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// Copyright (c) 2016 Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.
import $ from 'jquery';
import * as syntaxHightlighting from 'utils/syntax_hightlighting.jsx';
import Constants from 'utils/constants.jsx';
import FileInfoPreview from './file_info_preview.jsx';
import React from 'react';
export default class CodePreview extends React.Component {
constructor(props) {
super(props);
this.updateStateFromProps = this.updateStateFromProps.bind(this);
this.handleReceivedError = this.handleReceivedError.bind(this);
this.handleReceivedCode = this.handleReceivedCode.bind(this);
this.state = {
code: '',
lang: '',
loading: true,
success: true
};
}
componentDidMount() {
this.updateStateFromProps(this.props);
}
componentWillReceiveProps(nextProps) {
if (this.props.fileUrl !== nextProps.fileUrl) {
this.updateStateFromProps(nextProps);
}
}
updateStateFromProps(props) {
var usedLanguage = syntaxHightlighting.getLang(props.filename);
if (!usedLanguage || props.fileInfo.size > Constants.CODE_PREVIEW_MAX_FILE_SIZE) {
this.setState({code: '', lang: '', loading: false, success: false});
return;
}
this.setState({code: '', lang: usedLanguage, loading: true});
$.ajax({
async: true,
url: props.fileUrl,
type: 'GET',
error: this.handleReceivedError,
success: this.handleReceivedCode
});
}
handleReceivedCode(data) {
const parsed = syntaxHightlighting.formatCode(this.state.lang, data, this.props.filename);
this.setState({code: parsed, loading: false, success: true});
}
handleReceivedError() {
this.setState({loading: false, success: false});
}
static support(filename) {
return typeof syntaxHightlighting.getLang(filename) !== 'undefined';
}
render() {
if (this.state.loading) {
return (
<div className='view-image__loading'>
<img
className='loader-image'
src='/static/images/load.gif'
/>
</div>
);
}
if (!this.state.success) {
return (
<FileInfoPreview
filename={this.props.filename}
fileUrl={this.props.fileUrl}
fileInfo={this.props.fileInfo}
formatMessage={this.props.formatMessage}
/>
);
}
return <div dangerouslySetInnerHTML={{__html: this.state.code}}/>;
}
}
CodePreview.propTypes = {
filename: React.PropTypes.string.isRequired,
fileUrl: React.PropTypes.string.isRequired,
fileInfo: React.PropTypes.object.isRequired,
formatMessage: React.PropTypes.func.isRequired
};
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