mirror of
https://github.com/discourse/discourse.git
synced 2024-11-24 05:34:28 +08:00
807 lines
27 KiB
JavaScript
807 lines
27 KiB
JavaScript
/*
|
|
* MIT Licensed
|
|
* http://www.23developer.com/opensource
|
|
* http://github.com/23/resumable.js
|
|
* Steffen Tiedemann Christensen, steffen@23company.com
|
|
*/
|
|
|
|
(function(){
|
|
"use strict";
|
|
|
|
var Resumable = function(opts){
|
|
if ( !(this instanceof Resumable) ) {
|
|
return new Resumable(opts);
|
|
}
|
|
this.version = 1.0;
|
|
// SUPPORTED BY BROWSER?
|
|
// Check if these features are support by the browser:
|
|
// - File object type
|
|
// - Blob object type
|
|
// - FileList object type
|
|
// - slicing files
|
|
this.support = (
|
|
(typeof(File)!=='undefined')
|
|
&&
|
|
(typeof(Blob)!=='undefined')
|
|
&&
|
|
(typeof(FileList)!=='undefined')
|
|
&&
|
|
(!!Blob.prototype.webkitSlice||!!Blob.prototype.mozSlice||!!Blob.prototype.slice||false)
|
|
);
|
|
if(!this.support) return(false);
|
|
|
|
|
|
// PROPERTIES
|
|
var $ = this;
|
|
$.files = [];
|
|
$.defaults = {
|
|
chunkSize:1*1024*1024,
|
|
forceChunkSize:false,
|
|
simultaneousUploads:3,
|
|
fileParameterName:'file',
|
|
throttleProgressCallbacks:0.5,
|
|
query:{},
|
|
headers:{},
|
|
preprocess:null,
|
|
method:'multipart',
|
|
prioritizeFirstAndLastChunk:false,
|
|
target:'/',
|
|
testChunks:true,
|
|
generateUniqueIdentifier:null,
|
|
maxChunkRetries:undefined,
|
|
chunkRetryInterval:undefined,
|
|
permanentErrors:[404, 415, 500, 501],
|
|
maxFiles:undefined,
|
|
withCredentials:false,
|
|
xhrTimeout:0,
|
|
maxFilesErrorCallback:function (files, errorCount) {
|
|
var maxFiles = $.getOpt('maxFiles');
|
|
alert('Please upload ' + maxFiles + ' file' + (maxFiles === 1 ? '' : 's') + ' at a time.');
|
|
},
|
|
minFileSize:1,
|
|
minFileSizeErrorCallback:function(file, errorCount) {
|
|
alert(file.fileName||file.name +' is too small, please upload files larger than ' + $h.formatSize($.getOpt('minFileSize')) + '.');
|
|
},
|
|
maxFileSize:undefined,
|
|
maxFileSizeErrorCallback:function(file, errorCount) {
|
|
alert(file.fileName||file.name +' is too large, please upload files less than ' + $h.formatSize($.getOpt('maxFileSize')) + '.');
|
|
},
|
|
fileType: [],
|
|
fileTypeErrorCallback: function(file, errorCount) {
|
|
alert(file.fileName||file.name +' has type not allowed, please upload files of type ' + $.getOpt('fileType') + '.');
|
|
}
|
|
};
|
|
$.opts = opts||{};
|
|
$.getOpt = function(o) {
|
|
var $opt = this;
|
|
// Get multiple option if passed an array
|
|
if(o instanceof Array) {
|
|
var options = {};
|
|
$h.each(o, function(option){
|
|
options[option] = $opt.getOpt(option);
|
|
});
|
|
return options;
|
|
}
|
|
// Otherwise, just return a simple option
|
|
if ($opt instanceof ResumableChunk) {
|
|
if (typeof $opt.opts[o] !== 'undefined') { return $opt.opts[o]; }
|
|
else { $opt = $opt.fileObj; }
|
|
}
|
|
if ($opt instanceof ResumableFile) {
|
|
if (typeof $opt.opts[o] !== 'undefined') { return $opt.opts[o]; }
|
|
else { $opt = $opt.resumableObj; }
|
|
}
|
|
if ($opt instanceof Resumable) {
|
|
if (typeof $opt.opts[o] !== 'undefined') { return $opt.opts[o]; }
|
|
else { return $opt.defaults[o]; }
|
|
}
|
|
};
|
|
|
|
// EVENTS
|
|
// catchAll(event, ...)
|
|
// fileSuccess(file), fileProgress(file), fileAdded(file, event), fileRetry(file), fileError(file, message),
|
|
// complete(), progress(), error(message, file), pause()
|
|
$.events = [];
|
|
$.on = function(event,callback){
|
|
$.events.push(event.toLowerCase(), callback);
|
|
};
|
|
$.fire = function(){
|
|
// `arguments` is an object, not array, in FF, so:
|
|
var args = [];
|
|
for (var i=0; i<arguments.length; i++) args.push(arguments[i]);
|
|
// Find event listeners, and support pseudo-event `catchAll`
|
|
var event = args[0].toLowerCase();
|
|
for (var i=0; i<=$.events.length; i+=2) {
|
|
if($.events[i]==event) $.events[i+1].apply($,args.slice(1));
|
|
if($.events[i]=='catchall') $.events[i+1].apply(null,args);
|
|
}
|
|
if(event=='fileerror') $.fire('error', args[2], args[1]);
|
|
if(event=='fileprogress') $.fire('progress');
|
|
};
|
|
|
|
|
|
// INTERNAL HELPER METHODS (handy, but ultimately not part of uploading)
|
|
var $h = {
|
|
stopEvent: function(e){
|
|
e.stopPropagation();
|
|
e.preventDefault();
|
|
},
|
|
each: function(o,callback){
|
|
if(typeof(o.length)!=='undefined') {
|
|
for (var i=0; i<o.length; i++) {
|
|
// Array or FileList
|
|
if(callback(o[i])===false) return;
|
|
}
|
|
} else {
|
|
for (i in o) {
|
|
// Object
|
|
if(callback(i,o[i])===false) return;
|
|
}
|
|
}
|
|
},
|
|
generateUniqueIdentifier:function(file){
|
|
var custom = $.getOpt('generateUniqueIdentifier');
|
|
if(typeof custom === 'function') {
|
|
return custom(file);
|
|
}
|
|
var relativePath = file.webkitRelativePath||file.fileName||file.name; // Some confusion in different versions of Firefox
|
|
var size = file.size;
|
|
return(size + '-' + relativePath.replace(/[^0-9a-zA-Z_-]/img, ''));
|
|
},
|
|
contains:function(array,test) {
|
|
var result = false;
|
|
|
|
$h.each(array, function(value) {
|
|
if (value == test) {
|
|
result = true;
|
|
return false;
|
|
}
|
|
return true;
|
|
});
|
|
|
|
return result;
|
|
},
|
|
formatSize:function(size){
|
|
if(size<1024) {
|
|
return size + ' bytes';
|
|
} else if(size<1024*1024) {
|
|
return (size/1024.0).toFixed(0) + ' KB';
|
|
} else if(size<1024*1024*1024) {
|
|
return (size/1024.0/1024.0).toFixed(1) + ' MB';
|
|
} else {
|
|
return (size/1024.0/1024.0/1024.0).toFixed(1) + ' GB';
|
|
}
|
|
},
|
|
getTarget:function(params){
|
|
var target = $.getOpt('target');
|
|
if(target.indexOf('?') < 0) {
|
|
target += '?';
|
|
} else {
|
|
target += '&';
|
|
}
|
|
return target + params.join('&');
|
|
}
|
|
};
|
|
|
|
var onDrop = function(event){
|
|
$h.stopEvent(event);
|
|
appendFilesFromFileList(event.dataTransfer.files, event);
|
|
};
|
|
var onDragOver = function(e) {
|
|
e.preventDefault();
|
|
};
|
|
|
|
// INTERNAL METHODS (both handy and responsible for the heavy load)
|
|
var appendFilesFromFileList = function(fileList, event){
|
|
// check for uploading too many files
|
|
var errorCount = 0;
|
|
var o = $.getOpt(['maxFiles', 'minFileSize', 'maxFileSize', 'maxFilesErrorCallback', 'minFileSizeErrorCallback', 'maxFileSizeErrorCallback', 'fileType', 'fileTypeErrorCallback']);
|
|
if (typeof(o.maxFiles)!=='undefined' && o.maxFiles<(fileList.length+$.files.length)) {
|
|
// if single-file upload, file is already added, and trying to add 1 new file, simply replace the already-added file
|
|
if (o.maxFiles===1 && $.files.length===1 && fileList.length===1) {
|
|
$.removeFile($.files[0]);
|
|
} else {
|
|
o.maxFilesErrorCallback(fileList, errorCount++);
|
|
return false;
|
|
}
|
|
}
|
|
var files = [];
|
|
$h.each(fileList, function(file){
|
|
var fileName = file.name.split('.');
|
|
var fileType = fileName[fileName.length-1].toLowerCase();
|
|
|
|
if (o.fileType.length > 0 && !$h.contains(o.fileType, fileType)) {
|
|
o.fileTypeErrorCallback(file, errorCount++);
|
|
return false;
|
|
}
|
|
|
|
if (typeof(o.minFileSize)!=='undefined' && file.size<o.minFileSize) {
|
|
o.minFileSizeErrorCallback(file, errorCount++);
|
|
return false;
|
|
}
|
|
if (typeof(o.maxFileSize)!=='undefined' && file.size>o.maxFileSize) {
|
|
o.maxFileSizeErrorCallback(file, errorCount++);
|
|
return false;
|
|
}
|
|
|
|
// directories have size == 0
|
|
if (!$.getFromUniqueIdentifier($h.generateUniqueIdentifier(file))) {(function(){
|
|
var f = new ResumableFile($, file);
|
|
window.setTimeout(function(){
|
|
$.files.push(f);
|
|
files.push(f);
|
|
$.fire('fileAdded', f, event)
|
|
},0);
|
|
})()};
|
|
});
|
|
window.setTimeout(function(){
|
|
$.fire('filesAdded', files)
|
|
},0);
|
|
};
|
|
|
|
// INTERNAL OBJECT TYPES
|
|
function ResumableFile(resumableObj, file){
|
|
var $ = this;
|
|
$.opts = {};
|
|
$.getOpt = resumableObj.getOpt;
|
|
$._prevProgress = 0;
|
|
$.resumableObj = resumableObj;
|
|
$.file = file;
|
|
$.fileName = file.fileName||file.name; // Some confusion in different versions of Firefox
|
|
$.size = file.size;
|
|
$.relativePath = file.webkitRelativePath || $.fileName;
|
|
$.uniqueIdentifier = $h.generateUniqueIdentifier(file);
|
|
$._pause = false;
|
|
var _error = false;
|
|
|
|
// Callback when something happens within the chunk
|
|
var chunkEvent = function(event, message){
|
|
// event can be 'progress', 'success', 'error' or 'retry'
|
|
switch(event){
|
|
case 'progress':
|
|
$.resumableObj.fire('fileProgress', $);
|
|
break;
|
|
case 'error':
|
|
$.abort();
|
|
_error = true;
|
|
$.chunks = [];
|
|
$.resumableObj.fire('fileError', $, message);
|
|
break;
|
|
case 'success':
|
|
if(_error) return;
|
|
$.resumableObj.fire('fileProgress', $); // it's at least progress
|
|
if($.isComplete()) {
|
|
$.resumableObj.fire('fileSuccess', $, message);
|
|
}
|
|
break;
|
|
case 'retry':
|
|
$.resumableObj.fire('fileRetry', $);
|
|
break;
|
|
}
|
|
};
|
|
|
|
// Main code to set up a file object with chunks,
|
|
// packaged to be able to handle retries if needed.
|
|
$.chunks = [];
|
|
$.abort = function(){
|
|
// Stop current uploads
|
|
var abortCount = 0;
|
|
$h.each($.chunks, function(c){
|
|
if(c.status()=='uploading') {
|
|
c.abort();
|
|
abortCount++;
|
|
}
|
|
});
|
|
if(abortCount>0) $.resumableObj.fire('fileProgress', $);
|
|
}
|
|
$.cancel = function(){
|
|
// Reset this file to be void
|
|
var _chunks = $.chunks;
|
|
$.chunks = [];
|
|
// Stop current uploads
|
|
$h.each(_chunks, function(c){
|
|
if(c.status()=='uploading') {
|
|
c.abort();
|
|
$.resumableObj.uploadNextChunk();
|
|
}
|
|
});
|
|
$.resumableObj.removeFile($);
|
|
$.resumableObj.fire('fileProgress', $);
|
|
};
|
|
$.retry = function(){
|
|
$.bootstrap();
|
|
$.resumableObj.upload();
|
|
};
|
|
$.bootstrap = function(){
|
|
$.abort();
|
|
_error = false;
|
|
// Rebuild stack of chunks from file
|
|
$.chunks = [];
|
|
$._prevProgress = 0;
|
|
var round = $.getOpt('forceChunkSize') ? Math.ceil : Math.floor;
|
|
var maxOffset = Math.max(round($.file.size/$.getOpt('chunkSize')),1);
|
|
for (var offset=0; offset<maxOffset; offset++) {(function(offset){
|
|
window.setTimeout(function(){
|
|
$.chunks.push(new ResumableChunk($.resumableObj, $, offset, chunkEvent));
|
|
$.resumableObj.fire('chunkingProgress',$,offset/maxOffset);
|
|
},0);
|
|
})(offset)}
|
|
window.setTimeout(function(){
|
|
$.resumableObj.fire('chunkingComplete',$);
|
|
},0);
|
|
};
|
|
$.progress = function(){
|
|
if(_error) return(1);
|
|
// Sum up progress across everything
|
|
var ret = 0;
|
|
var error = false;
|
|
$h.each($.chunks, function(c){
|
|
if(c.status()=='error') error = true;
|
|
ret += c.progress(true); // get chunk progress relative to entire file
|
|
});
|
|
ret = (error ? 1 : (ret>0.999 ? 1 : ret));
|
|
ret = Math.max($._prevProgress, ret); // We don't want to lose percentages when an upload is paused
|
|
$._prevProgress = ret;
|
|
return(ret);
|
|
};
|
|
$.isUploading = function(){
|
|
var uploading = false;
|
|
$h.each($.chunks, function(chunk){
|
|
if(chunk.status()=='uploading') {
|
|
uploading = true;
|
|
return(false);
|
|
}
|
|
});
|
|
return(uploading);
|
|
};
|
|
$.isComplete = function(){
|
|
var outstanding = false;
|
|
$h.each($.chunks, function(chunk){
|
|
var status = chunk.status();
|
|
if(status=='pending' || status=='uploading' || chunk.preprocessState === 1) {
|
|
outstanding = true;
|
|
return(false);
|
|
}
|
|
});
|
|
return(!outstanding);
|
|
};
|
|
$.pause = function(pause){
|
|
if(typeof(pause)==='undefined'){
|
|
$._pause = ($._pause ? false : true);
|
|
}else{
|
|
$._pause = pause;
|
|
}
|
|
};
|
|
$.isPaused = function() {
|
|
return $._pause;
|
|
};
|
|
|
|
|
|
// Bootstrap and return
|
|
$.resumableObj.fire('chunkingStart', $);
|
|
$.bootstrap();
|
|
return(this);
|
|
}
|
|
|
|
function ResumableChunk(resumableObj, fileObj, offset, callback){
|
|
var $ = this;
|
|
$.opts = {};
|
|
$.getOpt = resumableObj.getOpt;
|
|
$.resumableObj = resumableObj;
|
|
$.fileObj = fileObj;
|
|
$.fileObjSize = fileObj.size;
|
|
$.fileObjType = fileObj.file.type;
|
|
$.offset = offset;
|
|
$.callback = callback;
|
|
$.lastProgressCallback = (new Date);
|
|
$.tested = false;
|
|
$.retries = 0;
|
|
$.pendingRetry = false;
|
|
$.preprocessState = 0; // 0 = unprocessed, 1 = processing, 2 = finished
|
|
|
|
// Computed properties
|
|
var chunkSize = $.getOpt('chunkSize');
|
|
$.loaded = 0;
|
|
$.startByte = $.offset*chunkSize;
|
|
$.endByte = Math.min($.fileObjSize, ($.offset+1)*chunkSize);
|
|
if ($.fileObjSize-$.endByte < chunkSize && !$.getOpt('forceChunkSize')) {
|
|
// The last chunk will be bigger than the chunk size, but less than 2*chunkSize
|
|
$.endByte = $.fileObjSize;
|
|
}
|
|
$.xhr = null;
|
|
|
|
// test() makes a GET request without any data to see if the chunk has already been uploaded in a previous session
|
|
$.test = function(){
|
|
// Set up request and listen for event
|
|
$.xhr = new XMLHttpRequest();
|
|
|
|
var testHandler = function(e){
|
|
$.tested = true;
|
|
var status = $.status();
|
|
if(status=='success') {
|
|
$.callback(status, $.message());
|
|
$.resumableObj.uploadNextChunk();
|
|
} else {
|
|
$.send();
|
|
}
|
|
};
|
|
$.xhr.addEventListener('load', testHandler, false);
|
|
$.xhr.addEventListener('error', testHandler, false);
|
|
|
|
// Add data from the query options
|
|
var params = [];
|
|
var customQuery = $.getOpt('query');
|
|
if(typeof customQuery == 'function') customQuery = customQuery($.fileObj, $);
|
|
$h.each(customQuery, function(k,v){
|
|
params.push([encodeURIComponent(k), encodeURIComponent(v)].join('='));
|
|
});
|
|
// Add extra data to identify chunk
|
|
params.push(['resumableChunkNumber', encodeURIComponent($.offset+1)].join('='));
|
|
params.push(['resumableChunkSize', encodeURIComponent($.getOpt('chunkSize'))].join('='));
|
|
params.push(['resumableCurrentChunkSize', encodeURIComponent($.endByte - $.startByte)].join('='));
|
|
params.push(['resumableTotalSize', encodeURIComponent($.fileObjSize)].join('='));
|
|
params.push(['resumableType', encodeURIComponent($.fileObjType)].join('='));
|
|
params.push(['resumableIdentifier', encodeURIComponent($.fileObj.uniqueIdentifier)].join('='));
|
|
params.push(['resumableFilename', encodeURIComponent($.fileObj.fileName)].join('='));
|
|
params.push(['resumableRelativePath', encodeURIComponent($.fileObj.relativePath)].join('='));
|
|
// Append the relevant chunk and send it
|
|
$.xhr.open('GET', $h.getTarget(params));
|
|
$.xhr.timeout = $.getOpt('xhrTimeout');
|
|
$.xhr.withCredentials = $.getOpt('withCredentials');
|
|
// Add data from header options
|
|
$h.each($.getOpt('headers'), function(k,v) {
|
|
$.xhr.setRequestHeader(k, v);
|
|
});
|
|
$.xhr.send(null);
|
|
};
|
|
|
|
$.preprocessFinished = function(){
|
|
$.preprocessState = 2;
|
|
$.send();
|
|
};
|
|
|
|
// send() uploads the actual data in a POST call
|
|
$.send = function(){
|
|
var preprocess = $.getOpt('preprocess');
|
|
if(typeof preprocess === 'function') {
|
|
switch($.preprocessState) {
|
|
case 0: preprocess($); $.preprocessState = 1; return;
|
|
case 1: return;
|
|
case 2: break;
|
|
}
|
|
}
|
|
if($.getOpt('testChunks') && !$.tested) {
|
|
$.test();
|
|
return;
|
|
}
|
|
|
|
// Set up request and listen for event
|
|
$.xhr = new XMLHttpRequest();
|
|
|
|
// Progress
|
|
$.xhr.upload.addEventListener('progress', function(e){
|
|
if( (new Date) - $.lastProgressCallback > $.getOpt('throttleProgressCallbacks') * 1000 ) {
|
|
$.callback('progress');
|
|
$.lastProgressCallback = (new Date);
|
|
}
|
|
$.loaded=e.loaded||0;
|
|
}, false);
|
|
$.loaded = 0;
|
|
$.pendingRetry = false;
|
|
$.callback('progress');
|
|
|
|
// Done (either done, failed or retry)
|
|
var doneHandler = function(e){
|
|
var status = $.status();
|
|
if(status=='success'||status=='error') {
|
|
$.callback(status, $.message());
|
|
$.resumableObj.uploadNextChunk();
|
|
} else {
|
|
$.callback('retry', $.message());
|
|
$.abort();
|
|
$.retries++;
|
|
var retryInterval = $.getOpt('chunkRetryInterval');
|
|
if(retryInterval !== undefined) {
|
|
$.pendingRetry = true;
|
|
setTimeout($.send, retryInterval);
|
|
} else {
|
|
$.send();
|
|
}
|
|
}
|
|
};
|
|
$.xhr.addEventListener('load', doneHandler, false);
|
|
$.xhr.addEventListener('error', doneHandler, false);
|
|
|
|
// Set up the basic query data from Resumable
|
|
var query = {
|
|
resumableChunkNumber: $.offset+1,
|
|
resumableChunkSize: $.getOpt('chunkSize'),
|
|
resumableCurrentChunkSize: $.endByte - $.startByte,
|
|
resumableTotalSize: $.fileObjSize,
|
|
resumableType: $.fileObjType,
|
|
resumableIdentifier: $.fileObj.uniqueIdentifier,
|
|
resumableFilename: $.fileObj.fileName,
|
|
resumableRelativePath: $.fileObj.relativePath,
|
|
resumableTotalChunks: $.fileObj.chunks.length
|
|
};
|
|
// Mix in custom data
|
|
var customQuery = $.getOpt('query');
|
|
if(typeof customQuery == 'function') customQuery = customQuery($.fileObj, $);
|
|
$h.each(customQuery, function(k,v){
|
|
query[k] = v;
|
|
});
|
|
|
|
var func = ($.fileObj.file.slice ? 'slice' : ($.fileObj.file.mozSlice ? 'mozSlice' : ($.fileObj.file.webkitSlice ? 'webkitSlice' : 'slice'))),
|
|
bytes = $.fileObj.file[func]($.startByte,$.endByte),
|
|
data = null,
|
|
target = $.getOpt('target');
|
|
|
|
if ($.getOpt('method') === 'octet') {
|
|
// Add data from the query options
|
|
data = bytes;
|
|
var params = [];
|
|
$h.each(query, function(k,v){
|
|
params.push([encodeURIComponent(k), encodeURIComponent(v)].join('='));
|
|
});
|
|
target = $h.getTarget(params);
|
|
} else {
|
|
// Add data from the query options
|
|
data = new FormData();
|
|
$h.each(query, function(k,v){
|
|
data.append(k,v);
|
|
});
|
|
data.append($.getOpt('fileParameterName'), bytes);
|
|
}
|
|
|
|
$.xhr.open('POST', target);
|
|
$.xhr.timeout = $.getOpt('xhrTimeout');
|
|
$.xhr.withCredentials = $.getOpt('withCredentials');
|
|
// Add data from header options
|
|
$h.each($.getOpt('headers'), function(k,v) {
|
|
$.xhr.setRequestHeader(k, v);
|
|
});
|
|
$.xhr.send(data);
|
|
};
|
|
$.abort = function(){
|
|
// Abort and reset
|
|
if($.xhr) $.xhr.abort();
|
|
$.xhr = null;
|
|
};
|
|
$.status = function(){
|
|
// Returns: 'pending', 'uploading', 'success', 'error'
|
|
if($.pendingRetry) {
|
|
// if pending retry then that's effectively the same as actively uploading,
|
|
// there might just be a slight delay before the retry starts
|
|
return('uploading')
|
|
} else if(!$.xhr) {
|
|
return('pending');
|
|
} else if($.xhr.readyState<4) {
|
|
// Status is really 'OPENED', 'HEADERS_RECEIVED' or 'LOADING' - meaning that stuff is happening
|
|
return('uploading');
|
|
} else {
|
|
if($.xhr.status==200) {
|
|
// HTTP 200, perfect
|
|
return('success');
|
|
} else if($h.contains($.getOpt('permanentErrors'), $.xhr.status) || $.retries >= $.getOpt('maxChunkRetries')) {
|
|
// HTTP 415/500/501, permanent error
|
|
return('error');
|
|
} else {
|
|
// this should never happen, but we'll reset and queue a retry
|
|
// a likely case for this would be 503 service unavailable
|
|
$.abort();
|
|
return('pending');
|
|
}
|
|
}
|
|
};
|
|
$.message = function(){
|
|
return($.xhr ? $.xhr.responseText : '');
|
|
};
|
|
$.progress = function(relative){
|
|
if(typeof(relative)==='undefined') relative = false;
|
|
var factor = (relative ? ($.endByte-$.startByte)/$.fileObjSize : 1);
|
|
if($.pendingRetry) return(0);
|
|
var s = $.status();
|
|
switch(s){
|
|
case 'success':
|
|
case 'error':
|
|
return(1*factor);
|
|
case 'pending':
|
|
return(0*factor);
|
|
default:
|
|
return($.loaded/($.endByte-$.startByte)*factor);
|
|
}
|
|
};
|
|
return(this);
|
|
}
|
|
|
|
// QUEUE
|
|
$.uploadNextChunk = function(){
|
|
var found = false;
|
|
|
|
// In some cases (such as videos) it's really handy to upload the first
|
|
// and last chunk of a file quickly; this let's the server check the file's
|
|
// metadata and determine if there's even a point in continuing.
|
|
if ($.getOpt('prioritizeFirstAndLastChunk')) {
|
|
$h.each($.files, function(file){
|
|
if(file.chunks.length && file.chunks[0].status()=='pending' && file.chunks[0].preprocessState === 0) {
|
|
file.chunks[0].send();
|
|
found = true;
|
|
return(false);
|
|
}
|
|
if(file.chunks.length>1 && file.chunks[file.chunks.length-1].status()=='pending' && file.chunks[0].preprocessState === 0) {
|
|
file.chunks[file.chunks.length-1].send();
|
|
found = true;
|
|
return(false);
|
|
}
|
|
});
|
|
if(found) return(true);
|
|
}
|
|
|
|
// Now, simply look for the next, best thing to upload
|
|
$h.each($.files, function(file){
|
|
if(file.isPaused()===false){
|
|
$h.each(file.chunks, function(chunk){
|
|
if(chunk.status()=='pending' && chunk.preprocessState === 0) {
|
|
chunk.send();
|
|
found = true;
|
|
return(false);
|
|
}
|
|
});
|
|
}
|
|
if(found) return(false);
|
|
});
|
|
if(found) return(true);
|
|
|
|
// The are no more outstanding chunks to upload, check is everything is done
|
|
var outstanding = false;
|
|
$h.each($.files, function(file){
|
|
if(!file.isComplete()) {
|
|
outstanding = true;
|
|
return(false);
|
|
}
|
|
});
|
|
if(!outstanding) {
|
|
// All chunks have been uploaded, complete
|
|
$.fire('complete');
|
|
}
|
|
return(false);
|
|
};
|
|
|
|
|
|
// PUBLIC METHODS FOR RESUMABLE.JS
|
|
$.assignBrowse = function(domNodes, isDirectory){
|
|
if(typeof(domNodes.length)=='undefined') domNodes = [domNodes];
|
|
|
|
$h.each(domNodes, function(domNode) {
|
|
var input;
|
|
if(domNode.tagName==='INPUT' && domNode.type==='file'){
|
|
input = domNode;
|
|
} else {
|
|
input = document.createElement('input');
|
|
input.setAttribute('type', 'file');
|
|
input.style.display = 'none';
|
|
domNode.addEventListener('click', function(){
|
|
input.click();
|
|
}, false);
|
|
domNode.appendChild(input);
|
|
}
|
|
var maxFiles = $.getOpt('maxFiles');
|
|
if (typeof(maxFiles)==='undefined'||maxFiles!=1){
|
|
input.setAttribute('multiple', 'multiple');
|
|
} else {
|
|
input.removeAttribute('multiple');
|
|
}
|
|
if(isDirectory){
|
|
input.setAttribute('webkitdirectory', 'webkitdirectory');
|
|
} else {
|
|
input.removeAttribute('webkitdirectory');
|
|
}
|
|
// When new files are added, simply append them to the overall list
|
|
input.addEventListener('change', function(e){
|
|
appendFilesFromFileList(e.target.files);
|
|
e.target.value = '';
|
|
}, false);
|
|
});
|
|
};
|
|
$.assignDrop = function(domNodes){
|
|
if(typeof(domNodes.length)=='undefined') domNodes = [domNodes];
|
|
|
|
$h.each(domNodes, function(domNode) {
|
|
domNode.addEventListener('dragover', onDragOver, false);
|
|
domNode.addEventListener('drop', onDrop, false);
|
|
});
|
|
};
|
|
$.unAssignDrop = function(domNodes) {
|
|
if (typeof(domNodes.length) == 'undefined') domNodes = [domNodes];
|
|
|
|
$h.each(domNodes, function(domNode) {
|
|
domNode.removeEventListener('dragover', onDragOver);
|
|
domNode.removeEventListener('drop', onDrop);
|
|
});
|
|
};
|
|
$.isUploading = function(){
|
|
var uploading = false;
|
|
$h.each($.files, function(file){
|
|
if (file.isUploading()) {
|
|
uploading = true;
|
|
return(false);
|
|
}
|
|
});
|
|
return(uploading);
|
|
};
|
|
$.upload = function(){
|
|
// Make sure we don't start too many uploads at once
|
|
if($.isUploading()) return;
|
|
// Kick off the queue
|
|
$.fire('uploadStart');
|
|
for (var num=1; num<=$.getOpt('simultaneousUploads'); num++) {
|
|
$.uploadNextChunk();
|
|
}
|
|
};
|
|
$.pause = function(){
|
|
// Resume all chunks currently being uploaded
|
|
$h.each($.files, function(file){
|
|
file.abort();
|
|
});
|
|
$.fire('pause');
|
|
};
|
|
$.cancel = function(){
|
|
for(var i = $.files.length - 1; i >= 0; i--) {
|
|
$.files[i].cancel();
|
|
}
|
|
$.fire('cancel');
|
|
};
|
|
$.progress = function(){
|
|
var totalDone = 0;
|
|
var totalSize = 0;
|
|
// Resume all chunks currently being uploaded
|
|
$h.each($.files, function(file){
|
|
totalDone += file.progress()*file.size;
|
|
totalSize += file.size;
|
|
});
|
|
return(totalSize>0 ? totalDone/totalSize : 0);
|
|
};
|
|
$.addFile = function(file){
|
|
appendFilesFromFileList([file]);
|
|
};
|
|
$.removeFile = function(file){
|
|
for(var i = $.files.length - 1; i >= 0; i--) {
|
|
if($.files[i] === file) {
|
|
$.files.splice(i, 1);
|
|
}
|
|
}
|
|
};
|
|
$.getFromUniqueIdentifier = function(uniqueIdentifier){
|
|
var ret = false;
|
|
$h.each($.files, function(f){
|
|
if(f.uniqueIdentifier==uniqueIdentifier) ret = f;
|
|
});
|
|
return(ret);
|
|
};
|
|
$.getSize = function(){
|
|
var totalSize = 0;
|
|
$h.each($.files, function(file){
|
|
totalSize += file.size;
|
|
});
|
|
return(totalSize);
|
|
};
|
|
|
|
return(this);
|
|
};
|
|
|
|
|
|
// Node.js-style export for Node and Component
|
|
if (typeof module != 'undefined') {
|
|
module.exports = Resumable;
|
|
} else if (typeof define === "function" && define.amd) {
|
|
// AMD/requirejs: Define the module
|
|
define(function(){
|
|
return Resumable;
|
|
});
|
|
} else {
|
|
// Browser: Expose to window
|
|
window.Resumable = Resumable;
|
|
}
|
|
|
|
})();
|