Refactor file upload interface to use jQuery, and to have separate upload progress bars. The progess bars make clear when the data has been sent to the first Tor node, and when its waiting on the rest of the Tor network. It also allows the sender to cancel uploads

This commit is contained in:
Micah Lee 2019-02-15 18:52:28 -08:00
parent 002f91d108
commit 1b68adc6d0
5 changed files with 222 additions and 131 deletions

View File

@ -9,7 +9,7 @@
body {
margin: 0;
font-family: Helvetica;
font-family: Helvetica, sans-serif;
}
header {
@ -103,58 +103,96 @@ table.file-list td:last-child {
}
.upload-wrapper {
display: flex;
align-items: center;
justify-content: center;
min-height: 400px;
}
.upload {
text-align: center;
}
.upload img {
.upload-wrapper img.logo {
width: 120px;
height: 120px;
}
.upload .upload-header {
.upload-wrapper .upload-header {
font-size: 30px;
font-weight: normal;
color: #666666;
margin: 0 0 10px 0;
}
.upload .upload-description {
.upload-wrapper .upload-description {
color: #666666;
margin: 0 0 20px 0;
}
div#uploads {
width: 800px;
max-width: 90%;
margin: 0 auto;
}
div#uploads .upload {
border: 1px solid #DDDDDD;
margin: 20px 0;
padding: 10px;
text-align: left;
}
div#uploads .upload .upload-filename {
font-weight: bold;
font-family: monospace;
font-size: 1.1em;
margin-bottom: 5px;
}
div#uploads .upload .upload-status {
color: #999999;
font-size: 0.9em;
margin-bottom: 5px;
}
div#uploads .upload input.cancel {
color: #f24537;
border: 0;
background: none;
box-shadow: none;
border-radius: 0px;
cursor: pointer;
font-family: sans-serif;
font-size: 12px;
text-decoration: none;
display: inline-block;
float:right;
}
div#uploads .upload progress {
width: 100%;
height: 20px;
}
ul.flashes {
list-style: none;
margin: 0;
padding: 0;
color: #cc0000;
text-align: left;
width: 800px;
max-width: 90%;
margin: 0 auto;
}
ul.flashes li {
margin: 0 0 5px 0;
padding: 10px;
padding: 5px;
list-style: none;
border: 0;
border-radius: 3px;
text-align: left;
}
li.error {
color: #ffffff;
background-color: #c90c0c;
color: #dd4040;
}
li.info {
color: #000000;
background-color: #a9e26c;
color: #3e933f;
}
.closed-wrapper {

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@ -0,0 +1,2 @@
// Hide the noscript div, because our javascript is executing
document.getElementById('noscript').style.display = 'none';

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@ -1,54 +1,110 @@
// Hide the noscript div, because our javascript is executing
document.getElementById('noscript').style.display = 'none';
$(function(){
// Add a flash message
var flash = function(category, message) {
$('#flashes').append($('<li>').addClass(category).text(message));
};
var form = document.getElementById('send');
var fileSelect = document.getElementById('file-select');
var uploadButton = document.getElementById('send-button');
var flashes = document.getElementById('flashes');
// Add an upload
var new_upload_div = function(xhr, filenames) {
/*
The DOM for an upload looks something like this:
// Add a flash message
function flash(category, message) {
var el = document.createElement('li');
el.innerText = message;
el.className = category;
flashes.appendChild(el);
}
<div class="upload">
<div class="upload-meta">
<input class="cancel" type="button" value="Cancel" />
<div class="upload-filename">educational-video.mp4, secret-plans.pdf</div>
<div class="upload-status">Sending to first Tor node ...</div>
</div>
<progress value="25" max="100"></progress>
</div>
*/
var $progress = $('<progress>').attr({ value: '0', max: 100 });
var $cancel_button = $('<input>').addClass('cancel').attr({ type: 'button', value: 'Cancel' });
var $upload_filename = $('<div>').addClass('upload-filename').text(filenames.join(', '));
var $upload_status = $('<div>').addClass('upload-status').text('Sending data to initial Tor node ...');
form.onsubmit = function(event) {
var $upload_div = $('<div>').addClass('upload')
.append(
$('<div>').addClass('upload-meta')
.append($cancel_button)
.append($upload_filename)
.append($upload_status)
)
.append($progress);
$cancel_button.click(function(){
// Abort the upload, and remove the upload div
xhr.abort();
$upload_div.remove()
});
return $upload_div;
};
// Intercept submitting the form
$('#send').submit(function(event){
event.preventDefault();
// Disable button, and update text
uploadButton.innerHTML = 'Uploading ...';
uploadButton.disabled = true;
fileSelect.disabled = true;
// Create form data
var files = fileSelect.files;
// Create form data, and list of filenames
var files = $('#file-select').get(0).files;
var filenames = [];
var formData = new FormData();
for (var i = 0; i < files.length; i++) {
for(var i = 0; i < files.length; i++) {
var file = files[i];
filenames.push(file.name);
formData.append('file[]', file, file.name);
}
// Set up the request
var ajax = new XMLHttpRequest();
// Reset the upload form
$('#send').get(0).reset();
ajax.upload.addEventListener('progress', function(event){
console.log('upload progress', 'uploaded '+event.loaded+' bytes / '+event.total+' bytes');
var percent = parseInt((event.loaded / event.total) * 100, 10);
uploadButton.innerHTML = 'Uploading '+percent+'%';
// Start upload
xhr = $.ajax({
method: 'POST',
url: window.location.pathname + '/upload-ajax',
data: formData,
// Tell jQuery not to process data or worry about content-type
cache: false,
contentType: false,
processData: false,
// Custom XMLHttpRequest
xhr: function() {
var xhr = $.ajaxSettings.xhr();
if(xhr.upload) {
xhr.upload.addEventListener('progress', function(event) {
// Update progress bar for this specific upload
if(event.lengthComputable) {
console.log('upload progress', ''+event.loaded+' bytes / '+event.total+' bytes');
$('progress', this.$upload_div).attr({
value: event.loaded,
max: event.total,
});
}
// If it's finished sending all data to the first Tor node, remove cancel button
// and update the status
if(event.loaded == event.total) {
console.log('upload progress', 'complete');
$('.cancel', this.$upload_div).remove();
$('.upload-status', this.$upload_div).html('<img src="/static/img/ajax.gif" alt="" /> Waiting for data to finish traversing Tor network ...');
}
}, false);
}
return xhr;
},
success: function(data, textStatus, xhr){
console.log('upload finished', data);
// Remove the upload div
xhr.$upload_div.remove();
ajax.addEventListener('load', function(event){
console.log('upload finished', ajax.response);
if(ajax.status == 200) {
// Parse response
try {
var response = JSON.parse(ajax.response);
var response = JSON.parse(data);
// The 'new_body' response replaces the whole HTML document and ends
if('new_body' in response) {
document.body.innerHTML = response['new_body'];
$('body').html(response['new_body']);
return;
}
@ -66,29 +122,19 @@ form.onsubmit = function(event) {
}
}
} catch(e) {
console.log('invalid response', ajax.response);
flash('error', 'Invalid response from server: '+ajax.response);
console.log('invalid response');
flash('error', 'Invalid response from server: '+data);
}
// Re-enable button, and update text
uploadButton.innerHTML = 'Send Files';
uploadButton.disabled = false;
fileSelect.disabled = false;
},
error: function(xhr, textStatus, errorThrown){
console.log('error', errorThrown);
flash('error', 'Error uploading: ' + errorThrown);
}
}, false);
});
console.log('upload started', filenames);
ajax.addEventListener('error', function(event){
console.log('error', event);
flash('error', 'Error uploading');
}, false);
ajax.addEventListener('abort', function(event){
console.log('abort', event);
flash('error', 'Upload aborted');
}, false);
// Send the request
ajax.open('POST', window.location.pathname + '/upload-ajax', true);
ajax.send(formData);
console.log('upload started');
}
// Make the upload div
xhr.$upload_div = new_upload_div(xhr, filenames);
$('#uploads').append(xhr.$upload_div);
});
});

View File

@ -13,13 +13,18 @@
</header>
<div class="upload-wrapper">
<div class="upload">
<p><img class="logo" src="/static/img/logo_large.png" title="OnionShare"></p>
<p class="upload-header">Send Files</p>
<p class="upload-description">Select the files you want to send, then click "Send Files"...</p>
<form id="send" method="post" enctype="multipart/form-data" action="{{ upload_action }}">
<p><input type="file" id="file-select" name="file[]" multiple /></p>
<p><button type="submit" id="send-button" class="button">Send Files</button></p>
</form>
<div id="uploads"></div>
<div>
<ul id="flashes" class="flashes">
{% with messages = get_flashed_messages(with_categories=true) %}
@ -31,7 +36,6 @@
{% endwith %}
</ul>
</div>
</form>
<!--
We are not using a <noscript> tag because it only works when the security slider is set to
@ -45,9 +49,10 @@
to Standard or
<a target="_blank" href="/noscript-xss-instructions">turn off your Tor Browser's NoScript XSS setting</a>.</p>
</div>
<script src="/static/js/receive-noscript.js"></script>
</div>
</div>
<script src="/static/js/jquery-3.3.1.min.js"></script>
<script src="/static/js/receive.js"></script>
</body>
</html>