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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: '点击选择图片'
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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: 'Images',
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extensions: 'gif,jpg,jpeg,bmp,png',
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mimeTypes: 'image/*'
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},
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// swf文件路径
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swf: BASE_URL + '/Uploader.swf',
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disableGlobalDnd: true,
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chunked: true,
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server: upUrl,
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fileNumLimit: 1,
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fileSizeLimit: 5 * 1024 * 1024, // 200 M
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fileSingleSizeLimit: 1 * 1024 * 1024 // 50 M
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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 + '张图片，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+ '张照片至XX相册，'+
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stats.uploadFailNum + '张照片上传失败，<a class="retry" href="#">重新上传</a>失败图片或<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 + '张（' +
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WebUploader.formatSize( fileSize ) +
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'），已上传' + stats.successNum + '张';
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if ( stats.uploadFailNum ) {
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text += '，失败' + stats.uploadFailNum + '张';
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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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$info.on( 'click', '.ignore', function() {
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alert( 'todo' );
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} );
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$upload.addClass( 'state-' + state );
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updateTotalProgress();
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});
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