X-Git-Url: https://scripts.mit.edu/gitweb/autoinstalls/wordpress.git/blobdiff_plain/849f15aeed7a5e39314057bdc0064d8edd60dd7d..d3947bc013df7edd54b46deed8230d2eeafc5ecb:/wp-includes/js/customize-base.js diff --git a/wp-includes/js/customize-base.js b/wp-includes/js/customize-base.js index 5ffa9245..b4b72795 100644 --- a/wp-includes/js/customize-base.js +++ b/wp-includes/js/customize-base.js @@ -74,6 +74,14 @@ window.wp = window.wp || {}; } magic = this; + + /* + * If the class has a method called "instance", + * the return value from the class' constructor will be a function that + * calls the "instance" method. + * + * It is also an object that has properties and methods inside it. + */ if ( this.instance ) { magic = function() { return magic.instance.apply( magic, arguments ); @@ -101,6 +109,11 @@ window.wp = window.wp || {}; api.Class.applicator = {}; + /** + * Initialize a class instance. + * + * Override this function in a subclass as needed. + */ api.Class.prototype.initialize = function() {}; /* @@ -155,6 +168,10 @@ window.wp = window.wp || {}; * @constuctor */ api.Value = api.Class.extend({ + /** + * @param {mixed} initial The initial value. + * @param {object} options + */ initialize: function( initial, options ) { this._value = initial; // @todo: potentially change this to a this.set() call. this.callbacks = $.Callbacks(); @@ -173,10 +190,20 @@ window.wp = window.wp || {}; return arguments.length ? this.set.apply( this, arguments ) : this.get(); }, + /** + * Get the value. + * + * @return {mixed} + */ get: function() { return this._value; }, + /** + * Set the value and trigger all bound callbacks. + * + * @param {object} to New value. + */ set: function( to ) { var from = this._value; @@ -219,11 +246,21 @@ window.wp = window.wp || {}; return value; }, + /** + * Bind a function to be invoked whenever the value changes. + * + * @param {...Function} A function, or multiple functions, to add to the callback stack. + */ bind: function() { this.callbacks.add.apply( this.callbacks, arguments ); return this; }, + /** + * Unbind a previously bound function. + * + * @param {...Function} A function, or multiple functions, to remove from the callback stack. + */ unbind: function() { this.callbacks.remove.apply( this.callbacks, arguments ); return this; @@ -272,6 +309,12 @@ window.wp = window.wp || {}; * @mixes wp.customize.Events */ api.Values = api.Class.extend({ + + /** + * The default constructor for items of the collection. + * + * @type {object} + */ defaultConstructor: api.Value, initialize: function( options ) { @@ -281,6 +324,21 @@ window.wp = window.wp || {}; this._deferreds = {}; }, + /** + * Get the instance of an item from the collection if only ID is specified. + * + * If more than one argument is supplied, all are expected to be IDs and + * the last to be a function callback that will be invoked when the requested + * items are available. + * + * @see {api.Values.when} + * + * @param {string} id ID of the item. + * @param {...} Zero or more IDs of items to wait for and a callback + * function to invoke when they're available. Optional. + * @return {mixed} The item instance if only one ID was supplied. + * A Deferred Promise object if a callback function is supplied. + */ instance: function( id ) { if ( arguments.length === 1 ) return this.value( id ); @@ -288,35 +346,72 @@ window.wp = window.wp || {}; return this.when.apply( this, arguments ); }, + /** + * Get the instance of an item. + * + * @param {string} id The ID of the item. + * @return {[type]} [description] + */ value: function( id ) { return this._value[ id ]; }, + /** + * Whether the collection has an item with the given ID. + * + * @param {string} id The ID of the item to look for. + * @return {Boolean} + */ has: function( id ) { return typeof this._value[ id ] !== 'undefined'; }, + /** + * Add an item to the collection. + * + * @param {string} id The ID of the item. + * @param {mixed} value The item instance. + * @return {mixed} The new item's instance. + */ add: function( id, value ) { if ( this.has( id ) ) return this.value( id ); this._value[ id ] = value; value.parent = this; + + // Propagate a 'change' event on an item up to the collection. if ( value.extended( api.Value ) ) value.bind( this._change ); this.trigger( 'add', value ); + // If a deferred object exists for this item, + // resolve it. if ( this._deferreds[ id ] ) this._deferreds[ id ].resolve(); return this._value[ id ]; }, + /** + * Create a new item of the collection using the collection's default constructor + * and store it in the collection. + * + * @param {string} id The ID of the item. + * @param {mixed} value Any extra arguments are passed into the item's initialize method. + * @return {mixed} The new item's instance. + */ create: function( id ) { return this.add( id, new this.defaultConstructor( api.Class.applicator, slice.call( arguments, 1 ) ) ); }, + /** + * Iterate over all items in the collection invoking the provided callback. + * + * @param {Function} callback Function to invoke. + * @param {object} context Object context to invoke the function with. Optional. + */ each: function( callback, context ) { context = typeof context === 'undefined' ? this : context; @@ -325,6 +420,11 @@ window.wp = window.wp || {}; }); }, + /** + * Remove an item from the collection. + * + * @param {string} id The ID of the item to remove. + */ remove: function( id ) { var value; @@ -359,10 +459,18 @@ window.wp = window.wp || {}; if ( $.isFunction( ids[ ids.length - 1 ] ) ) dfd.done( ids.pop() ); + /* + * Create a stack of deferred objects for each item that is not + * yet available, and invoke the supplied callback when they are. + */ $.when.apply( $, $.map( ids, function( id ) { if ( self.has( id ) ) return; + /* + * The requested item is not available yet, create a deferred + * object to resolve when it becomes available. + */ return self._deferreds[ id ] = self._deferreds[ id ] || $.Deferred(); })).done( function() { var values = $.map( ids, function( id ) { @@ -385,11 +493,16 @@ window.wp = window.wp || {}; return dfd.promise(); }, + /** + * A helper function to propagate a 'change' event from an item + * to the collection itself. + */ _change: function() { this.parent.trigger( 'change', this ); } }); + // Create a global events bus on the Customizer. $.extend( api.Values.prototype, api.Events ); @@ -502,7 +615,7 @@ window.wp = window.wp || {}; $.support.postMessage = !! window.postMessage; /** - * Messenger for postMessage. + * A communicator for sending data from one window to another over postMessage. * * @constuctor * @augments wp.customize.Class @@ -538,11 +651,34 @@ window.wp = window.wp || {}; this.add( 'channel', params.channel ); this.add( 'url', params.url || '' ); - this.add( 'targetWindow', params.targetWindow || defaultTarget ); this.add( 'origin', this.url() ).link( this.url ).setter( function( to ) { return to.replace( /([^:]+:\/\/[^\/]+).*/, '$1' ); }); + // first add with no value + this.add( 'targetWindow', null ); + // This avoids SecurityErrors when setting a window object in x-origin iframe'd scenarios. + this.targetWindow.set = function( to ) { + var from = this._value; + + to = this._setter.apply( this, arguments ); + to = this.validate( to ); + + if ( null === to || from === to ) { + return this; + } + + this._value = to; + this._dirty = true; + + this.callbacks.fireWith( this, [ to, from ] ); + + return this; + }; + // now set it + this.targetWindow( params.targetWindow || defaultTarget ); + + // Since we want jQuery to treat the receive function as unique // to this instance, we give the function a new guid. // @@ -558,13 +694,19 @@ window.wp = window.wp || {}; $( window ).off( 'message', this.receive ); }, + /** + * Receive data from the other window. + * + * @param {jQuery.Event} event Event with embedded data. + */ receive: function( event ) { var message; event = event.originalEvent; - if ( ! this.targetWindow() ) + if ( ! this.targetWindow || ! this.targetWindow() ) { return; + } // Check to make sure the origin is valid. if ( this.origin() && event.origin !== this.origin() ) @@ -588,6 +730,12 @@ window.wp = window.wp || {}; this.trigger( message.id, message.data ); }, + /** + * Send data to the other window. + * + * @param {string} id The event name. + * @param {object} data Data. + */ send: function( id, data ) { var message; @@ -607,8 +755,14 @@ window.wp = window.wp || {}; // Add the Events mixin to api.Messenger. $.extend( api.Messenger.prototype, api.Events ); - // Core customize object. + // The main API object is also a collection of all customizer settings. api = $.extend( new api.Values(), api ); + + /** + * Get all customize settings. + * + * @return {object} + */ api.get = function() { var result = {};