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Diffstat (limited to 'web/react/components/post_image.jsx')
-rw-r--r-- | web/react/components/post_image.jsx | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/web/react/components/post_image.jsx b/web/react/components/post_image.jsx new file mode 100644 index 000000000..da4a25794 --- /dev/null +++ b/web/react/components/post_image.jsx @@ -0,0 +1,81 @@ +// Copyright (c) 2015 Mattermost, Inc. All Rights Reserved. +// See License.txt for license information. + +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 +}; |