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React image fallback - in case src fails try to load a placeholder instead
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import React from "react"; | |
import PropTypes from "prop-types"; | |
class Image extends React.Component { | |
constructor(props) { | |
super(props); | |
this.state = { src: props.src }; | |
} | |
componentWillReceiveProps(nextProps) { | |
if (this.props.src !== nextProps.src) { | |
this.setState({ | |
src: props.src | |
}); | |
} | |
} | |
handleImageLoad() { | |
console.log("image loaded", this.state.src); | |
} | |
handleImageError() { | |
console.log("image failed loaded", this.state.src); | |
if (this.props.placeholder) { | |
console.log("try load placeholder"); | |
this.setState({ src: this.props.placeholder }); | |
} | |
} | |
handleOnContextMenu(e) { | |
console.log("handleOnContextMenu"); | |
if (this.props.disableContextMenu) { | |
e.preventDefault(); | |
} | |
} | |
render() { | |
const { src, placeholder, disableContextMenu, ...other } = this.props; // es7 | |
return ( | |
<img | |
src={this.state.src} | |
onLoad={this.handleImageLoad.bind(this)} | |
onError={this.handleImageError.bind(this)} | |
{...other} | |
onContextMenu={this.handleOnContextMenu.bind(this)} | |
/> | |
); | |
} | |
} | |
Image.defaultProps = { | |
src: "", | |
placeholder: "", | |
disableContextMenu: false | |
}; | |
Image.propTypes = { | |
src: PropTypes.string.isRequired, | |
placeholder: PropTypes.string, | |
disableContextMenu: PropTypes.bool | |
}; | |
export default Image; |
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