401 lines
10 KiB
JavaScript
401 lines
10 KiB
JavaScript
import { h, Component, createRef } from '/js/web_modules/preact.js';
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import htm from '/js/web_modules/htm.js';
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const html = htm.bind(h);
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import { EmojiButton } from '/js/web_modules/@joeattardi/emoji-button.js';
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import ContentEditable, { replaceCaret } from './content-editable.js';
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import {
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generatePlaceholderText,
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getCaretPosition,
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convertToText,
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convertOnPaste,
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createEmojiMarkup,
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trimNbsp,
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emojify,
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} from '../../utils/chat.js';
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import {
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getLocalStorage,
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setLocalStorage,
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classNames,
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} from '../../utils/helpers.js';
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import {
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URL_CUSTOM_EMOJIS,
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KEY_CHAT_FIRST_MESSAGE_SENT,
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CHAT_CHAR_COUNT_BUFFER,
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CHAT_OK_KEYCODES,
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CHAT_KEY_MODIFIERS,
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} from '../../utils/constants.js';
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export default class ChatInput extends Component {
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constructor(props, context) {
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super(props, context);
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this.formMessageInput = createRef();
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this.emojiPickerButton = createRef();
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this.messageCharCount = 0;
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this.prepNewLine = false;
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this.modifierKeyPressed = false; // control/meta/shift/alt
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this.state = {
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inputHTML: '',
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inputCharsLeft: props.inputMaxBytes,
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hasSentFirstChatMessage: getLocalStorage(KEY_CHAT_FIRST_MESSAGE_SENT),
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emojiPicker: null,
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emojiList: null,
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emojiNames: null,
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};
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this.handleEmojiButtonClick = this.handleEmojiButtonClick.bind(this);
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this.handleEmojiSelected = this.handleEmojiSelected.bind(this);
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this.getCustomEmojis = this.getCustomEmojis.bind(this);
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this.handleMessageInputKeydown = this.handleMessageInputKeydown.bind(this);
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this.handleMessageInputKeyup = this.handleMessageInputKeyup.bind(this);
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this.handleMessageInputBlur = this.handleMessageInputBlur.bind(this);
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this.handleSubmitChatButton = this.handleSubmitChatButton.bind(this);
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this.handlePaste = this.handlePaste.bind(this);
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this.handleContentEditableChange =
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this.handleContentEditableChange.bind(this);
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}
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componentDidMount() {
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this.getCustomEmojis();
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}
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getCustomEmojis() {
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fetch(URL_CUSTOM_EMOJIS)
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.then((response) => {
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if (!response.ok) {
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throw new Error(`Network response was not ok ${response.ok}`);
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}
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return response.json();
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})
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.then((json) => {
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const emojiList = json;
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const emojiNames = emojiList.map((emoji) => emoji.name);
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const emojiPicker = new EmojiButton({
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zIndex: 100,
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theme: 'owncast', // see chat.css
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custom: json,
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initialCategory: 'custom',
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showPreview: false,
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autoHide: false,
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autoFocusSearch: false,
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showAnimation: false,
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emojiSize: '24px',
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position: 'right-start',
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strategy: 'absolute',
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});
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emojiPicker.on('emoji', (emoji) => {
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this.handleEmojiSelected(emoji);
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});
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emojiPicker.on('hidden', () => {
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this.formMessageInput.current.focus();
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replaceCaret(this.formMessageInput.current);
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});
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this.setState({ emojiNames, emojiList, emojiPicker });
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})
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.catch((error) => {
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// this.handleNetworkingError(`Emoji Fetch: ${error}`);
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});
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}
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handleEmojiButtonClick() {
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const { emojiPicker } = this.state;
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if (emojiPicker) {
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emojiPicker.togglePicker(this.emojiPickerButton.current);
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}
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}
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handleEmojiSelected(emoji) {
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const { inputHTML, inputCharsLeft } = this.state;
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// if we're already at char limit, don't do anything
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if (inputCharsLeft < 0) {
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return;
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}
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let content = '';
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if (emoji.url) {
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content = createEmojiMarkup(emoji, false);
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} else {
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content = emoji.emoji;
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}
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const position = getCaretPosition(this.formMessageInput.current);
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const newHTML =
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inputHTML.substring(0, position) +
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content +
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inputHTML.substring(position);
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const charsLeft = this.calculateCurrentBytesLeft(newHTML);
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this.setState({
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inputHTML: newHTML,
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inputCharsLeft: charsLeft,
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});
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// a hacky way add focus back into input field
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setTimeout(() => {
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const input = this.formMessageInput.current;
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input.focus();
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replaceCaret(input);
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}, 100);
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}
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// autocomplete text from the given "list". "token" marks the start of word lookup.
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autoComplete(token, list) {
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const { inputHTML } = this.state;
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const position = getCaretPosition(this.formMessageInput.current);
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const at = inputHTML.lastIndexOf(token, position - 1);
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if (at === -1) {
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return false;
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}
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let partial = inputHTML.substring(at + 1, position).trim();
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if (this.partial === undefined) {
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this.partial = [];
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}
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if (partial === this.suggestion) {
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partial = this.partial[token];
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} else {
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this.partial[token] = partial;
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}
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const possibilities = list.filter(function (item) {
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return item.toLowerCase().startsWith(partial.toLowerCase());
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});
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if (this.completionIndex === undefined) {
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this.completionIndex = [];
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}
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if (
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this.completionIndex[token] === undefined ||
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++this.completionIndex[token] >= possibilities.length
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) {
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this.completionIndex[token] = 0;
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}
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if (possibilities.length > 0) {
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this.suggestion = possibilities[this.completionIndex[token]];
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const newHTML =
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inputHTML.substring(0, at + 1) +
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this.suggestion +
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' ' +
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inputHTML.substring(position);
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this.setState({
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inputHTML: newHTML,
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inputCharsLeft: this.calculateCurrentBytesLeft(newHTML),
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});
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}
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return true;
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}
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// replace :emoji: with the emoji <img>
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injectEmoji() {
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const { inputHTML, emojiList } = this.state;
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const textValue = convertToText(inputHTML);
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const processedHTML = emojify(inputHTML, emojiList);
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if (textValue != convertToText(processedHTML)) {
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this.setState({
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inputHTML: processedHTML,
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});
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return true;
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}
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return false;
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}
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handleMessageInputKeydown(event) {
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const key = event && event.key;
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if (key === 'Enter') {
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if (!this.prepNewLine) {
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this.sendMessage();
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event.preventDefault();
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this.prepNewLine = false;
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return;
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}
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}
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// allow key presses such as command/shift/meta, etc even when message length is full later.
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if (CHAT_KEY_MODIFIERS.includes(key)) {
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this.modifierKeyPressed = true;
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}
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if (key === 'Control' || key === 'Shift') {
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this.prepNewLine = true;
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}
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if (key === 'Tab') {
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const { chatUserNames } = this.props;
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const { emojiNames } = this.state;
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if (this.autoComplete('@', chatUserNames)) {
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event.preventDefault();
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}
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if (this.autoComplete(':', emojiNames)) {
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event.preventDefault();
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}
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}
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// if new input pushes the potential chars over, don't do anything
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const formField = this.formMessageInput.current;
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const tempCharsLeft = this.calculateCurrentBytesLeft(formField.innerHTML);
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if (tempCharsLeft <= 0 && !CHAT_OK_KEYCODES.includes(key)) {
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if (!this.modifierKeyPressed) {
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event.preventDefault(); // prevent typing more
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}
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return;
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}
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}
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handleMessageInputKeyup(event) {
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const { key } = event;
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if (key === 'Control' || key === 'Shift') {
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this.prepNewLine = false;
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}
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if (CHAT_KEY_MODIFIERS.includes(key)) {
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this.modifierKeyPressed = false;
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}
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if (key === ':' || key === ';') {
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this.injectEmoji();
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}
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}
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handleMessageInputBlur() {
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this.prepNewLine = false;
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this.modifierKeyPressed = false;
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}
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handlePaste(event) {
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// don't allow paste if too much text already
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if (this.state.inputCharsLeft < 0) {
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event.preventDefault();
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return;
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}
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convertOnPaste(event, this.state.emojiList);
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this.handleMessageInputKeydown(event);
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}
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handleSubmitChatButton(event) {
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event.preventDefault();
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this.sendMessage();
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}
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sendMessage() {
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const { handleSendMessage, inputMaxBytes } = this.props;
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const { hasSentFirstChatMessage, inputHTML, inputCharsLeft } = this.state;
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if (inputCharsLeft < 0) {
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return;
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}
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const message = convertToText(inputHTML);
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const newStates = {
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inputHTML: '',
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inputCharsLeft: inputMaxBytes,
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};
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handleSendMessage(message);
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if (!hasSentFirstChatMessage) {
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newStates.hasSentFirstChatMessage = true;
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setLocalStorage(KEY_CHAT_FIRST_MESSAGE_SENT, true);
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}
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// clear things out.
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this.setState(newStates);
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}
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handleContentEditableChange(event) {
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const value = event.target.value;
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this.setState({
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inputHTML: value,
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inputCharsLeft: this.calculateCurrentBytesLeft(value),
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});
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}
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calculateCurrentBytesLeft(inputContent) {
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const { inputMaxBytes } = this.props;
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const curBytes = new Blob([trimNbsp(inputContent)]).size;
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return inputMaxBytes - curBytes;
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}
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render(props, state) {
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const { hasSentFirstChatMessage, inputCharsLeft, inputHTML, emojiPicker } =
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state;
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const { inputEnabled, inputMaxBytes } = props;
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const emojiButtonStyle = {
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display: emojiPicker && inputCharsLeft > 0 ? 'block' : 'none',
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};
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const extraClasses = classNames({
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'display-count': inputCharsLeft <= CHAT_CHAR_COUNT_BUFFER,
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});
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const placeholderText = generatePlaceholderText(
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inputEnabled,
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hasSentFirstChatMessage
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);
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return html`
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<div
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id="message-input-container"
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class="relative shadow-md bg-gray-900 border-t border-gray-700 border-solid p-4 z-20 ${extraClasses}"
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>
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<div
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id="message-input-wrap"
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class="flex flex-row justify-end appearance-none w-full bg-gray-200 border border-black-500 rounded py-2 px-2 pr-20 my-2 overflow-auto"
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>
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<${ContentEditable}
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id="message-input"
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aria-role="textbox"
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class="appearance-none block w-full bg-transparent text-sm text-gray-700 h-full focus:outline-none"
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aria-placeholder=${placeholderText}
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innerRef=${this.formMessageInput}
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html=${inputHTML}
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disabled=${!inputEnabled}
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onChange=${this.handleContentEditableChange}
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onKeyDown=${this.handleMessageInputKeydown}
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onKeyUp=${this.handleMessageInputKeyup}
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onBlur=${this.handleMessageInputBlur}
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onPaste=${this.handlePaste}
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/>
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</div>
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<div
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id="message-form-actions"
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class="absolute flex flex-col justify-end items-end mr-4"
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>
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<span class="flex flex-row justify-center">
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<button
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ref=${this.emojiPickerButton}
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id="emoji-button"
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class="text-3xl leading-3 cursor-pointer text-purple-600"
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type="button"
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style=${emojiButtonStyle}
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onclick=${this.handleEmojiButtonClick}
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aria-label="Select an emoji"
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disabled=${!inputEnabled}
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>
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<img src="../../../img/smiley.png" />
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</button>
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<button
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id="send-message-button"
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class="text-sm text-white rounded bg-gray-600 hidden p-1 ml-1 -mr-2"
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type="button"
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onclick=${this.handleSubmitChatButton}
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disabled=${inputHTML === '' || inputCharsLeft < 0}
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aria-label="Send message"
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>
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Send
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</button>
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</span>
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<span id="message-form-warning" class="text-red-600 text-xs"
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>${inputCharsLeft} bytes</span
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>
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</div>
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</div>
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`;
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}
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}
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