mattermost-mobile/app/components/post_draft/post_input/post_input.tsx
Daniel Espino García cff12f7182
Enable exhaustive deps in the repo (#9508)
* Enable exhaustive deps in the repo

* Add tests for the new hooks

* Update claude.md

* Remove pre-commit overwrite
2026-02-18 11:56:16 +01:00

576 lines
22 KiB
TypeScript

// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
// See LICENSE.txt for license information.
import {useRewrite} from '@agents/hooks';
import {useHardwareKeyboardEvents} from '@mattermost/hardware-keyboard';
import {useManagedConfig} from '@mattermost/react-native-emm';
import PasteableTextInput, {type PastedFile, type PasteInputRef} from '@mattermost/react-native-paste-input';
import React, {useCallback, useEffect, useMemo, useRef, useState} from 'react';
import {defineMessage, type IntlShape, useIntl} from 'react-intl';
import {
Alert, AppState, type AppStateStatus, DeviceEventEmitter, type EmitterSubscription, Keyboard,
type NativeSyntheticEvent, Platform, type TextInputSelectionChangeEventData,
} from 'react-native';
import Animated, {cancelAnimation, Easing, runOnUI, useAnimatedStyle, useSharedValue, withRepeat, withTiming} from 'react-native-reanimated';
import {updateDraftMessage} from '@actions/local/draft';
import {userTyping} from '@actions/websocket/users';
import {Events, Screens} from '@constants';
import {useKeyboardAnimationContext} from '@context/keyboard_animation';
import {useServerUrl} from '@context/server';
import {useTheme} from '@context/theme';
import {useIsTablet} from '@hooks/device';
import {useInputPropagation} from '@hooks/input';
import {useFocusAfterEmojiDismiss} from '@hooks/useFocusAfterEmojiDismiss';
import {DEFAULT_INPUT_ACCESSORY_HEIGHT} from '@hooks/useInputAccessoryView';
import NavigationStore from '@store/navigation_store';
import {handleDraftUpdate} from '@utils/draft';
import {extractFileInfo} from '@utils/file';
import {changeOpacity, makeStyleSheetFromTheme, getKeyboardAppearanceFromTheme} from '@utils/theme';
import type {AvailableScreens} from '@typings/screens/navigation';
type Props = {
testID?: string;
channelDisplayName?: string;
channelId: string;
maxMessageLength: number;
rootId: string;
timeBetweenUserTypingUpdatesMilliseconds: number;
maxNotificationsPerChannel: number;
enableUserTypingMessage: boolean;
membersInChannel: number;
value: string;
updateValue: React.Dispatch<React.SetStateAction<string>>;
addFiles: (files: ExtractedFileInfo[]) => void;
cursorPosition: number;
updateCursorPosition: React.Dispatch<React.SetStateAction<number>>;
sendMessage: () => void;
inputRef: React.MutableRefObject<PasteInputRef | undefined>;
setIsFocused: (isFocused: boolean) => void;
}
const showPasteFilesErrorDialog = (intl: IntlShape) => {
Alert.alert(
intl.formatMessage({
id: 'mobile.files_paste.error_title',
defaultMessage: 'Paste failed',
}),
intl.formatMessage({
id: 'mobile.files_paste.error_description',
defaultMessage: 'An error occurred while pasting the file(s). Please try again.',
}),
[
{
text: intl.formatMessage({
id: 'mobile.files_paste.error_dismiss',
defaultMessage: 'Dismiss',
}),
},
],
);
};
const getPlaceHolder = (rootId?: string) => {
let placeholder;
if (rootId) {
placeholder = defineMessage({id: 'create_post.thread_reply', defaultMessage: 'Reply to this thread...'});
} else {
placeholder = defineMessage({id: 'create_post.write', defaultMessage: 'Write to {channelDisplayName}'});
}
return placeholder;
};
const getStyleSheet = makeStyleSheetFromTheme((theme: Theme) => ({
input: {
color: theme.centerChannelColor,
fontSize: 15,
lineHeight: 20,
paddingHorizontal: 12,
paddingTop: Platform.select({
ios: 6,
android: 8,
}),
paddingBottom: Platform.select({
ios: 6,
android: 2,
}),
minHeight: 30,
},
}));
export default function PostInput({
testID,
channelDisplayName,
channelId,
maxMessageLength,
rootId,
timeBetweenUserTypingUpdatesMilliseconds,
maxNotificationsPerChannel,
enableUserTypingMessage,
membersInChannel,
value,
updateValue,
addFiles,
cursorPosition,
updateCursorPosition,
sendMessage,
inputRef,
setIsFocused,
}: Props) {
const intl = useIntl();
const isTablet = useIsTablet();
const theme = useTheme();
const style = getStyleSheet(theme);
const serverUrl = useServerUrl();
const managedConfig = useManagedConfig<ManagedConfig>();
const {
setShowInputAccessoryView,
showInputAccessoryView,
isInputAccessoryViewMode,
inputAccessoryViewAnimatedHeight,
keyboardTranslateY,
isTransitioningFromCustomView,
setIsEmojiSearchFocused,
isEmojiSearchFocused,
keyboardHeight,
lastKeyboardHeight,
bottomInset,
scrollOffset,
registerCursorPosition,
registerPostInputCallbacks,
isInEmojiPickerTransition,
getPreservedCursorPosition,
clearCursorPositionPreservation,
} = useKeyboardAnimationContext();
// Register cursor position updates with context
// Always update cursorPositionRef, even when input accessory view is shown,
// so emoji insertion works correctly at cursor position
useEffect(() => {
if (registerCursorPosition) {
// Pass value length so registerCursorPosition can check if cursor is reset to end
registerCursorPosition(cursorPosition, value.length);
}
}, [registerCursorPosition, cursorPosition, showInputAccessoryView, value]);
// Register updateValue and updateCursorPosition with context
useEffect(() => {
if (registerPostInputCallbacks) {
registerPostInputCallbacks(updateValue, updateCursorPosition);
}
// updateValue and updateCursorPosition are stable setState functions, don't need to be in deps
// eslint-disable-next-line react-hooks/exhaustive-deps
}, [registerPostInputCallbacks]);
const [propagateValue, shouldProcessEvent] = useInputPropagation();
const {isProcessing} = useRewrite();
const lastTypingEventSent = useRef(0);
const lastNativeValue = useRef('');
const previousAppState = useRef(AppState.currentState);
const [longMessageAlertShown, setLongMessageAlertShown] = useState(false);
// Handle focus after emoji picker dismissal
const focusInput = useCallback(() => {
inputRef.current?.focus();
}, [inputRef]);
const {
focus: focusWithEmojiDismiss,
isDismissingEmojiPicker,
focusTimeoutRef,
isManuallyFocusingAfterEmojiDismiss,
} = useFocusAfterEmojiDismiss(inputRef, focusInput);
const disableCopyAndPaste = managedConfig.copyAndPasteProtection === 'true';
const maxHeight = isTablet ? 150 : 88;
const pasteInputStyle = useMemo(() => {
return {...style.input, maxHeight};
}, [maxHeight, style.input]);
// Pulsing animation for when AI rewrite is processing
const pulseOpacity = useSharedValue(1);
const pulsingAnimatedStyle = useAnimatedStyle(() => ({
opacity: pulseOpacity.value,
}));
useEffect(() => {
if (isProcessing) {
pulseOpacity.value = withRepeat(
withTiming(0.5, {duration: 400, easing: Easing.inOut(Easing.ease)}),
-1,
true,
);
} else {
pulseOpacity.value = withTiming(1, {duration: 200});
}
return () => {
cancelAnimation(pulseOpacity);
};
}, [isProcessing, pulseOpacity]);
const onBlur = useCallback(() => {
handleDraftUpdate({
serverUrl,
channelId,
rootId,
value,
});
setIsFocused(false);
}, [serverUrl, channelId, rootId, value, setIsFocused]);
// Handle press event (fires BEFORE onFocus) - dismiss emoji picker before keyboard opens
const handlePress = useCallback(() => {
focusWithEmojiDismiss();
}, [focusWithEmojiDismiss]);
const onFocus = useCallback(() => {
// Ignore focus events during emoji picker dismissal - handled manually
if (Platform.OS === 'android' && (isDismissingEmojiPicker.current || focusTimeoutRef.current || isManuallyFocusingAfterEmojiDismiss)) {
return;
}
// On Android, ignore focus events when emoji search is focused
// This prevents the emoji picker from closing when the search bar gets focus
if (Platform.OS === 'android' && isEmojiSearchFocused) {
return;
}
setIsFocused(true);
// Reset emoji search focus immediately to prevent jumping
// This must happen before closing the emoji picker
setIsEmojiSearchFocused(false);
const wasEmojiPickerOpen = showInputAccessoryView;
if (wasEmojiPickerOpen) {
updateCursorPosition(value.length);
clearCursorPositionPreservation?.();
}
setShowInputAccessoryView(false);
if (Platform.OS === 'android') {
keyboardTranslateY.value = inputAccessoryViewAnimatedHeight.value;
inputAccessoryViewAnimatedHeight.value = 0;
isInputAccessoryViewMode.value = false;
// IMPORTANT: Reset isTransitioningFromCustomView when keyboard opens
// This ensures emoji picker can be opened again after keyboard appears
isTransitioningFromCustomView.value = false;
// Reset bottomInset and scrollOffset so the scroll restoration can trigger when emoji picker closes
bottomInset.value = 0;
scrollOffset.value = 0;
return;
}
// Transition from emoji picker to keyboard
if (showInputAccessoryView) {
// Use actual keyboard height instead of emoji picker height to ensure consistency
// This prevents height accumulation when transitioning multiple times
// Use default keyboard height if no keyboard height has been recorded yet
// This prevents input container from going to bottom when keyboard hasn't been opened
const targetKeyboardHeight = keyboardHeight.value || lastKeyboardHeight || DEFAULT_INPUT_ACCESSORY_HEIGHT;
// Set transition flag FIRST synchronously to prevent keyboard handlers from interfering
// This must be set before disabling input accessory view mode to avoid race conditions
isTransitioningFromCustomView.value = true;
// Collapse emoji picker instantly
inputAccessoryViewAnimatedHeight.value = 0;
// Set input container height to keyboard height to ensure correct final position
// This ensures the height always matches the keyboard, preventing accumulation
keyboardTranslateY.value = targetKeyboardHeight;
// Use runOnUI to disable input accessory view mode atomically
// This ensures the transition flag is visible when keyboard handlers start processing
runOnUI(() => {
'worklet';
// Disable custom view mode to allow keyboard handlers to work
// This is done AFTER setting transition flag to prevent race conditions
isInputAccessoryViewMode.value = false;
})();
// Safety net: In rare cases (app backgrounding, system interruptions, rapid toggling),
// the keyboard onEnd event might not fire, leaving us stuck in transition state.
// This timeout ensures we recover after 1 second if that happens.
setTimeout(() => {
if (isTransitioningFromCustomView.value) {
isTransitioningFromCustomView.value = false;
}
}, 1000);
}
}, [
isDismissingEmojiPicker,
focusTimeoutRef,
isManuallyFocusingAfterEmojiDismiss,
isEmojiSearchFocused,
setIsFocused,
setIsEmojiSearchFocused,
showInputAccessoryView,
setShowInputAccessoryView,
updateCursorPosition,
value.length,
clearCursorPositionPreservation,
keyboardTranslateY,
inputAccessoryViewAnimatedHeight,
isInputAccessoryViewMode,
isTransitioningFromCustomView,
bottomInset,
scrollOffset,
keyboardHeight,
lastKeyboardHeight,
]);
const handleAndroidKeyboardHide = useCallback(() => {
onBlur();
}, [onBlur]);
const handleAndroidKeyboardShow = useCallback(() => {
onFocus();
}, [onFocus]);
const checkMessageLength = useCallback((newValue: string) => {
const valueLength = newValue.trim().length;
if (valueLength > maxMessageLength) {
// Check if component is already aware message is too long
if (!longMessageAlertShown) {
Alert.alert(
intl.formatMessage({
id: 'mobile.message_length.title',
defaultMessage: 'Message Length',
}),
intl.formatMessage({
id: 'mobile.message_length.message',
defaultMessage: 'Your current message is too long. Current character count: {count}/{max}',
}, {
max: maxMessageLength,
count: valueLength,
}),
);
setLongMessageAlertShown(true);
}
} else if (longMessageAlertShown) {
setLongMessageAlertShown(false);
}
}, [intl, longMessageAlertShown, maxMessageLength]);
const handlePostDraftSelectionChanged = useCallback((event: NativeSyntheticEvent<TextInputSelectionChangeEventData> | null, fromHandleTextChange = false) => {
// Always update cursor position, even when input accessory view is shown,
// so emoji insertion works correctly at cursor position
const cp = fromHandleTextChange ? cursorPosition : event!.nativeEvent.selection.end;
// Check if cursor is being reset to end when we're transitioning to emoji picker
// This happens when keyboard is dismissed - the TextInput selection resets to end
// Only block if we're actually in a transition period (emoji picker opening or just opened)
const isInTransition = isInEmojiPickerTransition?.();
const preservedPosition = isInTransition ? getPreservedCursorPosition?.() : null;
const isCursorAtEnd = cp === value.length;
const cursorPositionChanged = cp !== cursorPosition;
const hasPreservedPosition = preservedPosition !== null;
const preservedPositionChanged = preservedPosition !== cp;
const isResettingToEnd = isCursorAtEnd && cursorPositionChanged && hasPreservedPosition && preservedPositionChanged;
const isPreservedPositionWithinBounds = hasPreservedPosition && preservedPosition! < value.length;
// If we're opening emoji picker and cursor is being reset to end, ignore it and keep the preserved position
if (!fromHandleTextChange && isResettingToEnd && isInTransition && isPreservedPositionWithinBounds) {
return;
}
// When emoji picker is open, ignore cursor position updates that move to the end
// unless the value length changed (user typed something).
if (showInputAccessoryView && !fromHandleTextChange && isCursorAtEnd && cursorPositionChanged) {
return;
}
updateCursorPosition(cp);
}, [cursorPosition, updateCursorPosition, showInputAccessoryView, value.length, isInEmojiPickerTransition, getPreservedCursorPosition]);
const handleTextChange = useCallback((newValue: string) => {
if (!shouldProcessEvent(newValue)) {
return;
}
updateValue(newValue);
lastNativeValue.current = newValue;
checkMessageLength(newValue);
if (
newValue &&
lastTypingEventSent.current + timeBetweenUserTypingUpdatesMilliseconds < Date.now() &&
membersInChannel < maxNotificationsPerChannel &&
enableUserTypingMessage
) {
userTyping(serverUrl, channelId, rootId);
lastTypingEventSent.current = Date.now();
}
}, [
shouldProcessEvent,
updateValue,
checkMessageLength,
timeBetweenUserTypingUpdatesMilliseconds,
membersInChannel,
maxNotificationsPerChannel,
enableUserTypingMessage,
serverUrl,
channelId,
rootId,
]);
const onPaste = useCallback(async (error: string | null | undefined, files: PastedFile[]) => {
if (error) {
showPasteFilesErrorDialog(intl);
}
addFiles(await extractFileInfo(files));
}, [addFiles, intl]);
const handleHardwareEnterPress = useCallback(() => {
const topScreen = NavigationStore.getVisibleScreen();
let sourceScreen: AvailableScreens = Screens.CHANNEL;
if (rootId) {
sourceScreen = Screens.THREAD;
} else if (isTablet) {
sourceScreen = Screens.HOME;
}
if (topScreen === sourceScreen) {
sendMessage();
}
}, [sendMessage, rootId, isTablet]);
const handleHardwareShiftEnter = useCallback(() => {
const topScreen = NavigationStore.getVisibleScreen();
let sourceScreen: AvailableScreens = Screens.CHANNEL;
if (rootId) {
sourceScreen = Screens.THREAD;
} else if (isTablet) {
sourceScreen = Screens.HOME;
}
if (topScreen === sourceScreen) {
let newValue: string;
updateValue((v) => {
newValue = v.substring(0, cursorPosition) + '\n' + v.substring(cursorPosition);
return newValue;
});
updateCursorPosition((pos) => pos + 1);
propagateValue(newValue!);
}
}, [rootId, isTablet, updateValue, updateCursorPosition, cursorPosition, propagateValue]);
const onAppStateChange = useCallback((appState: AppStateStatus) => {
if (appState !== 'active' && previousAppState.current === 'active') {
updateDraftMessage(serverUrl, channelId, rootId, value);
}
previousAppState.current = appState;
}, [serverUrl, channelId, rootId, value]);
useEffect(() => {
let keyboardHideListener: EmitterSubscription | undefined;
let keyboardShowListener: EmitterSubscription | undefined;
if (Platform.OS === 'android') {
keyboardHideListener = Keyboard.addListener('keyboardDidHide', handleAndroidKeyboardHide);
keyboardShowListener = Keyboard.addListener('keyboardDidShow', handleAndroidKeyboardShow);
}
return (() => {
keyboardShowListener?.remove();
keyboardHideListener?.remove();
});
}, [handleAndroidKeyboardHide, handleAndroidKeyboardShow]);
useEffect(() => {
const listener = AppState.addEventListener('change', onAppStateChange);
return () => {
listener.remove();
};
}, [onAppStateChange]);
useEffect(() => {
const listener = DeviceEventEmitter.addListener(Events.SEND_TO_POST_DRAFT, ({text, location}: {text: string; location: string}) => {
const sourceScreen = channelId && rootId ? Screens.THREAD : Screens.CHANNEL;
if (location === sourceScreen) {
const draft = value ? `${value} ${text} ` : `${text} `;
updateValue(draft);
updateCursorPosition(draft.length);
propagateValue(draft);
inputRef.current?.focus();
}
});
return () => {
listener.remove();
updateDraftMessage(serverUrl, channelId, rootId, lastNativeValue.current); // safe draft on unmount
};
// - updateValue, updateCursorPosition, propagateValue are stable setState/hook functions
// - inputRef is a ref (stable reference, doesn't need to be in deps)
// - serverUrl, value, lastNativeValue are either stable or we want their latest values when event fires
// - We need to recreate the listener when channelId/rootId changes to check the correct source screen
// eslint-disable-next-line react-hooks/exhaustive-deps
}, [updateValue, channelId, rootId]);
useEffect(() => {
if (value !== lastNativeValue.current) {
propagateValue(value);
lastNativeValue.current = value;
}
// - propagateValue is from useInputPropagation hook (stable reference, doesn't need to be in deps)
// - lastNativeValue is a ref (stable reference, doesn't need to be in deps)
// eslint-disable-next-line react-hooks/exhaustive-deps
}, [value]);
const events = useMemo(() => ({
onEnterPressed: handleHardwareEnterPress,
onShiftEnterPressed: handleHardwareShiftEnter,
}), [handleHardwareEnterPress, handleHardwareShiftEnter]);
useHardwareKeyboardEvents(events);
return (
<Animated.View style={pulsingAnimatedStyle}>
<PasteableTextInput
allowFontScaling={true}
disableCopyPaste={disableCopyAndPaste}
disableFullscreenUI={true}
keyboardAppearance={getKeyboardAppearanceFromTheme(theme)}
multiline={true}
onBlur={onBlur}
onChangeText={handleTextChange}
onFocus={onFocus}
onPress={Platform.OS === 'android' ? handlePress : undefined}
onPaste={onPaste}
onSelectionChange={handlePostDraftSelectionChanged}
placeholder={intl.formatMessage(getPlaceHolder(rootId), {channelDisplayName})}
placeholderTextColor={changeOpacity(theme.centerChannelColor, 0.5)}
ref={inputRef}
showSoftInputOnFocus={Platform.OS === 'android' ? (!showInputAccessoryView || isManuallyFocusingAfterEmojiDismiss) : true}
smartPunctuation='disable'
submitBehavior='newline'
style={pasteInputStyle}
testID={testID}
underlineColorAndroid='transparent'
textContentType='none'
value={value}
autoCapitalize='sentences'
editable={!isProcessing}
nativeID={testID}
/>
</Animated.View>
);
}