1 files changed, 105 insertions, 0 deletions
diff --git a/src/wp-includes/js/wp-util.js b/src/wp-includes/js/wp-util.js
new file mode 100644
index 0000000000..701ec3ea43
--- /dev/null
+++ b/src/wp-includes/js/wp-util.js
@@ -0,0 +1,105 @@
+window.wp = window.wp || {};
+
+(function ($) {
+	// Check for the utility settings.
+	var settings = typeof _wpUtilSettings === 'undefined' ? {} : _wpUtilSettings;
+
+	/**
+	 * wp.template( id )
+	 *
+	 * Fetches a template by id.
+	 *
+	 * @param  {string} id   A string that corresponds to a DOM element with an id prefixed with "tmpl-".
+	 *                       For example, "attachment" maps to "tmpl-attachment".
+	 * @return {function}    A function that lazily-compiles the template requested.
+	 */
+	wp.template = _.memoize(function ( id ) {
+		var compiled,
+			options = {
+				evaluate:    /<#([\s\S]+?)#>/g,
+				interpolate: /\{\{\{([\s\S]+?)\}\}\}/g,
+				escape:      /\{\{([^\}]+?)\}\}(?!\})/g,
+				variable:    'data'
+			};
+
+		return function ( data ) {
+			compiled = compiled || _.template( $( '#tmpl-' + id ).html(), null, options );
+			return compiled( data );
+		};
+	});
+
+	// wp.ajax
+	// ------
+	//
+	// Tools for sending ajax requests with JSON responses and built in error handling.
+	// Mirrors and wraps jQuery's ajax APIs.
+	wp.ajax = {
+		settings: settings.ajax || {},
+
+		/**
+		 * wp.ajax.post( [action], [data] )
+		 *
+		 * Sends a POST request to WordPress.
+		 *
+		 * @param  {string} action The slug of the action to fire in WordPress.
+		 * @param  {object} data   The data to populate $_POST with.
+		 * @return {$.promise}     A jQuery promise that represents the request.
+		 */
+		post: function( action, data ) {
+			return wp.ajax.send({
+				data: _.isObject( action ) ? action : _.extend( data || {}, { action: action })
+			});
+		},
+
+		/**
+		 * wp.ajax.send( [action], [options] )
+		 *
+		 * Sends a POST request to WordPress.
+		 *
+		 * @param  {string} action  The slug of the action to fire in WordPress.
+		 * @param  {object} options The options passed to jQuery.ajax.
+		 * @return {$.promise}      A jQuery promise that represents the request.
+		 */
+		send: function( action, options ) {
+			if ( _.isObject( action ) ) {
+				options = action;
+			} else {
+				options = options || {};
+				options.data = _.extend( options.data || {}, { action: action });
+			}
+
+			options = _.defaults( options || {}, {
+				type:    'POST',
+				url:     wp.ajax.settings.url,
+				context: this
+			});
+
+			return $.Deferred( function( deferred ) {
+				// Transfer success/error callbacks.
+				if ( options.success )
+					deferred.done( options.success );
+				if ( options.error )
+					deferred.fail( options.error );
+
+				delete options.success;
+				delete options.error;
+
+				// Use with PHP's wp_send_json_success() and wp_send_json_error()
+				$.ajax( options ).done( function( response ) {
+					// Treat a response of `1` as successful for backwards
+					// compatibility with existing handlers.
+					if ( response === '1' || response === 1 )
+						response = { success: true };
+
+					if ( _.isObject( response ) && ! _.isUndefined( response.success ) )
+						deferred[ response.success ? 'resolveWith' : 'rejectWith' ]( this, [response.data] );
+					else
+						deferred.rejectWith( this, [response] );
+				}).fail( function() {
+					deferred.rejectWith( this, arguments );
+				});
+			}).promise();
+		}
+	};
+
+}(jQuery));