2010-12-09 19:34:28 +01:00
|
|
|
(function( jQuery ) {
|
|
|
|
|
2011-01-13 16:58:16 +01:00
|
|
|
var // Next active xhr id
|
|
|
|
xhrId = jQuery.now(),
|
2011-01-05 22:41:23 +01:00
|
|
|
|
2011-01-13 16:58:16 +01:00
|
|
|
// active xhrs
|
2010-12-09 19:34:28 +01:00
|
|
|
xhrs = {},
|
|
|
|
|
2011-01-13 02:05:39 +01:00
|
|
|
// #5280: see below
|
2011-01-19 16:55:26 +01:00
|
|
|
xhrUnloadAbortInstalled,
|
2010-12-09 19:34:28 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
// XHR used to determine supports properties
|
|
|
|
testXHR;
|
2011-01-05 22:41:23 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
// Create the request object; Microsoft failed to properly
|
|
|
|
// (This is still attached to ajaxSettings for backward compatibility reasons)
|
|
|
|
jQuery.ajaxSettings.xhr = window.ActiveXObject ?
|
|
|
|
/* Microsoft failed to properly
|
|
|
|
* implement the XMLHttpRequest in IE7 (can't request local files),
|
|
|
|
* so we use the ActiveXObject when it is available
|
|
|
|
* Additionally XMLHttpRequest can be disabled in IE7/IE8 so
|
|
|
|
* we need a fallback.
|
|
|
|
*/
|
|
|
|
function() {
|
|
|
|
if ( window.location.protocol !== "file:" ) {
|
|
|
|
try {
|
|
|
|
return new window.XMLHttpRequest();
|
|
|
|
} catch( xhrError ) {}
|
|
|
|
}
|
2011-01-05 22:41:23 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
try {
|
|
|
|
return new window.ActiveXObject("Microsoft.XMLHTTP");
|
|
|
|
} catch( activeError ) {}
|
|
|
|
} :
|
|
|
|
// For all other browsers, use the standard XMLHttpRequest object
|
|
|
|
function() {
|
|
|
|
return new window.XMLHttpRequest();
|
|
|
|
};
|
2011-01-05 22:41:23 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
// Test if we can create an xhr object
|
|
|
|
try {
|
|
|
|
testXHR = jQuery.ajaxSettings.xhr();
|
|
|
|
} catch( xhrCreationException ) {}
|
2011-01-05 22:41:23 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
//Does this browser support XHR requests?
|
|
|
|
jQuery.support.ajax = !!testXHR;
|
2011-01-05 22:41:23 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
// Does this browser support crossDomain XHR requests
|
|
|
|
jQuery.support.cors = testXHR && "withCredentials" in testXHR;
|
2011-01-05 22:41:23 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
// No need for the temporary xhr anymore
|
|
|
|
testXHR = undefined;
|
2011-01-09 22:20:58 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
// Create transport if the browser can provide an xhr
|
|
|
|
if ( jQuery.support.ajax ) {
|
|
|
|
jQuery.ajaxTransport( function( s , determineDataType ) {
|
2011-01-09 22:20:58 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
// Cross domain only allowed if supported through XMLHttpRequest
|
|
|
|
if ( ! s.crossDomain || jQuery.support.cors ) {
|
2011-01-09 22:20:58 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
var callback;
|
2011-01-09 22:20:58 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
return {
|
2011-01-09 22:20:58 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
send: function(headers, complete) {
|
2011-01-05 22:41:23 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
// #5280: we need to abort on unload or IE will keep connections alive
|
|
|
|
if ( ! xhrUnloadAbortInstalled ) {
|
2011-01-05 22:41:23 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
xhrUnloadAbortInstalled = 1;
|
|
|
|
|
|
|
|
jQuery(window).bind( "unload" , function() {
|
2011-01-05 22:41:23 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
// Abort all pending requests
|
|
|
|
jQuery.each(xhrs, function(_, xhr) {
|
|
|
|
if ( xhr.onreadystatechange ) {
|
|
|
|
xhr.onreadystatechange( 1 );
|
|
|
|
}
|
|
|
|
});
|
2011-01-05 22:41:23 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
});
|
|
|
|
}
|
2011-01-05 22:41:23 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
// Get a new xhr
|
|
|
|
var xhr = s.xhr(),
|
|
|
|
handle;
|
2011-01-05 22:41:23 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
// Open the socket
|
|
|
|
// Passing null username, generates a login popup on Opera (#2865)
|
|
|
|
if ( s.username ) {
|
|
|
|
xhr.open(s.type, s.url, s.async, s.username, s.password);
|
|
|
|
} else {
|
|
|
|
xhr.open(s.type, s.url, s.async);
|
|
|
|
}
|
2011-01-05 22:41:23 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
// Requested-With header
|
|
|
|
// Not set for crossDomain requests with no content
|
|
|
|
// (see why at http://trac.dojotoolkit.org/ticket/9486)
|
|
|
|
// Won't change header if already provided
|
|
|
|
if ( ! ( s.crossDomain && ! s.hasContent ) && ! headers["x-requested-with"] ) {
|
|
|
|
headers["x-requested-with"] = "XMLHttpRequest";
|
|
|
|
}
|
2011-01-05 22:41:23 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
// Need an extra try/catch for cross domain requests in Firefox 3
|
|
|
|
try {
|
2011-01-13 02:05:39 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
jQuery.each(headers, function(key,value) {
|
|
|
|
xhr.setRequestHeader(key,value);
|
|
|
|
});
|
2011-01-05 22:41:23 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
} catch(_) {}
|
2011-01-05 22:41:23 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
// Do send the request
|
|
|
|
try {
|
|
|
|
xhr.send( ( s.hasContent && s.data ) || null );
|
|
|
|
} catch(e) {
|
|
|
|
complete(0, "error", "" + e);
|
|
|
|
return;
|
|
|
|
}
|
2011-01-05 22:41:23 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
// Listener
|
|
|
|
callback = function( _ , isAbort ) {
|
|
|
|
|
|
|
|
// Was never called and is aborted or complete
|
|
|
|
if ( callback && ( isAbort || xhr.readyState === 4 ) ) {
|
|
|
|
|
|
|
|
// Only called once
|
|
|
|
callback = 0;
|
|
|
|
|
|
|
|
// Do not keep as active anymore
|
|
|
|
// and store back into pool
|
|
|
|
if (handle) {
|
|
|
|
xhr.onreadystatechange = jQuery.noop;
|
|
|
|
delete xhrs[ handle ];
|
2010-12-09 19:34:28 +01:00
|
|
|
}
|
2011-01-05 22:41:23 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
// If it's an abort
|
|
|
|
if ( isAbort ) {
|
2011-01-05 22:41:23 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
// Abort it manually if needed
|
|
|
|
if ( xhr.readyState !== 4 ) {
|
|
|
|
xhr.abort();
|
|
|
|
}
|
|
|
|
} else {
|
2011-01-05 22:41:23 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
// Get info
|
|
|
|
var status = xhr.status,
|
|
|
|
statusText,
|
|
|
|
response,
|
|
|
|
responseHeaders = xhr.getAllResponseHeaders();
|
2011-01-05 22:41:23 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
try { // Firefox throws an exception when accessing statusText for faulty cross-domain requests
|
2011-01-05 22:41:23 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
statusText = xhr.statusText;
|
2011-01-05 22:41:23 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
} catch( e ) {
|
2011-01-05 22:41:23 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
statusText = ""; // We normalize with Webkit giving an empty statusText
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
// Filter status for non standard behaviours
|
|
|
|
// (so many they seem to be the actual "standard")
|
|
|
|
status =
|
|
|
|
// Opera returns 0 when it should be 304
|
|
|
|
// Webkit returns 0 for failing cross-domain no matter the real status
|
|
|
|
status === 0 ?
|
2010-12-09 19:34:28 +01:00
|
|
|
(
|
2011-01-19 16:55:26 +01:00
|
|
|
! s.crossDomain || statusText ? // Webkit, Firefox: filter out faulty cross-domain requests
|
|
|
|
(
|
|
|
|
responseHeaders ? // Opera: filter out real aborts #6060
|
|
|
|
304
|
|
|
|
:
|
|
|
|
0
|
|
|
|
)
|
2010-12-09 19:34:28 +01:00
|
|
|
:
|
2011-01-19 16:55:26 +01:00
|
|
|
302 // We assume 302 but could be anything cross-domain related
|
2010-12-09 19:34:28 +01:00
|
|
|
)
|
|
|
|
:
|
2011-01-19 16:55:26 +01:00
|
|
|
(
|
|
|
|
status == 1223 ? // IE sometimes returns 1223 when it should be 204 (see #1450)
|
|
|
|
204
|
|
|
|
:
|
|
|
|
status
|
|
|
|
);
|
|
|
|
|
|
|
|
// Guess response & update dataType accordingly
|
|
|
|
response =
|
|
|
|
determineDataType(
|
|
|
|
s,
|
|
|
|
xhr.getResponseHeader("content-type"),
|
|
|
|
xhr.responseText,
|
|
|
|
xhr.responseXML );
|
|
|
|
|
|
|
|
// Call complete
|
|
|
|
complete(status,statusText,response,responseHeaders);
|
|
|
|
}
|
2011-01-13 02:05:39 +01:00
|
|
|
}
|
2011-01-19 16:55:26 +01:00
|
|
|
};
|
2011-01-05 22:41:23 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
// if we're in sync mode
|
|
|
|
// or it's in cache and has been retrieved directly (IE6 & IE7)
|
|
|
|
// we need to manually fire the callback
|
|
|
|
if ( ! s.async || xhr.readyState === 4 ) {
|
2011-01-05 22:41:23 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
callback();
|
2011-01-05 22:41:23 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
} else {
|
2011-01-05 22:41:23 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
// Add to list of active xhrs
|
|
|
|
handle = xhrId++;
|
|
|
|
xhrs[ handle ] = xhr;
|
|
|
|
xhr.onreadystatechange = callback;
|
|
|
|
}
|
|
|
|
},
|
2011-01-05 22:41:23 +01:00
|
|
|
|
2011-01-19 16:55:26 +01:00
|
|
|
abort: function() {
|
|
|
|
if ( callback ) {
|
|
|
|
callback(0,1);
|
|
|
|
}
|
2010-12-09 19:34:28 +01:00
|
|
|
}
|
2011-01-19 16:55:26 +01:00
|
|
|
};
|
|
|
|
}
|
|
|
|
});
|
|
|
|
}
|
2010-12-09 19:34:28 +01:00
|
|
|
|
2010-12-10 03:14:03 +01:00
|
|
|
})( jQuery );
|