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176 lines
6.6 KiB
Plaintext
176 lines
6.6 KiB
Plaintext
jQuery.extend({
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createUploadIframe: function (id, uri) {
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//create frame
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var frameId = 'jUploadFrame' + id;
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var iframeHtml = '<iframe id="' + frameId + '" name="' + frameId + '" style="position:absolute; top:-9999px; left:-9999px"';
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if (window.ActiveXObject) {
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if (typeof uri == 'boolean') {
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iframeHtml += ' src="' + 'javascript:false' + '"';
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}
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else if (typeof uri == 'string') {
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iframeHtml += ' src="' + uri + '"';
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}
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}
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iframeHtml += ' />';
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jQuery(iframeHtml).appendTo(document.body);
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return jQuery('#' + frameId).get(0);
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},
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createUploadForm: function (id, fileElementId, data) {
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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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if (data) {
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for (var i in data) {
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jQuery('<input type="hidden" name="' + i + '" value="' + data[i] + '" />').appendTo(form);
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}
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}
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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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//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 = new Date().getTime()
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var form = jQuery.createUploadForm(id, s.fileElementId, (typeof (s.data) == 'undefined' ? false : 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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// Watch for a new set of requests
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if (s.global && !jQuery.active++) {
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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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// Wait for a response to come back
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var uploadCallback = function (isTimeout) {
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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 a local callback was specified, fire it and pass it the data
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if (s.success)
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s.success(data, status);
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// Fire the global callback
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if (s.global)
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jQuery.event.trigger("ajaxSuccess", [xml, s]);
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} else
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jQuery.handleError(s, xml, status);
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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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// The request was completed
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if (s.global)
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jQuery.event.trigger("ajaxComplete", [xml, s]);
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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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// Process result
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if (s.complete)
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s.complete(xml, status);
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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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}
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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 () {
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// Check to see if the request is still happening
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if (!requestDone) uploadCallback("timeout");
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}, 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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jQuery(form).attr('encoding', 'multipart/form-data');
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}
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else {
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jQuery(form).attr('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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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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// If the 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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// Get the JavaScript object, if JSON is used.
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if (type == "json")
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cceval("data = " + data);
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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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return data;
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}
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});
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