Reaction List

Reaction List — CometChat documentation.

Overview

The Reaction List component provides a comprehensive display of reactions associated with a message, showcasing which reactions were made by individual users. Additionaly, users can interact with the list to remove their own reactions.

Usage

Integration

The following code snippet illustrates how you can directly incorporate the Reactions list component into your app.

app.module.ts

import { CUSTOM_ELEMENTS_SCHEMA, NgModule } from "@angular/core";
import { BrowserModule } from "@angular/platform-browser";
import { AppComponent } from "./app.component";

@NgModule({
  imports: [BrowserModule],
  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 { ReactionListStyle } from '@cometchat/uikit-shared';
import "@cometchat/uikit-elements";

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

  constructor(private themeService:CometChatThemeService) {
    themeService.theme.palette.setMode("light")
    themeService.theme.palette.setPrimary({ light: "#6851D6", dark: "#6851D6" })
  }
  public messageObject!: CometChat.TextMessage;
  ngOnInit(): void {
    CometChat.getMessageDetails("messageId").then((message) => {
        this.messageObject = message;
    }).catch((error) => {
      console.error('Error fetching message details:', error);
    });
  }
  reactionListStyle = new ReactionListStyle({
    background:'#9a41fa',
    border:'2px solid #6e2eb3',
    borderRadius:'20px',
    activeEmojiBackground:'#d4b2f7',
    subtitleTextColor:'#f4ebff',
  });

  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-reaction-list
    *ngIf="messageObject"
    [messageObject]="messageObject"
    [reactionListStyle]="reactionListStyle"
  ></cometchat-reaction-list>
</div>

---

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. reactionItemClicked

The reactionItemClicked event gets activated when a user clicks on a reaction item within the CometChat Reaction List component. This event provides a way to capture and respond to user interactions with specific reactions.

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 {

  constructor(private themeService:CometChatThemeService) {
    themeService.theme.palette.setMode("light")
    themeService.theme.palette.setPrimary({ light: "#6851D6", dark: "#6851D6" })
  }
  public messageObject!: CometChat.TextMessage;
  ngOnInit(): void {
    CometChat.getMessageDetails("messageId").then((message) => {
        this.messageObject = message;
    }).catch((error) => {
      console.error('Error fetching message details:', error);
    });
  }
  public handleReactionOnItemClicked = () => {
    console.log("your custom on reaction item click actions");
  }

  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-reaction-list
    *ngIf="messageObject"
    [messageObject]="messageObject"
    [reactionItemClicked]="handleReactionOnItemClicked"
  ></cometchat-reaction-list>
</div>

---

Filters

Filters allow you to customize the data displayed in a list within a Component. You can filter the list based on your specific criteria, allowing for a more customized. Filters can be applied using RequestBuilders of Chat SDK.

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

In the example below, we demonstrate the application of a filter to the reactions list. This filter allows you to specify a limit of the users who have reacted to the perticular message.

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 {

  constructor(private themeService:CometChatThemeService) {
    themeService.theme.palette.setMode("light")
    themeService.theme.palette.setPrimary({ light: "#6851D6", dark: "#6851D6" })
  }
  public messageObject!: CometChat.TextMessage;
  ngOnInit(): void {
    CometChat.getMessageDetails("messageId").then((message) => {
        this.messageObject = message;
    }).catch((error) => {
      console.error('Error fetching message details:', error);
    });
  }
  reactionsRequestBuilder = new CometChat.ReactionsRequestBuilder().setLimit(2);
  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-reaction-list
    *ngIf="messageObject"
    [messageObject]="messageObject"
    [reactionsRequestBuilder]="reactionsRequestBuilder"
  ></cometchat-reaction-list>
</div>

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 Reactions list component does not produce any events.

Customization

To fit your app’s design requirements, you can customize the appearance of the Reaction List component. We provide exposed methods 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. reactionListStyle

To customize the appearance, you can assign a reactionListStyle object to the Reactions List component.

Example

In this example, we are employing the reactionListStyle.

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 { ReactionListStyle } from '@cometchat/uikit-shared';
import "@cometchat/uikit-elements";

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

  constructor(private themeService:CometChatThemeService) {
    themeService.theme.palette.setMode("light")
    themeService.theme.palette.setPrimary({ light: "#6851D6", dark: "#6851D6" })
  }
  public messageObject!: CometChat.TextMessage;
  ngOnInit(): void {
    CometChat.getMessageDetails("messageId").then((message) => {
        this.messageObject = message;
    }).catch((error) => {
      console.error('Error fetching message details:', error);
    });
  }
  reactionListStyle = new ReactionListStyle({
    background:'#9a41fa',
    border:'2px solid #6e2eb3',
    borderRadius:'20px',
    activeEmojiBackground:'#d4b2f7',
    subtitleTextColor:'#f4ebff',
  });

  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-reaction-list
    *ngIf="messageObject"
    [messageObject]="messageObject"
    [reactionListStyle]="reactionListStyle"
  ></cometchat-reaction-list>
</div>

---

List of properties exposed by ReactionsListStyle

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;
sliderEmojiFont	used to set the font of slider emoji	sliderEmojiFont?: string;
sliderEmojiCountFont	used to set the font of the slider emoji count	sliderEmojiCountFont?: string;
sliderEmojiCountColor	used to set the color of the slider emoji count	sliderEmojiCountColor?: string;
activeEmojiBackground	used to set the active emoji background	activeEmojiBackground?: string;
loadingIconTint	used to set the loading icon color	loadingIconTint?: string;
errorIconTint	used to set the error icon color	errorIconTint?: string;
tailViewFont	used to set the tail view font	tailViewFont?: string;
subtitleTextFont	used to set the subtitle text font	subtitleTextFont?: string;
subtitleTextColor	used to set the subtitle text color	subtitleTextColor?: string;
dividerTint	used to set the divider color	dividerTint?: string;

---

2. Avatar Style

If you want to apply customized styles to the Avatar component within the Reaction List Component, you can use the following code snippet. For more information you can refer Avatar Styles.

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 {

  constructor(private themeService:CometChatThemeService) {
    themeService.theme.palette.setMode("light")
    themeService.theme.palette.setPrimary({ light: "#6851D6", dark: "#6851D6" })
  }
  public messageObject!: CometChat.TextMessage;
  ngOnInit(): void {
    CometChat.getMessageDetails("messageId").then((message) => {
        this.messageObject = message;
    }).catch((error) => {
      console.error('Error fetching message details:', error);
    });
  }
   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-reaction-list
    *ngIf="messageObject"
    [messageObject]="messageObject"
    [avatarStyle]="avatarStyle"
  ></cometchat-reaction-list>
</div>

3. ListItem Style

If you want to apply customized styles to the List Item component within the Reaction List Component, you can use the following code snippet. For more information, you can refer ListItem Styles.

app.component.ts

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

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

  constructor(private themeService:CometChatThemeService) {
    themeService.theme.palette.setMode("light")
    themeService.theme.palette.setPrimary({ light: "#6851D6", dark: "#6851D6" })
  }
  public messageObject!: CometChat.TextMessage;
  ngOnInit(): void {
    CometChat.getMessageDetails("messageId").then((message) => {
        this.messageObject = message;
    }).catch((error) => {
      console.error('Error fetching message details:', error);
    });
  }
   listItemStyle: ListItemStyle = new ListItemStyle({
    background: "transparent",
    padding: "5px",
    border: "1px solid #e9b8f5",
    titleColor: "#8830f2",
    borderRadius: "20px",
    width: "100% !important"
  });

  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-reaction-list
    *ngIf="messageObject"
    [messageObject]="messageObject"
    [listitemstyle]="listItemStyle"
  ></cometchat-reaction-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 {

  constructor(private themeService:CometChatThemeService) {
    themeService.theme.palette.setMode("light")
    themeService.theme.palette.setPrimary({ light: "#6851D6", dark: "#6851D6" })
  }
  public messageObject!: CometChat.TextMessage;
  ngOnInit(): void {
    CometChat.getMessageDetails("messageId").then((message) => {
        this.messageObject = message;
    }).catch((error) => {
      console.error('Error fetching message details:', 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-reaction-list
    *ngIf="messageObject"
    [messageObject]="messageObject"
    [loadingIconURL]="your custom icon"
    [errorIconURL]="your custom icon"
  ></cometchat-reaction-list>
</div>

---

Below is a customizations list along with corresponding code snippets

Property	Description	Code
loadingIconURL	used to set the custom loading icon	loadingIconURL="'your custom loading icon url'"
errorIconURL	used to set the error icon	errorIconURL="'your custom error icon url'"