504 lines
15 KiB
TypeScript
504 lines
15 KiB
TypeScript
import type { ChangeEvent } from 'react';
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import type { FC } from '../../../lib/teact/teact';
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import React, {
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useEffect, useRef, memo, useState, useCallback,
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} from '../../../lib/teact/teact';
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import { getActions, withGlobal } from '../../../global';
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import type { IAnchorPosition, ISettings } from '../../../types';
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import { EDITABLE_INPUT_ID } from '../../../config';
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import { selectIsInSelectMode, selectReplyingToId } from '../../../global/selectors';
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import { debounce } from '../../../util/schedulers';
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import focusEditableElement from '../../../util/focusEditableElement';
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import buildClassName from '../../../util/buildClassName';
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import {
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IS_ANDROID, IS_EMOJI_SUPPORTED, IS_IOS, IS_SINGLE_COLUMN_LAYOUT, IS_TOUCH_ENV,
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} from '../../../util/environment';
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import captureKeyboardListeners from '../../../util/captureKeyboardListeners';
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import { getIsDirectTextInputDisabled } from '../../../util/directInputManager';
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import useLayoutEffectWithPrevDeps from '../../../hooks/useLayoutEffectWithPrevDeps';
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import useFlag from '../../../hooks/useFlag';
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import { isHeavyAnimating } from '../../../hooks/useHeavyAnimationCheck';
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import useLang from '../../../hooks/useLang';
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import parseEmojiOnlyString from '../../../util/parseEmojiOnlyString';
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import { isSelectionInsideInput } from './helpers/selection';
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import renderText from '../../common/helpers/renderText';
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import TextFormatter from './TextFormatter';
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const CONTEXT_MENU_CLOSE_DELAY_MS = 100;
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// Focus slows down animation, also it breaks transition layout in Chrome
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const FOCUS_DELAY_MS = 350;
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const TRANSITION_DURATION_FACTOR = 50;
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type OwnProps = {
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id: string;
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chatId: string;
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threadId: number;
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isAttachmentModalInput?: boolean;
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editableInputId?: string;
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html: string;
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placeholder: string;
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forcedPlaceholder?: string;
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noFocusInterception?: boolean;
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canAutoFocus: boolean;
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shouldSuppressFocus?: boolean;
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shouldSuppressTextFormatter?: boolean;
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onUpdate: (html: string) => void;
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onSuppressedFocus?: () => void;
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onSend: () => void;
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captionLimit?: number;
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};
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type StateProps = {
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replyingToId?: number;
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isSelectModeActive?: boolean;
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messageSendKeyCombo?: ISettings['messageSendKeyCombo'];
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};
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const MAX_INPUT_HEIGHT = IS_SINGLE_COLUMN_LAYOUT ? 256 : 416;
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const TAB_INDEX_PRIORITY_TIMEOUT = 2000;
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// Heuristics allowing the user to make a triple click
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const SELECTION_RECALCULATE_DELAY_MS = 260;
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const TEXT_FORMATTER_SAFE_AREA_PX = 90;
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// For some reason Safari inserts `<br>` after user removes text from input
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const SAFARI_BR = '<br>';
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const IGNORE_KEYS = ['Enter', 'PageUp', 'PageDown', 'Meta', 'Alt', 'Ctrl', 'ArrowDown', 'ArrowUp'];
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function clearSelection() {
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const selection = window.getSelection();
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if (!selection) {
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return;
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}
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if (selection.removeAllRanges) {
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selection.removeAllRanges();
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} else if (selection.empty) {
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selection.empty();
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}
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}
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const MessageInput: FC<OwnProps & StateProps> = ({
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id,
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chatId,
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captionLimit,
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isAttachmentModalInput,
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editableInputId,
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html,
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placeholder,
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forcedPlaceholder,
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canAutoFocus,
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noFocusInterception,
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shouldSuppressFocus,
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shouldSuppressTextFormatter,
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replyingToId,
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isSelectModeActive,
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messageSendKeyCombo,
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onUpdate,
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onSuppressedFocus,
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onSend,
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}) => {
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const {
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editLastMessage,
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replyToNextMessage,
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} = getActions();
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// eslint-disable-next-line no-null/no-null
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const inputRef = useRef<HTMLDivElement>(null);
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// eslint-disable-next-line no-null/no-null
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const selectionTimeoutRef = useRef<number>(null);
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// eslint-disable-next-line no-null/no-null
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const cloneRef = useRef<HTMLDivElement>(null);
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const lang = useLang();
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const isContextMenuOpenRef = useRef(false);
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const [isTextFormatterOpen, openTextFormatter, closeTextFormatter] = useFlag();
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const [textFormatterAnchorPosition, setTextFormatterAnchorPosition] = useState<IAnchorPosition>();
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const [selectedRange, setSelectedRange] = useState<Range>();
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const [isTextFormatterDisabled, setIsTextFormatterDisabled] = useState<boolean>(false);
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useEffect(() => {
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if (!isAttachmentModalInput) return;
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updateInputHeight(false);
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}, [isAttachmentModalInput]);
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useLayoutEffectWithPrevDeps(([prevHtml]) => {
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if (html !== inputRef.current!.innerHTML) {
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inputRef.current!.innerHTML = html;
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}
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if (html !== cloneRef.current!.innerHTML) {
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cloneRef.current!.innerHTML = html;
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}
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if (prevHtml !== undefined && prevHtml !== html) {
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updateInputHeight(!html.length);
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}
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}, [html]);
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const chatIdRef = useRef(chatId);
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chatIdRef.current = chatId;
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const focusInput = useCallback(() => {
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if (!inputRef.current) {
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return;
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}
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if (isHeavyAnimating()) {
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setTimeout(focusInput, FOCUS_DELAY_MS);
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return;
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}
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focusEditableElement(inputRef.current!);
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}, []);
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const handleCloseTextFormatter = useCallback(() => {
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closeTextFormatter();
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clearSelection();
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}, [closeTextFormatter]);
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function checkSelection() {
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// Disable the formatter on iOS devices for now.
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if (IS_IOS) {
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return false;
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}
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const selection = window.getSelection();
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if (!selection || !selection.rangeCount || isContextMenuOpenRef.current) {
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closeTextFormatter();
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if (IS_ANDROID) {
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setIsTextFormatterDisabled(false);
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}
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return false;
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}
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const selectionRange = selection.getRangeAt(0);
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const selectedText = selectionRange.toString().trim();
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if (
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shouldSuppressTextFormatter
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|| !isSelectionInsideInput(selectionRange, editableInputId || EDITABLE_INPUT_ID)
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|| !selectedText
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|| parseEmojiOnlyString(selectedText)
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|| !selectionRange.START_TO_END
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) {
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closeTextFormatter();
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return false;
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}
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return true;
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}
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function processSelection() {
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if (!checkSelection()) {
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return;
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}
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if (isTextFormatterDisabled) {
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return;
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}
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const selectionRange = window.getSelection()!.getRangeAt(0);
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const selectionRect = selectionRange.getBoundingClientRect();
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const inputRect = inputRef.current!.getBoundingClientRect();
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let x = (selectionRect.left + selectionRect.width / 2) - inputRect.left;
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if (x < TEXT_FORMATTER_SAFE_AREA_PX) {
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x = TEXT_FORMATTER_SAFE_AREA_PX;
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} else if (x > inputRect.width - TEXT_FORMATTER_SAFE_AREA_PX) {
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x = inputRect.width - TEXT_FORMATTER_SAFE_AREA_PX;
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}
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setTextFormatterAnchorPosition({
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x,
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y: selectionRect.top - inputRect.top,
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});
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setSelectedRange(selectionRange);
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openTextFormatter();
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}
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function processSelectionWithTimeout() {
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if (selectionTimeoutRef.current) {
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window.clearTimeout(selectionTimeoutRef.current);
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}
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// Small delay to allow browser properly recalculate selection
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selectionTimeoutRef.current = window.setTimeout(processSelection, SELECTION_RECALCULATE_DELAY_MS);
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}
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function handleMouseDown(e: React.MouseEvent<HTMLDivElement, MouseEvent>) {
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if (e.button !== 2) {
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e.target.addEventListener('mouseup', processSelectionWithTimeout, { once: true });
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return;
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}
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if (isContextMenuOpenRef.current) {
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return;
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}
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isContextMenuOpenRef.current = true;
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function handleCloseContextMenu(e2: KeyboardEvent | MouseEvent) {
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if (e2 instanceof KeyboardEvent && e2.key !== 'Esc' && e2.key !== 'Escape') {
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return;
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}
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setTimeout(() => {
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isContextMenuOpenRef.current = false;
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}, CONTEXT_MENU_CLOSE_DELAY_MS);
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window.removeEventListener('keydown', handleCloseContextMenu);
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window.removeEventListener('mousedown', handleCloseContextMenu);
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}
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document.addEventListener('mousedown', handleCloseContextMenu);
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document.addEventListener('keydown', handleCloseContextMenu);
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}
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function handleKeyDown(e: React.KeyboardEvent<HTMLDivElement>) {
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// https://levelup.gitconnected.com/javascript-events-handlers-keyboard-and-load-events-1b3e46a6b0c3#1960
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const { isComposing } = e;
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if (!isComposing && !html.length && (e.metaKey || e.ctrlKey)) {
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const targetIndexDelta = e.key === 'ArrowDown' ? 1 : e.key === 'ArrowUp' ? -1 : undefined;
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if (targetIndexDelta) {
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e.preventDefault();
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replyToNextMessage({ targetIndexDelta });
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return;
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}
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}
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if (!isComposing && e.key === 'Enter' && !e.shiftKey) {
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if (
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!(IS_IOS || IS_ANDROID)
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&& (
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(messageSendKeyCombo === 'enter' && !e.shiftKey)
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|| (messageSendKeyCombo === 'ctrl-enter' && (e.ctrlKey || e.metaKey))
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)
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) {
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e.preventDefault();
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closeTextFormatter();
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onSend();
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}
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} else if (!isComposing && e.key === 'ArrowUp' && !html.length && !e.metaKey && !e.ctrlKey && !e.altKey) {
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e.preventDefault();
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editLastMessage();
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} else {
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e.target.addEventListener('keyup', processSelectionWithTimeout, { once: true });
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}
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}
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function handleChange(e: ChangeEvent<HTMLDivElement>) {
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const { innerHTML, textContent } = e.currentTarget;
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onUpdate(innerHTML === SAFARI_BR ? '' : innerHTML);
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// Reset focus on the input to remove any active styling when input is cleared
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if (
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!IS_TOUCH_ENV
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&& (!textContent || !textContent.length)
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// When emojis are not supported, innerHTML contains an emoji img tag that doesn't exist in the textContext
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&& !(!IS_EMOJI_SUPPORTED && innerHTML.includes('emoji-small'))
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&& !(innerHTML.includes('custom-emoji'))
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) {
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const selection = window.getSelection()!;
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if (selection) {
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inputRef.current!.blur();
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selection.removeAllRanges();
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focusEditableElement(inputRef.current!, true);
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}
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}
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}
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function handleAndroidContextMenu(e: React.MouseEvent<HTMLDivElement, MouseEvent>) {
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if (!checkSelection()) {
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return;
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}
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setIsTextFormatterDisabled(!isTextFormatterDisabled);
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if (!isTextFormatterDisabled) {
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e.preventDefault();
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e.stopPropagation();
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processSelection();
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} else {
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closeTextFormatter();
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}
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}
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function updateInputHeight(willSend = false) {
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const input = inputRef.current!;
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const clone = cloneRef.current!;
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const currentHeight = Number(input.style.height.replace('px', ''));
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const newHeight = Math.min(clone.scrollHeight, MAX_INPUT_HEIGHT);
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if (newHeight === currentHeight) {
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return;
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}
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const transitionDuration = Math.round(
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TRANSITION_DURATION_FACTOR * Math.log(Math.abs(newHeight - currentHeight)),
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);
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const exec = () => {
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input.style.height = `${newHeight}px`;
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input.style.transitionDuration = `${transitionDuration}ms`;
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input.classList.toggle('overflown', clone.scrollHeight > MAX_INPUT_HEIGHT);
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};
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if (willSend) {
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// Sync with sending animation
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requestAnimationFrame(exec);
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} else {
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exec();
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}
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}
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useEffect(() => {
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if (IS_TOUCH_ENV) {
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return;
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}
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if (canAutoFocus) {
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focusInput();
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}
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}, [chatId, focusInput, replyingToId, canAutoFocus]);
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useEffect(() => {
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if (
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!chatId
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|| editableInputId !== EDITABLE_INPUT_ID
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|| noFocusInterception
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|| (IS_TOUCH_ENV && IS_SINGLE_COLUMN_LAYOUT)
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|| isSelectModeActive
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) {
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return undefined;
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}
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const handleDocumentKeyDown = (e: KeyboardEvent) => {
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if (getIsDirectTextInputDisabled()) {
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return;
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}
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const { key } = e;
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const target = e.target as HTMLElement | undefined;
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if (!target || IGNORE_KEYS.includes(key)) {
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return;
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}
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const input = inputRef.current!;
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const isSelectionCollapsed = document.getSelection()?.isCollapsed;
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if (
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((key.startsWith('Arrow') || (e.shiftKey && key === 'Shift')) && !isSelectionCollapsed)
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|| (e.code === 'KeyC' && (e.ctrlKey || e.metaKey) && target.tagName !== 'INPUT')
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) {
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return;
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}
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if (
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input
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&& target !== input
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&& target.tagName !== 'INPUT'
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&& !target.isContentEditable
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) {
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focusEditableElement(input, true, true);
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const newEvent = new KeyboardEvent(e.type, e as any);
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input.dispatchEvent(newEvent);
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}
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};
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document.addEventListener('keydown', handleDocumentKeyDown, true);
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return () => {
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document.removeEventListener('keydown', handleDocumentKeyDown, true);
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};
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}, [chatId, editableInputId, isSelectModeActive, noFocusInterception]);
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useEffect(() => {
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const captureFirstTab = debounce((e: KeyboardEvent) => {
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if (e.key === 'Tab' && !getIsDirectTextInputDisabled()) {
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e.preventDefault();
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requestAnimationFrame(focusInput);
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}
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}, TAB_INDEX_PRIORITY_TIMEOUT, true, false);
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return captureKeyboardListeners({ onTab: captureFirstTab });
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}, [focusInput]);
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useEffect(() => {
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const input = inputRef.current!;
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function suppressFocus() {
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input.blur();
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}
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if (shouldSuppressFocus) {
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input.addEventListener('focus', suppressFocus);
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}
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return () => {
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input.removeEventListener('focus', suppressFocus);
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};
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}, [shouldSuppressFocus]);
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const className = buildClassName(
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'form-control custom-scroll',
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html.length > 0 && 'touched',
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shouldSuppressFocus && 'focus-disabled',
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);
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return (
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<div id={id} onClick={shouldSuppressFocus ? onSuppressedFocus : undefined} dir={lang.isRtl ? 'rtl' : undefined}>
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<div
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ref={inputRef}
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id={editableInputId || EDITABLE_INPUT_ID}
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className={className}
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contentEditable
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role="textbox"
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dir="auto"
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tabIndex={0}
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onClick={focusInput}
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onChange={handleChange}
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onKeyDown={handleKeyDown}
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onMouseDown={handleMouseDown}
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onContextMenu={IS_ANDROID ? handleAndroidContextMenu : undefined}
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onTouchCancel={IS_ANDROID ? processSelectionWithTimeout : undefined}
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aria-label={placeholder}
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/>
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{captionLimit && (
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<div className="max-length-indicator" dir="auto">
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{captionLimit}
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</div>
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)}
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<div ref={cloneRef} className={buildClassName(className, 'clone')} dir="auto" />
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{!forcedPlaceholder && <span className="placeholder-text" dir="auto">{placeholder}</span>}
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<TextFormatter
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isOpen={isTextFormatterOpen}
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anchorPosition={textFormatterAnchorPosition}
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selectedRange={selectedRange}
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setSelectedRange={setSelectedRange}
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onClose={handleCloseTextFormatter}
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/>
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{forcedPlaceholder && <span className="forced-placeholder">{renderText(forcedPlaceholder!)}</span>}
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</div>
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);
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};
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export default memo(withGlobal<OwnProps>(
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(global, { chatId, threadId }: OwnProps): StateProps => {
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const { messageSendKeyCombo } = global.settings.byKey;
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return {
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messageSendKeyCombo,
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replyingToId: chatId && threadId ? selectReplyingToId(global, chatId, threadId) : undefined,
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isSelectModeActive: selectIsInSelectMode(global),
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};
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},
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)(MessageInput));
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