = useState(selected ?? false);
 
   const handleOnChange = useCallback(() => {
     onChange?.(value);
-  }, [onChange, value]);
+    setPressed(!pressed);
+  }, [onChange, value, pressed]);
 
-  const containerStyle: ViewStyle = useMemo(
-    () => ({
+  const containerStyle: ViewStyle = useMemo(() => {
+    const FLEX_DIRECTIONS: Record<LabelPosition, ViewStyle['flexDirection']> = {
+      start: 'row-reverse',
+      end: 'row',
+      top: 'column-reverse',
+      bottom: 'column',
+    };
+
+    return {
       ...styles.container,
-      flexDirection:
-        labelPosition === 'bottom' || labelPosition === 'top'
-          ? 'column'
-          : 'row',
+      flexDirection: FLEX_DIRECTIONS[labelPosition],
       opacity: disabled ? 0.6 : 1,
-    }),
-    [disabled, labelPosition]
-  );
+    };
+  }, [disabled, labelPosition]);
 
   const iconButtonStyle = useCallback(
     ({ pressed }: PressableStateCallbackType): StyleProp<ViewStyle> => {
@@ -67,22 +61,20 @@ export default function Checkbox<T>({
     [buttonStyle]
   );
 
+  // TODO: replace View with Pressable and IconButton with icon once Icon primitive is added
+
   return (
     <View style={[containerStyle, style]}>
-      {label && labelPrecedesIcon ? (
-        <Label style={labelStyle}>{label}</Label>
-      ) : null}
       <IconButton
         {...rest}
+        accessibilityRole={'checkbox'}
         disabled={disabled}
         onPress={handleOnChange}
-        source={selected ? icons.checkboxFilled : icons.checkboxOutline}
+        source={pressed ? icons.checkboxFilled : icons.checkboxOutline}
         size={size}
         style={iconButtonStyle}
       />
-      {label && !labelPrecedesIcon ? (
-        <Label style={labelStyle}>{label}</Label>
-      ) : null}
+      {label ? <Label style={labelStyle}>{label}</Label> : null}
     </View>
   );
 }

packages/react-native/src/primitives/Checkbox/__tests__/Checkbox.spec.tsx

@@ -0,0 +1,42 @@
+import React from 'react';
+import { create } from 'react-test-renderer';
+import { fireEvent, render } from '@testing-library/react-native';
+import Checkbox from '../Checkbox';
+
+const onChange = jest.fn();
+
+describe('Checkbox', () => {
+  beforeEach(() => {
+    onChange.mockClear();
+  });
+
+  [true, false].forEach((value) => {
+    it(`renders as expected when selected is ${value}`, () => {
+      const checkbox = create(
+        <Checkbox selected={value} value={value} onChange={onChange} />
+      );
+      expect(checkbox.toJSON()).toMatchSnapshot();
+    });
+  });
+
+  it('renders as expected when disabled', () => {
+    const checkbox = create(<Checkbox disabled value="" onChange={onChange} />);
+    expect(checkbox.toJSON()).toMatchSnapshot();
+  });
+
+  it('calls the expected handler when selected', () => {
+    const { getByRole } = render(<Checkbox value="" onChange={onChange} />);
+    const checkbox = getByRole('checkbox');
+    fireEvent.press(checkbox);
+    expect(onChange).toHaveBeenCalledTimes(1);
+  });
+
+  it('does nothing when disabled', () => {
+    const { getByRole } = render(
+      <Checkbox value="" onChange={onChange} disabled />
+    );
+    const checkbox = getByRole('checkbox');
+    fireEvent.press(checkbox);
+    expect(onChange).not.toHaveBeenCalled();
+  });
+});