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.xhr // ------ // // Tools for sending ajax requests with JSON responses and built in error handling. // Mirrors and wraps jQuery's ajax APIs. wp.xhr = { settings: settings.xhr || {}, /** * wp.xhr.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.xhr.send({ data: _.isObject( action ) ? action : _.extend( data || {}, { action: action }) }); }, /** * wp.xhr.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.xhr.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));