// JavaScript Document
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jQuery.extend({
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createUploadIframe: function(id, uri)
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{
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//create frame
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var frameId = 'jUploadFrame' + id;
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if(window.ActiveXObject) {
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//var io = document.createElement('<iframe id="' + frameId + '" name="' + frameId + '" />');
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if(jQuery.browser.version=="9.0" || jQuery.browser.version=="10.0"){
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var io = document.createElement('iframe');
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io.id = frameId;
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io.name = frameId;
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}else if(jQuery.browser.version=="6.0" || jQuery.browser.version=="7.0" || jQuery.browser.version=="8.0"){
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var io = document.createElement('<iframe id="' + frameId + '" name="' + frameId + '" />');
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if(typeof uri== 'boolean'){
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io.src = 'javascript:false';
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}
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else if(typeof uri== 'string'){
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io.src = uri;
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}
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}
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}else {
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var io = document.createElement('iframe');
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io.id = frameId;
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io.name = frameId;
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}
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io.style.position = 'absolute';
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io.style.top = '-1000px';
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io.style.left = '-1000px';
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document.body.appendChild(io);
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return io;
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},
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createUploadForm: function(id, fileElementId, data)
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{
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//create form
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var formId = 'jUploadForm' + id;
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var fileId = 'jUploadFile' + id;
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var form = jQuery('<form action="" method="POST" name="' + formId + '" id="' + formId + '" enctype="multipart/form-data"></form>');
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//只能上传一个文件
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//var oldElement = jQuery('#' + fileElementId);
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//var newElement = jQuery(oldElement).clone();
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//jQuery(oldElement).attr('id', fileId);
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//jQuery(oldElement).before(newElement);
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//jQuery(oldElement).appendTo(form);
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//支持多文件上传
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//fileElementId:'uploadfile1',//原使用方法
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//现使用方法 fileElementId : ['uploadfile1','uploadfile2','uploadfile3','uploadfile4','uploadfile5'],
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for(var i in fileElementId){
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var oldElement = jQuery('#' + fileElementId[i]);
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var newElement = jQuery(oldElement).clone();
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jQuery(oldElement).attr('id', fileId);
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jQuery(oldElement).before(newElement);
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jQuery(oldElement).appendTo(form);
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}
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//add data
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if(data) {
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for (var i in data) {
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$('<input type="hidden" name="' + i + '" value="' + data[i] + '" />').appendTo(form);
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}
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}
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//set attributes
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jQuery(form).css('position', 'absolute');
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jQuery(form).css('top', '-1200px');
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jQuery(form).css('left', '-1200px');
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jQuery(form).appendTo('body');
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return form;
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},
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ajaxFileUpload: function(s) {
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// TODO introduce global settings, allowing the client to modify them for all requests, not only timeout
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s = jQuery.extend({}, jQuery.ajaxSettings, s);
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var id = s.id;
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//var id = s.fileElementId;
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var form = jQuery.createUploadForm(id, s.fileElementId,s.data);
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var io = jQuery.createUploadIframe(id, s.secureuri);
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var frameId = 'jUploadFrame' + id;
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var formId = 'jUploadForm' + id;
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if( s.global && ! jQuery.active++ ){
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// Watch for a new set of requests
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jQuery.event.trigger( "ajaxStart" );
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}
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var requestDone = false;
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// Create the request object
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var xml = {};
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if( s.global ){
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jQuery.event.trigger("ajaxSend", [xml, s]);
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}
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var uploadCallback = function(isTimeout){
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// Wait for a response to come back
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var io = document.getElementById(frameId);
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try{
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if(io.contentWindow){
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xml.responseText = io.contentWindow.document.body?io.contentWindow.document.body.innerHTML:null;
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xml.responseXML = io.contentWindow.document.XMLDocument?io.contentWindow.document.XMLDocument:io.contentWindow.document;
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}else if(io.contentDocument){
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xml.responseText = io.contentDocument.document.body?io.contentDocument.document.body.innerHTML:null;
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xml.responseXML = io.contentDocument.document.XMLDocument?io.contentDocument.document.XMLDocument:io.contentDocument.document;
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}
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}catch(e){
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jQuery.handleError(s, xml, null, e);
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}
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if( xml || isTimeout == "timeout"){
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requestDone = true;
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var status;
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try {
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status = isTimeout != "timeout" ? "success" : "error";
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// Make sure that the request was successful or notmodified
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if( status != "error" ){
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// process the data (runs the xml through httpData regardless of callback)
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var data = jQuery.uploadHttpData( xml, s.dataType );
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if( s.success ){
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// ifa local callback was specified, fire it and pass it the data
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s.success( data, status );
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};
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if( s.global ){
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// Fire the global callback
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jQuery.event.trigger( "ajaxSuccess", [xml, s] );
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};
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} else{
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jQuery.handleError(s, xml, status);
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}
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} catch(e){
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status = "error";
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jQuery.handleError(s, xml, status, e);
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};
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if( s.global ){
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// The request was completed
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jQuery.event.trigger( "ajaxComplete", [xml, s] );
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};
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// Handle the global AJAX counter
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if(s.global && ! --jQuery.active){
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jQuery.event.trigger("ajaxStop");
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};
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if(s.complete){
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s.complete(xml, status);
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};
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jQuery(io).unbind();
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setTimeout(function(){
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try{
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jQuery(io).remove();
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jQuery(form).remove();
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}catch(e){
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jQuery.handleError(s, xml, null, e);
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}}, 100);
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xml = null;
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};
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}
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// Timeout checker
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if( s.timeout > 0 ){
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setTimeout(function(){if(!requestDone ){uploadCallback( "timeout" );}}, s.timeout);
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}
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try{
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var form = jQuery('#' + formId);
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jQuery(form).attr('action', s.url);
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jQuery(form).attr('method', 'POST');
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jQuery(form).attr('target', frameId);
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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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}
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jQuery(form).submit();
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} catch(e){
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jQuery.handleError(s, xml, null, e);
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}
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/*if(window.attachEvent){
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document.getElementById(frameId).attachEvent('onload', uploadCallback);
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}
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else{
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document.getElementById(frameId).addEventListener('load', uploadCallback, false);
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} */
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jQuery('#' + frameId).load(uploadCallback);
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return {abort: function () {}};
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},
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uploadHttpData: function( r, type ) {
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var data = !type;
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data = type == "xml" || data ? r.responseXML : r.responseText;
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// ifthe type is "script", eval it in global context
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if( type == "script" ){
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jQuery.globalEval( data );
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}
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// Get the JavaScript object, ifJSON is used.
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if( type == "json" ){
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data = r.responseText;
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var start = data.indexOf(">");
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if(start != -1) {
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var end = data.indexOf("<", start + 1);
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if(end != -1) {
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data = data.substring(start + 1, end);
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}
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}
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eval( "data = " + data);
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}
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// evaluate scripts within html
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if( type == "html" ){
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jQuery("<div>").html(data).evalScripts();
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}
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return data;
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},
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/*handleError: function( s, xml, status, e ) {
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// If a local callback was specified, fire it
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if ( s.error )
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s.error( xml, status, e );
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// Fire the global callback
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if ( s.global )
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jQuery.event.trigger( "ajaxError", [xml, s, e] );
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}*/
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handleError: function( s, xhr, status, e ) {
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// If a local callback was specified, fire it
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if ( s.error ) {
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s.error.call( s.context || s, xhr, status, e );
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}
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// Fire the global callback
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if ( s.global ) {
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(s.context ? jQuery(s.context) : jQuery.event).trigger("ajaxError", [xhr, s, e] );
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}
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}
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});
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