Files
mattermost/web/react/components/file_upload.jsx
2015-10-15 15:00:28 -04:00

273 lines
9.5 KiB
JavaScript

// Copyright (c) 2015 Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.
var client = require('../utils/client.jsx');
var Constants = require('../utils/constants.jsx');
var ChannelStore = require('../stores/channel_store.jsx');
var utils = require('../utils/utils.jsx');
export default class FileUpload extends React.Component {
constructor(props) {
super(props);
this.uploadFiles = this.uploadFiles.bind(this);
this.handleChange = this.handleChange.bind(this);
this.handleDrop = this.handleDrop.bind(this);
this.state = {
requests: {}
};
}
fileUploadSuccess(channelId, data) {
this.props.onFileUpload(data.filenames, data.client_ids, channelId);
var requests = this.state.requests;
for (var j = 0; j < data.client_ids.length; j++) {
delete requests[data.client_ids[j]];
}
this.setState({requests: requests});
}
fileUploadFail(clientId, err) {
this.props.onUploadError(err, clientId);
}
uploadFiles(files) {
// clear any existing errors
this.props.onUploadError(null);
var channelId = this.props.channelId || ChannelStore.getCurrentId();
var uploadsRemaining = Constants.MAX_UPLOAD_FILES - this.props.getFileCount(channelId);
var numUploads = 0;
// keep track of how many files have been too large
var tooLargeFiles = [];
for (let i = 0; i < files.length && numUploads < uploadsRemaining; i++) {
if (files[i].size > Constants.MAX_FILE_SIZE) {
tooLargeFiles.push(files[i]);
continue;
}
// generate a unique id that can be used by other components to refer back to this upload
let clientId = utils.generateId();
// prepare data to be uploaded
var formData = new FormData();
formData.append('channel_id', channelId);
formData.append('files', files[i], files[i].name);
formData.append('client_ids', clientId);
var request = client.uploadFile(formData,
this.fileUploadSuccess.bind(this, channelId),
this.fileUploadFail.bind(this, clientId)
);
var requests = this.state.requests;
requests[clientId] = request;
this.setState({requests: requests});
this.props.onUploadStart([clientId], channelId);
numUploads += 1;
}
if (files.length > uploadsRemaining) {
this.props.onUploadError(`Uploads limited to ${Constants.MAX_UPLOAD_FILES} files maximum. Please use additional posts for more files.`);
} else if (tooLargeFiles.length > 1) {
var tooLargeFilenames = tooLargeFiles.map((file) => file.name).join(', ');
this.props.onUploadError(`Files above ${Constants.MAX_FILE_SIZE / 1000000}MB could not be uploaded: ${tooLargeFilenames}`);
} else if (tooLargeFiles.length > 0) {
this.props.onUploadError(`File above ${Constants.MAX_FILE_SIZE / 1000000}MB could not be uploaded: ${tooLargeFiles[0].name}`);
}
}
handleChange() {
var element = $(ReactDOM.findDOMNode(this.refs.fileInput));
this.uploadFiles(element.prop('files'));
// clear file input for all modern browsers
try {
element[0].value = '';
if (element.value) {
element[0].type = 'text';
element[0].type = 'file';
}
} catch (e) {
// Do nothing
}
}
handleDrop(e) {
this.props.onUploadError(null);
var files = e.originalEvent.dataTransfer.files;
if (typeof files !== 'string' && files.length) {
this.uploadFiles(files);
} else {
this.props.onTextDrop(e.originalEvent.dataTransfer.getData('Text'));
}
}
componentDidMount() {
var inputDiv = ReactDOM.findDOMNode(this.refs.input);
var self = this;
if (this.props.postType === 'post') {
$('.row.main').dragster({
enter() {
$('.center-file-overlay').removeClass('hidden');
},
leave() {
$('.center-file-overlay').addClass('hidden');
},
drop(dragsterEvent, e) {
$('.center-file-overlay').addClass('hidden');
self.handleDrop(e);
}
});
} else if (this.props.postType === 'comment') {
$('.post-right__container').dragster({
enter() {
$('.right-file-overlay').removeClass('hidden');
},
leave() {
$('.right-file-overlay').addClass('hidden');
},
drop(dragsterEvent, e) {
$('.right-file-overlay').addClass('hidden');
self.handleDrop(e);
}
});
}
document.addEventListener('paste', function handlePaste(e) {
var textarea = $(inputDiv.parentNode.parentNode).find('.custom-textarea')[0];
if (textarea !== e.target && !$.contains(textarea, e.target)) {
return;
}
self.props.onUploadError(null);
// This looks redundant, but must be done this way due to
// setState being an asynchronous call
var items = e.clipboardData.items;
var numItems = 0;
if (items) {
for (let i = 0; i < items.length; i++) {
if (items[i].type.indexOf('image') !== -1) {
var testExt = items[i].type.split('/')[1].toLowerCase();
if (Constants.IMAGE_TYPES.indexOf(testExt) < 0) {
continue;
}
numItems++;
}
}
var numToUpload = Math.min(Constants.MAX_UPLOAD_FILES - self.props.getFileCount(ChannelStore.getCurrentId()), numItems);
if (numItems > numToUpload) {
self.props.onUploadError('Uploads limited to ' + Constants.MAX_UPLOAD_FILES + ' files maximum. Please use additional posts for more files.');
}
for (var i = 0; i < items.length && i < numToUpload; i++) {
if (items[i].type.indexOf('image') !== -1) {
var file = items[i].getAsFile();
var ext = items[i].type.split('/')[1].toLowerCase();
if (Constants.IMAGE_TYPES.indexOf(ext) < 0) {
continue;
}
var channelId = self.props.channelId || ChannelStore.getCurrentId();
// generate a unique id that can be used by other components to refer back to this file upload
var clientId = utils.generateId();
var formData = new FormData();
formData.append('channel_id', channelId);
var d = new Date();
var hour;
if (d.getHours() < 10) {
hour = '0' + d.getHours();
} else {
hour = String(d.getHours());
}
var min;
if (d.getMinutes() < 10) {
min = '0' + d.getMinutes();
} else {
min = String(d.getMinutes());
}
var name = 'Image Pasted at ' + d.getFullYear() + '-' + d.getMonth() + '-' + d.getDate() + ' ' + hour + '-' + min + '.' + ext;
formData.append('files', file, name);
formData.append('client_ids', clientId);
var request = client.uploadFile(formData,
self.fileUploadSuccess.bind(self, channelId),
self.fileUploadFail.bind(self, clientId)
);
var requests = self.state.requests;
requests[clientId] = request;
self.setState({requests: requests});
self.props.onUploadStart([clientId], channelId);
}
}
}
});
}
cancelUpload(clientId) {
var requests = this.state.requests;
var request = requests[clientId];
if (request) {
request.abort();
delete requests[clientId];
this.setState({requests: requests});
}
}
render() {
return (
<span
ref='input'
className='btn btn-file'
>
<span>
<i className='glyphicon glyphicon-paperclip' />
</span>
<input
ref='fileInput'
type='file'
onChange={this.handleChange}
multiple='true'
/>
</span>
);
}
}
FileUpload.propTypes = {
onUploadError: React.PropTypes.func,
getFileCount: React.PropTypes.func,
onFileUpload: React.PropTypes.func,
onUploadStart: React.PropTypes.func,
onTextDrop: React.PropTypes.func,
channelId: React.PropTypes.string,
postType: React.PropTypes.string
};