Message Header - CometChat Docs

MessageHeader is a Component that showcases the User or Group details in the toolbar. Furthermore, it also presents a typing indicator and a back navigation button for ease of use.

The MessageHeader is comprised of the following components:

Components	Description
ListItem Component	This component’s view consists of avatar, status indicator , title, and subtitle. The fields are then mapped with the SDK’s user, group class.
Back Button	BackButton that allows users to navigate back from the current activity or screen to the previous one

Usage

Integration

import { CometChat } from '@cometchat/chat-sdk-react-native';
import { CometChatMessageHeader, MessageHeaderStyleInterface } from '@cometchat/chat-uikit-react-native';
import React from 'react';

function App(): React.JSX.Element {
    const [chatUser, setChatUser] = React.useState<CometChat.User| undefined>();

    React.useEffect(() => {
        CometChat.getUser("uid").then((user) => {
            setChatUser(user);
        })
    }, []);

  const messageHeaderStyle : MessageHeaderStyleInterface = {
     backgroundColor: "#c7caed"
  }

  return (
    <>
        { chatUser && <CometChatMessageHeader
             user={chatUser}
             style={messageHeaderStyle}
          />
         }
    </>
  );
}

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. OnBack

OnBack is triggered when you click on the back button of the Message Header component. You can override this action using the following code snippet.

import { CometChat } from '@cometchat/chat-sdk-react-native';
import { CometChatMessageHeader, MessageHeaderStyleInterface } from '@cometchat/chat-uikit-react-native';
import React from 'react';

function App(): React.JSX.Element {
    const [chatUser, setChatUser] = React.useState<CometChat.User| undefined>();

    React.useEffect(() => {
        CometChat.getUser("uid").then((user) => {
            setChatUser(user);
        })
    }, []);

  let messageHeaderStyle : MessageHeaderStyleInterface = {
     backgroundColor: "#c7caed"
  }

  const onBackHandler = () => {
    //code
  }

  return (
    <>
        { chatUser && <CometChatMessageHeader
             user={chatUser}
             style={messageHeaderStyle}
             onBack={onBackHandler}
          />
         }
    </>
  );
}

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. The MessageHeader component does not have any exposed filters.

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 MessageHeader component does not produce any events.

Customization

To fit your app’s design requirements, you can customize the appearance of the conversation 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. MessageHeader Style

To customize the appearance, you can assign a MessageHeaderStyle object to the MessageHeader component.

import { CometChat } from '@cometchat/chat-sdk-react-native';
import { CometChatMessageHeader, MessageHeaderStyleInterface } from '@cometchat/chat-uikit-react-native';
import React from 'react';

function App(): React.JSX.Element {
    const [chatUser, setChatUser] = React.useState<CometChat.User| undefined>();

    React.useEffect(() => {
        CometChat.getUser("uid").then((user) => {
            setChatUser(user);
        })
    }, []);

  const messageHeaderStyle : MessageHeaderStyleInterface = {
     backgroundColor: "#c7caed"
  }

  return (
    <>
        { chatUser && <CometChatMessageHeader
             user={chatUser}
             style={messageHeaderStyle}
          />
         }
    </>
  );
}

The properties exposed by MessageHeaderStyle are as follows:

Property	Type	Description
backgroundColor	string	Sets the background colour for message header
width	string \| number	Sets the width for message header
height	string \| number	Sets the height for message header
border	BorderStyleInterface	Sets the border colour for message header
borderRadius	number	sets the border radius for message header
backIconTint	string	Sets the tint colour for back icon for message header
typingIndicatorTextColor	string	Sets the typing indicator text colour for message header
typingIndicatorTextFont	FontStyleInterface	Sets the typing indicator text font for message header
onlineStatusColor	string	Sets the online status colour for message header
subtitleTextColor	string	Sets the subtitle colour for message header
subtitleTextFont	FontStyleInterface	Sets the subtitle font for message header

2. Avatar Style

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

import { CometChat } from '@cometchat/chat-sdk-react-native';
import { CometChatMessageHeader, BorderStyleInterface, AvatarStyleInterface } from '@cometchat/chat-uikit-react-native';
import React from 'react';

function App(): React.JSX.Element {
    const [chatUser, setChatUser] = React.useState<CometChat.User| undefined>();

    React.useEffect(() => {
        CometChat.getUser("uid").then((user) => {
            setChatUser(user);
        })
    }, []);

    const messageHeaderStyle : MessageHeaderStyleInterface = {
       backgroundColor: "#c7caed"
    }

    const borderStyle : BorderStyleInterface = {
       borderStyle: "solid",
       borderColor: "#6851D6",
       borderWidth: 1
    }

    const avatarStyle : AvatarStyleInterface = {
     border: borderStyle
    }

    return (
      <>
        { chatUser && <CometChatMessageHeader
             user={chatUser}
             style={messageHeaderStyle}
             avatarStyle={avatarStyle}
          />
         }
      </>
    );
}

3. ListItem Style

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

import { CometChat } from '@cometchat/chat-sdk-react-native';
import { CometChatMessageHeader, MessageHeaderStyleInterface } from '@cometchat/chat-uikit-react-native';
import React from 'react';

function App(): React.JSX.Element {
    const [chatUser, setChatUser] = React.useState<CometChat.User| undefined>();

    React.useEffect(() => {
        CometChat.getUser("uid").then((user) => {
            setChatUser(user);
        })
    }, []);

    const messageHeaderStyle : MessageHeaderStyleInterface = {
       backgroundColor: "#c7caed"
    }

    const listItemStyle : ListItemStyleInterface = {
       backgroundColor: "transparent",
       titleColor:"#6851D6",
    };

    return (
      <>
        { chatUser && <CometChatMessageHeader
             user={chatUser}
             style={messageHeaderStyle}
             listItemStyle={listItemStyle}
          />
         }
      </>
    );
}

4. StatusIndicator Style

If you want to apply customized styles to the Status Indicator component within the MessageHeader Component, you can use the following code snippet. For more information you can refer StatusIndicator Styles.

import { CometChat } from '@cometchat/chat-sdk-react-native';
import { CometChatMessageHeader, MessageHeaderStyleInterface, StatusIndicatorStyleInterface } from '@cometchat/chat-uikit-react-native';
import React from 'react';

function App(): React.JSX.Element {
    const [chatUser, setChatUser] = React.useState<CometChat.User| undefined>();

    React.useEffect(() => {
        CometChat.getUser("uid").then((user) => {
            setChatUser(user);
        })
    }, []);

    const messageHeaderStyle : MessageHeaderStyleInterface = {
       backgroundColor: "#c7caed"
    }

    const statusIndicatorStyle : StatusIndicatorStyleInterface= {
        backgroundColor: "red",
        height: 15,
        width: 15,
        border: borderStyle,
        borderRadius: 100,
     };

    return (
      <>
        { chatUser && <CometChatMessageHeader
             user={chatUser}
             style={messageHeaderStyle}
             statusIndicatorStyle={statusIndicatorStyle}
          />
         }
      </>
    );
}

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. Here is a code snippet demonstrating how you can customize the functionality of the Message Header component.

import { CometChat } from "@cometchat/chat-sdk-react-native";
import {
  CometChatMessageHeader,
  MessageHeaderStyleInterface,
} from "@cometchat/chat-uikit-react-native";
import React from "react";

function App(): React.JSX.Element {
  const [chatUser, setChatUser] = React.useState<CometChat.User | undefined>();

  React.useEffect(() => {
    CometChat.getUser("uid").then((user) => {
      setChatUser(user);
    });
  }, []);

  const messageHeaderStyle: MessageHeaderStyleInterface = {
    backgroundColor: "#c7caed",
  };

  return (
    <>
      {chatUser && (
        <CometChatMessageHeader
          user={chatUser}
          style={messageHeaderStyle}
          hideBackIcon={true}
        />
      )}
    </>
  );
}

Following is a list of customizations along with their corresponding code snippets:

Property	Description	Code
user	Used to pass user object of which header specific details will be shown	`user={chatUser}`
group	Used to pass group object of which header specific details will be shown	`group={chatGroup}`
protectedGroupIcon	Used to set custom protected group icon	`protectedGroupIcon={{uri: <image url>}}` OR import customProtectedGroupIcon from "./customProtectedGroupIcon.svg"; ``protectedGroupIcon={customProtectedGroupIcon}
privateGroupIcon	Used to set custom private group icon	`privateGroupIcon={{uri: <image url>}}` OR import customPrivateGroupIcon from "./customPrivateGroupIcon.svg"; ``privateGroupIcon={customPrivateGroupIcon}
hideBackIcon	Used to toggle back button visibility	`hideBackhideBackIconButton={true}`
disableTyping	Used to enable disable typing indicators	`disableTyping={true}`
disableUsersPresence	Used to toggle functionality to show user’s presence	`disableUsersPresence={true`

Advanced

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.

SubtitleView

By using the SubtitleView method, you can modify the SubtitleView to meet your specific needs.

import { CometChat } from '@cometchat/chat-sdk-react-native';
import { CometChatMessageHeader, MessageHeaderStyleInterface } from '@cometchat/chat-uikit-react-native';
import React from 'react';

function App(): React.JSX.Element {
    const [chatUser, setChatUser] = React.useState<CometChat.User| undefined>();

    React.useEffect(() => {
        CometChat.getUser("uid").then((user) => {
            setChatUser(user);
        })
    }, []);

  const messageHeaderStyle : MessageHeaderStyleInterface = {
     backgroundColor: "#c7caed"
  }

  function formatTime(timestamp: number) {
    const date = new Date(timestamp * 1000);
    return date.toLocaleString();
  }

  const getSubtitleView = () =>{
    return (
      <Text>{formatTime(chatUser!.getLastActiveAt())}</Text>
    )
  }

  return (
    <>
        { chatUser && <CometChatMessageHeader
             user={chatUser}
             style={messageHeaderStyle}
             SubtitleView={getSubtitleView}
          />
         }
    </>
  );
}

Example

BackButtonIcon

You can customize the Back Icon according to your specific requirements by using the backButtonIcon method.

import { CometChat } from "@cometchat/chat-sdk-react-native";
import {
  CometChatMessageHeader,
  MessageHeaderStyleInterface,
} from "@cometchat/chat-uikit-react-native";
import React from "react";
import BackArrow from "./back-arrow.png";

function App(): React.JSX.Element {
  const [chatUser, setChatUser] = React.useState<CometChat.User | undefined>();

  React.useEffect(() => {
    CometChat.getUser("uid").then((user) => {
      setChatUser(user);
    });
  }, []);

  const messageHeaderStyle: MessageHeaderStyleInterface = {
    backgroundColor: "#c7caed",
  };

  return (
    <>
      {chatUser && (
        <CometChatMessageHeader
          user={chatUser}
          style={messageHeaderStyle}
          backButtonIcon={BackArrow}
        />
      )}
    </>
  );
}

Example

AppBarOptions

You can customize the Menu options to meet your specific needs by using the AppBarOptions method.

import { CometChat } from '@cometchat/chat-sdk-react-native';
import { CometChatMessageHeader, MessageHeaderStyleInterface } from '@cometchat/chat-uikit-react-native';
import React from 'react';
import Call from './Call.png';

function App(): React.JSX.Element {
    const [chatUser, setChatUser] = React.useState<CometChat.User| undefined>();

    React.useEffect(() => {
        CometChat.getUser("uid").then((user) => {
            setChatUser(user);
        })
    }, []);

  const messageHeaderStyle : MessageHeaderStyleInterface = {
     backgroundColor: "#c7caed"
  }

  const appBarOptions = () =>{
    return (
      <Image source={Call} style={{ tintColor: '#6851D6', marginRight: 3 }} />
    )
  }

  return (
    <>
        { chatUser && <CometChatMessageHeader
             user={chatUser}
             style={messageHeaderStyle}
             AppBarOptions={appBarOptions}
          />
         }
    </>
  );
}

Example

​Usage

​Integration

​Actions

1. OnBack

​Filters

​Events

​Customization

​Style

1. MessageHeader Style

2. Avatar Style

3. ListItem Style

4. StatusIndicator Style

​Functionality

​Advanced

​SubtitleView

​BackButtonIcon

​AppBarOptions

Usage

Integration

Actions

Filters

Events

Customization

Style

Functionality

Advanced

SubtitleView

BackButtonIcon

AppBarOptions