WordPress 3.4

[autoinstalls/wordpress.git] / wp-includes / js / customize-preview.dev.js

diff --git a/wp-includes/js/customize-preview.dev.js b/wp-includes/js/customize-preview.dev.js
new file mode 100644 (file)
index 0000000..28af66b
--- /dev/null
+++ b/wp-includes/js/customize-preview.dev.js
@@ -0,0 +1,141 @@
+(function( exports, $ ){
+       var api = wp.customize,
+               debounce;
+
+       debounce = function( fn, delay, context ) {
+               var timeout;
+               return function() {
+                       var args = arguments;
+
+                       context = context || this;
+
+                       clearTimeout( timeout );
+                       timeout = setTimeout( function() {
+                               timeout = null;
+                               fn.apply( context, args );
+                       }, delay );
+               };
+       };
+
+       api.Preview = api.Messenger.extend({
+               /**
+                * Requires params:
+                *  - url    - the URL of preview frame
+                */
+               initialize: function( params, options ) {
+                       var self = this;
+
+                       api.Messenger.prototype.initialize.call( this, params, options );
+
+                       this.body = $( document.body );
+                       this.body.on( 'click.preview', 'a', function( event ) {
+                               event.preventDefault();
+                               self.send( 'scroll', 0 );
+                               self.send( 'url', $(this).prop('href') );
+                       });
+
+                       // You cannot submit forms.
+                       // @todo: Allow form submissions by mixing $_POST data with the customize setting $_POST data.
+                       this.body.on( 'submit.preview', 'form', function( event ) {
+                               event.preventDefault();
+                       });
+
+                       this.window = $( window );
+                       this.window.on( 'scroll.preview', debounce( function() {
+                               self.send( 'scroll', self.window.scrollTop() );
+                       }, 200 ));
+
+                       this.bind( 'scroll', function( distance ) {
+                               self.window.scrollTop( distance );
+                       });
+               }
+       });
+
+       $( function() {
+               api.settings = window._wpCustomizeSettings;
+               if ( ! api.settings )
+                       return;
+
+               var preview, bg;
+
+               preview = new api.Preview({
+                       url: window.location.href,
+                       channel: api.settings.channel
+               });
+
+               preview.bind( 'settings', function( values ) {
+                       $.each( values, function( id, value ) {
+                               if ( api.has( id ) )
+                                       api( id ).set( value );
+                               else
+                                       api.create( id, value );
+                       });
+               });
+
+               preview.trigger( 'settings', api.settings.values );
+
+               preview.bind( 'setting', function( args ) {
+                       var value;
+
+                       args = args.slice();
+
+                       if ( value = api( args.shift() ) )
+                               value.set.apply( value, args );
+               });
+
+               preview.bind( 'sync', function( events ) {
+                       $.each( events, function( event, args ) {
+                               preview.trigger( event, args );
+                       });
+                       preview.send( 'synced' );
+               })
+
+               preview.send( 'ready' );
+
+               /* Custom Backgrounds */
+               bg = $.map(['color', 'image', 'position_x', 'repeat', 'attachment'], function( prop ) {
+                       return 'background_' + prop;
+               });
+
+               api.when.apply( api, bg ).done( function( color, image, position_x, repeat, attachment ) {
+                       var body = $(document.body),
+                               head = $('head'),
+                               style = $('#custom-background-css'),
+                               update;
+
+                       // If custom backgrounds are active and we can't find the
+                       // default output, bail.
+                       if ( body.hasClass('custom-background') && ! style.length )
+                               return;
+
+                       update = function() {
+                               var css = '';
+
+                               // The body will support custom backgrounds if either
+                               // the color or image are set.
+                               //
+                               // See get_body_class() in /wp-includes/post-template.php
+                               body.toggleClass( 'custom-background', !! ( color() || image() ) );
+
+                               if ( color() )
+                                       css += 'background-color: ' + color() + ';';
+
+                               if ( image() ) {
+                                       css += 'background-image: url("' + image() + '");';
+                                       css += 'background-position: top ' + position_x() + ';';
+                                       css += 'background-repeat: ' + repeat() + ';';
+                                       css += 'background-position: top ' + attachment() + ';';
+                               }
+
+                               // Refresh the stylesheet by removing and recreating it.
+                               style.remove();
+                               style = $('<style type="text/css" id="custom-background-css">body.custom-background { ' + css + ' }</style>').appendTo( head );
+                       };
+
+                       $.each( arguments, function() {
+                               this.bind( update );
+                       });
+               });
+       });
+
+})( wp, jQuery );