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jQuery(function () {
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var $ = jQuery, // just in case. Make sure it's not an other libaray.
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$wrap = $('#uploader'),
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// 图片容器
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$queue = $('<ul class="filelist"></ul>')
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.appendTo($wrap.find('.queueList')),
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// 状态栏，包括进度和控制按钮
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$statusBar = $wrap.find('.statusBar'),
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// 文件总体选择信息。
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$info = $statusBar.find('.info'),
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// 上传按钮
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$upload = $wrap.find('.uploadBtn'),
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// 没选择文件之前的内容。
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$placeHolder = $wrap.find('.placeholder'),
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// 总体进度条
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$progress = $statusBar.find('.progress').hide(),
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// 添加的文件数量
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fileCount = 0,
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// 添加的文件总大小
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fileSize = 0,
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// 优化retina, 在retina下这个值是2
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ratio = window.devicePixelRatio || 1,
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// 缩略图大小
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thumbnailWidth = 110 * ratio,
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thumbnailHeight = 110 * ratio,
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// 可能有pedding, ready, uploading, confirm, done.
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state = 'pedding',
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// 所有文件的进度信息，key为file id
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percentages = {},
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supportTransition = (function () {
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var s = document.createElement('p').style,
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r = 'transition' in s ||
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'WebkitTransition' in s ||
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'MozTransition' in s ||
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'msTransition' in s ||
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'OTransition' in s;
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s = null;
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return r;
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})(),
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// WebUploader实例
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uploader;
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if (!WebUploader.Uploader.support()) {
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alert('Web Uploader 不支持您的浏览器！如果你使用的是IE浏览器，请尝试升级 flash 播放器');
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throw new Error('WebUploader does not support the browser you are using.');
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}
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// 实例化
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uploader = WebUploader.create({
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pick: {
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id: '#filePicker',
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label: '点击选择文件'
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},
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dnd: '#uploader .queueList',
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paste: document.body,
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accept: {
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title: 'Files',
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extensions: 'gif,jpg,jpeg,bmp,png,pdf,xls,xlsx,doc,docx',
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mimeTypes: '*/*'
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},
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// swf文件路径
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swf: '~/Content/hplus/js/plugins/webuploader/Uploader.swf',
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disableGlobalDnd: true,
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chunked: true,
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// server: 'http://webuploader.duapp.com/server/fileupload.php',
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server: 'http://2betop.net/fileupload.php',
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fileNumLimit: 1,
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fileSizeLimit: 1 * 1024 * 1024,
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fileSingleSizeLimit: 1 * 1024 * 1024
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});
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// 添加“添加文件”的按钮，
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//uploader.addButton({
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// id: '#filePicker2',
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// label: '继续添加'
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//});
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// 当有文件添加进来时执行，负责view的创建
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function addFile(file) {
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var $li = $('<li id="' + file.id + '">' +
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'<p class="title">' + file.name + '</p>' +
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'<p class="imgWrap"></p>' +
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'<p class="progress"><span></span></p>' +
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'</li>'),
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$btns = $('<div class="file-panel">' +
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'<span class="cancel">删除</span>' +
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'<span class="rotateRight">向右旋转</span>' +
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'<span class="rotateLeft">向左旋转</span></div>').appendTo($li),
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$prgress = $li.find('p.progress span'),
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$wrap = $li.find('p.imgWrap'),
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$info = $('<p class="error"></p>'),
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showError = function (code) {
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switch (code) {
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case 'exceed_size':
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text = '文件大小超出';
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break;
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case 'interrupt':
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text = '上传暂停';
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break;
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default:
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text = '上传失败，请重试';
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break;
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}
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$info.text(text).appendTo($li);
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};
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if (file.getStatus() === 'invalid') {
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showError(file.statusText);
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} else {
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// @todo lazyload
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$wrap.text('预览中');
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uploader.makeThumb(file, function (error, src) {
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if (error) {
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$wrap.text('不能预览');
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return;
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}
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var img = $('<img src="' + src + '">');
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$wrap.empty().append(img);
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}, thumbnailWidth, thumbnailHeight);
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percentages[file.id] = [file.size, 0];
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file.rotation = 0;
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}
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file.on('statuschange', function (cur, prev) {
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if (prev === 'progress') {
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$prgress.hide().width(0);
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} else if (prev === 'queued') {
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$li.off('mouseenter mouseleave');
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$btns.remove();
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}
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// 成功
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if (cur === 'error' || cur === 'invalid') {
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console.log(file.statusText);
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showError(file.statusText);
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percentages[file.id][1] = 1;
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} else if (cur === 'interrupt') {
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showError('interrupt');
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} else if (cur === 'queued') {
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percentages[file.id][1] = 0;
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} else if (cur === 'progress') {
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$info.remove();
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$prgress.css('display', 'block');
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} else if (cur === 'complete') {
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$li.append('<span class="success"></span>');
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}
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$li.removeClass('state-' + prev).addClass('state-' + cur);
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});
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$li.on('mouseenter', function () {
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$btns.stop().animate({ height: 30 });
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});
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$li.on('mouseleave', function () {
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$btns.stop().animate({ height: 0 });
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});
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$btns.on('click', 'span', function () {
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var index = $(this).index(),
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deg;
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switch (index) {
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case 0:
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uploader.removeFile(file);
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return;
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case 1:
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file.rotation += 90;
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break;
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case 2:
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file.rotation -= 90;
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break;
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}
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if (supportTransition) {
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deg = 'rotate(' + file.rotation + 'deg)';
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$wrap.css({
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'-webkit-transform': deg,
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'-mos-transform': deg,
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'-o-transform': deg,
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'transform': deg
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});
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} else {
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$wrap.css('filter', 'progid:DXImageTransform.Microsoft.BasicImage(rotation=' + (~~((file.rotation / 90) % 4 + 4) % 4) + ')');
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// use jquery animate to rotation
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// $({
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// rotation: rotation
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// }).animate({
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// rotation: file.rotation
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// }, {
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// easing: 'linear',
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// step: function( now ) {
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// now = now * Math.PI / 180;
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// var cos = Math.cos( now ),
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// sin = Math.sin( now );
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// $wrap.css( 'filter', "progid:DXImageTransform.Microsoft.Matrix(M11=" + cos + ",M12=" + (-sin) + ",M21=" + sin + ",M22=" + cos + ",SizingMethod='auto expand')");
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// }
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// });
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}
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});
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$li.appendTo($queue);
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}
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// 负责view的销毁
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function removeFile(file) {
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var $li = $('#' + file.id);
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delete percentages[file.id];
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updateTotalProgress();
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$li.off().find('.file-panel').off().end().remove();
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}
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function updateTotalProgress() {
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var loaded = 0,
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total = 0,
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spans = $progress.children(),
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percent;
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$.each(percentages, function (k, v) {
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total += v[0];
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loaded += v[0] * v[1];
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});
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percent = total ? loaded / total : 0;
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spans.eq(0).text(Math.round(percent * 100) + '%');
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spans.eq(1).css('width', Math.round(percent * 100) + '%');
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updateStatus();
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}
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function updateStatus() {
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var text = '', stats;
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if (state === 'ready') {
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text = '选中' + fileCount + '个文件，共' +
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WebUploader.formatSize(fileSize) + '。';
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} else if (state === 'confirm') {
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stats = uploader.getStats();
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if (stats.uploadFailNum) {
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text = '已成功上传' + stats.successNum + '个文件，' +
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stats.uploadFailNum + '个文件上传失败，<a class="retry" href="#">重新上传</a>失败文件或<a class="ignore" href="#">忽略</a>'
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}
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} else {
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stats = uploader.getStats();
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text = '共' + fileCount + '个（' +
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WebUploader.formatSize(fileSize) +
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'），已上传' + stats.successNum + '个';
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if (stats.uploadFailNum) {
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text += '，失败' + stats.uploadFailNum + '个';
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}
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}
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$info.html(text);
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}
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function setState(val) {
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var file, stats;
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if (val === state) {
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return;
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}
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$upload.removeClass('state-' + state);
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$upload.addClass('state-' + val);
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state = val;
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switch (state) {
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case 'pedding':
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$placeHolder.removeClass('element-invisible');
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$queue.parent().removeClass('filled');
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$queue.hide();
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$statusBar.addClass('element-invisible');
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uploader.refresh();
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break;
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case 'ready':
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$placeHolder.addClass('element-invisible');
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$('#filePicker2').removeClass('element-invisible');
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$queue.parent().addClass('filled');
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$queue.show();
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$statusBar.removeClass('element-invisible');
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uploader.refresh();
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break;
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case 'uploading':
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$('#filePicker2').addClass('element-invisible');
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$progress.show();
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$upload.text('暂停上传');
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break;
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case 'paused':
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$progress.show();
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$upload.text('继续上传');
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break;
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case 'confirm':
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$progress.hide();
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$upload.text('开始上传').addClass('disabled');
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stats = uploader.getStats();
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if (stats.successNum && !stats.uploadFailNum) {
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setState('finish');
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return;
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}
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break;
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case 'finish':
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stats = uploader.getStats();
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if (stats.successNum) {
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alert('上传成功');
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} else {
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// 没有成功的图片，重设
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state = 'done';
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location.reload();
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}
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break;
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}
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updateStatus();
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}
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uploader.onUploadProgress = function (file, percentage) {
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var $li = $('#' + file.id),
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$percent = $li.find('.progress span');
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$percent.css('width', percentage * 100 + '%');
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percentages[file.id][1] = percentage;
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updateTotalProgress();
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};
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uploader.onFileQueued = function (file) {
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fileCount++;
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fileSize += file.size;
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if (fileCount === 1) {
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$placeHolder.addClass('element-invisible');
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$statusBar.show();
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}
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addFile(file);
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setState('ready');
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updateTotalProgress();
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};
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uploader.onFileDequeued = function (file) {
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fileCount--;
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fileSize -= file.size;
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if (!fileCount) {
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setState('pedding');
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}
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removeFile(file);
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updateTotalProgress();
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};
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uploader.on('all', function (type) {
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var stats;
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switch (type) {
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case 'uploadFinished':
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setState('confirm');
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break;
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case 'startUpload':
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setState('uploading');
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break;
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case 'stopUpload':
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setState('paused');
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break;
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}
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});
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uploader.onError = function (code) {
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alert('Eroor: ' + code);
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};
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$upload.on('click', function () {
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if ($(this).hasClass('disabled')) {
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return false;
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}
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if (state === 'ready') {
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uploader.upload();
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} else if (state === 'paused') {
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uploader.upload();
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} else if (state === 'uploading') {
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uploader.stop();
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}
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});
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$info.on('click', '.retry', function () {
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uploader.retry();
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});
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$info.on('click', '.ignore', function () {
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var files = uploader.getFiles()
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$.each(files, function (i, f) {
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uploader.removeFile(f)
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})
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});
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$upload.addClass('state-' + state);
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updateTotalProgress();
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});
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