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window.wp = window.wp || {};
(function( exports, $ ){
var api = wp.customize,
Loader;
$.extend( $.support, {
history: !! ( window.history && history.pushState ),
hashchange: ('onhashchange' in window) && (document.documentMode === undefined || document.documentMode > 7)
});
Loader = $.extend( {}, api.Events, {
initialize: function() {
this.body = $( document.body );
// Ensure the loader is supported.
// Check for settings, postMessage support, and whether we require CORS support.
if ( ! Loader.settings || ! $.support.postMessage || ( ! $.support.cors && Loader.settings.isCrossDomain ) ) {
return;
}
this.window = $( window );
this.element = $( '<div id="customize-container" />' ).appendTo( this.body );
this.bind( 'open', this.overlay.show );
this.bind( 'close', this.overlay.hide );
$('#wpbody').on( 'click', '.load-customize', function( event ) {
event.preventDefault();
// Load the theme.
Loader.open( $(this).attr('href') );
});
// Add navigation listeners.
if ( $.support.history )
this.window.on( 'popstate', Loader.popstate );
if ( $.support.hashchange ) {
this.window.on( 'hashchange', Loader.hashchange );
this.window.triggerHandler( 'hashchange' );
}
},
popstate: function( e ) {
var state = e.originalEvent.state;
if ( state && state.customize )
Loader.open( state.customize );
else if ( Loader.active )
Loader.close();
},
hashchange: function( e ) {
var hash = window.location.toString().split('#')[1];
if ( hash && 0 === hash.indexOf( 'wp_customize=on' ) )
Loader.open( Loader.settings.url + '?' + hash );
if ( ! hash && ! $.support.history )
Loader.close();
},
open: function( src ) {
var hash;
if ( this.active )
return;
// Load the full page on mobile devices.
if ( Loader.settings.browser.mobile )
return window.location = src;
this.active = true;
this.body.addClass('customize-loading');
this.iframe = $( '<iframe />', { src: src }).appendTo( this.element );
this.iframe.one( 'load', this.loaded );
// Create a postMessage connection with the iframe.
this.messenger = new api.Messenger({
url: src,
channel: 'loader',
targetWindow: this.iframe[0].contentWindow
});
// Wait for the connection from the iframe before sending any postMessage events.
this.messenger.bind( 'ready', function() {
Loader.messenger.send( 'back' );
});
this.messenger.bind( 'close', function() {
if ( $.support.history )
history.back();
else if ( $.support.hashchange )
window.location.hash = '';
else
Loader.close();
});
this.messenger.bind( 'activated', function( location ) {
if ( location )
window.location = location;
});
hash = src.split('?')[1];
// Ensure we don't call pushState if the user hit the forward button.
if ( $.support.history && window.location.href !== src )
history.pushState( { customize: src }, '', src );
else if ( ! $.support.history && $.support.hashchange && hash )
window.location.hash = 'wp_customize=on&' + hash;
this.trigger( 'open' );
},
opened: function() {
Loader.body.addClass( 'customize-active full-overlay-active' );
},
close: function() {
if ( ! this.active )
return;
this.active = false;
this.trigger( 'close' );
},
closed: function() {
Loader.iframe.remove();
Loader.messenger.destroy();
Loader.iframe = null;
Loader.messenger = null;
Loader.body.removeClass( 'customize-active full-overlay-active' ).removeClass( 'customize-loading' );
},
loaded: function() {
Loader.body.removeClass('customize-loading');
},
overlay: {
show: function() {
this.element.fadeIn( 200, Loader.opened );
},
hide: function() {
this.element.fadeOut( 200, Loader.closed );
}
}
});
$( function() {
Loader.settings = _wpCustomizeLoaderSettings;
Loader.initialize();
});
// Expose the API to the world.
api.Loader = Loader;
})( wp, jQuery );
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