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import jQuery from "../core.js";
import nonce from "./var/nonce.js";
import rquery from "./var/rquery.js";
import "../ajax.js";
var oldCallbacks = [],
rjsonp = /(=)\?(?=&|$)|\?\?/;
// Default jsonp settings
jQuery.ajaxSetup( {
jsonp: "callback",
jsonpCallback: function() {
var callback = oldCallbacks.pop() || ( jQuery.expando + "_" + ( nonce.guid++ ) );
this[ callback ] = true;
return callback;
}
} );
// Detect, normalize options and install callbacks for jsonp requests
jQuery.ajaxPrefilter( "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" ) === 0 &&
rjsonp.test( s.data ) && "data"
);
// Get callback name, remembering preexisting value associated with it
callbackName = s.jsonpCallback = typeof s.jsonpCallback === "function" ?
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() {
// If previous value didn't exist - remove it
if ( overwritten === undefined ) {
jQuery( window ).removeProp( callbackName );
// Otherwise restore preexisting value
} else {
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 && typeof overwritten === "function" ) {
overwritten( responseContainer[ 0 ] );
}
responseContainer = overwritten = undefined;
} );
// Delegate to script
return "script";
} );
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