- jQuery.extend({
- createUploadIframe: function (id,uri) {
- //create frame
- var frameId = 'jUploadFrame' + id;
- var iframeHtml = '<iframe id="' + frameId + '" name="' + frameId + '" style="position:absolute; top:-9999px; left:-9999px"';
- if (window.ActiveXObject) {
- if (typeof uri == 'boolean') {
- iframeHtml += ' src="' + 'javascript:false' + '"';
- }
- else if (typeof uri == 'string') {
- iframeHtml += ' src="' + uri + '"';
- }
- }
- iframeHtml += ' />';
- jQuery(iframeHtml).appendTo(document.body);
- return jQuery('#' + frameId).get(0);
- },createUploadForm: function (id,fileElementId,data) {
- //create form
- var formId = 'jUploadForm' + id;
- var fileId = 'jUploadFile' + id;
- var form = jQuery('<form action="" method="POST" name="' + formId + '" id="' + formId + '" enctype="multipart/form-data"></form>');
- if (data) {
- for (var i in data) {
- jQuery('<input type="hidden" name="' + i + '" value="' + data[i] + '" />').appendTo(form);
- }
- }
- var oldElement = jQuery('#' + fileElementId);
- var newElement = jQuery(oldElement).clone(true);
- jQuery(oldElement).attr('id',fileId);
- jQuery(oldElement).before(newElement);
- jQuery(oldElement).appendTo(form);
- //set attributes
- jQuery(form).css('position','absolute');
- jQuery(form).css('top','-1200px');
- jQuery(form).css('left','-1200px');
- jQuery(form).appendTo('body');
- return form;
- },ajaxFileUpload: function (s) {
- // TODO introduce global settings,allowing the client to modify them for all requests,not only timeout
- s = jQuery.extend({},jQuery.ajaxSettings,s);
- var id = new Date().getTime()
- var form = jQuery.createUploadForm(id,s.fileElementId,(typeof (s.data) == 'undefined' ? false : s.data));
- var io = jQuery.createUploadIframe(id,s.secureuri);
- var frameId = 'jUploadFrame' + id;
- var formId = 'jUploadForm' + id;
- // Watch for a new set of requests
- if (s.global && !jQuery.active++) {
- jQuery.event.trigger("ajaxStart");
- }
- var requestDone = false;
- // Create the request object
- var xml = {}
- if (s.global)
- jQuery.event.trigger("ajaxSend",[xml,s]);
- // Wait for a response to come back
- var uploadCallback = function (isTimeout) {
- var io = document.getElementById(frameId);
- try {
- if (io.contentWindow) {
- 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) {
- 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) {
- jQuery.handleError(s,xml,null,e);
- }
- if (xml || isTimeout == "timeout") {
- requestDone = true;
- var status;
- try {
- status = isTimeout != "timeout" ? "success" : "error";
- // Make sure that the request was successful or notmodified
- if (status != "error") {
- // process the data (runs the xml through httpData regardless of callback)
- var data = jQuery.uploadHttpData(xml,s.dataType);
- // If a local callback was specified,fire it and pass it the data
- if (s.success)
- s.success(data,status);
- // Fire the global callback
- if (s.global)
- jQuery.event.trigger("ajaxSuccess",s]);
- } else
- jQuery.handleError(s,status);
- } catch (e) {
- status = "error";
- jQuery.handleError(s,status,e);
- }
- // The request was completed
- if (s.global)
- jQuery.event.trigger("ajaxComplete",s]);
- // Handle the global AJAX counter
- if (s.global && ! --jQuery.active)
- jQuery.event.trigger("ajaxStop");
- // Process result
- if (s.complete)
- s.complete(xml,status);
- jQuery(io).unbind()
- setTimeout(function () {
- try {
- jQuery(io).remove();
- jQuery(form).remove();
- } catch (e) {
- jQuery.handleError(s,e);
- }
- },100)
- xml = null
- }
- }
- // Timeout checker
- if (s.timeout > 0) {
- setTimeout(function () {
- // Check to see if the request is still happening
- if (!requestDone) uploadCallback("timeout");
- },s.timeout);
- }
- try {
- var form = jQuery('#' + formId);
- jQuery(form).attr('action',s.url);
- jQuery(form).attr('method','POST');
- jQuery(form).attr('target',frameId);
- if (form.encoding) {
- jQuery(form).attr('encoding','multipart/form-data');
- }
- else {
- jQuery(form).attr('enctype','multipart/form-data');
- }
- jQuery(form).submit();
- } catch (e) {
- jQuery.handleError(s,e);
- }
- jQuery('#' + frameId).load(uploadCallback);
- return { abort: function () { } };
- },uploadHttpData: function (r,type) {
- var data = !type;
- data = type == "xml" || data ? r.responseXML : r.responseText;
- // If the type is "script",eval it in global context
- if (type == "script")
- jQuery.globalEval(data);
- // Get the JavaScript object,if JSON is used.
- if (type == "json")
- eval("data = " + data);
- // evaluate scripts within html
- if (type == "html")
- jQuery("<div>").html(data).evalScripts();
- return data;
- },handleError: function (s,xhr,e) {
- // If a local callback was specified,fire it
- if (s.error) {
- s.error.call(s.context || s,e);
- }
- // Fire the global callback
- if (s.global) {
- (s.context ? jQuery(s.context) : jQuery.event).trigger("ajaxError",[xhr,s,e]);
- }
- }
- })
var newElement = jQuery(oldElement).clone(true);
