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| author | Mike Chen <chagel@gmail.com> | 2009-07-05 10:23:06 +0800 |
|---|---|---|
| committer | Mike Chen <chagel@gmail.com> | 2009-07-05 10:23:06 +0800 |
| commit | 2acb62174ab2cac9c7a88faafcb5f0a22a54db6f (patch) | |
| tree | 93e9d22d6fb8a6c882e3915a8511a3ac542a1e67 /templates/content/js/jquery.ajaxfileupload.js | |
| download | askbot-2acb62174ab2cac9c7a88faafcb5f0a22a54db6f.tar.gz askbot-2acb62174ab2cac9c7a88faafcb5f0a22a54db6f.tar.bz2 askbot-2acb62174ab2cac9c7a88faafcb5f0a22a54db6f.zip | |
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Diffstat (limited to 'templates/content/js/jquery.ajaxfileupload.js')
| -rw-r--r-- | templates/content/js/jquery.ajaxfileupload.js | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/templates/content/js/jquery.ajaxfileupload.js b/templates/content/js/jquery.ajaxfileupload.js new file mode 100644 index 00000000..106de906 --- /dev/null +++ b/templates/content/js/jquery.ajaxfileupload.js @@ -0,0 +1,195 @@ +jQuery.extend({
+ createUploadIframe: function(id, uri){
+ //create frame
+ var frameId = 'jUploadFrame' + id;
+ if(window.ActiveXObject) {
+ var io = document.createElement('<iframe id="' + frameId + '" name="' + frameId + '" />');
+ if(typeof uri== 'boolean'){
+ io.src = 'javascript:false';
+ }
+ else if(typeof uri== 'string'){
+ io.src = uri;
+ }
+ }
+ else {
+ var io = document.createElement('iframe');
+ io.id = frameId;
+ io.name = frameId;
+ }
+ io.style.position = 'absolute';
+ io.style.top = '-1000px';
+ io.style.left = '-1000px';
+
+ document.body.appendChild(io);
+ return io;
+ },
+ createUploadForm: function(id, fileElementId)
+ {
+ //create form
+ 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);
+ //set attributes
+ $(form).css('position', 'absolute');
+ $(form).css('top', '-1200px');
+ $(form).css('left', '-1200px');
+ $(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);
+ 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.innerText : 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.textContent || document.body.innerText : 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", [xml, s] );
+ } else
+ jQuery.handleError(s, xml, status);
+ } catch(e)
+ {
+ status = "error";
+ jQuery.handleError(s, xml, status, e);
+ }
+
+ // The request was completed
+ if( s.global )
+ jQuery.event.trigger( "ajaxComplete", [xml, 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
+ {
+ $(io).remove();
+ $(form).remove();
+
+ } catch(e) {
+ jQuery.handleError(s, xml, null, 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 io = $('#' + frameId);
+ var form = $('#' + formId);
+ $(form).attr('action', s.url);
+ $(form).attr('method', 'POST');
+ $(form).attr('target', frameId);
+ if(form.encoding)
+ {
+ form.encoding = 'multipart/form-data';
+ }
+ else
+ {
+ form.enctype = 'multipart/form-data';
+ }
+ $(form).submit();
+
+ } catch(e)
+ {
+ jQuery.handleError(s, xml, null, e);
+ }
+ if(window.attachEvent){
+ document.getElementById(frameId).attachEvent('onload', uploadCallback);
+ }
+ else{
+ document.getElementById(frameId).addEventListener('load', uploadCallback, false);
+ }
+ return {abort: function () {}};
+
+ },
+
+ uploadHttpData: function( r, type ) {
+ var data = !type;
+ data = type == "xml" || data ? r.responseXML : r.responseText;
+ // If the type is "script", eval it in global context
+ if ( type == "script" )
+ jQuery.globalEval( data );
+ // Get the JavaScript object, if JSON is used.
+ if ( type == "json" )
+ eval( "data = " + data );
+ // evaluate scripts within html
+ if ( type == "html" )
+ jQuery("<div>").html(data).evalScripts();
+ //alert($('param', data).each(function(){alert($(this).attr('value'));}));
+ return data;
+ }
+})
+
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