owncast/webroot/js/components/chat/chat-input.js

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import { h, Component, createRef } from 'https://unpkg.com/preact?module';
import htm from 'https://unpkg.com/htm?module';
const html = htm.bind(h);
import { EmojiButton } from 'https://unpkg.com/@joeattardi/emoji-button@4.2.0/dist/index.js';
import ContentEditable, { replaceCaret } from './content-editable.js';
import { generatePlaceholderText, getCaretPosition, convertToText, convertOnPaste } from '../../utils/chat.js';
import { getLocalStorage, setLocalStorage, classNames } from '../../utils/helpers.js';
import {
URL_CUSTOM_EMOJIS,
KEY_CHAT_FIRST_MESSAGE_SENT,
CHAT_MAX_MESSAGE_LENGTH,
CHAT_CHAR_COUNT_BUFFER,
CHAT_OK_KEYCODES,
CHAT_KEY_MODIFIERS,
} from '../../utils/constants.js';
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export default class ChatInput extends Component {
constructor(props, context) {
super(props, context);
this.formMessageInput = createRef();
this.emojiPickerButton = createRef();
this.messageCharCount = 0;
this.emojiPicker = null;
this.prepNewLine = false;
this.modifierKeyPressed = false; // control/meta/shift/alt
this.state = {
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inputHTML: '',
inputText: '', // for counting
inputCharsLeft: CHAT_MAX_MESSAGE_LENGTH,
hasSentFirstChatMessage: getLocalStorage(KEY_CHAT_FIRST_MESSAGE_SENT),
};
this.handleEmojiButtonClick = this.handleEmojiButtonClick.bind(this);
this.handleEmojiSelected = this.handleEmojiSelected.bind(this);
this.getCustomEmojis = this.getCustomEmojis.bind(this);
this.handleMessageInputKeydown = this.handleMessageInputKeydown.bind(this);
this.handleMessageInputKeyup = this.handleMessageInputKeyup.bind(this);
this.handleMessageInputBlur = this.handleMessageInputBlur.bind(this);
this.handleSubmitChatButton = this.handleSubmitChatButton.bind(this);
this.handlePaste = this.handlePaste.bind(this);
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this.handleContentEditableChange = this.handleContentEditableChange.bind(this);
}
componentDidMount() {
this.getCustomEmojis();
}
getCustomEmojis() {
fetch(URL_CUSTOM_EMOJIS)
.then(response => {
if (!response.ok) {
throw new Error(`Network response was not ok ${response.ok}`);
}
return response.json();
})
.then(json => {
this.emojiPicker = new EmojiButton({
zIndex: 100,
theme: 'owncast', // see chat.css
custom: json,
initialCategory: 'custom',
showPreview: false,
emojiSize: '24px',
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position: 'right-start',
strategy: 'absolute',
});
this.emojiPicker.on('emoji', emoji => {
this.handleEmojiSelected(emoji);
});
})
.catch(error => {
// this.handleNetworkingError(`Emoji Fetch: ${error}`);
});
}
handleEmojiButtonClick() {
if (this.emojiPicker) {
this.emojiPicker.togglePicker(this.emojiPickerButton.current);
}
}
handleEmojiSelected(emoji) {
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const { inputHTML } = this.state;
let content = '';
if (emoji.url) {
const url = location.protocol + "//" + location.host + "/" + emoji.url;
const name = url.split('\\').pop().split('/').pop();
content = "<img class=\"emoji\" alt=\"" + name + "\" src=\"" + url + "\"/>";
} else {
content = emoji.emoji;
}
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this.setState({
inputHTML: inputHTML + content,
});
// a hacky way add focus back into input field
setTimeout( () => {
const input = this.formMessageInput.current;
input.focus();
replaceCaret(input);
}, 100);
}
// autocomplete user names
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autoCompleteNames() {
const { chatUserNames } = this.props;
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const { inputHTML } = this.state;
const position = getCaretPosition(this.formMessageInput.current);
const at = inputHTML.lastIndexOf('@', position - 1);
if (at === -1) {
return false;
}
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let partial = inputHTML.substring(at + 1, position).trim();
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if (partial === this.suggestion) {
partial = this.partial;
} else {
this.partial = partial;
}
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const possibilities = chatUserNames.filter(function (username) {
return username.toLowerCase().startsWith(partial.toLowerCase());
});
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if (this.completionIndex === undefined || ++this.completionIndex >= possibilities.length) {
this.completionIndex = 0;
}
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if (possibilities.length > 0) {
this.suggestion = possibilities[this.completionIndex];
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this.setState({
inputHTML: inputHTML.substring(0, at + 1) + this.suggestion + ' ' + inputHTML.substring(position),
})
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}
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return true;
}
handleMessageInputKeydown(event) {
const formField = this.formMessageInput.current;
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let textValue = formField.innerText.trim(); // get this only to count chars
const newStates = {};
let numCharsLeft = CHAT_MAX_MESSAGE_LENGTH - textValue.length;
const key = event && event.key;
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if (key === 'Enter') {
if (!this.prepNewLine) {
this.sendMessage();
event.preventDefault();
this.prepNewLine = false;
return;
}
}
// allow key presses such as command/shift/meta, etc even when message length is full later.
if (CHAT_KEY_MODIFIERS.includes(key)) {
this.modifierKeyPressed = true;
}
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if (key === 'Control' || key === 'Shift') {
this.prepNewLine = true;
}
if (key === 'Tab') {
if (this.autoCompleteNames()) {
event.preventDefault();
// value could have been changed, update char count
textValue = formField.innerText.trim();
numCharsLeft = CHAT_MAX_MESSAGE_LENGTH - textValue.length;
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}
}
if (numCharsLeft <= 0 && !CHAT_OK_KEYCODES.includes(key)) {
newStates.inputText = textValue;
this.setState(newStates);
if (!this.modifierKeyPressed) {
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event.preventDefault(); // prevent typing more
}
return;
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}
newStates.inputText = textValue;
this.setState(newStates);
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}
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handleMessageInputKeyup(event) {
const formField = this.formMessageInput.current;
const textValue = formField.innerText.trim(); // get this only to count chars
const { key } = event;
if (key === 'Control' || key === 'Shift') {
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this.prepNewLine = false;
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}
if (CHAT_KEY_MODIFIERS.includes(key)) {
this.modifierKeyPressed = false;
}
this.setState({
inputCharsLeft: CHAT_MAX_MESSAGE_LENGTH - textValue.length,
});
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}
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handleMessageInputBlur(event) {
this.prepNewLine = false;
this.modifierKeyPressed = false;
}
handlePaste(event) {
// don't allow paste if too much text already
if (CHAT_MAX_MESSAGE_LENGTH - this.state.inputText.length < 0) {
event.preventDefault();
return;
}
convertOnPaste(event);
this.handleMessageInputKeydown(event);
}
handleSubmitChatButton(event) {
event.preventDefault();
this.sendMessage();
}
sendMessage() {
const { handleSendMessage } = this.props;
const { hasSentFirstChatMessage, inputHTML, inputText } = this.state;
if (CHAT_MAX_MESSAGE_LENGTH - inputText.length < 0) {
return;
}
const message = convertToText(inputHTML);
const newStates = {
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inputHTML: '',
inputText: '',
inputCharsLeft: CHAT_MAX_MESSAGE_LENGTH,
};
handleSendMessage(message);
if (!hasSentFirstChatMessage) {
newStates.hasSentFirstChatMessage = true;
setLocalStorage(KEY_CHAT_FIRST_MESSAGE_SENT, true);
}
// clear things out.
this.setState(newStates);
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}
handleContentEditableChange(event) {
this.setState({ inputHTML: event.target.value });
}
render(props, state) {
const { hasSentFirstChatMessage, inputCharsLeft, inputHTML } = state;
const { inputEnabled } = props;
const emojiButtonStyle = {
display: this.emojiPicker && inputCharsLeft > 0 ? 'block' : 'none',
};
const extraClasses = classNames({
'display-count': inputCharsLeft <= CHAT_CHAR_COUNT_BUFFER,
});
const placeholderText = generatePlaceholderText(inputEnabled, hasSentFirstChatMessage);
return (
html`
<div id="message-input-container" class="relative shadow-md bg-gray-900 border-t border-gray-700 border-solid p-4 z-20 ${extraClasses}">
<div
id="message-input-wrap"
class="flex flex-row justify-end appearance-none w-full bg-gray-200 border border-black-500 rounded py-2 px-2 pr-12 my-2 overflow-auto">
<${ContentEditable}
id="message-input"
class="appearance-none block w-full bg-transparent text-sm text-gray-700 h-full focus:outline-none"
placeholderText=${placeholderText}
innerRef=${this.formMessageInput}
html=${inputHTML}
disabled=${!inputEnabled}
onChange=${this.handleContentEditableChange}
onKeyDown=${this.handleMessageInputKeydown}
onKeyUp=${this.handleMessageInputKeyup}
onBlur=${this.handleMessageInputBlur}
onPaste=${this.handlePaste}
/>
</div>
<div id="message-form-actions" class="absolute flex flex-col w-10 justify-end items-center">
<button
ref=${this.emojiPickerButton}
id="emoji-button"
class="text-3xl leading-3 cursor-pointer text-purple-600"
type="button"
style=${emojiButtonStyle}
onclick=${this.handleEmojiButtonClick}
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disabled=${!inputEnabled}
><img src="../../../img/smiley.png" /></button>
<span id="message-form-warning" class="text-red-600 text-xs">${inputCharsLeft}/${CHAT_MAX_MESSAGE_LENGTH}</span>
</div>
</div>
`);
}
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}