Syncfusion Vue Chat UI Component

The Syncfusion Vue Chat UI component provides a modern, feature-rich interface for building conversational applications. It supports real-time messaging, user avatars, typing indicators, file attachments, message replies, mentions, timestamps, and bot integrations.

Component Overview

The Vue Chat UI component (ejs-chatui) provides:

• Message Management: Add, update, and display messages with rich metadata (author, timestamp, status)
• User System: Define current user and other participants with avatars, names, and status indicators
• Interactive Features: Message replies, pinning, forwarding, toolbar actions, and @mentions
• File Attachments: Upload, preview, and display files with drag-and-drop support
• Templates: Customize messages, suggestions, empty states, typing indicators, attachments, and time breaks
• Events: Handle message sending, user typing, attachment uploads, mention selection, and toolbar clicks
• Accessibility: Built-in WCAG compliance, keyboard navigation, and RTL support
• Bot Integration: Connect with Microsoft Bot Framework and Dialogflow

Package: @syncfusion/ej2-vue-interactive-chat
Vue Support: Vue 3 Dependencies: Base, Inputs, Navigations, Buttons, Popups, Dropdowns, Splitbuttons

Documentation and Navigation Guide

Getting Started

📄 Read: references/getting-started.md

• Installation and package setup (@syncfusion/ej2-vue-interactive-chat)
• Basic Chat UI implementation
• CSS imports and Material3 theme configuration
• Component registration and first render
• Defining messages with <e-messages> and <e-message> directives
• Setting up current user

Messages Configuration

📄 Read: references/messages.md

• Message model structure (text, author, timestamp, id)
• Adding messages with <e-message> selector
• Message properties: isPinned, isForwarded, replyTo
• Message status with icons and tooltips
• Attached files in messages
• Mention users in message text
• Message IDs for tracking and updates

Users and Avatars

📄 Read: references/users.md

• User model configuration (id, user, avatarUrl)
• Current user vs other participants
• Avatar display (URL or initials fallback)
• Avatar background colors customization
• Status icons with cssClass
• Typing users list and indicators
• User CSS class customization

Appearance and Styling

📄 Read: references/appearance.md

• Component dimensions (height, width)
• CSS class customization with cssClass property
• RTL (right-to-left) support
• Compact mode layout (all messages left-aligned)
• Empty chat template for no messages
• Persistence across page reloads
• Theming with Material3, Bootstrap, Fabric

Header and Footer Configuration

📄 Read: references/header-footer.md

• Header text and icon configuration
• Header toolbar settings and items
• Toolbar item configuration (text, icon, tooltip, align)
• Show/hide header with showHeader property
• Show/hide footer with showFooter property
• Footer template customization
• Placeholder text for input textarea
• Toolbar item click events

Timestamps and Time Breaks

📄 Read: references/timestamps-timebreaks.md

• Show/hide timestamps with showTimeStamp
• Timestamp format customization
• Time breaks for date-based grouping
• Custom time break templates
• Localization and culture-specific formats
• Per-message timestamp formats

Advanced Features

📄 Read: references/advanced-features.md

• @Mention functionality with trigger character
• Mention users list and suggestion popup
• File attachments configuration (saveUrl, allowed types, max size)
• Drag-and-drop attachments
• Message toolbar (Reply, Pin, Delete, Copy, Forward)
• Message toolbar customization and events
• Load on demand for message history
• Auto scroll to bottom for new messages
• Suggestions above input textarea

Templates

📄 Read: references/templates.md

• Message template for custom message rendering
• Suggestion template for suggestion items
• Typing users template for typing indicators
• Empty chat template for no messages state
• Footer template for custom footer
• Attachment template for file display in footer
• Preview template for attachment previews
• Time break template for date separators
• Template context data (message, index, suggestion)

Events and Methods

📄 Read: references/events-methods.md

• created event (component initialization)
• messageSend event (before message sent)
• userTyping event (typing indicators)
• mentionSelect event (mention selection)
• Attachment events (beforeUpload, success, failure, removed)
• Toolbar item click events (header and message toolbars)
• addMessage() method to append messages
• updateMessage() method to modify messages
• scrollToBottom() method for navigation
• scrollToMessage() method to scroll to specific message
• focus() method for input textarea

Bot Integrations

📄 Read: references/bot-integrations.md

• Integration with Microsoft Bot Framework
• Integration with Google Dialogflow
• Bot message handling and responses
• Connecting to bot services
• Sample bot conversation flows
• Handling bot-initiated messages

Quick Start

Basic Chat UI

<template>
  <div id="container" style="height: 400px; width: 500px;">
    <ejs-chatui :user="currentUser">
      <e-messages>
        <e-message 
          :author="currentUser" 
          text="Hello! How can I help you today?"
        ></e-message>
        <e-message 
          :author="supportUser" 
          text="Hi! I need assistance with my order."
        ></e-message>
      </e-messages>
    </ejs-chatui>
  </div>
</template>

<script setup>
import { 
  ChatUIComponent as EjsChatui, 
  MessagesDirective as EMessages, 
  MessageDirective as EMessage 
} from "@syncfusion/ej2-vue-interactive-chat";

const currentUser = {
  id: "user1",
  user: "Albert",
  avatarUrl: "./albert.png"
};

const supportUser = {
  id: "user2",
  user: "Support Agent",
  avatarUrl: "./support.png"
};
</script>

<style>
@import "../node_modules/@syncfusion/ej2-material3-theme/styles/chat-ui/index.css";
</style>

Common Patterns

Dynamic Message Handling

<script setup>
import { ref } from 'vue';
import { ChatUIComponent as EjsChatui } from "@syncfusion/ej2-vue-interactive-chat";

const chatRef = ref(null);

// Add message dynamically
const sendMessage = (text) => {
  chatRef.value.addMessage({
    text: text,
    author: currentUser,
    timestamp: new Date()
  });
};

// Handle message send event
const onMessageSend = (args) => {
  console.log('Message sent:', args.message);
  // Send to backend or bot service
};
</script>

<template>
  <ejs-chatui 
    ref="chatRef"
    :user="currentUser"
    :messageSend="onMessageSend"
  ></ejs-chatui>
</template>

Message Replies and Threading

<e-message 
  :author="currentUser" 
  text="I've completed the review."
  :replyTo="{
    messageID: 'msg-123',
    text: 'Can you review the document?',
    user: otherUser,
    timestamp: new Date('2026-03-27T10:00:00')
  }"
></e-message>

File Attachments

<ejs-chatui 
  :user="currentUser"
  :enableAttachments="true"
  :attachmentSettings="{
    saveUrl: 'https://api.example.com/upload',
    allowedFileTypes: '.jpg,.png,.pdf,.docx',
    maxFileSize: 5242880,
    maximumCount: 3
  }"
  :beforeAttachmentUpload="handleBeforeUpload"
  :attachmentUploadSuccess="handleUploadSuccess"
></ejs-chatui>

@Mentions

<ejs-chatui 
  :user="currentUser"
  mentionTriggerChar="@"
  :mentionUsers="[
    { id: 'u1', user: 'Alice' },
    { id: 'u2', user: 'Bob' },
    { id: 'u3', user: 'Charlie' }
  ]"
  :mentionSelect="handleMentionSelect"
></ejs-chatui>