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// Copyright (c) 2015 Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.
import $ from 'jquery';
import ReactDOM from 'react-dom';
import * as utils from 'utils/utils.jsx';
import Client from 'utils/web_client.jsx';
import Constants from 'utils/constants.jsx';
import {intlShape, injectIntl, defineMessages} from 'react-intl';
const holders = defineMessages({
download: {
id: 'file_attachment.download',
defaultMessage: 'Download'
}
});
import React from 'react';
class FileAttachment extends React.Component {
constructor(props) {
super(props);
this.loadFiles = this.loadFiles.bind(this);
this.addBackgroundImage = this.addBackgroundImage.bind(this);
this.canSetState = false;
this.state = {fileSize: -1};
}
componentDidMount() {
this.loadFiles();
}
componentDidUpdate(prevProps) {
if (this.props.filename !== prevProps.filename) {
this.loadFiles();
}
}
loadFiles() {
this.canSetState = true;
var filename = this.props.filename;
if (filename) {
var fileInfo = this.getFileInfoFromName(filename);
var type = utils.getFileType(fileInfo.ext);
if (type === 'image') {
var self = this; // Need this reference since we use the given "this"
$('<img/>').attr('src', fileInfo.path + '_thumb.jpg').load(function loadWrapper(path, name) {
return function loader() {
$(this).remove();
if (name in self.refs) {
var imgDiv = ReactDOM.findDOMNode(self.refs[name]);
$(imgDiv).removeClass('post-image__load');
$(imgDiv).addClass('post-image');
var width = this.width || $(this).width();
var height = this.height || $(this).height();
if (width < Constants.THUMBNAIL_WIDTH &&
height < Constants.THUMBNAIL_HEIGHT) {
$(imgDiv).addClass('small');
} else {
$(imgDiv).addClass('normal');
}
self.addBackgroundImage(name, path);
}
};
}(fileInfo.path, filename));
}
}
}
componentWillUnmount() {
// keep track of when this component is mounted so that we can asynchronously change state without worrying about whether or not we're mounted
this.canSetState = false;
}
shouldComponentUpdate(nextProps, nextState) {
if (!utils.areObjectsEqual(nextProps, this.props)) {
return true;
}
// the only time this object should update is when it receives an updated file size which we can usually handle without re-rendering
if (nextState.fileSize !== this.state.fileSize) {
if (this.refs.fileSize) {
// update the UI element to display the file size without re-rendering the whole component
ReactDOM.findDOMNode(this.refs.fileSize).innerHTML = utils.fileSizeToString(nextState.fileSize);
return false;
}
// we can't find the element that should hold the file size so we must not have rendered yet
return true;
}
return true;
}
getFileInfoFromName(name) {
var fileInfo = utils.splitFileLocation(name);
fileInfo.path = utils.getWindowLocationOrigin() + Client.getFilesRoute() + '/get' + fileInfo.path;
return fileInfo;
}
addBackgroundImage(name, path) {
var fileUrl = path;
if (name in this.refs) {
if (!path) {
fileUrl = this.getFileInfoFromName(name).path;
}
var imgDiv = ReactDOM.findDOMNode(this.refs[name]);
var re1 = new RegExp(' ', 'g');
var re2 = new RegExp('\\(', 'g');
var re3 = new RegExp('\\)', 'g');
var url = fileUrl.replace(re1, '%20').replace(re2, '%28').replace(re3, '%29');
$(imgDiv).css('background-image', 'url(' + url + '_thumb.jpg)');
}
}
removeBackgroundImage(name) {
if (name in this.refs) {
$(ReactDOM.findDOMNode(this.refs[name])).css('background-image', 'initial');
}
}
render() {
var filename = this.props.filename;
var fileInfo = utils.splitFileLocation(filename);
var fileUrl = utils.getFileUrl(filename);
var type = utils.getFileType(fileInfo.ext);
var thumbnail;
if (type === 'image') {
thumbnail = (
<div
ref={filename}
className='post-image__load'
/>
);
} else {
thumbnail = <div className={'file-icon ' + utils.getIconClassName(type)}/>;
}
var fileSizeString = '';
if (this.state.fileSize < 0) {
Client.getFileInfo(
filename,
function success(data) {
if (this.canSetState) {
this.setState({fileSize: parseInt(data.size, 10)});
}
}.bind(this),
function error() {
// Do nothing
}
);
} else {
fileSizeString = utils.fileSizeToString(this.state.fileSize);
}
var filenameString = decodeURIComponent(utils.getFileName(filename));
var trimmedFilename;
if (filenameString.length > 35) {
trimmedFilename = filenameString.substring(0, Math.min(35, filenameString.length)) + '...';
} else {
trimmedFilename = filenameString;
}
return (
<div
className='post-image__column'
key={filename}
>
<a className='post-image__thumbnail'
href='#'
onClick={() => this.props.handleImageClick(this.props.index)}
>
{thumbnail}
</a>
<div className='post-image__details'>
<a
href={fileUrl}
download={filenameString}
data-toggle='tooltip'
title={this.props.intl.formatMessage(holders.download) + ' \"' + filenameString + '\"'}
className='post-image__name'
target='_blank'
>
{trimmedFilename}
</a>
<div>
<a
href={fileUrl}
download={filenameString}
className='post-image__download'
target='_blank'
>
<span
className='fa fa-download'
/>
</a>
<span className='post-image__type'>{fileInfo.ext.toUpperCase()}</span>
<span className='post-image__size'>{fileSizeString}</span>
</div>
</div>
</div>
);
}
}
FileAttachment.propTypes = {
intl: intlShape.isRequired,
// a list of file pathes displayed by the parent FileAttachmentList
filename: React.PropTypes.string.isRequired,
// the index of this attachment preview in the parent FileAttachmentList
index: React.PropTypes.number.isRequired,
// handler for when the thumbnail is clicked passed the index above
handleImageClick: React.PropTypes.func
};
export default injectIntl(FileAttachment);
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