As the sun rises and the forest mist clears, and the clouds return and the caves darken, these changes of light and shadow are the morning and evening in the mountains. Wildflowers bloom with their subtle fragrance, fine trees flourish with their dense shade, the wind and frost are pure and clean, and the water recedes to reveal the rocks—these are the four seasons in the mountains. Going out in the morning and returning in the evening, the scenery of the four seasons is different, and the joy is endless.至于负者歌于途,行者休于树,前者呼,后者应,伛偻提携,往来而不绝者,滁人游也。临溪而渔,溪深而鱼肥,酿泉为酒,泉香而酒洌,山肴野蔌,杂然而前陈者,太守宴也。宴酣之乐,非丝非竹,射者中,弈者胜,觥筹交错,起坐而喧哗者,众宾欢也。苍颜白发,颓然乎其间者,太守醉也。
/**
* @output wp-includes/js/customize-loader.js
*/
/* global _wpCustomizeLoaderSettings */
/**
* Expose a public API that allows the customizer to be
* loaded on any page.
*
* @namespace wp
*/
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 overlaid 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>
*
* @memberOf wp.customize
*
* @class
* @augments wp.customize.Events
*/
Loader = $.extend( {}, api.Events,/** @lends wp.customize.Loader.prototype */{
/**
* 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');
/*
* Track the dirtiness state (whether the drafted changes have been published)
* of the Customizer in the iframe. This is used to decide whether to display
* an AYS alert if the user tries to close the window before saving changes.
*/
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
});
// Expose the changeset UUID on the parent window's URL so that the customized state can survive a refresh.
if ( history.replaceState ) {
this.messenger.bind( 'changeset-uuid', function( changesetUuid ) {
var urlParser = document.createElement( 'a' );
urlParser.href = location.href;
urlParser.search = $.param( _.extend(
api.utils.parseQueryString( urlParser.search.substr( 1 ) ),
{ changeset_uuid: changesetUuid }
) );
history.replaceState( { customize: urlParser.href }, '', urlParser.href );
} );
}
// 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( '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' ).attr( 'aria-busy', 'true' );
},
/**
* Close the Customizer overlay.
*/
close: function() {
var self = this, onConfirmClose;
if ( ! self.active ) {
return;
}
onConfirmClose = function( confirmed ) {
if ( confirmed ) {
self.active = false;
self.trigger( 'close' );
// Restore document title prior to opening the Live Preview.
if ( self.originalDocumentTitle ) {
document.title = self.originalDocumentTitle;
}
} else {
// Go forward since Customizer is exited by history.back().
history.forward();
}
self.messenger.unbind( 'confirmed-close', onConfirmClose );
};
self.messenger.bind( 'confirmed-close', onConfirmClose );
Loader.messenger.send( 'confirm-close' );
},
/**
* 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 );
/*
* Return focus to the link that opened the Customizer overlay after
* the body element visibility is restored.
*/
if ( Loader.link ) {
Loader.link.focus();
}
},
/**
* Callback for the `load` event on the Customizer iframe.
*/
loaded: function() {
Loader.body.removeClass( 'customize-loading' ).attr( 'aria-busy', 'false' );
},
/**
* 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 );