outline/app/components/Avatar/Avatar.tsx

import { observable } from "mobx";
import { observer } from "mobx-react";
import * as React from "react";
import styled from "styled-components";
import User from "~/models/User";
import placeholder from "./placeholder.png";

type Props = {
  src: string;
  size: number;
  icon?: React.ReactNode;
  user?: User;
  alt?: string;
  onClick?: () => void;
  className?: string;
};

@observer
class Avatar extends React.Component<Props> {
  @observable
  error: boolean;

  static defaultProps = {
    size: 24,
  };

  handleError = () => {
    this.error = true;
  };

  render() {
    const { src, icon, ...rest } = this.props;
    return (
      <AvatarWrapper>
        <CircleImg
          onError={this.handleError}
          src={this.error ? placeholder : src}
          {...rest}
        />
        {icon && <IconWrapper>{icon}</IconWrapper>}
      </AvatarWrapper>
    );
  }
}

const AvatarWrapper = styled.div`
  position: relative;
`;

const IconWrapper = styled.div`
  display: flex;
  position: absolute;
  bottom: -2px;
  right: -2px;
  background: ${(props) => props.theme.primary};
  border: 2px solid ${(props) => props.theme.background};
  border-radius: 100%;
  width: 20px;
  height: 20px;
`;

const CircleImg = styled.img<{ size: number }>`
  display: block;
  width: ${(props) => props.size}px;
  height: ${(props) => props.size}px;
  border-radius: 50%;
  border: 2px solid ${(props) => props.theme.background};
  flex-shrink: 0;
`;

export default Avatar;