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// Copyright (c) 2015 Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.
import React from 'react';
export default class PostImageEmbed extends React.Component {
constructor(props) {
super(props);
this.handleLoadComplete = this.handleLoadComplete.bind(this);
this.handleLoadError = this.handleLoadError.bind(this);
this.state = {
loaded: false,
errored: false
};
}
componentWillMount() {
this.loadImg(this.props.link);
}
componentWillReceiveProps(nextProps) {
if (nextProps.link !== this.props.link) {
this.setState({
loaded: false,
errored: false
});
}
}
componentDidUpdate(prevProps) {
if (!this.state.loaded && prevProps.link !== this.props.link) {
this.loadImg(this.props.link);
}
}
loadImg(src) {
const img = new Image();
img.onload = this.handleLoadComplete;
img.onerror = this.handleLoadError;
img.src = src;
}
handleLoadComplete() {
this.setState({
loaded: true
});
}
handleLoadError() {
this.setState({
errored: true,
loaded: true
});
}
render() {
if (this.state.errored) {
return null;
}
if (!this.state.loaded) {
return (
<img
className='img-div placeholder'
height='500px'
/>
);
}
return (
<img
className='img-div'
src={this.props.link}
/>
);
}
}
PostImageEmbed.propTypes = {
link: React.PropTypes.string.isRequired
};
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