Chrome mWeb - scan button provides no feedback

src/hooks/useTabNavigatorFocus/index.js

@@ -0,0 +1,79 @@
+import {useTabAnimation} from '@react-navigation/material-top-tabs';
+import {useIsFocused} from '@react-navigation/native';
+import {useEffect, useState} from 'react';
+import DomUtils from '@libs/DomUtils';
+
+/**
+ * Custom React hook to determine the focus status of a tab in a Material Top Tab Navigator.
+ * It evaluates whether the current tab is focused based on the tab's animation position and
+ * the screen's focus status within a React Navigation environment.
+ *
+ * This hook is designed for use with the Material Top Tabs provided by '@react-navigation/material-top-tabs'.
+ * It leverages the `useTabAnimation` hook from the same package to track the animated position of tabs
+ * and the `useIsFocused` hook from '@react-navigation/native' to ascertain if the current screen is in focus.
+ *
+ * Note: This hook contains a conditional invocation of another hook (`useTabAnimation`),
+ * which is typically an anti-pattern in React. This is done to account for scenarios where the hook
+ * might not be used within a Material Top Tabs Navigator context. Proper usage should ensure that
+ * this hook is only used where appropriate.
+ *
+ * @param {Object} params - The parameters object.
+ * @param {number} params.tabIndex - The index of the tab for which focus status is being determined.
+ * @returns {boolean} Returns `true` if the tab is both animation-focused and screen-focused, otherwise `false`.
+ *
+ * @example
+ * const isTabFocused = useTabNavigatorFocus({ tabIndex: 1 });
+ */
+function useTabNavigatorFocus({tabIndex}) {
+    let tabPositionAnimation = null;
+    try {
+        // Retrieve the animation value from the tab navigator, which ranges from 0 to the total number of pages displayed.
+        // Even a minimal scroll towards the camera page (e.g., a value of 0.001 at start) should activate the camera for immediate responsiveness.
+        // STOP!!!!!!! This is not a pattern to be followed! We are conditionally rendering this hook becase when used in the edit flow we'll never be inside a tab navigator.
+        // eslint-disable-next-line react-hooks/rules-of-hooks
+        tabPositionAnimation = useTabAnimation();
+    } catch (error) {
+        tabPositionAnimation = null;
+    }
+    const isPageFocused = useIsFocused();
+    // set to true if the hook is not used within the MaterialTopTabs context
+    // the hook will then return true if the screen is focused
+    const [isTabFocused, setIsTabFocused] = useState(!tabPositionAnimation);
+
+    useEffect(() => {
+        if (!tabPositionAnimation) {
+            return;
+        }
+        const index = Number(tabIndex);
+
+        const listenerId = tabPositionAnimation.addListener(({value}) => {
+            // Activate camera as soon the index is animating towards the `tabIndex`
+            DomUtils.requestAnimationFrame(() => {
+                setIsTabFocused(value > index - 1 && value < index + 1);
+            });
+        });
+
+        // We need to get the position animation value on component initialization to determine
+        // if the tab is focused or not. Since it's an Animated.Value the only synchronous way
+        // to retrieve the value is to use a private method.
+        // eslint-disable-next-line no-underscore-dangle
+        const initialTabPositionValue = tabPositionAnimation.__getValue();
+
+        if (typeof initialTabPositionValue === 'number') {
+            DomUtils.requestAnimationFrame(() => {
+                setIsTabFocused(initialTabPositionValue > index - 1 && initialTabPositionValue < index + 1);
+            });
+        }
+
+        return () => {
+            if (!tabPositionAnimation) {
+                return;
+            }
+            tabPositionAnimation.removeListener(listenerId);
+        };
+    }, [tabIndex, tabPositionAnimation]);
+
+    return isTabFocused && isPageFocused;
+}
+
+export default useTabNavigatorFocus;

src/libs/DomUtils/index.native.ts

@@ -2,6 +2,15 @@ import GetActiveElement from './types';
 
 const getActiveElement: GetActiveElement = () => null;
 
+const requestAnimationFrame = (callback: () => void) => {
+    if (!callback) {
+        return;
+    }
+
+    callback();
+};
+
 export default {
     getActiveElement,
+    requestAnimationFrame,
 };

src/libs/DomUtils/index.ts

@@ -4,4 +4,5 @@ const getActiveElement: GetActiveElement = () => document.activeElement;
 
 export default {
     getActiveElement,
+    requestAnimationFrame: window.requestAnimationFrame.bind(window),
 };

src/pages/iou/ReceiptSelector/NavigationAwareCamera.js

@@ -1,17 +1,20 @@
-import {useIsFocused} from '@react-navigation/native';
 import PropTypes from 'prop-types';
 import React, {useEffect, useRef} from 'react';
 import {View} from 'react-native';
 import Webcam from 'react-webcam';
+import useTabNavigatorFocus from '@hooks/useTabNavigatorFocus';
 
 const propTypes = {
-    /* Flag to turn on/off the torch/flashlight - if available */
+    /** Flag to turn on/off the torch/flashlight - if available */
     torchOn: PropTypes.bool,
 
-    /* Callback function when media stream becomes available - user granted camera permissions and camera starts to work */
+    /** The index of the tab that contains this camera */
+    cameraTabIndex: PropTypes.number.isRequired,
+
+    /** Callback function when media stream becomes available - user granted camera permissions and camera starts to work */
     onUserMedia: PropTypes.func,
 
-    /* Callback function passing torch/flashlight capability as bool param of the browser */
+    /** Callback function passing torch/flashlight capability as bool param of the browser */
     onTorchAvailability: PropTypes.func,
 };
 
@@ -22,9 +25,11 @@ const defaultProps = {
 };
 
 // Wraps a camera that will only be active when the tab is focused or as soon as it starts to become focused.
-const NavigationAwareCamera = React.forwardRef(({torchOn, onTorchAvailability, ...props}, ref) => {
+const NavigationAwareCamera = React.forwardRef(({torchOn, onTorchAvailability, cameraTabIndex, ...props}, ref) => {
     const trackRef = useRef(null);
-    const isCameraActive = useIsFocused();
+    const shouldShowCamera = useTabNavigatorFocus({
+        tabIndex: cameraTabIndex,
+    });
 
     const handleOnUserMedia = (stream) => {
         if (props.onUserMedia) {
@@ -51,7 +56,7 @@ const NavigationAwareCamera = React.forwardRef(({torchOn, onTorchAvailability, .
         });
     }, [torchOn]);
 
-    if (!isCameraActive) {
+    if (!shouldShowCamera) {
         return null;
     }
     return (

src/pages/iou/ReceiptSelector/NavigationAwareCamera.native.js

@@ -1,71 +1,19 @@
-import {useTabAnimation} from '@react-navigation/material-top-tabs';
-import {useNavigation} from '@react-navigation/native';
 import PropTypes from 'prop-types';
-import React, {useEffect, useState} from 'react';
+import React from 'react';
 import {Camera} from 'react-native-vision-camera';
-import CONST from '@src/CONST';
+import useTabNavigatorFocus from '@hooks/useTabNavigatorFocus';
 
 const propTypes = {
     /* The index of the tab that contains this camera */
     cameraTabIndex: PropTypes.number.isRequired,
 
-    /* Whether we're in a tab navigator */
-    isInTabNavigator: PropTypes.bool.isRequired,
-
     /** Name of the selected receipt tab */
     selectedTab: PropTypes.string.isRequired,
 };
 
 // Wraps a camera that will only be active when the tab is focused or as soon as it starts to become focused.
-const NavigationAwareCamera = React.forwardRef(({cameraTabIndex, isInTabNavigator, selectedTab, ...props}, ref) => {
-    // Get navigation to get initial isFocused value (only needed once during init!)
-    const navigation = useNavigation();
-    const [isCameraActive, setIsCameraActive] = useState(() => navigation.isFocused());
-
-    // Retrieve the animation value from the tab navigator, which ranges from 0 to the total number of pages displayed.
-    // Even a minimal scroll towards the camera page (e.g., a value of 0.001 at start) should activate the camera for immediate responsiveness.
-
-    // STOP!!!!!!! This is not a pattern to be followed! We are conditionally rendering this hook becase when used in the edit flow we'll never be inside a tab navigator.
-    // eslint-disable-next-line react-hooks/rules-of-hooks
-    const tabPositionAnimation = isInTabNavigator ? useTabAnimation() : null;
-
-    useEffect(() => {
-        if (!isInTabNavigator) {
-            return;
-        }
-
-        const listenerId = tabPositionAnimation.addListener(({value}) => {
-            if (selectedTab !== CONST.TAB.SCAN) {
-                return;
-            }
-            // Activate camera as soon the index is animating towards the `cameraTabIndex`
-            setIsCameraActive(value > cameraTabIndex - 1 && value < cameraTabIndex + 1);
-        });
-
-        return () => {
-            tabPositionAnimation.removeListener(listenerId);
-        };
-    }, [cameraTabIndex, tabPositionAnimation, isInTabNavigator, selectedTab]);
-
-    // Note: The useEffect can be removed once VisionCamera V3 is used.
-    // Its only needed for android, because there is a native cameraX android bug. With out this flow would break the camera:
-    // 1. Open camera tab
-    // 2. Take a picture
-    // 3. Go back from the opened screen
-    // 4. The camera is not working anymore
-    useEffect(() => {
-        const removeBlurListener = navigation.addListener('blur', () => {
-            setIsCameraActive(false);
-        });
-        const removeFocusListener = navigation.addListener('focus', () => {
-            setIsCameraActive(true);
-        });
-
-        return () => {
-            removeBlurListener();
-            removeFocusListener();
-        };
-    }, [navigation]);
+const NavigationAwareCamera = React.forwardRef(({cameraTabIndex, selectedTab, ...props}, ref) => {
+    const isCameraActive = useTabNavigatorFocus({tabIndex: cameraTabIndex, selectedTab});
 
     return (
         <Camera

src/pages/iou/ReceiptSelector/index.js

@@ -54,21 +54,17 @@ const propTypes = {
 
     /** The id of the transaction we're editing */
     transactionID: PropTypes.string,
-
-    /** Whether or not the receipt selector is in a tab navigator for tab animations */
-    // eslint-disable-next-line react/no-unused-prop-types
-    isInTabNavigator: PropTypes.bool,
 };
 
 const defaultProps = {
     report: {},
     iou: iouDefaultProps,
     transactionID: '',
-    isInTabNavigator: true,
 };
 
 function ReceiptSelector({route, transactionID, iou, report}) {
     const iouType = lodashGet(route, 'params.iouType', '');
+    const pageIndex = lodashGet(route, 'params.pageIndex', 1);
 
     // Grouping related states
     const [isAttachmentInvalid, setIsAttachmentInvalid] = useState(false);
@@ -82,7 +78,7 @@ function ReceiptSelector({route, transactionID, iou, report}) {
 
     const [cameraPermissionState, setCameraPermissionState] = useState('prompt');
     const [isFlashLightOn, toggleFlashlight] = useReducer((state) => !state, false);
-    const [isTorchAvailable, setIsTorchAvailable] = useState(true);
+    const [isTorchAvailable, setIsTorchAvailable] = useState(false);
     const cameraRef = useRef(null);
 
     const hideReciptModal = () => {
@@ -201,6 +197,7 @@ function ReceiptSelector({route, transactionID, iou, report}) {
                     torchOn={isFlashLightOn}
                     onTorchAvailability={setIsTorchAvailable}
                     forceScreenshotSourceSize
+                    cameraTabIndex={pageIndex}
                 />
             </View>
 

src/pages/iou/ReceiptSelector/index.native.js

@@ -51,9 +51,6 @@ const propTypes = {
     /** The id of the transaction we're editing */
     transactionID: PropTypes.string,
 
-    /** Whether or not the receipt selector is in a tab navigator for tab animations */
-    isInTabNavigator: PropTypes.bool,
-
     /** Name of the selected receipt tab */
     selectedTab: PropTypes.string,
 };
@@ -62,11 +59,10 @@ const defaultProps = {
     report: {},
     iou: iouDefaultProps,
     transactionID: '',
-    isInTabNavigator: true,
     selectedTab: '',
 };
 
-function ReceiptSelector({route, report, iou, transactionID, isInTabNavigator, selectedTab}) {
+function ReceiptSelector({route, report, iou, transactionID, selectedTab}) {
     const devices = useCameraDevices('wide-angle-camera');
     const device = devices.back;
 
@@ -198,7 +194,6 @@ function ReceiptSelector({route, report, iou, transactionID, isInTabNavigator, s
                     zoom={device.neutralZoom}
                     photo
                     cameraTabIndex={pageIndex}
-                    isInTabNavigator={isInTabNavigator}
                     selectedTab={selectedTab}
                 />
             )}