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- define([
- "../core",
- "./var/nonce",
- "./var/rquery",
- "../ajax"
- ], function( jQuery, nonce, rquery ) {
- var oldCallbacks = [],
- rjsonp = /(=)\?(?=&|$)|\?\?/;
- // Default jsonp settings
- jQuery.ajaxSetup({
- jsonp: "callback",
- jsonpCallback: function() {
- var callback = oldCallbacks.pop() || ( jQuery.expando + "_" + ( nonce++ ) );
- this[ callback ] = true;
- return callback;
- }
- });
- // Detect, normalize options and install callbacks for jsonp requests
- jQuery.ajaxPrefilter( "json jsonp", function( s, originalSettings, jqXHR ) {
- var callbackName, overwritten, responseContainer,
- jsonProp = s.jsonp !== false && ( rjsonp.test( s.url ) ?
- "url" :
- typeof s.data === "string" && !( s.contentType || "" ).indexOf("application/x-www-form-urlencoded") && rjsonp.test( s.data ) && "data"
- );
- // Handle iff the expected data type is "jsonp" or we have a parameter to set
- if ( jsonProp || s.dataTypes[ 0 ] === "jsonp" ) {
- // Get callback name, remembering preexisting value associated with it
- callbackName = s.jsonpCallback = jQuery.isFunction( s.jsonpCallback ) ?
- s.jsonpCallback() :
- s.jsonpCallback;
- // Insert callback into url or form data
- if ( jsonProp ) {
- s[ jsonProp ] = s[ jsonProp ].replace( rjsonp, "$1" + callbackName );
- } else if ( s.jsonp !== false ) {
- s.url += ( rquery.test( s.url ) ? "&" : "?" ) + s.jsonp + "=" + callbackName;
- }
- // Use data converter to retrieve json after script execution
- s.converters["script json"] = function() {
- if ( !responseContainer ) {
- jQuery.error( callbackName + " was not called" );
- }
- return responseContainer[ 0 ];
- };
- // force json dataType
- s.dataTypes[ 0 ] = "json";
- // Install callback
- overwritten = window[ callbackName ];
- window[ callbackName ] = function() {
- responseContainer = arguments;
- };
- // Clean-up function (fires after converters)
- jqXHR.always(function() {
- // Restore preexisting value
- window[ callbackName ] = overwritten;
- // Save back as free
- if ( s[ callbackName ] ) {
- // make sure that re-using the options doesn't screw things around
- s.jsonpCallback = originalSettings.jsonpCallback;
- // save the callback name for future use
- oldCallbacks.push( callbackName );
- }
- // Call if it was a function and we have a response
- if ( responseContainer && jQuery.isFunction( overwritten ) ) {
- overwritten( responseContainer[ 0 ] );
- }
- responseContainer = overwritten = undefined;
- });
- // Delegate to script
- return "script";
- }
- });
- });
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