Message List

Overview

MessageList is a Composite Component that displays a list of messages and effectively manages real-time operations. It includes various types of messages such as Text Messages, Media Messages, Stickers, and more.

MessageList is primarily a list of the base component MessageBubble. The MessageBubble Component is utilized to create different types of chat bubbles depending on the message type.

---

Usage

Integration

The following code snippet illustrates how you can directly incorporate the MessageList component into your Application.

app.module.ts

import { CUSTOM_ELEMENTS_SCHEMA, NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { CometChatMessageList } from '@cometchat/chat-uikit-angular';
import { AppComponent } from './app.component';

@NgModule({
  imports: [
    BrowserModule,
    CometChatMessageList
  ],
  declarations: [AppComponent],
  providers: [],
  bootstrap: [AppComponent],
  schemas: [CUSTOM_ELEMENTS_SCHEMA]
})
export class AppModule { }

app.component.ts

import { CometChat } from '@cometchat/chat-sdk-javascript';
import { Component, OnInit } from '@angular/core';
import {  CometChatThemeService, CometChatUIKit } from '@cometchat/chat-uikit-angular';
import "@cometchat/uikit-elements";

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit{
  ngOnInit(): void {
    CometChat.getUser("uid").then((user:CometChat.User)=>{
      this.userObject=user;
    });
  }

  public userObject!: CometChat.User;

  constructor(private themeService:CometChatThemeService) {
    themeService.theme.palette.setMode("light")
    themeService.theme.palette.setPrimary({ light: "#6851D6", dark: "#6851D6" })
  }

  onLogin(UID?: any) {
    CometChatUIKit.login({ uid: UID }).then(
      (user) => {
        setTimeout(() => {
          window.location.reload();
        }, 1000);
      },
      (error) => {
        console.log("Login failed with exception:", { error });
      }
    );
  }
}

app.component.html

<div class="fullwidth">
<cometchat-message-list
*ngIf="userObject"
[user]="userObject"
></cometchat-message-list>
</div>

warning

To fetch messages for a specific entity, you need to supplement it with User or Group Object.

---

Actions

Actions dictate how a component functions. They are divided into two types: Predefined and User-defined. You can override either type, allowing you to tailor the behavior of the component to fit your specific needs.

1. onThreadRepliesClick

onThreadRepliesClick is triggered when you click on the threaded message bubble. The onThreadRepliesClick action doesn't have a predefined behavior. You can override this action using the following code snippet.

app.component.ts

import { Component, OnInit } from '@angular/core';
import {  CometChatThemeService, CometChatUIKit } from '@cometchat/chat-uikit-angular';
import "@cometchat/uikit-elements";

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit{

  ngOnInit(): void {
    CometChat.getUser("uid").then((user:CometChat.User)=>{
      this.userObject=user;
    });
  }

  public userObject!: CometChat.User;

  constructor(private themeService:CometChatThemeService) {
    themeService.theme.palette.setMode("light")
    themeService.theme.palette.setPrimary({ light: "#6851D6", dark: "#6851D6" })
  }

  public handleOnThreadRepliesClick = ()=>{
    console.log("your custom on thread replies click");
  };

  onLogin(UID?: any) {
    CometChatUIKit.login({ uid: UID }).then(
      (user) => {
        setTimeout(() => {
          window.location.reload();
        }, 1000);
      },
      (error) => {
        console.log("Login failed with exception:", { error });
      }
    );
  }
}

app.component.html

<div class="fullwidth">

<cometchat-message-list
*ngIf="userObject"
[user]="userObject"
[onThreadRepliesClick]="handleOnThreadRepliesClick"
></cometchat-message-list>

</div>

---

2. onError

This action doesn't change the behavior of the component but rather listens for any errors that occur in the MessageList component.

app.component.ts

import { CometChat } from '@cometchat/chat-sdk-javascript';
import { Component, OnInit } from '@angular/core';
import {  CometChatThemeService, CometChatUIKit } from '@cometchat/chat-uikit-angular';
import "@cometchat/uikit-elements";

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit{

  ngOnInit(): void {
    CometChat.getUser("uid").then((user:CometChat.User)=>{
      this.userObject=user;
    });
  }

  public userObject!: CometChat.User;

  constructor(private themeService:CometChatThemeService) {
    themeService.theme.palette.setMode("light")
    themeService.theme.palette.setPrimary({ light: "#6851D6", dark: "#6851D6" })
  }

  public handleOnError = (error: CometChat.CometChatException) => {
    console.log("your custom on error action", error);
  };

  onLogin(UID?: any) {
    CometChatUIKit.login({ uid: UID }).then(
      (user) => {
        setTimeout(() => {
          window.location.reload();
        }, 1000);
      },
      (error) => {
        console.log("Login failed with exception:", { error });
      }
    );
  }
}

app.component.html

<div class="fullwidth">

<cometchat-message-list
*ngIf="userObject"
[user]="userObject"
[onError]="handleOnError"
></cometchat-message-list>

</div>

---

Filters

You can adjust the MessagesRequestBuilder in the MessageList Component to customize your message list. Numerous options are available to alter the builder to meet your specific needs. For additional details on MessagesRequestBuilder, please visit MessagesRequestBuilder.

In the example below, we are applying a filter to the messages based on a search substring and for a specific user. This means that only messages that contain the search term and are associated with the specified user will be displayed

app.component.ts

import { CometChat } from '@cometchat/chat-sdk-javascript';
import { Component, OnInit } from '@angular/core';
import {  CometChatThemeService, CometChatUIKit } from '@cometchat/chat-uikit-angular';
import "@cometchat/uikit-elements";

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit{

  ngOnInit(): void {
    CometChat.getUser("uid").then((user:CometChat.User)=>{
      this.userObject=user;
    });
  }

  public userObject!: CometChat.User;

  constructor(private themeService:CometChatThemeService) {
    themeService.theme.palette.setMode("light")
    themeService.theme.palette.setPrimary({ light: "#6851D6", dark: "#6851D6" })
  }

  messagesRequestBuilder = new CometChat.MessagesRequestBuilder().setLimit(5);

  onLogin(UID?: any) {
    CometChatUIKit.login({ uid: UID }).then(
      (user) => {
        setTimeout(() => {
          window.location.reload();
        }, 1000);
      },
      (error) => {
        console.log("Login failed with exception:", { error });
      }
    );
  }
}

app.component.html

<div class="fullwidth">

<cometchat-message-list
*ngIf="userObject"
[user]="userObject"
[messagesRequestBuilder]="messagesRequestBuilder"
></cometchat-message-list>

</div>

info

The following parameters in messageRequestBuilder will always be altered inside the message list

1. UID
2. GUID

Events

Events are emitted by a Component. By using event you can extend existing functionality. Being global events, they can be applied in Multiple Locations and are capable of being Added or Removed.

The list of events emitted by the Message List component is as follows.

Event	Description
ccOpenChat	this event alerts the listeners if the logged-in user has opened a user or a group chat
ccMessageEdited	Triggers whenever a loggedIn user edits any message from the list of messages .it will have three states such as: inProgress, success and error
ccMessageDeleted	Triggers whenever a loggedIn user deletes any message from the list of messages
ccActiveChatChanged	This event is triggered when the user navigates to a particular chat window.
ccMessageRead	Triggers whenever a loggedIn user reads any message.
ccLiveReaction	Triggers whenever a loggedIn clicks on live reaction

Adding CometChatMessageEvents Listener's

TypeScript

import {CometChatMessageEvents} from "@cometchat/chat-uikit-angular";

this.ccOpenChat = CometChatMessageEvents.ccOpenChat.subscribe(
 () => {
        // Your Code
  }   
);

this.ccMessageEdited = CometChatMessageEvents.ccMessageEdited.subscribe(
  () => {
        // Your Code
  }        
);

this.ccMessageDeleted = CometChatMessageEvents.ccMessageDeleted.subscribe(
  () => {
        // Your Code
  }      
);

this.ccActiveChatChanged = CometChatMessageEvents.ccActiveChatChanged.subscribe(
  () => {
        // Your Code
  }      
);

this.ccMessageRead = CometChatMessageEvents.ccMessageRead.subscribe(
  () => {
        // Your Code
  }      
);

this.ccLiveReaction = CometChatMessageEvents.ccLiveReaction.subscribe(
  () => {
        // Your Code
  }      
);

---

Removing CometChatMessageEvents Listener's

TypeScript

this.ccMessageEdited.unsubscribe();
this.ccActiveChatChanged.unsubscribe();

---

Customization

To fit your app's design requirements, you can customize the appearance of the Message List component. We provide exposed properties that allow you to modify the experience and behavior according to your specific needs.

Style

Using Style you can customize the look and feel of the component in your app, These parameters typically control elements such as the color, size, shape, and fonts used within the component.

1. MessageList Style

You can set the MessageListStyle to the MessageList Component Component to customize the styling.

app.component.ts

import { CometChat } from '@cometchat/chat-sdk-javascript';
import { Component, OnInit } from '@angular/core';
import {  CometChatThemeService, CometChatUIKit } from '@cometchat/chat-uikit-angular';
import { MessageListStyle } from '@cometchat/uikit-shared';
import "@cometchat/uikit-elements";

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit{

  ngOnInit(): void {
    CometChat.getUser("uid").then((user:CometChat.User)=>{
      this.userObject=user;
    });
  }

  public userObject!: CometChat.User;

  constructor(private themeService:CometChatThemeService) {
    themeService.theme.palette.setMode("light")
    themeService.theme.palette.setPrimary({ light: "#6851D6", dark: "#6851D6" })
  }

  messageListStyle = new MessageListStyle({
    background: "#fdf2ff",
    border: "1px solid #d608ff",
    borderRadius: "20px",
    loadingIconTint: "red",
    nameTextColor: "pink",
    threadReplyTextColor: "green"
  });

  onLogin(UID?: any) {
    CometChatUIKit.login({ uid: UID }).then(
      (user) => {
        setTimeout(() => {
          window.location.reload();
        }, 1000);
      },
      (error) => {
        console.log("Login failed with exception:", { error });
      }
    );
  }
}

app.component.html

<div class="fullwidth">

<cometchat-message-list
*ngIf="userObject"
[user]="userObject"
[messageListStyle]="messageListStyle"
></cometchat-message-list>

</div>

List of properties exposed by MessageListStyle

Property	Description	Code
border	Used to set border	border?: string,
borderRadius	Used to set border radius	borderRadius?: string;
background	Used to set background colour	background?: string;
height	Used to set height	height?: string;
width	Used to set width	width?: string;
loadingIconTint	used to set loading icon tint	loadingIconTint?: string;
emptyStateTextFont	used to set empty state text font	emptyStateTextFont?: string;
errorStateTextFont	used to set error state text font	errorStateTextFont?: string;
emptyStateTextColor	used to set empty state text color	emptyStateTextColor?: string;
errorStateTextColor	used to set error state text color	errorStateTextColor?: string;
nameTextColor	used to set sender/receiver name text color on a message bubble.	nameTextColor?: string;
nameTextFont	used to set sender/receiver name text font on a message bubble	nameTextFont?: string;
TimestampTextColor	used to set time stamp text color	TimestampTextColor?: string;
TimestampTextFont	used to set time stamp text font	TimestampTextFont?: string;
threadReplyTextColor	used to set thread reply text color	threadReplyTextColor?: string;
threadReplyTextFont	used to set thread reply text font	threadReplyTextFont?: string;
threadReplyIconTint	used to set thread reply icon tint	threadReplyIconTint?: string;
threadReplyUnreadTextColor	used to set thread reply unread text color	threadReplyUnreadTextColor?: string;
threadReplyUnreadTextFont	used to set thread reply unread text font	threadReplyUnreadTextFont?: string;
threadReplyUnreadBackground	used to set thread reply unread background	threadReplyUnreadBackground?: string;

---

2. Avatar Style

To apply customized styles to the Avatar component in the Message List Component, you can use the following code snippet. For further insights on Avatar Styles refer

app.component.ts

import { CometChat } from '@cometchat/chat-sdk-javascript';
import { Component, OnInit } from '@angular/core';
import {  CometChatThemeService, CometChatUIKit, AvatarStyle } from '@cometchat/chat-uikit-angular';
import "@cometchat/uikit-elements";

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit{

  ngOnInit(): void {
    CometChat.getUser("uid").then((user:CometChat.User)=>{
      this.userObject=user;
    });
  }

  public userObject!: CometChat.User;

  constructor(private themeService:CometChatThemeService) {
    themeService.theme.palette.setMode("light")
    themeService.theme.palette.setPrimary({ light: "#6851D6", dark: "#6851D6" })
  }

  avatarStyle = new AvatarStyle({
    backgroundColor:"#cdc2ff",
    border:"2px solid #6745ff",
    borderRadius:"10px",
    outerViewBorderColor:"#ca45ff",
    outerViewBorderRadius:"5px",
    nameTextColor:"#4554ff"
  });

  onLogin(UID?: any) {
    CometChatUIKit.login({ uid: UID }).then(
      (user) => {
        setTimeout(() => {
          window.location.reload();
        }, 1000);
      },
      (error) => {
        console.log("Login failed with exception:", { error });
      }
    );
  }
}

app.component.html

<div class="fullwidth">

<cometchat-message-list
*ngIf="userObject"
[user]="userObject"
[avatarStyle]="avatarStyle"
></cometchat-message-list>

</div>

3. DateSeparator Style

To apply customized styles to the DateSeparator in the Message list Component, you can use the following code snippet.

app.component.ts

import { CometChat } from '@cometchat/chat-sdk-javascript';
import { Component, OnInit } from '@angular/core';
import {  CometChatThemeService, CometChatUIKit, DateStyle } from '@cometchat/chat-uikit-angular';
import "@cometchat/uikit-elements";

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit{

  ngOnInit(): void {
    CometChat.getUser("uid").then((user:CometChat.User)=>{
      this.userObject=user;
    });
  }

  public userObject!: CometChat.User;

  constructor(private themeService:CometChatThemeService) {
    themeService.theme.palette.setMode("light")
    themeService.theme.palette.setPrimary({ light: "#6851D6", dark: "#6851D6" })
  }

  dateSeparatorStyle = new DateStyle({
    background:'red',
    border:'2px solid green',
    borderRadius:'15px'
  });

  onLogin(UID?: any) {
    CometChatUIKit.login({ uid: UID }).then(
      (user) => {
        setTimeout(() => {
          window.location.reload();
        }, 1000);
      },
      (error) => {
        console.log("Login failed with exception:", { error });
      }
    );
  }
}

app.component.html

<div class="fullwidth">

<cometchat-message-list
*ngIf="userObject"
[user]="userObject"
[dateSeparatorStyle]="dateSeparatorStyle"
></cometchat-message-list>

</div>

4. EmojiKeyboard Style

To apply customized styles to the EmojiKeyBoard in the Message list Component, you can use the following code snippet.

app.component.ts

import { CometChat } from '@cometchat/chat-sdk-javascript';
import { Component, OnInit } from '@angular/core';
import {  CometChatThemeService, CometChatUIKit, EmojiKeyboardStyle } from '@cometchat/chat-uikit-angular';
import "@cometchat/uikit-elements";

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit{

  ngOnInit(): void {
    CometChat.getUser("uid").then((user:CometChat.User)=>{
      this.userObject=user;
    });
  }

  public userObject!: CometChat.User;

  constructor(private themeService:CometChatThemeService) {
    themeService.theme.palette.setMode("light")
    themeService.theme.palette.setPrimary({ light: "#6851D6", dark: "#6851D6" })
  }

  emojiKeyboardStyle = new EmojiKeyboardStyle({
    background:'red',
    border:'2px solid green',
    borderRadius:'15px',
    activeIconTint:'yellow',
    textColor:'#8830f2'
  });

  onLogin(UID?: any) {
    CometChatUIKit.login({ uid: UID }).then(
      (user) => {
        setTimeout(() => {
          window.location.reload();
        }, 1000);
      },
      (error) => {
        console.log("Login failed with exception:", { error });
      }
    );
  }
}

app.component.html

<div class="fullwidth">

<cometchat-message-list
*ngIf="userObject"
[user]="userObject"
[emojiKeyboardStyle]="emojiKeyboardStyle"
></cometchat-message-list>

</div>

---

Functionality

These are a set of small functional customizations that allow you to fine-tune the overall experience of the component. With these, you can change text, set custom icons, and toggle the visibility of UI elements.

app.component.ts

import { CometChat } from '@cometchat/chat-sdk-javascript';
import { Component, OnInit } from '@angular/core';
import {  CometChatThemeService, CometChatUIKit } from '@cometchat/chat-uikit-angular';
import "@cometchat/uikit-elements";

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit{

  ngOnInit(): void {
    CometChat.getUser("uid").then((user:CometChat.User)=>{
      this.userObject=user;
    });
  }

  public userObject!: CometChat.User;

  constructor(private themeService:CometChatThemeService) {
    themeService.theme.palette.setMode("light")
    themeService.theme.palette.setPrimary({ light: "#6851D6", dark: "#6851D6" })
  }

  onLogin(UID?: any) {
    CometChatUIKit.login({ uid: UID }).then(
      (user) => {
        setTimeout(() => {
          window.location.reload();
        }, 1000);
      },
      (error) => {
        console.log("Login failed with exception:", { error });
      }
    );
  }
}

app.component.html

<div class="fullwidth">

<cometchat-message-list
*ngIf="userObject"
[user]="userObject"
[hideError]="true"
[disableReceipt]="true"
></cometchat-message-list>

</div>

---

Below is a list of customizations along with corresponding code snippets

Property	Description	Code
user report	Used to pass user object of which header specific details will be shown	[user]="userObject"
group report	Used to pass group object of which header specific details will be shown	[group]="groupObject"
alignment	used to set the alignmet of messages in CometChatMessageList. It can be either left or standard	MessageListAlignment.left
emptyStateText	used to set text which will be visible when no messages are available	emptyStateText="Your Custom Empty State text"
errorStateText	used to set text which will be visible when error in messages retrieval	errorStateText="Your Custom Error State text"
hideError	used to toggle visibility of error in MessageList	[hideError]="true"
disableSoundForMessages report	used to enable/disable sound for incoming/outgoing messages , default false	[disableSoundForMessages]="true"
customSoundForMessages report	used to set custom sound for outgoing message	customSoundForMessages="your custom sound for messages"
readIcon	used to set custom read icon visible at read receipt	readIcon="your custom read icon"
deliveredIcon	used to set custom delivered icon visible at read receipt	deliveredIcon="your custom delivered icon"
sentIcon	used to set custom sent icon visible at read receipt	sentIcon="your custom sent icon "
waitIcon	used to set custom wait icon visible at read receipt	waitIcon="your custom wait icon"
showAvatar	used to toggle visibility for avatar	[showAvatar]="true"
hideDateSeparator	used to toggle visibility of date separator	[hideDateSeparator]="true"
timestampAlignment	used to set receipt's time stamp alignment .It can be either top or bottom	timestampAlignment=TimestampAlignment.top
newMessageIndicatorText report	used to set new message indicator text	newMessageIndicatorText="Custom Indicator text"
scrollToBottomOnNewMessage	should scroll to bottom on new message? , by default false	[scrollToBottomOnNewMessages]="true"
disableReceipt	used to control visibility of read receipts	[disableReceipt]="true"
Disable Mentions	Sets whether mentions in text should be disabled. Processes the text formatters If there are text formatters available and the disableMentions flag is set to true, it removes any formatters that are instances of CometChatMentionsFormatter.	[disableMentions]="true"
Disable Reactions	Sets A boolean value indicating whether to disable reactions.Pass true to disable reactions, false to enable them.	[disableReactions]="true"

---

Advance

For advanced-level customization, you can set custom views to the component. This lets you tailor each aspect of the component to fit your exact needs and application aesthetics. You can create and define your views, layouts, and UI elements and then incorporate those into the component.

Templates

CometChatMessageTemplate is a pre-defined structure for creating message views that can be used as a starting point or blueprint for creating message views often known as message bubbles. For more information, you can refer to CometChatMessageTemplate.

You can set message Templates to MessageList by using the following code snippet

DateSeparatorPattern

You can customize the date pattern of the message list separator using the DateSeparatorPattern prop. Choose from predefined options like time, DayDate, DayDateTime, or DateTime.

Example

Default

Custom

app.component.ts

import { CometChat } from '@cometchat/chat-sdk-javascript';
import { Component, OnInit } from '@angular/core';
import {  CometChatThemeService, CometChatUIKit } from '@cometchat/chat-uikit-angular';
import { DatePattern } from '@cometchat/uikit-resources';
import "@cometchat/uikit-elements";

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit{

  ngOnInit(): void {
    CometChat.getUser("uid").then((user:CometChat.User)=>{
      this.userObject=user;
    });
  }

  public userObject!: CometChat.User;

  constructor(private themeService:CometChatThemeService) {
    themeService.theme.palette.setMode("light")
    themeService.theme.palette.setPrimary({ light: "#6851D6", dark: "#6851D6" })
  }

  DateSeparatorPattern = DatePatterns.DateTime;

  onLogin(UID?: any) {
    CometChatUIKit.login({ uid: UID }).then(
      (user) => {
        setTimeout(() => {
          window.location.reload();
        }, 1000);
      },
      (error) => {
        console.log("Login failed with exception:", { error });
      }
    );
  }
}

app.component.html

<div class="fullwidth">

<cometchat-message-list
*ngIf="userObject"
[user]="userObject"
[DateSeparatorPattern]="DateSeparatorPattern"
></cometchat-message-list>

</div>

---

DatePattern

You can modify the date pattern to your requirement using the datePattern prop. Choose from predefined options like time, DayDate, DayDateTime, or DateTime.

app.component.ts

import { CometChat } from '@cometchat/chat-sdk-javascript';
import { Component, OnInit } from '@angular/core';
import {  CometChatThemeService, CometChatUIKit } from '@cometchat/chat-uikit-angular';
import { DatePattern } from '@cometchat/uikit-resources';
import "@cometchat/uikit-elements";

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit{

  ngOnInit(): void {
    CometChat.getUser("uid").then((user:CometChat.User)=>{
      this.userObject=user;
    });
  }

  public userObject!: CometChat.User;

  constructor(private themeService:CometChatThemeService) {
    themeService.theme.palette.setMode("light")
    themeService.theme.palette.setPrimary({ light: "#6851D6", dark: "#6851D6" })
  }

  DatePattern = DatePatterns.DateTime;

  onLogin(UID?: any) {
    CometChatUIKit.login({ uid: UID }).then(
      (user) => {
        setTimeout(() => {
          window.location.reload();
        }, 1000);
      },
      (error) => {
        console.log("Login failed with exception:", { error });
      }
    );
  }
}

app.component.html

<div class="fullwidth">

<cometchat-message-list
*ngIf="userObject"
[user]="userObject"
[DatePattern]="DatePattern"
></cometchat-message-list>

</div>

---

Headerview

You can set custom headerView to the Message List component using the following method.

Example

app.component.ts

import { CometChat } from '@cometchat/chat-sdk-javascript';
import { Component, OnInit } from '@angular/core';
import {  CometChatThemeService, CometChatUIKit } from '@cometchat/chat-uikit-angular';
import "@cometchat/uikit-elements";

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit{

  ngOnInit(): void {
    CometChat.getUser("uid").then((user:CometChat.User)=>{
      this.userObject=user;
    });
  }

  public userObject!: CometChat.User;

  constructor(private themeService:CometChatThemeService) {
    themeService.theme.palette.setMode("light")
    themeService.theme.palette.setPrimary({ light: "#6851D6", dark: "#6851D6" })
  }

  onLogin(UID?: any) {
    CometChatUIKit.login({ uid: UID }).then(
      (user) => {
        setTimeout(() => {
          window.location.reload();
        }, 1000);
      },
      (error) => {
        console.log("Login failed with exception:", { error });
      }
    );
  }
}

app.component.html

<div class="fullwidth">

<cometchat-message-list
*ngIf="userObject"
[user]="userObject"
[headerView]="headerView"
></cometchat-message-list>

</div>

<ng-template #headerView>
  <div [ngStyle]="{ height: '40px', width: '100px', background: '#a46efa', borderRadius: '20px', display: 'flex', justifyContent: 'center', alignItems: 'center', margin: '10px' }">
    <button [ngStyle]="{ height: '40px', width: '40px', background: '#a46efa', border: 'none', display: 'flex', justifyContent: 'center', alignItems: 'center', cursor: 'pointer' }">
      <img src="img" [ngStyle]="{ height: 'auto', width: '100%', maxWidth: '100%', maxHeight: '100%', borderRadius: '50%' }" alt="bot" />
      <span>Chat Bot</span>
    </button>
</div>

</ng-template>

---

FooterView

You can set custom footerview to the Message List component using the following method.

Example

app.component.ts

import { CometChat } from '@cometchat/chat-sdk-javascript';
import { Component, OnInit } from '@angular/core';
import {  CometChatThemeService, CometChatUIKit } from '@cometchat/chat-uikit-angular';
import "@cometchat/uikit-elements";

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit{

  ngOnInit(): void {
    CometChat.getUser("uid").then((user:CometChat.User)=>{
      this.userObject=user;
    });
  }

  public userObject!: CometChat.User;

  constructor(private themeService:CometChatThemeService) {
    themeService.theme.palette.setMode("light")
    themeService.theme.palette.setPrimary({ light: "#6851D6", dark: "#6851D6" })
  }

  onLogin(UID?: any) {
    CometChatUIKit.login({ uid: UID }).then(
      (user) => {
        setTimeout(() => {
          window.location.reload();
        }, 1000);
      },
      (error) => {
        console.log("Login failed with exception:", { error });
      }
    );
  }
}

app.component.html

<div class="fullwidth">

<cometchat-message-list
*ngIf="userObject"
[user]="userObject"
[footerView]="footerView"
></cometchat-message-list>

</div>

<ng-template #footerView>
  <div [ngStyle]="{ height: '40px', width: '100px', background: '#a46efa', borderRadius: '20px', display: 'flex', justifyContent: 'center', alignItems: 'center', margin: '10px' }">
    <button [ngStyle]="{ height: '40px', width: '40px', background: '#a46efa', border: 'none', display: 'flex', justifyContent: 'center', alignItems: 'center', cursor: 'pointer' }">
      <img src="img" [ngStyle]="{ height: 'auto', width: '100%', maxWidth: '100%', maxHeight: '100%', borderRadius: '50%' }" alt="bot" />
      <span>Chat Bot</span>
    </button>
</div>

</ng-template>

---

ErrorStateView

You can set a custom errorStateView to match the error view of your app.

Example

Default

Custom

app.component.ts

import { CometChat } from '@cometchat/chat-sdk-javascript';
import { Component, OnInit } from '@angular/core';
import {  CometChatThemeService, CometChatUIKit } from '@cometchat/chat-uikit-angular';
import "@cometchat/uikit-elements";

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit{

  ngOnInit(): void {
    CometChat.getUser("uid").then((user:CometChat.User)=>{
      this.userObject=user;
    });
  }

  public userObject!: CometChat.User;

  constructor(private themeService:CometChatThemeService) {
    themeService.theme.palette.setMode("light")
    themeService.theme.palette.setPrimary({ light: "#6851D6", dark: "#6851D6" })
  }

  onLogin(UID?: any) {
    CometChatUIKit.login({ uid: UID }).then(
      (user) => {
        setTimeout(() => {
          window.location.reload();
        }, 1000);
      },
      (error) => {
        console.log("Login failed with exception:", { error });
      }
    );
  }
}

app.component.html

<div class="fullwidth">

<cometchat-message-list
*ngIf="userObject"
[user]="userObject"
[errorStateView]="errorStateView"
></cometchat-message-list>

</div>

<ng-template #errorStateView>
  <div style="height: 100vh; width: 100vw">
    <img
      src="https://cdn0.iconfinder.com/data/icons/shift-interfaces/32/Error-512.png"
      alt="error icon"
      style="height:100px; width: 100px; justify-content: center"
    />
  </div>
</ng-template>

---

EmptyStateView

The emptyStateView method provides the ability to set a custom empty state view in your app. An empty state view is displayed when there are no messages for a particular user.

Example

app.component.ts

import { CometChat } from '@cometchat/chat-sdk-javascript';
import { Component, OnInit } from '@angular/core';
import {  CometChatThemeService, CometChatUIKit } from '@cometchat/chat-uikit-angular';
import "@cometchat/uikit-elements";

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit{

  ngOnInit(): void {
    CometChat.getUser("uid").then((user:CometChat.User)=>{
      this.userObject=user;
    });
  }

  public userObject!: CometChat.User;

  constructor(private themeService:CometChatThemeService) {
    themeService.theme.palette.setMode("light")
    themeService.theme.palette.setPrimary({ light: "#6851D6", dark: "#6851D6" })
  }

  onLogin(UID?: any) {
    CometChatUIKit.login({ uid: UID }).then(
      (user) => {
        setTimeout(() => {
          window.location.reload();
        }, 1000);
      },
      (error) => {
        console.log("Login failed with exception:", { error });
      }
    );
  }
}

app.component.html

<div class="fullwidth">

<cometchat-message-list
*ngIf="userObject"
[user]="userObject"
[emptyStateView]="emptyStateView"
></cometchat-message-list>

</div>


<ng-template #emptyStateView>
  <div>
    Your Custom Empty State
  </div>
</ng-template>

---

LoadingStateView

The loadingStateView property allows you to set a custom loading view in your app. This feature enables you to maintain a consistent look and feel throughout your application,

Example

Default

Custom

app.component.ts

import { CometChat } from '@cometchat/chat-sdk-javascript';
import { Component, OnInit } from '@angular/core';
import {  CometChatThemeService, CometChatUIKit, LoaderStyle } from '@cometchat/chat-uikit-angular';
import "@cometchat/uikit-elements";

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit{

  ngOnInit(): void {
    CometChat.getUser("uid").then((user:CometChat.User)=>{
      this.userObject=user;
    });
  }

  public userObject!: CometChat.User;

  constructor(private themeService:CometChatThemeService) {
    themeService.theme.palette.setMode("light")
    themeService.theme.palette.setPrimary({ light: "#6851D6", dark: "#6851D6" })
  }

  getLoaderStyle: LoaderStyle = new LoaderStyle({
    iconTint: "red",
    background: "transparent",
    height: "20px",
    width: "20px",
    border: "none",
    borderRadius: "0",
  });

  onLogin(UID?: any) {
    CometChatUIKit.login({ uid: UID }).then(
      (user) => {
        setTimeout(() => {
          window.location.reload();
        }, 1000);
      },
      (error) => {
        console.log("Login failed with exception:", { error });
      }
    );
  }
}

app.component.html

<div class="fullwidth">

<cometchat-message-list
*ngIf="userObject"
[user]="userObject"
[loadingStateView]="loadingStateView"
></cometchat-message-list>

</div>


<ng-template #loadingStateView>
  <cometchat-loader
  iconURL="icon"
  loaderStyle="getLoaderStyle()"
></cometchat-loader>
</ng-template>

---

TextFormatters

Assigns the list of text formatters. If the provided list is not null, it sets the list. Otherwise, it assigns the default text formatters retrieved from the data source. To configure the existing Mentions look and feel check out CometChatMentionsFormatter

app.component.ts

import { CometChat } from '@cometchat/chat-sdk-javascript';
import { Component, OnInit } from '@angular/core';
import {  CometChatThemeService, CometChatUIKit } from '@cometchat/chat-uikit-angular';
import "@cometchat/uikit-elements";
import HashTagTextFormatter from '../HashTagTextFormatter';


@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit{

  ngOnInit(): void {
    CometChat.getUser("uid").then((user:CometChat.User)=>{
      this.userObject=user;
    });
  }

  public userObject!: CometChat.User;
  public textFormatters = [new HashTagTextFormatter];

  constructor(private themeService:CometChatThemeService) {
    themeService.theme.palette.setMode("light")
    themeService.theme.palette.setPrimary({ light: "#6851D6", dark: "#6851D6" })
  }

  onLogin(UID?: any) {
    CometChatUIKit.login({ uid: UID }).then(
      (user) => {
        setTimeout(() => {
          window.location.reload();
        }, 1000);
      },
      (error) => {
        console.log("Login failed with exception:", { error });
      }
    );
  }
}

HashTagTextFormatter.ts

import { CometChatTextFormatter } from "@cometchat/uikit-shared";

class HashTagTextFormatter extends CometChatTextFormatter {
  constructor() {
    super();
    // Set the tracking character to #
    this.setTrackingCharacter("#");

    // Define regex patterns to find specific text patterns
    this.setRegexPatterns([
      /\B#(\w+)\b/g, // Matches hashtags starting with #
    ]);

    // Define regex patterns to replace formatter text with original text
    this.setRegexToReplaceFormatting([
      /#(\w+)/g, // Replace hashtags without formatting
    ]);

    // Set callback functions for key up and key down events
    this.setKeyUpCallBack(this.onKeyUp.bind(this));
    this.setKeyDownCallBack(this.onKeyDown.bind(this));

    // Set the re-render callback function
    this.setReRender(() => {
      // Trigger re-rendering of the message composer component
      // This could involve updating the UI with the formatted text
      console.log("Re-rendering message composer to update text content.");
    });

    // Initialize composer tracking
    this.initializeComposerTracking();
  }

  initializeComposerTracking() {
    // Get the reference to the input field (composer)
    const composerInput = document.getElementById("yourComposerInputId");

    // Set the reference to the input field
    this.setInputElementReference(composerInput);
  }

  getCaretPosition(): number {
    if (!this.inputElementReference) return 0;

    const selection = window.getSelection();
    if (!selection || selection.rangeCount === 0) return 0;

    const range = selection.getRangeAt(0);
    const clonedRange = range.cloneRange();
    clonedRange.selectNodeContents(this.inputElementReference);
    clonedRange.setEnd(range.endContainer, range.endOffset);

    return clonedRange.toString().length;
  }

  setCaretPosition(position: number) {
    if (!this.inputElementReference) return;

    const range = document.createRange();
    const selection = window.getSelection();
    if (!selection) return;

    range.setStart(
      this.inputElementReference.childNodes[0] || this.inputElementReference,
      position
    );
    range.collapse(true);

    selection.removeAllRanges();
    selection.addRange(range);
  }

  override onKeyUp(event: KeyboardEvent) {
    if (event.key === this.trackCharacter) {
      this.startTracking = true;
    }
    // Custom logic to format hashtags as users type in the composer
    if (this.startTracking && (event.key === " " || event.key === "Enter")) {
      const caretPosition = this.getCaretPosition();
      this.formatText();
      this.setCaretPosition(caretPosition);
    }
    // Check if the last character typed was not a space or enter
    // and if the caret position is at the end, then we need to set start tracking to false
    if (
      this.startTracking &&
      event.key !== " " &&
      event.key !== "Enter" &&
      this.getCaretPosition() === this.inputElementReference?.innerText?.length
    ) {
      this.startTracking = false;
    }
  }

  formatText() {
    const inputValue =
      this.inputElementReference?.innerText ||
      this.inputElementReference?.textContent ||
      "";
    const formattedText = this.getFormattedText(inputValue);
    // Update the composer with formatted text
    if (this.inputElementReference) {
      this.inputElementReference.innerHTML = formattedText || "";
      // Trigger re-render of the composer
      this.reRender();
    }
  }

  override onKeyDown(event: KeyboardEvent) {
    // Custom onKeyDown logic can be added here
  }

  override getFormattedText(inputText: string) {
    if (!inputText) {
      // Edit at cursor position and return void
      return;
    }
    // Perform custom logic to format text (e.g., formatting hashtags)
    return this.customLogicToFormatText(inputText);
  }

  customLogicToFormatText(inputText: string) {
    // Replace hashtags with HTML span elements to change color to green
    return inputText.replace(
      /\B#(\w+)\b/g,
      '<span style="color: #5dff05;">#$1</span>'
    );
  }

  override getOriginalText(inputText: string) {
    // Sample implementation
    if (!inputText) {
      return "";
    }
    // Remove formatting and return original text
    for (let i = 0; i < this.regexToReplaceFormatting.length; i++) {
      let regexPattern = this.regexToReplaceFormatting[i];

      if (inputText) {
        inputText = inputText.replace(regexPattern, "#$1");
      }
    }

    return inputText;
  }
}

export default HashTagTextFormatter;

app.component.html

<div class="fullwidth">

<cometchat-message-list
*ngIf="userObject"
[user]="userObject"
[textFormatters]="textFormatters"
></cometchat-message-list>

</div>

---

Configuration

Configurations offer the ability to customize the properties of each component within a Composite Component.

MessageInformation

From the MessageList, you can navigate to the MesssageInformation component as shown in the image.

If you wish to modify the properties of the MesssageInformation Component, you can use the MessageInformationConfiguration object.

app.component.ts

import { CometChat } from '@cometchat/chat-sdk-javascript';
import { Component, OnInit } from '@angular/core';
import {  CometChatThemeService, CometChatUIKit } from '@cometchat/chat-uikit-angular';
import { MessageInformationConfiguration, MessageInformationStyle } from '@cometchat/uikit-shared';

import "@cometchat/uikit-elements";

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit{

  ngOnInit(): void {
    CometChat.getUser("uid").then((user:CometChat.User)=>{
      this.userObject=user;
    });
  }

  public userObject!: CometChat.User;

  constructor(private themeService:CometChatThemeService) {
    themeService.theme.palette.setMode("light")
    themeService.theme.palette.setPrimary({ light: "#6851D6", dark: "#6851D6" })
  }

  public messageInformationConfiguration = new MessageInformationConfiguration({
    messageInformationStyle: new MessageInformationStyle({
      background: "#f7f2fa",
      border: "2px solid #d895fc",
      borderRadius: "20px",
      captionTextColor: "#8629e3",
      titleTextColor: "#908deb",
    })
  });

  onLogin(UID?: any) {
    CometChatUIKit.login({ uid: UID }).then(
      (user) => {
        setTimeout(() => {
          window.location.reload();
        }, 1000);
      },
      (error) => {
        console.log("Login failed with exception:", { error });
      }
    );
  }
}

app.component.html

<div class="fullwidth">

<cometchat-message-list
*ngIf="userObject"
[user]="userObject"
[messageInformationConfiguration]="messageInformationConfiguration"
></cometchat-message-list>

</div>

The MessageInformationConfiguration indeed provides access to all the Action, Filters, Styles, Functionality, and Advanced properties of the MesssageInformation component.

Please note that the properties marked with the report symbol are not accessible within the Configuration Object.

Example

Default

Custom

In the above example, we are styling a few properties of the MesssageInformation component using MessageInformationConfiguration.

Reaction

If you wish to modify the properties of the Reaction Component, you can use the reactionsConfiguration object.

app.component.ts

import { CometChat } from '@cometchat/chat-sdk-javascript';
import { Component, OnInit } from '@angular/core';
import {  CometChatThemeService, CometChatUIKit } from '@cometchat/chat-uikit-angular';
import { ReactionsConfiguration, ReactionsStyle } from '@cometchat/uikit-shared';

import "@cometchat/uikit-elements";

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit{

  ngOnInit(): void {
    CometChat.getUser("uid").then((user:CometChat.User)=>{
      this.userObject=user;
    });
  }

  public userObject!: CometChat.User;

  constructor(private themeService:CometChatThemeService) {
    themeService.theme.palette.setMode("light")
    themeService.theme.palette.setPrimary({ light: "#6851D6", dark: "#6851D6" })
  }

  public reactionsConfiguration = new ReactionsConfiguration({
    reactionsStyle: new ReactionsStyle({
      border:'2px solid #8742f5',
      activeReactionBackground:'#b88cff',
      background:'#7b34ed',
      baseReactionBackground:'#ebe3ff',
      borderRadius:'20px'
    })
    //properties of reactions
  });

  onLogin(UID?: any) {
    CometChatUIKit.login({ uid: UID }).then(
      (user) => {
        setTimeout(() => {
          window.location.reload();
        }, 1000);
      },
      (error) => {
        console.log("Login failed with exception:", { error });
      }
    );
  }
}

app.component.html

<div class="fullwidth">

<cometchat-message-list
*ngIf="userObject"
[user]="userObject"
[reactionsConfiguration]="reactionsConfiguration"
></cometchat-message-list>

</div>