3 // We allow people to omit these default parameters from API requests
4 // there is very customizable error handling here, on a per-call basis
5 // wondering, would it be simpler to make it easy to clone the api object,
6 // change error handling, and use that instead?
9 // Query parameters for API requests
15 // Ajax options for jQuery.ajax()
17 url: mw.util.wikiScript( 'api' ),
19 timeout: 30 * 1000, // 30 seconds
26 * Constructor to create an object to interact with the API of a particular MediaWiki server.
27 * mw.Api objects represent the API of a particular MediaWiki server.
29 * TODO: Share API objects with exact same config.
31 * var api = new mw.Api();
35 * } ).done ( function ( data ) {
36 * console.log( data );
42 * @param {Object} options See defaultOptions documentation above. Ajax options can also be
43 * overridden for each individual request to {@link jQuery#ajax} later on.
45 mw.Api = function ( options ) {
47 if ( options === undefined ) {
51 // Force toString if we got a mw.Uri object
52 if ( options.ajax && options.ajax.url !== undefined ) {
53 options.ajax.url = String( options.ajax.url );
56 options.parameters = $.extend( {}, defaultOptions.parameters, options.parameters );
57 options.ajax = $.extend( {}, defaultOptions.ajax, options.ajax );
59 this.defaults = options;
65 * Normalize the ajax options for compatibility and/or convenience methods.
67 * @param {Object} [arg] An object contaning one or more of options.ajax.
68 * @return {Object} Normalized ajax options.
70 normalizeAjaxOptions: function ( arg ) {
71 // Arg argument is usually empty
72 // (before MW 1.20 it was used to pass ok callbacks)
74 // Options can also be a success callback handler
75 if ( typeof arg === 'function' ) {
82 * Perform API get request
84 * @param {Object} parameters
85 * @param {Object|Function} [ajaxOptions]
86 * @return {jQuery.Promise}
88 get: function ( parameters, ajaxOptions ) {
89 ajaxOptions = this.normalizeAjaxOptions( ajaxOptions );
90 ajaxOptions.type = 'GET';
91 return this.ajax( parameters, ajaxOptions );
95 * Perform API post request
97 * TODO: Post actions for non-local hostnames will need proxy.
99 * @param {Object} parameters
100 * @param {Object|Function} [ajaxOptions]
101 * @return {jQuery.Promise}
103 post: function ( parameters, ajaxOptions ) {
104 ajaxOptions = this.normalizeAjaxOptions( ajaxOptions );
105 ajaxOptions.type = 'POST';
106 return this.ajax( parameters, ajaxOptions );
110 * Perform the API call.
112 * @param {Object} parameters
113 * @param {Object} [ajaxOptions]
114 * @return {jQuery.Promise} Done: API response data. Fail: Error code
116 ajax: function ( parameters, ajaxOptions ) {
118 apiDeferred = $.Deferred(),
121 parameters = $.extend( {}, this.defaults.parameters, parameters );
122 ajaxOptions = $.extend( {}, this.defaults.ajax, ajaxOptions );
124 // Ensure that token parameter is last (per [[mw:API:Edit#Token]]).
125 if ( parameters.token ) {
126 token = parameters.token;
127 delete parameters.token;
129 // Some deployed MediaWiki >= 1.17 forbid periods in URLs, due to an IE XSS bug
130 // So let's escape them here. See bug #28235
131 // This works because jQuery accepts data as a query string or as an Object
132 ajaxOptions.data = $.param( parameters ).replace( /\./g, '%2E' );
134 // If we extracted a token parameter, add it back in.
136 ajaxOptions.data += '&token=' + encodeURIComponent( token );
139 // Backwards compatibility: Before MediaWiki 1.20,
140 // callbacks were done with the 'ok' and 'err' property in ajaxOptions.
141 if ( ajaxOptions.ok ) {
142 apiDeferred.done( ajaxOptions.ok );
143 delete ajaxOptions.ok;
145 if ( ajaxOptions.err ) {
146 apiDeferred.fail( ajaxOptions.err );
147 delete ajaxOptions.err;
150 // Make the AJAX request
151 xhr = $.ajax( ajaxOptions )
152 // If AJAX fails, reject API call with error code 'http'
153 // and details in second argument.
154 .fail( function ( xhr, textStatus, exception ) {
155 apiDeferred.reject( 'http', {
157 textStatus: textStatus,
161 // AJAX success just means "200 OK" response, also check API error codes
162 .done( function ( result ) {
163 if ( result === undefined || result === null || result === '' ) {
164 apiDeferred.reject( 'ok-but-empty',
165 'OK response but empty result (check HTTP headers?)'
167 } else if ( result.error ) {
168 var code = result.error.code === undefined ? 'unknown' : result.error.code;
169 apiDeferred.reject( code, result );
171 apiDeferred.resolve( result );
175 // Return the Promise
176 return apiDeferred.promise( { abort: xhr.abort } ).fail( function ( code, details ) {
177 mw.log( 'mw.Api error: ', code, details );
186 * List of errors we might receive from the API.
187 * For now, this just documents our expectation that there should be similar messages
191 // occurs when POST aborted
192 // jQuery 1.4 can't distinguish abort or lost connection from 200 OK + empty result
198 // really a warning, but we treat it like an error
202 // upload succeeded, but no image info.
203 // this is probably impossible, but might as well check for it
205 // remote errors, defined in API
214 'copyuploaddisabled',
220 'filetype-banned-type',
223 'verification-error',
230 'fileexists-shared-forbidden',
238 * List of warnings we might receive from the API.
239 * For now, this just documents our expectation that there should be similar messages
247 }( mediaWiki, jQuery ) );