238 lines
8.2 KiB
JavaScript
238 lines
8.2 KiB
JavaScript
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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(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)
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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 = $('<form action="" method="POST" name="' + formId + '" id="' + formId + '" enctype="multipart/form-data"></form>');
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var oldElement = $('#' + fileElementId);
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var newElement = $(oldElement).clone();
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$(oldElement).attr('id', fileId);
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$(oldElement).before(newElement);
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$(oldElement).appendTo(form);
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//set attributes
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$(form).css('position', 'absolute');
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$(form).css('top', '-1200px');
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$(form).css('left', '-1200px');
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$(form).appendTo('body');
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return form;
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},
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addOtherRequestsToForm: function(form,data)
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{
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// add extra parameter
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var originalElement = $('<input type="hidden" name="" value="">');
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for (var key in data) {
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name = key;
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value = data[key];
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var cloneElement = originalElement.clone();
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cloneElement.attr({'name':name,'value':value});
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$(cloneElement).appendTo(form);
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}
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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);
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if ( s.data ) form = jQuery.addOtherRequestsToForm(form,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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{
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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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{
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var io = document.getElementById(frameId);
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try
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{
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if(io.contentWindow)
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{
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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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{
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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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{
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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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{
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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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{
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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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{
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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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{
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$(io).remove();
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$(form).remove();
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} catch(e)
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{
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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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{
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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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{
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// var io = $('#' + frameId);
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var form = $('#' + formId);
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$(form).attr('action', s.url);
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$(form).attr('method', 'POST');
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$(form).attr('target', frameId);
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if(form.encoding)
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{
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form.encoding = 'multipart/form-data';
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}
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else
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{
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form.enctype = 'multipart/form-data';
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}
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$(form).submit();
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} catch(e)
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{
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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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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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{
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// If you add mimetype in your response,
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// you have to delete the '<pre></pre>' tag.
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// The pre tag in Chrome has attribute, so have to use regex to remove
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var data = r.responseText;
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var rx = new RegExp("<pre.*?>(.*?)</pre>","i");
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var am = rx.exec(data);
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//this is the desired data extracted
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var data = (am) ? am[1] : ""; //the only submatch or empty
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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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//alert($('param', data).each(function(){alert($(this).attr('value'));}));
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return data;
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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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