155 lines
3.8 KiB
JavaScript
155 lines
3.8 KiB
JavaScript
(function( exports, $ ){
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var api = wp.customize,
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debounce;
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/**
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* Returns a debounced version of the function.
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*
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* @todo Require Underscore.js for this file and retire this.
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*/
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debounce = function( fn, delay, context ) {
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var timeout;
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return function() {
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var args = arguments;
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context = context || this;
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clearTimeout( timeout );
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timeout = setTimeout( function() {
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timeout = null;
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fn.apply( context, args );
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}, delay );
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};
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};
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/**
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* @constructor
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* @augments wp.customize.Messenger
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* @augments wp.customize.Class
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* @mixes wp.customize.Events
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*/
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api.Preview = api.Messenger.extend({
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/**
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* Requires params:
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* - url - the URL of preview frame
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*/
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initialize: function( params, options ) {
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var self = this;
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api.Messenger.prototype.initialize.call( this, params, options );
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this.body = $( document.body );
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this.body.on( 'click.preview', 'a', function( event ) {
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event.preventDefault();
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self.send( 'scroll', 0 );
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self.send( 'url', $(this).prop('href') );
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});
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// You cannot submit forms.
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// @todo: Allow form submissions by mixing $_POST data with the customize setting $_POST data.
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this.body.on( 'submit.preview', 'form', function( event ) {
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event.preventDefault();
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});
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this.window = $( window );
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this.window.on( 'scroll.preview', debounce( function() {
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self.send( 'scroll', self.window.scrollTop() );
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}, 200 ));
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this.bind( 'scroll', function( distance ) {
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self.window.scrollTop( distance );
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});
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}
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});
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$( function() {
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api.settings = window._wpCustomizeSettings;
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if ( ! api.settings )
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return;
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var preview, bg;
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preview = new api.Preview({
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url: window.location.href,
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channel: api.settings.channel
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});
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preview.bind( 'settings', function( values ) {
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$.each( values, function( id, value ) {
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if ( api.has( id ) )
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api( id ).set( value );
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else
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api.create( id, value );
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});
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});
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preview.trigger( 'settings', api.settings.values );
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preview.bind( 'setting', function( args ) {
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var value;
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args = args.slice();
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if ( value = api( args.shift() ) )
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value.set.apply( value, args );
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});
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preview.bind( 'sync', function( events ) {
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$.each( events, function( event, args ) {
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preview.trigger( event, args );
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});
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preview.send( 'synced' );
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});
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preview.bind( 'active', function() {
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if ( api.settings.nonce )
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preview.send( 'nonce', api.settings.nonce );
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});
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preview.send( 'ready', {
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activeControls: api.settings.activeControls
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} );
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/* Custom Backgrounds */
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bg = $.map(['color', 'image', 'position_x', 'repeat', 'attachment'], function( prop ) {
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return 'background_' + prop;
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});
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api.when.apply( api, bg ).done( function( color, image, position_x, repeat, attachment ) {
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var body = $(document.body),
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head = $('head'),
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style = $('#custom-background-css'),
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update;
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update = function() {
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var css = '';
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// The body will support custom backgrounds if either
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// the color or image are set.
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//
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// See get_body_class() in /wp-includes/post-template.php
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body.toggleClass( 'custom-background', !! ( color() || image() ) );
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if ( color() )
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css += 'background-color: ' + color() + ';';
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if ( image() ) {
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css += 'background-image: url("' + image() + '");';
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css += 'background-position: top ' + position_x() + ';';
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css += 'background-repeat: ' + repeat() + ';';
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css += 'background-attachment: ' + attachment() + ';';
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}
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// Refresh the stylesheet by removing and recreating it.
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style.remove();
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style = $('<style type="text/css" id="custom-background-css">body.custom-background { ' + css + ' }</style>').appendTo( head );
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};
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$.each( arguments, function() {
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this.bind( update );
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});
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});
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});
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})( wp, jQuery );
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