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Q.Uploader.image.all.js
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/*
* Q.js for Uploader
* author:[email protected]
* update:2017/09/22 14:50
*/
(function (window, undefined) {
"use strict";
var toString = Object.prototype.toString,
has = Object.prototype.hasOwnProperty,
slice = Array.prototype.slice;
//若value不为undefine,则返回value;否则返回defValue
function def(value, defValue) {
return value !== undefined ? value : defValue;
}
//检测是否为函数
function isFunc(fn) {
//在ie11兼容模式（ie6-8）下存在bug,当调用次数过多时可能返回不正确的结果
//return typeof fn == "function";
return toString.call(fn) === "[object Function]";
}
//检测是否为正整数
function isUInt(n) {
return typeof n == "number" && n > 0 && n === Math.floor(n);
}
//触发指定函数,如果函数不存在,则不触发
function fire(fn, bind) {
if (isFunc(fn)) return fn.apply(bind, slice.call(arguments, 2));
}
//扩展对象
//forced:是否强制扩展
function extend(destination, source, forced) {
if (!destination || !source) return destination;
for (var key in source) {
if (key == undefined || !has.call(source, key)) continue;
if (forced || destination[key] === undefined) destination[key] = source[key];
}
return destination;
}
//Object.forEach
extend(Object, {
//遍历对象
forEach: function (obj, fn, bind) {
for (var key in obj) {
if (has.call(obj, key)) fn.call(bind, key, obj[key], obj);
}
}
});
extend(Array.prototype, {
//遍历对象
forEach: function (fn, bind) {
var self = this;
for (var i = 0, len = self.length; i < len; i++) {
if (i in self) fn.call(bind, self[i], i, self);
}
}
});
extend(Date, {
//获取当前日期和时间所代表的毫秒数
now: function () {
return +new Date;
}
});
//-------------------------- browser ---------------------------
var browser_ie;
//ie11 开始不再保持向下兼容(例如,不再支持 ActiveXObject、attachEvent 等特性)
if (window.ActiveXObject || window.msIndexedDB) {
//window.ActiveXObject => ie10-
//window.msIndexedDB => ie11+
browser_ie = document.documentMode || (!!window.XMLHttpRequest ? 7 : 6);
}
//-------------------------- json ---------------------------
//json解析
//secure:是否进行安全检测
function json_decode(text, secure) {
//安全检测
if (secure !== false && !/^[\],:{}\s]*$/.test(text.replace(/\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g, "@").replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, "]").replace(/(?:^|:|,)(?:\s*\[)+/g, ""))) throw new Error("JSON SyntaxError");
try {
return (new Function("return " + text))();
} catch (e) { }
}
if (!window.JSON) window.JSON = {};
if (!JSON.parse) JSON.parse = json_decode;
//-------------------------- DOM ---------------------------
//设置元素透明
function setOpacity(ele, value) {
if (value <= 1) value *= 100;
if (ele.style.opacity != undefined) ele.style.opacity = value / 100;
else if (ele.style.filter != undefined) ele.style.filter = "alpha(opacity=" + parseInt(value) + ")";
}
//获取元素绝对定位
function getOffset(ele, root) {
var left = 0, top = 0, width = ele.offsetWidth, height = ele.offsetHeight;
do {
left += ele.offsetLeft;
top += ele.offsetTop;
ele = ele.offsetParent;
} while (ele && ele != root);
return { left: left, top: top, width: width, height: height };
}
//遍历元素节点
function walk(ele, walk, start, all) {
var el = ele[start || walk];
var list = [];
while (el) {
if (el.nodeType == 1) {
if (!all) return el;
list.push(el);
}
el = el[walk];
}
return all ? list : null;
}
//获取上一个元素节点
function getPrev(ele) {
return ele.previousElementSibling || walk(ele, "previousSibling", null, false);
}
//获取下一个元素节点
function getNext(ele) {
return ele.nextElementSibling || walk(ele, "nextSibling", null, false);
}
//获取第一个元素子节点
function getFirst(ele) {
return ele.firstElementChild || walk(ele, "nextSibling", "firstChild", false);
}
//获取最后一个元素子节点
function getLast(ele) {
return ele.lastElementChild || walk(ele, "previousSibling", "lastChild", false);
}
//获取所有子元素节点
function getChilds(ele) {
return ele.children || walk(ele, "nextSibling", "firstChild", true);
}
//创建元素
function createEle(tagName, className, html) {
var ele = document.createElement(tagName);
if (className) ele.className = className;
if (html) ele.innerHTML = html;
return ele;
}
//解析html标签
function parseHTML(html, all) {
var box = createEle("div", "", html);
return all ? box.childNodes : getFirst(box);
}
//-------------------------- event ---------------------------
var addEvent,
removeEvent;
if (document.addEventListener) { //w3c
addEvent = function (ele, type, fn) {
ele.addEventListener(type, fn, false);
};
removeEvent = function (ele, type, fn) {
ele.removeEventListener(type, fn, false);
};
} else if (document.attachEvent) { //IE
addEvent = function (ele, type, fn) {
ele.attachEvent("on" + type, fn);
};
removeEvent = function (ele, type, fn) {
ele.detachEvent("on" + type, fn);
};
}
//event简单处理
function fix_event(event) {
var e = event || window.event;
//for ie
if (!e.target) e.target = e.srcElement;
return e;
}
//添加事件
function add_event(element, type, handler, once) {
var fn = function (e) {
handler.call(element, fix_event(e));
if (once) removeEvent(element, type, fn);
};
addEvent(element, type, fn);
if (!once) {
return {
//直接返回停止句柄 eg:var api=add_event();api.stop();
stop: function () {
removeEvent(element, type, fn);
}
};
}
}
//触发事件
function trigger_event(ele, type) {
if (isFunc(ele[type])) ele[type]();
else if (ele.fireEvent) ele.fireEvent("on" + type); //ie10-
else if (ele.dispatchEvent) {
var evt = document.createEvent("HTMLEvents");
//initEvent接受3个参数:事件类型,是否冒泡,是否阻止浏览器的默认行为
evt.initEvent(type, true, true);
//鼠标事件,设置更多参数
//var evt = document.createEvent("MouseEvents");
//evt.initMouseEvent(type, true, true, ele.ownerDocument.defaultView, 1, e.screenX, e.screenY, e.clientX, e.clientY, false, false, false, false, 0, null);
ele.dispatchEvent(evt);
}
}
//阻止事件默认行为并停止事件冒泡
function stop_event(event, isPreventDefault, isStopPropagation) {
var e = fix_event(event);
//阻止事件默认行为
if (isPreventDefault !== false) {
if (e.preventDefault) e.preventDefault();
else e.returnValue = false;
}
//停止事件冒泡
if (isStopPropagation !== false) {
if (e.stopPropagation) e.stopPropagation();
else e.cancelBubble = true;
}
}
//---------------------- other ----------------------
var RE_HTTP = /^https?:\/\//i;
//是否http路径(以 http:// 或 https:// 开头)
function isHttpURL(url) {
return RE_HTTP.test(url);
}
//判断指定路径与当前页面是否同域(包括协议检测 eg:http与https不同域)
function isSameHost(url) {
if (!isHttpURL(url)) return true;
var start = RegExp.lastMatch.length,
end = url.indexOf("/", start),
host = url.slice(0, end != -1 ? end : undefined);
return host.toLowerCase() == (location.protocol + "//" + location.host).toLowerCase();
}
//按照进制解析数字的层级 eg:时间转化 -> parseLevel(86400,[60,60,24]) => { value=1, level=3 }
//steps:步进,可以是固定的数字(eg:1024),也可以是具有层次关系的数组(eg:[60,60,24])
//limit:限制解析的层级,正整数,默认为100
function parseLevel(size, steps, limit) {
size = +size;
steps = steps || 1024;
var level = 0,
isNum = typeof steps == "number",
stepNow = 1,
count = isUInt(limit) ? limit : (isNum ? 100 : steps.length);
while (size >= stepNow && level < count) {
stepNow *= (isNum ? steps : steps[level]);
level++;
}
if (level && size < stepNow) {
stepNow /= (isNum ? steps : steps.last());
level--;
}
return { value: level ? size / stepNow : size, level: level };
}
var UNITS_FILE_SIZE = ["B", "KB", "MB", "GB", "TB", "PB", "EB"];
//格式化数字输出,将数字转为合适的单位输出,默认按照1024层级转为文件单位输出
function formatSize(size, ops) {
ops = ops === true ? { all: true } : ops || {};
if (isNaN(size) || size == undefined || size < 0) {
var error = ops.error || "--";
return ops.all ? { text: error } : error;
}
var pl = parseLevel(size, ops.steps, ops.limit),
value = pl.value,
text = value.toFixed(def(ops.digit, 2));
if (ops.trim !== false && text.lastIndexOf(".") != -1) text = text.replace(/\.?0+$/, "");
pl.text = text + (ops.join || "") + (ops.units || UNITS_FILE_SIZE)[pl.level + (ops.start || 0)];
return ops.all ? pl : pl.text;
}
//---------------------- export ----------------------
var Q = {
def: def,
isFunc: isFunc,
isUInt: isUInt,
fire: fire,
extend: extend,
ie: browser_ie,
setOpacity: setOpacity,
getOffset: getOffset,
walk: walk,
getPrev: getPrev,
getNext: getNext,
getFirst: getFirst,
getLast: getLast,
getChilds: getChilds,
createEle: createEle,
parseHTML: parseHTML,
isHttpURL: isHttpURL,
isSameHost: isSameHost,
parseLevel: parseLevel,
formatSize: formatSize
};
if (browser_ie) Q["ie" + (browser_ie < 6 ? 6 : browser_ie)] = true;
Q.event = {
fix: fix_event,
stop: stop_event,
trigger: trigger_event,
add: add_event
};
window.Q = Q;
})(window);
/*
* Q.Uploader.js 文件上传管理器 1.0
* https://github.com/devin87/web-uploader
* author:[email protected]
* update:2018/07/24 15:47
*/
(function (window, undefined) {
"use strict";
var def = Q.def,
fire = Q.fire,
extend = Q.extend,
getFirst = Q.getFirst,
getLast = Q.getLast,
parseJSON = JSON.parse,
createEle = Q.createEle,
parseHTML = Q.parseHTML,
setOpacity = Q.setOpacity,
getOffset = Q.getOffset,
md5File = Q.md5File,
E = Q.event,
addEvent = E.add,
triggerEvent = E.trigger,
stopEvent = E.stop;
//Object.forEach
//Date.now
//-------------------------------- Uploader --------------------------------
var support_html5_upload = false, //是否支持html5(ajax)方式上传
support_multiple_select = false, //是否支持文件多选
support_file_click_trigger = false, //上传控件是否支持click触发文件选择 eg: input.click() => ie9及以下不支持
UPLOADER_GUID = 0, //文件上传管理器唯一标示,多用于同一个页面存在多个管理器的情况
UPLOAD_TASK_GUID = 0, //上传任务唯一标示
UPLOAD_HTML4_ZINDEX = 0; //防止多个上传管理器的触发按钮位置重复引起的问题
//上传状态
var UPLOAD_STATE_READY = 0, //任务已添加,准备上传
UPLOAD_STATE_PROCESSING = 1, //任务上传中
UPLOAD_STATE_COMPLETE = 2, //任务上传完成
UPLOAD_STATE_SKIP = -1, //任务已跳过(不会上传)
UPLOAD_STATE_CANCEL = -2, //任务已取消
UPLOAD_STATE_ERROR = -3; //任务已失败
//获取上传状态说明
function get_upload_status_text(state) {
var LANG = Uploader.Lang;
switch (state) {
case UPLOAD_STATE_READY: return LANG.status_ready;
case UPLOAD_STATE_PROCESSING: return LANG.status_processing;
case UPLOAD_STATE_COMPLETE: return LANG.status_complete;
case UPLOAD_STATE_SKIP: return LANG.status_skip;
case UPLOAD_STATE_CANCEL: return LANG.status_cancel;
case UPLOAD_STATE_ERROR: return LANG.status_error;
}
return state;
}
//上传探测
function detect() {
var XHR = window.XMLHttpRequest;
if (XHR && new XHR().upload && window.FormData) support_html5_upload = true;
var input = document.createElement("input");
input.type = "file";
support_multiple_select = !!input.files;
support_file_click_trigger = support_html5_upload;
}
//截取字符串
function get_last_find(str, find) {
var index = str.lastIndexOf(find);
return index != -1 ? str.slice(index) : "";
}
//将逗号分隔的字符串转为键值对
function split_to_map(str) {
if (!str) return;
var list = str.split(","), map = {};
for (var i = 0, len = list.length; i < len; i++) {
map[list[i]] = true;
}
return map;
}
//iframe load 事件
//注意：低版本 ie 支持 iframe 的 onload 事件,不过是隐形的(iframe.onload 方式绑定的将不会触发),需要通过 attachEvent 来注册
function bind_iframe_load(iframe, fn) {
if (iframe.attachEvent) iframe.attachEvent("onload", fn);
else iframe.addEventListener("load", fn, false);
}
//计算上传速度
function set_task_speed(task, total, loaded) {
if (!total || total <= 0) return;
var nowTime = Date.now(), tick;
//上传完毕,计算平均速度(Byte/s)
if (loaded >= total) {
tick = nowTime - task.startTime;
if (tick) task.avgSpeed = Math.min(Math.round(total * 1000 / tick), total);
else if (!task.speed) task.avgSpeed = task.speed = total;
task.time = tick || 0;
task.endTime = nowTime;
return;
}
//即时速度(Byte/s)
tick = nowTime - task.lastTime;
if (tick < 200) return;
task.speed = Math.min(Math.round((loaded - task.loaded) * 1000 / tick), task.total);
task.lastTime = nowTime;
}
/*
文件上传管理器,调用示例
new Uploader({
//--------------- 必填 ---------------
url: "", //上传路径
target: element, //上传按钮，可为数组
view: element, //上传任务视图(需加载UI接口默认实现)
//--------------- 可选 ---------------
html5: true, //是否启用html5上传,若浏览器不支持,则自动禁用
multiple: true, //选择文件时是否允许多选,若浏览器不支持,则自动禁用(仅html5模式有效)
clickTrigger:true, //是否启用click触发文件选择 eg: input.click() => ie9及以下不支持
auto: true, //添加任务后是否立即上传
data: {}, //上传文件的同时可以指定其它参数,该参数将以POST的方式提交到服务器
workerThread: 1, //同时允许上传的任务数(仅html5模式有效)
upName: "upfile", //上传参数名称,若后台需要根据name来获取上传数据,可配置此项
accept: "", //指定浏览器接受的文件类型 eg:image/*,video/*
isDir: false, //是否是文件夹上传（仅Webkit内核浏览器和新版火狐有效）
allows: "", //允许上传的文件类型(扩展名),多个之间用逗号隔开
disallows: "", //禁止上传的文件类型(扩展名)
maxSize: 2*1024*1024, //允许上传的最大文件大小,字节,为0表示不限(仅对支持的浏览器生效,eg: IE10+、Firefox、Chrome)
isSlice: false, //是否启用分片上传，若为true，则isQueryState和isMd5默认为true
chunkSize: 2 * 1024 * 1024, //默认分片大小为2MB
isQueryState:false, //是否查询文件状态（for 秒传或续传）
isMd5: false, //是否计算上传文件md5值
isUploadAfterHash:true, //是否在Hash计算完毕后再上传
sliceRetryCount:2, //分片上传失败重试次数
container:element, //一般无需指定
getPos:function, //一般无需指定
//上传回调事件(function)
on: {
init, //上传管理器初始化完毕后触发
select, //点击上传按钮准备选择上传文件之前触发,返回false可禁止选择文件
add[Async], //添加任务之前触发,返回false将跳过该任务
upload[Async], //上传任务之前触发,返回false将跳过该任务
send[Async], //发送数据之前触发,返回false将跳过该任务
cancel, //取消上传任务后触发
remove, //移除上传任务后触发
progress, //上传进度发生变化后触发(仅html5模式有效)
complete //上传完成后触发
},
//UI接口(function),若指定了以下方法,将忽略默认实现
UI:{
init, //执行初始化操作
draw, //添加任务后绘制任务界面
update, //更新任务界面
over //任务上传完成
}
});
*/
function Uploader(settings) {
var self = this,
ops = settings || {};
self.guid = ops.guid || "uploader" + (++UPLOADER_GUID);
self.list = [];
self.map = {};
self.index = 0;
self.started = false;
self.set(ops)._init();
}
Uploader.prototype = {
//修复constructor指向
constructor: Uploader,
set: function (settings) {
var self = this,
ops = extend(settings, self.ops);
self.url = ops.url; //上传路径
self.dataType = ops.dataType || "json"; //返回值类型
self.data = ops.data; //上传参数
//上传按钮
self.targets = ops.target || [];
if (!self.targets.forEach) self.targets = [self.targets];
self.target = self.targets[0]; //当前上传按钮
//是否以html5(ajax)方式上传
self.html5 = support_html5_upload && !!def(ops.html5, true);
//是否允许多选(仅在启用了html5的情形下生效)
//在html4模式下,input是一个整体,若启用多选,将无法针对单一的文件进行操作(eg:根据扩展名筛选、取消、删除操作等)
//若无需对文件进行操作,可通过 uploader.multiple = true 强制启用多选(不推荐)
self.multiple = support_multiple_select && self.html5 && !!def(ops.multiple, true);
//是否启用click触发文件选择 eg: input.click() => IE9及以下不支持
self.clickTrigger = support_file_click_trigger && !!def(ops.clickTrigger, true);
//允许同时上传的数量(html5有效)
//由于设计原因,html4仅能同时上传1个任务,请不要更改
self.workerThread = self.html5 ? ops.workerThread || 1 : 1;
//空闲的线程数量
self.workerIdle = self.workerThread;
//是否在添加任务后自动开始
self.auto = ops.auto !== false;
//input元素的name属性
self.upName = ops.upName || "upfile";
//input元素的accept属性,用来指定浏览器接受的文件类型 eg:image/*,video/*
//注意：IE9及以下不支持accept属性
self.accept = ops.accept || ops.allows;
//是否是文件夹上传，仅Webkit内核浏览器和新版火狐有效
self.isDir = ops.isDir;
//允许上传的文件类型（扩展名）,多个之间用逗号隔开 eg:.jpg,.png
self.allows = split_to_map(ops.allows);
//禁止上传的文件类型（扩展名）,多个之间用逗号隔开
self.disallows = split_to_map(ops.disallows);
//允许上传的最大文件大小,字节,为0表示不限(仅对支持的浏览器生效,eg: IE10+、Firefox、Chrome)
self.maxSize = +ops.maxSize || 0;
self.isSlice = !!ops.isSlice; //是否启用分片上传
self.chunkSize = +ops.chunkSize || 2 * 1024 * 1024; //分片上传大小
self.isQueryState = !!def(ops.isQueryState, self.isSlice); //是否查询文件状态（for 秒传或续传）
self.isMd5 = !!def(ops.isMd5, self.isSlice); //是否计算上传文件md5值
self.isUploadAfterHash = ops.isUploadAfterHash !== false; //是否在Hash计算完毕后再上传
self.sliceRetryCount = ops.sliceRetryCount == undefined ? 2 : +ops.sliceRetryCount || 0; //分片上传失败重试次数
//ie9及以下不支持click触发(即使能弹出文件选择框,也无法获取文件数据,报拒绝访问错误)
//若上传按钮位置不确定(比如在滚动区域内),则无法触发文件选择
//设置原则:getPos需返回上传按钮距container的坐标
self.container = ops.container || document.body;
//函数,获取上传按钮距container的坐标,返回格式 eg:{ left: 100, top: 100 }
if (ops.getPos) self.getPos = ops.getPos;
//UI接口,此处将覆盖 prototype 实现
var UI = ops.UI || {};
if (UI.init) self.init = UI.init; //执行初始化操作
if (UI.draw) self.draw = UI.draw; //添加任务后绘制任务界面
if (UI.update) self.update = UI.update; //更新任务界面
if (UI.over) self.over = UI.over; //任务上传完成
//上传回调事件
self.fns = ops.on || {};
//上传选项
self.ops = ops;
if (self.accept && !self.clickTrigger) self.resetInput();
return self;
},
//初始化上传管理器
_init: function () {
var self = this;
if (self._inited) return;
self._inited = true;
var guid = self.guid,
container = self.container;
var boxInput = createEle("div", "upload-input " + guid);
container.appendChild(boxInput);
self.boxInput = boxInput;
//构造html4上传所需的iframe和form
if (!self.html5) {
var iframe_name = "upload_iframe_" + guid;
var html =
'<iframe class="u-iframe" name="' + iframe_name + '"></iframe>' +
'<form class="u-form" action="" method="post" enctype="multipart/form-data" target="' + iframe_name + '"></form>';
var boxHtml4 = createEle("div", "upload-html4 " + guid, html);
container.appendChild(boxHtml4);
var iframe = getFirst(boxHtml4),
form = getLast(boxHtml4);
self.iframe = iframe;
self.form = form;
//html4上传完成回调
bind_iframe_load(iframe, function () {
if (self.workerIdle != 0) return;
var text;
try {
text = iframe.contentWindow.document.body.innerHTML;
} catch (e) { }
self.complete(undefined, UPLOAD_STATE_COMPLETE, text);
});
}
self.targets.forEach(function (target) {
if (self.clickTrigger) {
addEvent(target, "click", function (e) {
if (self.fire("select", e) === false) return;
self.resetInput();
//注意:ie9及以下可以弹出文件选择框,但获取不到选择数据,拒绝访问。
triggerEvent(self.inputFile, "click");
});
} else {
addEvent(target, "mouseover", function (e) {
self.target = this;
self.updatePos();
});
}
});
//html4点击事件
if (!self.clickTrigger) {
addEvent(boxInput, "click", function (e) {
if (self.fire("select", e) === false) stopEvent(e);
});
setOpacity(boxInput, 0);
self.resetInput();
}
self.fire("init");
return self.run("init");
},
//重置上传控件
resetInput: function () {
var self = this,
boxInput = self.boxInput;
if (!boxInput) return self;
boxInput.innerHTML = '<input type="file" name="' + self.upName + '"' + (self.accept ? 'accept="' + self.accept + '"' : '') + (self.isDir ? 'webkitdirectory=""' : '') + ' style="' + (self.clickTrigger ? 'visibility: hidden;' : 'font-size:100px;') + '"' + (self.multiple ? ' multiple="multiple"' : '') + '>';
var inputFile = getFirst(boxInput);
//文件选择事件
addEvent(inputFile, "change", function (e) {
self.add(this);
//html4 重置上传控件
if (!self.html5) self.resetInput();
});
self.inputFile = inputFile;
return self.updatePos();
},
//更新上传按钮坐标(for ie)
updatePos: function (has_more_uploader) {
var self = this;
if (self.clickTrigger) return self;
var getPos = self.getPos || getOffset,
boxInput = self.boxInput,
inputFile = getFirst(boxInput),
target = self.target,
inputWidth = target.offsetWidth,
inputHeight = target.offsetHeight,
pos = inputWidth == 0 ? { left: -10000, top: -10000 } : getPos(target);
boxInput.style.width = inputFile.style.width = inputWidth + "px";
boxInput.style.height = inputFile.style.height = inputHeight + "px";
boxInput.style.left = pos.left + "px";
boxInput.style.top = pos.top + "px";
//多用于选项卡切换中上传按钮位置重复的情况
if (has_more_uploader) boxInput.style.zIndex = ++UPLOAD_HTML4_ZINDEX;
return self;
},
//触发ops上定义的回调方法,优先触发异步回调(以Async结尾)
fire: function (action, arg, callback) {
if (!callback) return fire(this.fns[action], this, arg);
var asyncFun = this.fns[action + "Async"];
if (asyncFun) return fire(asyncFun, this, arg, callback);
callback(fire(this.fns[action], this, arg));
},
//运行内部方法或扩展方法(如果存在)
run: function (action, arg) {
var fn = this[action];
if (fn) fire(fn, this, arg);
return this;
},
//添加一个上传任务
addTask: function (input, file) {
if (!input && !file) return;
var name, size;
if (file) {
name = file.webkitRelativePath || file.name || file.fileName;
size = file.size === 0 ? 0 : file.size || file.fileSize;
} else {
name = get_last_find(input.value, "\\").slice(1) || input.value;
size = -1;
}
var self = this,
ext = get_last_find(name, ".").toLowerCase(),
limit_type;
if ((self.disallows && self.disallows[ext]) || (self.allows && !self.allows[ext])) limit_type = "ext";
else if (size != -1 && self.maxSize && size > self.maxSize) limit_type = "size";
var task = {
id: ++UPLOAD_TASK_GUID,
name: name,
ext: ext,
size: size,
input: input,
file: file,
state: limit_type ? UPLOAD_STATE_SKIP : UPLOAD_STATE_READY
};
if (limit_type) {
task.limited = limit_type;
task.disabled = true;
}
self.fire("add", task, function (result) {
if (result === false || task.disabled || task.limited) return;
task.index = self.list.length;
self.list.push(task);
self.map[task.id] = task;
self.run("draw", task);
if (self.auto) self.start();
});
return task;
},
//添加上传任务,自动判断input(是否多选)或file
add: function (input_or_file) {
var self = this;
if (input_or_file.tagName == "INPUT") {
var files = input_or_file.files;
if (files) {
for (var i = 0, len = files.length; i < len; i++) {
self.addTask(input_or_file, files[i]);
}
} else {
self.addTask(input_or_file);
}
} else {
self.addTask(undefined, input_or_file);
}
},
//批量添加上传任务
addList: function (list) {
for (var i = 0, len = list.length; i < len; i++) {
this.add(list[i]);
}
},
//获取指定任务
get: function (taskId) {
if (taskId != undefined) return this.map[taskId];
},
//取消上传任务
//onlyCancel: 若为true,则仅取消上传而不触发任务完成事件
cancel: function (taskId, onlyCancel) {
var self = this,
task = self.get(taskId);
if (!task) return;
var state = task.state;
//若任务已完成,直接返回
if (state != UPLOAD_STATE_READY && state != UPLOAD_STATE_PROCESSING) return self;
if (state == UPLOAD_STATE_PROCESSING) {
//html5
var xhr = task.xhr;
if (xhr) {
xhr.abort();
//无需调用complete,html5 有自己的处理,此处直接返回
return self;
}
//html4
self.iframe.contentWindow.location = "about:blank";
}
return onlyCancel ? self : self.complete(task, UPLOAD_STATE_CANCEL);
},
//移除任务
remove: function (taskId) {
var task = this.get(taskId);
if (!task) return;
if (task.state == UPLOAD_STATE_PROCESSING) this.cancel(taskId);
//this.list.splice(task.index, 1);
//this.map[task.id] = undefined;
//从数组中移除任务时,由于任务是根据index获取,若不处理index,将导致上传错乱甚至不能上传
//此处重置上传索引,上传时会自动修正为正确的索引(程序会跳过已处理过的任务)
//this.index = 0;
//添加移除标记(用户可以自行操作,更灵活)
task.deleted = true;
this.fire("remove", task);
},
//开始上传
start: function () {
var self = this,
workerIdle = self.workerIdle,
list = self.list,
index = self.index,
count = list.length;
if (!self.started) self.started = true;
if (count <= 0 || index >= count || workerIdle <= 0) return self;
var task = list[index];
self.index++;
return self.upload(task);
},
//上传任务
upload: function (task) {
var self = this;
if (!task || task.state != UPLOAD_STATE_READY || task.skip || task.deleted) return self.start();
task.url = self.url;
self.workerIdle--;
self.fire("upload", task, function (result) {
if (result === false) return self.complete(task, UPLOAD_STATE_SKIP);
if (self.html5 && task.file) self._upload_html5_ready(task);