[NEW] Message character limit feature

src/components/App/index.js

@@ -182,6 +182,7 @@ export class App extends Component {
 		expanded,
 		alerts,
 		modal,
+		config,
 	}, { initialized }) => {
 		if (!initialized) {
 			return null;
@@ -204,6 +205,7 @@ export class App extends Component {
 			onOpenWindow: this.handleOpenWindow,
 			onDismissAlert: this.handleDismissAlert,
 			dismissNotification: this.dismissNotification,
+			limitTextLength: config.settings.limitTextLength,
 		};
 
 		return (

src/components/Composer/index.js

@@ -147,7 +147,7 @@ export class Composer extends Component {
 	// we only update composer if value length changed from 0 to 1 or 1 to 0
 	// everything else is managed by this.el
 	shouldComponentUpdate({ value: nextValue }) {
-		const { value } = this.props;
+		const { value, limitTextLength } = this.props;
 
 		const nextValueEmpty = !nextValue || nextValue.length === 0;
 		const valueEmpty = !value || value.length === 0;
@@ -156,6 +156,10 @@ export class Composer extends Component {
 			return true;
 		}
 
+		if (nextValue.length === limitTextLength || value.length === limitTextLength) {
+			return true;
+		}
+
 		return false;
 	}
 

src/components/Footer/index.js

@@ -43,3 +43,13 @@ export const FooterOptions = ({ children }) => (
 		{children}
 	</PopoverMenu>
 );
+
+
+export const ReminderCharacters = ({ className, style = {}, textLenght, limitTextLength }) => (
+	<span
+		className={createClassName(styles, `footer__remainder${ textLenght === limitTextLength ? '-alert' : '' }`, {}, [className])}
+		style={style}
+	>
+		{textLenght} / {limitTextLength}
+	</span>
+);

src/components/Footer/styles.scss

@@ -41,6 +41,16 @@
 
 		@include pressable-button(2px);
 	}
+
+	&__remainder, &__remainder-alert  {
+		margin-left: 10px;
+		min-width: 100px;
+	}
+
+	&__remainder-alert {
+		color: $color-red;
+		transition: color .2s;
+	}
 }
 
 .powered-by {

src/components/Screen/index.js

@@ -129,7 +129,7 @@ export const ScreenContent = ({ children, nopadding }) => (
 );
 
 
-export const ScreenFooter = ({ children, options }) => (
+export const ScreenFooter = ({ children, options, limit }) => (
 	<Footer>
 		{children && (
 			<FooterContent>
@@ -138,6 +138,7 @@ export const ScreenFooter = ({ children, options }) => (
 		)}
 		<FooterContent>
 			{options}
+			{limit}
 			<PoweredBy />
 		</FooterContent>
 	</Footer>

src/routes/Chat/component.js

@@ -2,7 +2,7 @@ import { Component } from 'preact';
 
 import { Composer, ComposerAction, ComposerActions } from '../../components/Composer';
 import { FilesDropTarget } from '../../components/FilesDropTarget';
-import { FooterOptions } from '../../components/Footer';
+import { FooterOptions, ReminderCharacters } from '../../components/Footer';
 import { Menu } from '../../components/Menu';
 import { MessageList } from '../../components/Messages';
 import { Screen } from '../../components/Screen';
@@ -64,9 +64,13 @@ export default class Chat extends Component {
 	}
 
 	handleChangeText = (text) => {
-		this.setState({ text });
-		const { onChangeText } = this.props;
-		onChangeText && onChangeText(text);
+		let value = text;
+		const { onChangeText, limitTextLength } = this.props;
+		if (limitTextLength && limitTextLength < text.length) {
+			value = value.substring(0, limitTextLength);
+		}
+		this.setState({ text: value });
+		onChangeText && onChangeText(value);
 	}
 
 	render = ({
@@ -89,6 +93,7 @@ export default class Chat extends Component {
 		onRemoveUserData,
 		lastReadMessageId,
 		queueInfo,
+		limitTextLength,
 		...props
 	}, {
 		atBottom = true,
@@ -143,6 +148,11 @@ export default class Chat extends Component {
 							</Menu.Group>
 						</FooterOptions>
 					) : null}
+					limit={limitTextLength
+						? <ReminderCharacters
+							limitTextLength={limitTextLength}
+							textLenght={text.length}
+						/> : null}
 				>
 					<Composer onUpload={onUpload}
 						onSubmit={this.handleSubmit}
@@ -162,14 +172,15 @@ export default class Chat extends Component {
 									<ComposerAction onClick={this.handleUploadClick}>
 										<PlusIcon width={20} />
 									</ComposerAction>
-								)}
+								)}1
 								{text.length > 0 && (
 									<ComposerAction onClick={this.handleSendClick}>
 										<SendIcon width={20} />
 									</ComposerAction>
 								)}
 							</ComposerActions>
 						)}
+						limitTextLength={limitTextLength}
 					/>
 				</Screen.Footer>
 			</FilesDropTarget>

src/routes/Chat/styles.scss

@@ -50,6 +50,11 @@
 			border-radius: 50%;
 		}
 	}
+
+	.none__action {
+		opacity: 0.6;
+		margin: 0 6px;
+	}
 }
 
 @keyframes loader-rotate {