Файл: wordpress/wp-includes/js/customize-loader.js
Строк: 279
/* global _wpCustomizeLoaderSettings, confirm */
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)
});
/**
* Allows the Customizer to be overlayed on any page.
*
* By default, any element in the body with the load-customize class will open
* an iframe overlay with the URL specified.
*
* e.g. <a class="load-customize" href="<?php echo wp_customize_url(); ?>">Open Customizer</a>
*
* @augments wp.customize.Events
*/
Loader = $.extend( {}, api.Events, {
/**
* Setup the Loader; triggered on document#ready.
*/
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 );
// Bind events for opening and closing the overlay.
this.bind( 'open', this.overlay.show );
this.bind( 'close', this.overlay.hide );
// Any element in the body with the `load-customize` class opens
// the Customizer.
$('#wpbody').on( 'click', '.load-customize', function( event ) {
event.preventDefault();
// Store a reference to the link that opened the Customizer.
Loader.link = $(this);
// Load the theme.
Loader.open( Loader.link.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() {
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();
}
},
beforeunload: function () {
if ( ! Loader.saved() ) {
return Loader.settings.l10n.saveAlert;
}
},
/**
* Open the Customizer overlay for a specific URL.
*
* @param string src URL to load in the Customizer.
*/
open: function( src ) {
if ( this.active ) {
return;
}
// Load the full page on mobile devices.
if ( Loader.settings.browser.mobile ) {
return window.location = src;
}
// Store the document title prior to opening the Live Preview
this.originalDocumentTitle = document.title;
this.active = true;
this.body.addClass('customize-loading');
// Dirty state of Customizer in iframe
this.saved = new api.Value( true );
this.iframe = $( '<iframe />', { 'src': src, 'title': Loader.settings.l10n.mainIframeTitle } ).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();
}
});
// Prompt AYS dialog when navigating away
$( window ).on( 'beforeunload', this.beforeunload );
this.messenger.bind( 'activated', function( location ) {
if ( location ) {
window.location = location;
}
});
this.messenger.bind( 'saved', function () {
Loader.saved( true );
} );
this.messenger.bind( 'change', function () {
Loader.saved( false );
} );
this.messenger.bind( 'title', function( newTitle ){
window.document.title = newTitle;
});
this.pushState( src );
this.trigger( 'open' );
},
pushState: function ( src ) {
var 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' );
},
/**
* Callback after the Customizer has been opened.
*/
opened: function() {
Loader.body.addClass( 'customize-active full-overlay-active' );
},
/**
* Close the Customizer overlay and return focus to the link that opened it.
*/
close: function() {
if ( ! this.active ) {
return;
}
// Display AYS dialog if Customizer is dirty
if ( ! this.saved() && ! confirm( Loader.settings.l10n.saveAlert ) ) {
// Go forward since Customizer is exited by history.back()
history.forward();
return;
}
this.active = false;
this.trigger( 'close' );
// Restore document title prior to opening the Live Preview
if ( this.originalDocumentTitle ) {
document.title = this.originalDocumentTitle;
}
// Return focus to link that was originally clicked.
if ( this.link ) {
this.link.focus();
}
},
/**
* Callback after the Customizer has been closed.
*/
closed: function() {
Loader.iframe.remove();
Loader.messenger.destroy();
Loader.iframe = null;
Loader.messenger = null;
Loader.saved = null;
Loader.body.removeClass( 'customize-active full-overlay-active' ).removeClass( 'customize-loading' );
$( window ).off( 'beforeunload', Loader.beforeunload );
},
/**
* Callback for the `load` event on the Customizer iframe.
*/
loaded: function() {
Loader.body.removeClass('customize-loading');
},
/**
* Overlay hide/show utility methods.
*/
overlay: {
show: function() {
this.element.fadeIn( 200, Loader.opened );
},
hide: function() {
this.element.fadeOut( 200, Loader.closed );
}
}
});
// Bootstrap the Loader on document#ready.
$( function() {
Loader.settings = _wpCustomizeLoaderSettings;
Loader.initialize();
});
// Expose the API publicly on window.wp.customize.Loader
api.Loader = Loader;
})( wp, jQuery );