54 lines
3.6 KiB
JavaScript
54 lines
3.6 KiB
JavaScript
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/*
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* this file come from:
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* http://www.phpletter.com/Demo/AjaxFileUpload-Demo/
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* v 1.0
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*/
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jQuery.extend({createUploadIframe:function(id,uri)
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{var frameId='jUploadFrame'+id;if(window.ActiveXObject){var io=document.createElement('<iframe id="'+frameId+'" name="'+frameId+'" />');if(typeof uri=='boolean'){io.src='javascript:false';}
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else if(typeof uri=='string'){io.src=uri;}}
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else{var io=document.createElement('iframe');io.id=frameId;io.name=frameId;}
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io.style.position='absolute';io.style.top='-1000px';io.style.left='-1000px';document.body.appendChild(io);return io},createUploadForm:function(id,fileElementId)
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{var formId='jUploadForm'+id;var fileId='jUploadFile'+id;var form=$('<form action="" method="POST" name="'+formId+'" id="'+formId+'" enctype="multipart/form-data"></form>');var oldElement=$('#'+fileElementId);var newElement=$(oldElement).clone();$(oldElement).attr('id',fileId);$(oldElement).before(newElement);$(oldElement).appendTo(form);$(form).css('position','absolute');$(form).css('top','-1200px');$(form).css('left','-1200px');$(form).appendTo('body');return form;},ajaxFileUpload:function(s){s=jQuery.extend({},jQuery.ajaxSettings,s);var id=new Date().getTime()
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var form=jQuery.createUploadForm(id,s.fileElementId);var io=jQuery.createUploadIframe(id,s.secureuri);var frameId='jUploadFrame'+id;var formId='jUploadForm'+id;if(s.global&&!jQuery.active++)
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{jQuery.event.trigger("ajaxStart");}
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var requestDone=false;var xml={}
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if(s.global)
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jQuery.event.trigger("ajaxSend",[xml,s]);var uploadCallback=function(isTimeout)
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{var io=document.getElementById(frameId);try
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{if(io.contentWindow)
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{xml.responseText=io.contentWindow.document.body?io.contentWindow.document.body.innerHTML:null;xml.responseXML=io.contentWindow.document.XMLDocument?io.contentWindow.document.XMLDocument:io.contentWindow.document;}else if(io.contentDocument)
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{xml.responseText=io.contentDocument.document.body?io.contentDocument.document.body.innerHTML:null;xml.responseXML=io.contentDocument.document.XMLDocument?io.contentDocument.document.XMLDocument:io.contentDocument.document;}}catch(e)
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{jQuery.handleError(s,xml,null,e);}
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if(xml||isTimeout=="timeout")
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{requestDone=true;var status;try{status=isTimeout!="timeout"?"success":"error";if(status!="error")
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{var data=jQuery.uploadHttpData(xml,s.dataType);if(s.success)
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s.success(data,status);if(s.global)
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jQuery.event.trigger("ajaxSuccess",[xml,s]);}else
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jQuery.handleError(s,xml,status);}catch(e)
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{status="error";jQuery.handleError(s,xml,status,e);}
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if(s.global)
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jQuery.event.trigger("ajaxComplete",[xml,s]);if(s.global&&!--jQuery.active)
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jQuery.event.trigger("ajaxStop");if(s.complete)
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s.complete(xml,status);jQuery(io).unbind()
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setTimeout(function()
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{try
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{$(io).remove();$(form).remove();}catch(e)
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{jQuery.handleError(s,xml,null,e);}},100)
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xml=null}}
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if(s.timeout>0)
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{setTimeout(function(){if(!requestDone)uploadCallback("timeout");},s.timeout);}
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try
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{var form=$('#'+formId);$(form).attr('action',s.url);$(form).attr('method','POST');$(form).attr('target',frameId);if(form.encoding)
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{form.encoding='multipart/form-data';}
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else
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{form.enctype='multipart/form-data';}
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$(form).submit();}catch(e)
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{jQuery.handleError(s,xml,null,e);}
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if(window.attachEvent){document.getElementById(frameId).attachEvent('onload',uploadCallback);}
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else{document.getElementById(frameId).addEventListener('load',uploadCallback,false);}
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return{abort:function(){}};},uploadHttpData:function(r,type){var data=!type;data=type=="xml"||data?r.responseXML:r.responseText;if(type=="script")
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jQuery.globalEval(data);if(type=="json")
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eval("data = "+data);if(type=="html")
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jQuery("<div>").html(data).evalScripts();return data;}})
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