friendica-github/js/ajaxupload.min.js

(function(){function log(){if(typeof(console)!='undefined'&&typeof(console.log)=='function'){Array.prototype.unshift.call(arguments,'[Ajax Upload]');console.log(Array.prototype.join.call(arguments,' '));}}
function addEvent(el,type,fn){if(el.addEventListener){el.addEventListener(type,fn,false);}else if(el.attachEvent){el.attachEvent('on'+type,function(){fn.call(el);});}else{throw new Error('not supported or DOM not loaded');}}
function addResizeEvent(fn){var timeout;addEvent(window,'resize',function(){if(timeout){clearTimeout(timeout);}
timeout=setTimeout(fn,100);});}
var getOffsetSlow=function(el){var top=0,left=0;do{top+=el.offsetTop||0;left+=el.offsetLeft||0;el=el.offsetParent;}while(el);return{left:left,top:top};};if(document.documentElement.getBoundingClientRect){var getOffset=function(el){var box=el.getBoundingClientRect();var doc=el.ownerDocument;var body=doc.body;var docElem=doc.documentElement;var clientTop=docElem.clientTop||body.clientTop||0;var clientLeft=docElem.clientLeft||body.clientLeft||0;var zoom=1;if(body.getBoundingClientRect){var bound=body.getBoundingClientRect();zoom=(bound.right-bound.left)/body.clientWidth;}
if(zoom==0||body.clientWidth==0)
return getOffsetSlow(el);if(zoom>1){clientTop=0;clientLeft=0;}
var top=box.top/zoom+(window.pageYOffset||docElem&&docElem.scrollTop/zoom||body.scrollTop/zoom)-clientTop,left=box.left/zoom+(window.pageXOffset||docElem&&docElem.scrollLeft/zoom||body.scrollLeft/zoom)-clientLeft;return{top:top,left:left};};}else{var getOffset=getOffsetSlow;}
function getBox(el){var left,right,top,bottom;var offset=getOffset(el);left=offset.left;top=offset.top;right=left+el.offsetWidth;bottom=top+el.offsetHeight;return{left:left,right:right,top:top,bottom:bottom};}
function addStyles(el,styles){for(var name in styles){if(styles.hasOwnProperty(name)){el.style[name]=styles[name];}}}
function copyLayout(from,to){var box=getBox(from);addStyles(to,{position:'absolute',left:box.left+'px',top:box.top+'px',width:from.offsetWidth+'px',height:from.offsetHeight+'px'});to.title=from.title;}
var toElement=(function(){var div=document.createElement('div');return function(html){div.innerHTML=html;var el=div.firstChild;return div.removeChild(el);};})();var getUID=(function(){var id=0;return function(){return'ValumsAjaxUpload'+id++;};})();function fileFromPath(file){return file.replace(/.*(\/|\\)/,"");}
function getExt(file){return(-1!==file.indexOf('.'))?file.replace(/.*[.]/,''):'';}
function hasClass(el,name){var re=new RegExp('\\b'+name+'\\b');return re.test(el.className);}
function addClass(el,name){if(!hasClass(el,name)){el.className+=' '+name;}}
function removeClass(el,name){var re=new RegExp('\\b'+name+'\\b');el.className=el.className.replace(re,'');}
function removeNode(el){el.parentNode.removeChild(el);}
window.AjaxUpload=function(button,options){this._settings={action:'upload.php',name:'userfile',data:{},autoSubmit:true,responseType:false,hoverClass:'hover',focusClass:'focus',disabledClass:'disabled',onChange:function(file,extension){},onSubmit:function(file,extension){},onComplete:function(file,response){}};for(var i in options){if(options.hasOwnProperty(i)){this._settings[i]=options[i];}}
if(button.jquery){button=button[0];}else if(typeof button=="string"){if(/^#.*/.test(button)){button=button.slice(1);}
button=document.getElementById(button);}
if(!button||button.nodeType!==1){throw new Error("Please make sure that you're passing a valid element");}
if(button.nodeName.toUpperCase()=='A'){addEvent(button,'click',function(e){if(e&&e.preventDefault){e.preventDefault();}else if(window.event){window.event.returnValue=false;}});}
this._button=button;this._input=null;this._disabled=false;this.enable();this._rerouteClicks();};AjaxUpload.prototype={setData:function(data){this._settings.data=data;},disable:function(){addClass(this._button,this._settings.disabledClass);this._disabled=true;var nodeName=this._button.nodeName.toUpperCase();if(nodeName=='INPUT'||nodeName=='BUTTON'){this._button.setAttribute('disabled','disabled');}
if(this._input){this._input.parentNode.style.visibility='hidden';}},enable:function(){removeClass(this._button,this._settings.disabledClass);this._button.removeAttribute('disabled');this._disabled=false;},_createInput:function(){var self=this;var input=document.createElement("input");input.setAttribute('type','file');input.setAttribute('name',this._settings.name);addStyles(input,{'position':'absolute','right':0,'margin':0,'padding':0,'fontSize':'480px','fontFamily':'sans-serif','cursor':'pointer'});var div=document.createElement("div");addStyles(div,{'display':'block','position':'absolute','overflow':'hidden','margin':0,'padding':0,'opacity':0,'direction':'ltr','zIndex':2147483583,'cursor':'pointer'});if(div.style.opacity!=="0"){if(typeof(div.filters)=='undefined'){throw new Error('Opacity not supported by the browser');}
div.style.filter="alpha(opacity=0)";}
addEvent(input,'change',function(){if(!input||input.value===''){return;}
var file=fileFromPath(input.value);if(false===self._settings.onChange.call(self,file,getExt(file))){self._clearInput();return;}
if(self._settings.autoSubmit){self.submit();}});addEvent(input,'mouseover',function(){addClass(self._button,self._settings.hoverClass);});addEvent(input,'mouseout',function(){removeClass(self._button,self._settings.hoverClass);removeClass(self._button,self._settings.focusClass);input.parentNode.style.visibility='hidden';});addEvent(input,'focus',function(){addClass(self._button,self._settings.focusClass);});addEvent(input,'blur',function(){removeClass(self._button,self._settings.focusClass);});div.appendChild(input);document.body.appendChild(div);this._input=input;},_clearInput:function(){if(!this._input){return;}
removeNode(this._input.parentNode);this._input=null;this._createInput();removeClass(this._button,this._settings.hoverClass);removeClass(this._button,this._settings.focusClass);},_rerouteClicks:function(){var self=this;addEvent(self._button,'mouseover',function(){if(self._disabled){return;}
if(!self._input){self._createInput();}
var div=self._input.parentNode;copyLayout(self._button,div);div.style.visibility='visible';});},_createIframe:function(){var id=getUID();var iframe=toElement('<iframe src="javascript:false;" name="'+id+'" />');iframe.setAttribute('id',id);iframe.style.display='none';document.body.appendChild(iframe);return iframe;},_createForm:function(iframe){var settings=this._settings;var form=toElement('<form method="post" enctype="multipart/form-data"></form>');form.setAttribute('action',settings.action);form.setAttribute('target',iframe.name);form.style.display='none';document.body.appendChild(form);for(var prop in settings.data){if(settings.data.hasOwnProperty(prop)){var el=document.createElement("input");el.setAttribute('type','hidden');el.setAttribute('name',prop);el.setAttribute('value',settings.data[prop]);form.appendChild(el);}}
return form;},_getResponse:function(iframe,file){var toDeleteFlag=false,self=this,settings=this._settings;addEvent(iframe,'load',function(){if(iframe.src=="javascript:'%3Chtml%3E%3C/html%3E';"||iframe.src=="javascript:'<html></html>';"){if(toDeleteFlag){setTimeout(function(){removeNode(iframe);},0);}
return;}
var doc=iframe.contentDocument?iframe.contentDocument:window.frames[iframe.id].document;if(doc.readyState&&doc.readyState!='complete'){return;}
if(doc.body&&doc.body.innerHTML=="false"){return;}
var response;if(doc.XMLDocument){response=doc.XMLDocument;}else if(doc.body){response=doc.body.innerHTML;if(settings.responseType&&settings.responseType.toLowerCase()=='json'){if(doc.body.firstChild&&doc.body.firstChild.nodeName.toUpperCase()=='PRE'){doc.normalize();response=doc.body.firstChild.firstChild.nodeValue;}
if(response){response=eval("("+response+")");}else{response={};}}}else{response=doc;}
settings.onComplete.call(self,file,response);toDeleteFlag=true;iframe.src="javascript:'<html></html>';";});},submit:function(){var self=this,settings=this._settings;if(!this._input||this._input.value===''){return;}
var file=fileFromPath(this._input.value);if(false===settings.onSubmit.call(this,file,getExt(file))){this._clearInput();return;}
var iframe=this._createIframe();var form=this._createForm(iframe);removeNode(this._input.parentNode);removeClass(self._button,self._settings.hoverClass);removeClass(self._button,self._settings.focusClass);form.appendChild(this._input);form.submit();removeNode(form);form=null;removeNode(this._input);this._input=null;this._getResponse(iframe,file);this._createInput();}};})();