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Async file uploads
This commit is contained in:
Nathan Gray
222
phpgwapi/js/jquery/jquery.html5_upload.js
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222
phpgwapi/js/jquery/jquery.html5_upload.js
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(function($) {
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jQuery.fn.html5_upload = function(options) {
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var available_events = ['onStart', 'onStartOne', 'onProgress', 'onFinishOne', 'onFinish', 'onError'];
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var options = jQuery.extend({
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onStart: function(event, total) {
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return true;
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},
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onStartOne: function(event, name, number, total) {
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return true;
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},
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onProgress: function(event, progress, name, number, total) {
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},
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onFinishOne: function(event, response, name, number, total) {
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},
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onFinish: function(event, total) {
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},
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onError: function(event, name, error) {
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},
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onBrowserIncompatible: function() {
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alert("Sorry, but your browser is incompatible with uploading files using HTML5 (at least, with current preferences.\n Please install the latest version of Firefox, Safari or Chrome");
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},
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autostart: true,
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autoclear: true,
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stopOnFirstError: false,
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sendBoundary: false,
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fieldName: 'user_file[]',//ignore if sendBoundary is false
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method: 'post',
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STATUSES: {
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'STARTED': 'Запуск',
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'PROGRESS': 'Загрузка',
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'LOADED': 'Обработка',
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'FINISHED': 'Завершено'
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},
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headers: {
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"Cache-Control":"no-cache",
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"X-Requested-With":"XMLHttpRequest",
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"X-File-Name": function(file){return file.fileName},
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"X-File-Size": function(file){return file.fileSize},
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"Content-Type": function(file){
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if (!options.sendBoundary) return 'multipart/form-data';
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return false;
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}
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},
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setName: function(text) {},
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setStatus: function(text) {},
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setProgress: function(value) {},
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genName: function(file, number, total) {
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return file + "(" + (number+1) + " из " + total + ")";
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},
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genStatus: function(progress, finished) {
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if (finished) {
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return options.STATUSES['FINISHED'];
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}
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if (progress == 0) {
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return options.STATUSES['STARTED'];
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}
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else if (progress == 1) {
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return options.STATUSES['LOADED'];
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}
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else {
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return options.STATUSES['PROGRESS'];
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}
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},
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genProgress: function(loaded, total) {
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return loaded / total;
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}
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}, options);
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function upload() {
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var files = this.files;
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var total = files.length;
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var $this = $(this);
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if (!$this.triggerHandler('html5_upload.onStart', [total])) {
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return false;
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}
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this.disabled = true;
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var uploaded = 0;
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var xhr = this.html5_upload['xhr'];
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this.html5_upload['continue_after_abort'] = true;
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function upload_file(number) {
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if (number == total) {
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$this.trigger('html5_upload.onFinish', [total]);
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options.setStatus(options.genStatus(1, true));
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$this.attr("disabled", false);
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if (options.autoclear) {
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$this.val("");
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}
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return;
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}
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var file = files[number];
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if (!$this.triggerHandler('html5_upload.onStartOne', [file.fileName, number, total])) {
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return upload_file(number+1);
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}
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options.setStatus(options.genStatus(0));
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options.setName(options.genName(file.fileName, number, total));
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options.setProgress(options.genProgress(0, file.fileSize));
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xhr.upload['onprogress'] = function(rpe) {
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$this.trigger('html5_upload.onProgress', [rpe.loaded / rpe.total, file.fileName, number, total]);
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options.setStatus(options.genStatus(rpe.loaded / rpe.total));
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options.setProgress(options.genProgress(rpe.loaded, rpe.total));
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};
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xhr.onload = function(load) {
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$this.trigger('html5_upload.onFinishOne', [xhr.responseText, file.fileName, number, total]);
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options.setStatus(options.genStatus(1, true));
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options.setProgress(options.genProgress(file.fileSize, file.fileSize));
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upload_file(number+1);
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};
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xhr.onabort = function() {
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if ($this[0].html5_upload['continue_after_abort']) {
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upload_file(number+1);
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}
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else {
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$this.attr("disabled", false);
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if (options.autoclear) {
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$this.val("");
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}
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}
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};
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xhr.onerror = function(e) {
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$this.trigger('html5_upload.onError', [file.fileName, e]);
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if (!options.stopOnFirstError) {
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upload_file(number+1);
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}
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};
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xhr.open(options.method, typeof(options.url) == "function" ? options.url(number) : options.url, true);
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$.each(options.headers,function(key,val){
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val = typeof(val) == "function" ? val(file) : val; // resolve value
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if (val === false) return true; // if resolved value is boolean false, do not send this header
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xhr.setRequestHeader(key, val);
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});
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if (!options.sendBoundary) {
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xhr.send(file);
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}
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else {
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if (window.FormData) {//Many thanks to scottt.tw
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var f = new FormData();
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f.append(typeof(options.fieldName) == "function" ? options.fieldName() : options.fieldName, file);
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xhr.send(f);
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}
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else if (file.getAsBinary) {//Thanks to jm.schelcher
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var boundary = '------multipartformboundary' + (new Date).getTime();
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var dashdash = '--';
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var crlf = '\r\n';
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/* Build RFC2388 string. */
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var builder = '';
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builder += dashdash;
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builder += boundary;
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builder += crlf;
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builder += 'Content-Disposition: form-data; name="'+(typeof(options.fieldName) == "function" ? options.fieldName() : options.fieldName)+'"';
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//thanks to oyejo...@gmail.com for this fix
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fileName = unescape(encodeURIComponent(file.fileName)); //encode_utf8
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builder += '; filename="' + fileName + '"';
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builder += crlf;
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builder += 'Content-Type: application/octet-stream';
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builder += crlf;
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builder += crlf;
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/* Append binary data. */
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builder += file.getAsBinary();
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builder += crlf;
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/* Write boundary. */
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builder += dashdash;
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builder += boundary;
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builder += dashdash;
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builder += crlf;
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xhr.setRequestHeader('content-type', 'multipart/form-data; boundary=' + boundary);
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xhr.sendAsBinary(builder);
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}
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else {
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options.onBrowserIncompatible();
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}
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}
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}
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upload_file(0);
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return true;
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}
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return this.each(function() {
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this.html5_upload = {
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xhr: new XMLHttpRequest(),
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continue_after_abort: true
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};
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if (options.autostart) {
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$(this).bind('change', upload);
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}
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for (event in available_events) {
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if (options[available_events[event]]) {
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$(this).bind("html5_upload."+available_events[event], options[available_events[event]]);
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}
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}
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$(this)
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.bind('html5_upload.start', upload)
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.bind('html5_upload.cancelOne', function() {
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this.html5_upload['xhr'].abort();
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})
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.bind('html5_upload.cancelAll', function() {
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this.html5_upload['continue_after_abort'] = false;
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this.html5_upload['xhr'].abort();
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})
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.bind('html5_upload.destroy', function() {
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this.html5_upload['continue_after_abort'] = false;
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this.xhr.abort();
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delete this.html5_upload;
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$(this).unbind('html5_upload.*').unbind('change', upload);
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});
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});
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};
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})(jQuery);
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