closes #5604

public/src/client/chats.js

@@ -83,6 +83,7 @@ define('forum/chats', [
 
 		Chats.addRenameHandler(ajaxify.data.roomId, $('[component="chat/room/name"]'));
 		Chats.addScrollHandler(ajaxify.data.roomId, ajaxify.data.uid, $('.chat-content'));
+		Chats.addCharactersLeftHandler(components.get('chat/input'));
 	};
 
 	Chats.addScrollHandler = function (roomId, uid, el) {
@@ -123,6 +124,12 @@ define('forum/chats', [
 		});
 	};
 
+	Chats.addCharactersLeftHandler = function (element) {
+		element.on('keyup', function () {
+			$('[component="chat/message/length"]').text(element.val().length);
+		});
+	};
+
 	Chats.addEditDeleteHandler = function (element, roomId) {
 		element.on('click', '[data-action="edit"]', function () {
 			var messageId = $(this).parents('[data-mid]').attr('data-mid');

public/src/modules/chat.js

@@ -266,6 +266,8 @@ define('chat', [
 
 			Chats.addScrollHandler(chatModal.attr('data-roomid'), data.uid, chatModal.find('.chat-content'));
 
+			Chats.addCharactersLeftHandler(chatModal.find('[component="chat/input"]'));
+
 			taskbar.push('chat', chatModal.attr('UUID'), {
 				title: data.roomName || (data.users.length ? data.users[0].username : ''),
 				roomId: data.roomId,

src/socket.io/modules.js

@@ -145,6 +145,7 @@ SocketModules.chats.loadRoom = function (socket, data, callback) {
 			results.roomData.groupChat = results.roomData.hasOwnProperty('groupChat') ? results.roomData.groupChat : results.users.length > 2;
 			results.roomData.isOwner = parseInt(results.roomData.owner, 10) === socket.uid;
 			results.roomData.maximumUsersInChatRoom = parseInt(meta.config.maximumUsersInChatRoom, 10) || 0;
+			results.roomData.maximumChatMessageLength = parseInt(meta.config.maximumChatMessageLength) || 1000;
 			results.roomData.showUserInput = !results.roomData.maximumUsersInChatRoom || results.roomData.maximumUsersInChatRoom > 2;
 			next(null, results.roomData);
 		},