Cleans up and simplifies code shared by ajaxPrefilter and ajaxTransport. Removes chainability of ajaxSetup, ajaxPrefilter and ajaxTransport. Also makes sure context is handled properly by ajaxSetup (unit test added).
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jaubourg
parent
96b00a4935
commit
64e1cdbb95
203
src/ajax.js
203
src/ajax.js
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@ -161,7 +161,9 @@ jQuery.extend({
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ajaxSetup: function( settings ) {
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jQuery.extend( true, jQuery.ajaxSettings, settings );
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return this;
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if ( settings.context ) {
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jQuery.ajaxSettings.context = settings.context;
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}
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},
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ajaxSettings: {
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@ -278,6 +280,14 @@ jQuery.extend({
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},
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ajaxPrefilter: function( a , b ) {
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ajaxPrefilterOrTransport( "prefilters" , a , b );
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},
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ajaxTransport: function( a , b ) {
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return ajaxPrefilterOrTransport( "transports" , a , b );
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},
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// Main method
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ajax: function( url , options ) {
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@ -299,7 +309,11 @@ jQuery.extend({
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jQuery_lastModified = jQuery.lastModified,
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jQuery_etag = jQuery.etag,
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// Callbacks contexts
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callbackContext = options.context || s.context || s,
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// We force the original context if it exists
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// or take it from jQuery.ajaxSettings otherwise
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// (plain objects used as context get extended)
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callbackContext =
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( s.context = ( "context" in options ? options : jQuery.ajaxSettings ).context ) || s,
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globalEventContext = callbackContext === s ? jQuery.event : jQuery( callbackContext ),
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// Deferreds
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deferred = jQuery.Deferred(),
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@ -373,10 +387,6 @@ jQuery.extend({
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}
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};
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// We force the original context
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// (plain objects used as context get extended)
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s.context = options.context;
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// Callback for when everything is done
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// It is defined here because jslint complains if it is declared
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// at the end of the function (which would be more logical and readable)
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@ -850,126 +860,97 @@ jQuery.extend({
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});
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//Execute or select from functions in a given structure of options
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function ajax_selectOrExecute( structure , s , options ) {
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// Base function for both ajaxPrefilter and ajaxTransport
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function ajaxPrefilterOrTransport( arg0 , arg1 , arg2 ) {
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var dataTypes = s.dataTypes,
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transportDataType,
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list,
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selected,
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var type = jQuery.type( arg1 ),
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structure = jQuery.ajaxSettings[ arg0 ],
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i,
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length,
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checked = {},
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flag,
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noSelect = structure !== "transports";
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length;
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function initSearch( dataType ) {
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// We have an options map so we have to inspect the structure
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if ( type === "object" ) {
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flag = transportDataType !== dataType && ! checked[ dataType ];
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var options = arg1,
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originalOptions = arg2,
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// When dealing with prefilters, we execute only
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// (no selection so we never stop when a function
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// returns a non-falsy, non-string value)
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executeOnly = ( arg0 === "prefilters" ),
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inspect = function( dataType, tested ) {
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if ( flag ) {
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if ( ! tested[ dataType ] ) {
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checked[ dataType ] = 1;
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transportDataType = dataType;
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list = s[ structure ][ dataType ];
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i = -1;
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length = list ? list.length : 0 ;
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tested[ dataType ] = true;
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var list = structure[ dataType ],
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selected;
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for( i = 0, length = list ? list.length : 0 ; ( executeOnly || ! selected ) && i < length ; i++ ) {
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selected = list[ i ]( options , originalOptions );
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// If we got redirected to a different dataType,
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// we add it and switch to the corresponding list
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if ( typeof( selected ) === "string" && selected !== dataType ) {
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options.dataTypes.unshift( selected );
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selected = inspect( selected , tested );
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// We always break in order not to continue
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// to iterate in previous list
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break;
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}
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}
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// If we're only executing or nothing was selected
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// we try the catchall dataType
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if ( executeOnly || ! selected ) {
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selected = inspect( "*" , tested );
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}
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// This will be ignored by ajaxPrefilter
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// so it's safe to return no matter what
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return selected;
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}
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};
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// Start inspection with current transport dataType
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return inspect( options.dataTypes[ 0 ] , {} );
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} else {
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// We're requested to add to the structure
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// Signature is ( dataTypeExpression , function )
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// with dataTypeExpression being optional and
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// defaulting to catchAll (*)
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type = type === "function";
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if ( type ) {
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arg2 = arg1;
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arg1 = undefined;
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}
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arg1 = arg1 || "*";
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return flag;
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}
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// We control that the second argument is really a function
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if ( type || jQuery.isFunction( arg2 ) ) {
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initSearch( dataTypes[ 0 ] );
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for ( i = 0 ; ( noSelect || ! selected ) && i <= length ; i++ ) {
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if ( i === length ) {
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initSearch( "*" );
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} else {
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selected = list[ i ]( s , options );
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// If we got redirected to another dataType
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// Search there (if not in progress or already tried)
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if ( typeof( selected ) === "string" &&
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initSearch( selected ) ) {
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dataTypes.unshift( selected );
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selected = 0;
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}
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}
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}
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return noSelect ? jQuery : selected;
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}
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// Add an element to one of the structures in ajaxSettings
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function ajax_addElement( structure , args ) {
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var i,
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start = 0,
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length = args.length,
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dataTypes = [ "*" ],
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dLength = 1,
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dataType,
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functors = [],
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first,
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append,
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list;
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if ( length ) {
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first = jQuery.type( args[ 0 ] );
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if ( first === "object" ) {
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return ajax_selectOrExecute( structure , args[ 0 ] , args[ 1 ] );
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}
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structure = jQuery.ajaxSettings[ structure ];
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if ( first !== "function" ) {
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dataTypes = args[ 0 ].toLowerCase().split(/\s+/);
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dLength = dataTypes.length;
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start = 1;
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}
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if ( dLength && start < length ) {
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functors = sliceFunc.call( args , start );
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for( i = 0 ; i < dLength ; i++ ) {
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var dataTypes = arg1.split( /\s+/ ),
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functor = arg2,
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dataType,
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list,
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placeBefore;
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// For each dataType in the dataTypeExpression
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for( i = 0 , length = dataTypes.length ; i < length ; i++ ) {
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dataType = dataTypes[ i ];
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first = /^\+/.test( dataType );
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if (first) {
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dataType = dataType.substr(1);
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}
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if ( dataType !== "" ) {
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append = Array.prototype[ first ? "unshift" : "push" ];
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list = structure[ dataType ] = structure[ dataType ] || [];
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append.apply( list , functors );
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// We control if we're asked to add before
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// any existing element
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placeBefore = /^\+/.test( dataType );
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if ( placeBefore ) {
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dataType = dataType.substr( 1 );
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}
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list = structure[ dataType ] = structure[ dataType ] || [];
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// then we add to the structure accordingly
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list[ placeBefore ? "unshift" : "push" ]( functor );
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}
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}
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}
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return jQuery;
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}
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// Install prefilter & transport methods
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jQuery.each( [ "Prefilter" , "Transport" ] , function( _ , name ) {
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_ = name.toLowerCase() + "s";
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jQuery[ "ajax" + name ] = function() {
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return ajax_addElement( _ , arguments );
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};
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} );
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})( jQuery );
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@ -9,10 +9,11 @@ jQuery.ajaxSetup({
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jsonpCallback: function() {
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return "jsonp" + jsc++;
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}
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});
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// Detect, normalize options and install callbacks for jsonp requests
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// (dataIsString is used internally)
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}).ajaxPrefilter("json jsonp", function(s, originalSettings, dataIsString) {
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jQuery.ajaxPrefilter("json jsonp", function(s, originalSettings, dataIsString) {
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dataIsString = ( typeof(s.data) === "string" );
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@ -14,9 +14,10 @@ jQuery.ajaxSetup({
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converters: {
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"text script": jQuery.globalEval
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}
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});
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// Handle cache's special case and global
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}).ajaxPrefilter("script", function(s) {
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jQuery.ajaxPrefilter("script", function(s) {
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if ( s.cache === undefined ) {
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s.cache = false;
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@ -26,9 +27,10 @@ jQuery.ajaxSetup({
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s.type = "GET";
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s.global = false;
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}
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});
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// Bind script tag hack transport
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}).ajaxTransport("script", function(s) {
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jQuery.ajaxTransport("script", function(s) {
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// This transport only deals with cross domain requests
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if ( s.crossDomain ) {
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@ -599,6 +599,47 @@ test("jQuery.ajax context modification", function() {
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equals( obj.test, "foo", "Make sure the original object is maintained." );
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});
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test("jQuery.ajax context modification through ajaxSetup", function() {
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expect(4);
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stop();
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var obj = {};
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jQuery.ajaxSetup({
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context: obj
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});
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strictEqual( jQuery.ajaxSettings.context, obj, "Make sure the context is properly set in ajaxSettings." );
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jQuery.ajax({
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url: url("data/name.html"),
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complete: function() {
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strictEqual( this, obj, "Make sure the original object is maintained." );
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jQuery.ajax({
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url: url("data/name.html"),
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context: {},
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complete: function() {
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ok( this !== obj, "Make sure overidding context is possible." );
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jQuery.ajaxSetup({
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context: false
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});
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jQuery.ajax({
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url: url("data/name.html"),
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beforeSend: function(){
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this.test = "foo2";
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},
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complete: function() {
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ok( this !== obj, "Make sure unsetting context is possible." );
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start();
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}
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});
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}
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});
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}
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});
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});
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test("jQuery.ajax() - disabled globals", function() {
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expect( 3 );
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stop();
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