onSubmitText method
Implementation
void onSubmitText(String message) {
final isEnable = vConfig.enableEndToEndMessageEncryption;
final localMsg = VTextMessage.buildMessage(
content: isEnable ? VMessageEncryption.encryptMessage(message) : message,
isEncrypted: isEnable,
roomId: vRoom.id,
);
scrollDown();
_onSubmitSendMessage(localMsg);
}