penracourses/static/filer/js/libs/fileuploader.min.js

/*
Multiple file upload component with progress-bar, drag-and-drop.
http://github.com/valums/file-uploader

Copyright (C) 2011 by Andris Valums

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/

var qq=qq||{};qq.extend=function(e,t){for(var n in t)e[n]=t[n]},qq.indexOf=function(e,t,n){if(e.indexOf)return e.indexOf(t,n);n=n||0;var o=e.length;for(0>n&&(n+=o);o>n;n++)if(n in e&&e[n]===t)return n;return-1},qq.getUniqueId=function(){var e=0;return function(){return e++}}(),qq.attach=function(e,t,n){e.addEventListener?e.addEventListener(t,n,!1):e.attachEvent&&e.attachEvent("on"+t,n)},qq.detach=function(e,t,n){e.removeEventListener?e.removeEventListener(t,n,!1):e.attachEvent&&e.detachEvent("on"+t,n)},qq.preventDefault=function(e){e.preventDefault?e.preventDefault():e.returnValue=!1},qq.insertBefore=function(e,t){t.parentNode.insertBefore(e,t)},qq.remove=function(e){e.parentNode.removeChild(e)},qq.contains=function(e,t){return e==t?!0:e.contains?e.contains(t):!!(8&t.compareDocumentPosition(e))},qq.toElement=function(){var e=document.createElement("div");return function(t){e.innerHTML=t;var n=e.firstChild;return e.removeChild(n),n}}(),qq.css=function(e,t){null!=t.opacity&&"string"!=typeof e.style.opacity&&"undefined"!=typeof e.filters&&(t.filter="alpha(opacity="+Math.round(100*t.opacity)+")"),qq.extend(e.style,t)},qq.hasClass=function(e,t){var n=new RegExp("(^| )"+t+"( |$)");return n.test(e.className)},qq.addClass=function(e,t){qq.hasClass(e,t)||(e.className+=" "+t)},qq.removeClass=function(e,t){var n=new RegExp("(^| )"+t+"( |$)");e.className=e.className.replace(n," ").replace(/^\s+|\s+$/g,"")},qq.setText=function(e,t){e.innerText=t,e.textContent=t},qq.children=function(e){for(var t=[],n=e.firstChild;n;)1==n.nodeType&&t.push(n),n=n.nextSibling;return t},qq.getByClass=function(e,t){if(e.querySelectorAll)return e.querySelectorAll("."+t);for(var n=[],o=e.getElementsByTagName("*"),i=o.length,s=0;i>s;s++)qq.hasClass(o[s],t)&&n.push(o[s]);return n},qq.obj2url=function(e,t,n){var o=[],i="&",s=function(e,n){var i=t?/\[\]$/.test(t)?t:t+"["+n+"]":n;"undefined"!=i&&"undefined"!=n&&o.push("object"==typeof e?qq.obj2url(e,i,!0):"[object Function]"===Object.prototype.toString.call(e)?encodeURIComponent(i)+"="+encodeURIComponent(e()):encodeURIComponent(i)+"="+encodeURIComponent(e))};if(!n&&t)i=/\?/.test(t)?/\?$/.test(t)?"":"&":"?",o.push(t),o.push(qq.obj2url(e));else if("[object Array]"===Object.prototype.toString.call(e)&&"undefined"!=typeof e)for(var a=0,r=e.length;r>a;++a)s(e[a],a);else if("undefined"!=typeof e&&null!==e&&"object"==typeof e)for(var a in e)s(e[a],a);else o.push(encodeURIComponent(t)+"="+encodeURIComponent(e));return o.join(i).replace(/^&/,"").replace(/%20/g,"+")};var qq=qq||{};qq.FileUploaderBasic=function(e){this._options={debug:!1,action:"/server/upload",params:{},button:null,multiple:!0,maxConnections:3,allowedExtensions:[],sizeLimit:0,minSizeLimit:0,onSubmit:function(e,t){},onProgress:function(e,t,n,o){},onComplete:function(e,t,n){},onCancel:function(e,t){},messages:{typeError:"{file} has invalid extension. Only {extensions} are allowed.",sizeError:"{file} is too large, maximum file size is {sizeLimit}.",minSizeError:"{file} is too small, minimum file size is {minSizeLimit}.",emptyError:"{file} is empty, please select files again without it.",onLeave:"The files are being uploaded, if you leave now the upload will be cancelled."},showMessage:function(e){alert(e)}},qq.extend(this._options,e),this._filesInProgress=0,this._handler=this._createUploadHandler(),this._options.button&&(this._button=this._createUploadButton(this._options.button)),this._preventLeaveInProgress()},qq.FileUploaderBasic.prototype={setParams:function(e){this._options.params=e},getInProgress:function(){return this._filesInProgress},_createUploadButton:function(e){var t=this;return new qq.UploadButton({element:e,multiple:this._options.multiple&&qq.UploadHandlerXhr.isSupported(),onChange:function(e){t._onInputChange(e)}})},_createUploadHandler:function(){var e,t=this;e=qq.UploadHandlerXhr.isSupported()?"UploadHandlerXhr":"UploadHandlerForm";var n=new qq[e]({debug:this._options.debug,action:this._options.action,maxConnections:this._options.maxConnections,onProgress:function(e,n,o,i){t._onProgress(e,n,o,i),t._options.onProgress(e,n,o,i)},onComplete:function(e,n,o){t._onComplete(e,n,o),t._options.onComplete(e,n,o)},onCancel:function(e,n){t._onCancel(e,n),t._options.onCancel(e,n)}});return n},_preventLeaveInProgress:function(){},_onSubmit:function(e,t){this._filesInProgress++},_onProgress:function(e,t,n,o){},_onComplete:function(e,t,n){this._filesInProgress--,n.error&&this._options.showMessage(n.error)},_onCancel:function(e,t){this._filesInProgress--},_onInputChange:function(e){this._handler instanceof qq.UploadHandlerXhr?this._uploadFileList(e.files):this._validateFile(e)&&this._uploadFile(e),this._button.reset()},_uploadFileList:function(e){for(var t=0;t<e.length;t++)if(!this._validateFile(e[t]))return;for(var t=0;t<e.length;t++)this._uploadFile(e[t])},_uploadFile:function(e){var t=this._handler.add(e),n=this._handler.getName(t);this._options.onSubmit(t,n)!==!1&&(this._onSubmit(t,n),this._handler.upload(t,this._options.params))},_validateFile:function(e){var t,n;return e.value?t=e.value.replace(/.*(\/|\\)/,""):(t=null!=e.fileName?e.fileName:e.name,n=null!=e.fileSize?e.fileSize:e.size),this._isAllowedExtension(t)?0===n?(this._error("emptyError",t),!1):n&&this._options.sizeLimit&&n>this._options.sizeLimit?(this._error("sizeError",t),!1):n&&n<this._options.minSizeLimit?(this._error("minSizeError",t),!1):!0:(this._error("typeError",t),!1)},_error:function(e,t){function n(e,t){o=o.replace(e,t)}var o=this._options.messages[e];n("{file}",this._formatFileName(t)),n("{extensions}",this._options.allowedExtensions.join(", ")),n("{sizeLimit}",this._formatSize(this._options.sizeLimit)),n("{minSizeLimit}",this._formatSize(this._options.minSizeLimit)),this._options.showMessage(o)},_formatFileName:function(e){return e.length>33&&(e=e.slice(0,19)+"..."+e.slice(-13)),e},_isAllowedExtension:function(e){var t=-1!==e.indexOf(".")?e.replace(/.*[.]/,"").toLowerCase():"",n=this._options.allowedExtensions;if(!n.length)return!0;for(var o=0;o<n.length;o++)if(n[o].toLowerCase()==t)return!0;return!1},_formatSize:function(e){var t=-1;do e/=1024,t++;while(e>99);return Math.max(e,.1).toFixed(1)+["kB","MB","GB","TB","PB","EB"][t]}},qq.FileUploader=function(e){qq.FileUploaderBasic.apply(this,arguments),qq.extend(this._options,{element:null,listElement:null,template:'<div class="qq-uploader"><div class="qq-upload-drop-area"><span>Drop files here to upload</span></div><div class="qq-upload-button">Upload a file</div><ul class="qq-upload-list"></ul></div>',fileTemplate:'<li><span class="qq-upload-file"></span><span class="qq-upload-spinner"></span><span class="qq-upload-size"></span><a class="qq-upload-cancel" href="#">Cancel</a><span class="qq-upload-failed-text">Failed</span></li>',classes:{button:"qq-upload-button",drop:"qq-upload-drop-area",dropActive:"qq-upload-drop-area-active",list:"qq-upload-list",file:"qq-upload-file",spinner:"qq-upload-spinner",size:"qq-upload-size",cancel:"qq-upload-cancel",success:"qq-upload-success",fail:"qq-upload-fail"}}),qq.extend(this._options,e),this._element=this._options.element,this._element.innerHTML=this._options.template,this._listElement=this._options.listElement||this._find(this._element,"list"),this._classes=this._options.classes,this._button=this._createUploadButton(this._find(this._element,"button")),this._bindCancelEvent(),this._setupDragDrop()},qq.extend(qq.FileUploader.prototype,qq.FileUploaderBasic.prototype),qq.extend(qq.FileUploader.prototype,{_find:function(e,t){var n=qq.getByClass(e,this._options.classes[t])[0];if(!n)throw new Error("element not found "+t);return n},_setupDragDrop:function(){var e=this,t=this._find(this._element,"drop"),n=new qq.UploadDropZone({element:t,onEnter:function(n){qq.addClass(t,e._classes.dropActive),n.stopPropagation()},onLeave:function(e){e.stopPropagation()},onLeaveNotDescendants:function(n){qq.removeClass(t,e._classes.dropActive)},onDrop:function(n){t.style.display="none",qq.removeClass(t,e._classes.dropActive),e._uploadFileList(n.dataTransfer.files)}});t.style.display="none",qq.attach(document,"dragenter",function(e){n._isValidFileDrag(e)&&(t.style.display="block")}),qq.attach(document,"dragleave",function(e){if(n._isValidFileDrag(e)){var o=document.elementFromPoint(e.clientX,e.clientY);o&&"HTML"!=o.nodeName||(t.style.display="none")}})},_onSubmit:function(e,t){qq.FileUploaderBasic.prototype._onSubmit.apply(this,arguments),this._addToList(e,t)},_onProgress:function(e,t,n,o){qq.FileUploaderBasic.prototype._onProgress.apply(this,arguments);var i=this._getItemByFileId(e),s=this._find(i,"size");s.style.display="inline";var a;a=n!=o?Math.round(n/o*100)+"% from "+this._formatSize(o):this._formatSize(o),qq.setText(s,a)},_onComplete:function(e,t,n){qq.FileUploaderBasic.prototype._onComplete.apply(this,arguments);var o=this._getItemByFileId(e);qq.remove(this._find(o,"cancel")),qq.remove(this._find(o,"spinner")),n.success?qq.addClass(o,this._classes.success):qq.addClass(o,this._classes.fail)},_addToList:function(e,t){var n=qq.toElement(this._options.fileTemplate);n.qqFileId=e;var o=this._find(n,"file");qq.setText(o,this._formatFileName(t)),this._find(n,"size").style.display="none",this._listElement.appendChild(n)},_getItemByFileId:function(e){for(var t=this._listElement.firstChild;t;){if(t.qqFileId==e)return t;t=t.nextSibling}},_bindCancelEvent:function(){var e=this,t=this._listElement;qq.attach(t,"click",function(t){t=t||window.event;var n=t.target||t.srcElement;if(qq.hasClass(n,e._classes.cancel)){qq.preventDefault(t);var o=n.parentNode;e._handler.cancel(o.qqFileId),qq.remove(o)}})}}),qq.UploadDropZone=function(e){this._options={element:null,onEnter:function(e){},onLeave:function(e){},onLeaveNotDescendants:function(e){},onDrop:function(e){}},qq.extend(this._options,e),this._element=this._options.element,this._disableDropOutside(),this._attachEvents()},qq.UploadDropZone.prototype={_disableDropOutside:function(e){qq.UploadDropZone.dropOutsideDisabled||(qq.attach(document,"dragover",function(e){e.dataTransfer&&(e.dataTransfer.dropEffect="none",e.preventDefault())}),qq.UploadDropZone.dropOutsideDisabled=!0)},_attachEvents:function(){var e=this;qq.attach(e._element,"dragover",function(t){if(e._isValidFileDrag(t)){var n=t.dataTransfer.effectAllowed;"move"==n||"linkMove"==n?t.dataTransfer.dropEffect="move":t.dataTransfer.dropEffect="copy",t.stopPropagation(),t.preventDefault()}}),qq.attach(e._element,"dragenter",function(t){e._isValidFileDrag(t)&&e._options.onEnter(t)}),qq.attach(e._element,"dragleave",function(t){if(e._isValidFileDrag(t)){e._options.onLeave(t);var n=document.elementFromPoint(t.clientX,t.clientY);qq.contains(this,n)||e._options.onLeaveNotDescendants(t)}}),qq.attach(e._element,"drop",function(t){e._isValidFileDrag(t)&&(t.preventDefault(),e._options.onDrop(t))})},_isValidFileDrag:function(e){var t=e.dataTransfer,n=navigator.userAgent.indexOf("AppleWebKit")>-1;return t&&"none"!=t.effectAllowed&&(t.files||!n&&t.types.contains&&t.types.contains("Files"))}},qq.UploadButton=function(e){this._options={element:null,multiple:!1,name:"file",onChange:function(e){},hoverClass:"qq-upload-button-hover",focusClass:"qq-upload-button-focus"},qq.extend(this._options,e),this._element=this._options.element,qq.css(this._element,{position:"relative",overflow:"hidden",direction:"ltr"}),this._input=this._createInput()},qq.UploadButton.prototype={getInput:function(){return this._input},reset:function(){this._input.parentNode&&qq.remove(this._input),qq.removeClass(this._element,this._options.focusClass),this._input=this._createInput()},_createInput:function(){var e=document.createElement("input");this._options.multiple&&e.setAttribute("multiple","multiple"),e.setAttribute("type","file"),e.setAttribute("name",this._options.name),qq.css(e,{position:"absolute",right:0,top:0,fontFamily:"Arial",fontSize:"118px",margin:0,padding:0,cursor:"pointer",opacity:0}),this._element.appendChild(e);var t=this;return qq.attach(e,"change",function(){t._options.onChange(e)}),qq.attach(e,"mouseover",function(){qq.addClass(t._element,t._options.hoverClass)}),qq.attach(e,"mouseout",function(){qq.removeClass(t._element,t._options.hoverClass)}),qq.attach(e,"focus",function(){qq.addClass(t._element,t._options.focusClass)}),qq.attach(e,"blur",function(){qq.removeClass(t._element,t._options.focusClass)}),window.attachEvent&&e.setAttribute("tabIndex","-1"),e}},qq.UploadHandlerAbstract=function(e){this._options={debug:!1,action:"/upload.php",maxConnections:999,onProgress:function(e,t,n,o){},onComplete:function(e,t,n){},onCancel:function(e,t){}},qq.extend(this._options,e),this._queue=[],this._params=[]},qq.UploadHandlerAbstract.prototype={log:function(e){this._options.debug&&window.console&&console.log("[uploader] "+e)},add:function(e){},upload:function(e,t){var n=this._queue.push(e),o={};qq.extend(o,t),this._params[e]=o,n<=this._options.maxConnections&&this._upload(e,this._params[e])},cancel:function(e){this._cancel(e),this._dequeue(e)},cancelAll:function(){for(var e=0;e<this._queue.length;e++)this._cancel(this._queue[e]);this._queue=[]},getName:function(e){},getSize:function(e){},getQueue:function(){return this._queue},_upload:function(e){},_cancel:function(e){},_dequeue:function(e){var t=qq.indexOf(this._queue,e);this._queue.splice(t,1);var n=this._options.maxConnections;if(this._queue.length>=n&&n>t){var o=this._queue[n-1];this._upload(o,this._params[o])}}},qq.UploadHandlerForm=function(e){qq.UploadHandlerAbstract.apply(this,arguments),this._inputs={}},qq.extend(qq.UploadHandlerForm.prototype,qq.UploadHandlerAbstract.prototype),qq.extend(qq.UploadHandlerForm.prototype,{add:function(e){e.setAttribute("name","qqfile");var t="qq-upload-handler-iframe"+qq.getUniqueId();return this._inputs[t]=e,e.parentNode&&qq.remove(e),t},getName:function(e){return this._inputs[e].value.replace(/.*(\/|\\)/,"")},_cancel:function(e){this._options.onCancel(e,this.getName(e)),delete this._inputs[e];var t=document.getElementById(e);t&&(t.setAttribute("src","javascript:false;"),qq.remove(t))},_upload:function(e,t){var n=this._inputs[e];if(!n)throw new Error("file with passed id was not added, or already uploaded or cancelled");var o=this.getName(e),i=this._createIframe(e),s=this._createForm(i,t);s.appendChild(n);var a=this;return this._attachLoadEvent(i,function(){a.log("iframe loaded");var t=a._getIframeContentJSON(i);a._options.onComplete(e,o,t),a._dequeue(e),delete a._inputs[e],setTimeout(function(){qq.remove(i)},1)}),s.submit(),qq.remove(s),e},_attachLoadEvent:function(e,t){qq.attach(e,"load",function(){e.parentNode&&(e.contentDocument&&e.contentDocument.body&&"false"==e.contentDocument.body.innerHTML||t())})},_getIframeContentJSON:function(iframe){var doc=iframe.contentDocument?iframe.contentDocument:iframe.contentWindow.document,response;this.log("converting iframe's innerHTML to JSON"),this.log("innerHTML = "+doc.body.innerHTML);try{response=eval("("+doc.body.innerHTML+")")}catch(err){response={}}return response},_createIframe:function(e){var t=qq.toElement('<iframe src="javascript:false;" name="'+e+'" />');return t.setAttribute("id",e),t.style.display="none",document.body.appendChild(t),t},_createForm:function(e,t){var n=qq.toElement('<form method="post" enctype="multipart/form-data"></form>'),o=qq.obj2url(t,this._options.action);return n.setAttribute("action",o),n.setAttribute("target",e.name),n.style.display="none",document.body.appendChild(n),n}}),qq.UploadHandlerXhr=function(e){qq.UploadHandlerAbstract.apply(this,arguments),this._files=[],this._xhrs=[],this._loaded=[]},qq.UploadHandlerXhr.isSupported=function(){var e=document.createElement("input");return e.type="file","multiple"in e&&"undefined"!=typeof File&&"undefined"!=typeof(new XMLHttpRequest).upload},qq.extend(qq.UploadHandlerXhr.prototype,qq.UploadHandlerAbstract.prototype),qq.extend(qq.UploadHandlerXhr.prototype,{add:function(e){if(!(e instanceof File))throw new Error("Passed obj in not a File (in qq.UploadHandlerXhr)");return this._files.push(e)-1},getName:function(e){var t=this._files[e];return null!=t.fileName?t.fileName:t.name},getSize:function(e){var t=this._files[e];return null!=t.fileSize?t.fileSize:t.size},getLoaded:function(e){return this._loaded[e]||0},_upload:function(e,t){var n=this._files[e],o=this.getName(e);this.getSize(e);this._loaded[e]=0;var i=this._xhrs[e]=new XMLHttpRequest,s=this;i.upload.onprogress=function(t){t.lengthComputable&&(s._loaded[e]=t.loaded,s._options.onProgress(e,o,t.loaded,t.total))},i.onreadystatechange=function(){4==i.readyState&&s._onComplete(e,i)},t=t||{},t.qqfile=o;var a=qq.obj2url(t,this._options.action);i.open("POST",a,!0),i.setRequestHeader("X-Requested-With","XMLHttpRequest"),i.setRequestHeader("X-File-Name",encodeURIComponent(o)),i.setRequestHeader("Content-Type","application/octet-stream"),i.send(n)},_onComplete:function(id,xhr){if(this._files[id]){var name=this.getName(id),size=this.getSize(id);if(this._options.onProgress(id,name,size,size),200==xhr.status){this.log("xhr - server response received"),this.log("responseText = "+xhr.responseText);var response;try{response=eval("("+xhr.responseText+")")}catch(err){response={}}this._options.onComplete(id,name,response)}else this._options.onComplete(id,name,{});this._files[id]=null,this._xhrs[id]=null,this._dequeue(id)}},_cancel:function(e){this._options.onCancel(e,this.getName(e)),this._files[e]=null,this._xhrs[e]&&(this._xhrs[e].abort(),this._xhrs[e]=null)}});