WordPress/wp-includes/js/customize-preview-nav-menus.js

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/* global JSON, _wpCustomizePreviewNavMenusExports */
( function( $, _, wp ) {
'use strict';
if ( ! wp || ! wp.customize ) { return; }
var api = wp.customize,
currentRefreshDebounced = {},
refreshDebounceDelay = 200,
settings = {},
defaultSettings = {
renderQueryVar: null,
renderNonceValue: null,
renderNoncePostKey: null,
previewCustomizeNonce: null,
requestUri: '/',
theme: {
active: false,
stylesheet: ''
},
navMenuInstanceArgs: {}
};
api.MenusCustomizerPreview = {
/**
* Bootstrap functionality.
*/
init : function() {
var self = this, initializedSettings = {};
settings = _.extend( {}, defaultSettings );
if ( 'undefined' !== typeof _wpCustomizePreviewNavMenusExports ) {
_.extend( settings, _wpCustomizePreviewNavMenusExports );
}
api.each( function( setting, id ) {
setting.id = id;
initializedSettings[ setting.id ] = true;
self.bindListener( setting );
} );
api.preview.bind( 'setting', function( args ) {
var id, value, setting;
args = args.slice();
id = args.shift();
value = args.shift();
setting = api( id );
if ( ! setting ) {
// Currently customize-preview.js is not creating settings for dynamically-created settings in the pane, so we have to do it.
setting = api.create( id, value ); // @todo This should be in core
}
if ( ! setting.id ) {
// Currently customize-preview.js doesn't set the id property for each setting, like customize-controls.js does.
setting.id = id;
}
if ( ! initializedSettings[ setting.id ] ) {
initializedSettings[ setting.id ] = true;
if ( self.bindListener( setting ) ) {
setting.callbacks.fireWith( setting, [ setting(), null ] );
}
}
} );
},
/**
*
* @param {wp.customize.Value} setting
* @returns {boolean} Whether the setting was bound.
*/
bindListener : function( setting ) {
var matches, themeLocation;
matches = setting.id.match( /^nav_menu\[(-?\d+)]$/ );
if ( matches ) {
setting.navMenuId = parseInt( matches[1], 10 );
setting.bind( this.onChangeNavMenuSetting );
return true;
}
matches = setting.id.match( /^nav_menu_item\[(-?\d+)]$/ );
if ( matches ) {
setting.navMenuItemId = parseInt( matches[1], 10 );
setting.bind( this.onChangeNavMenuItemSetting );
return true;
}
matches = setting.id.match( /^nav_menu_locations\[(.+?)]/ );
if ( matches ) {
themeLocation = matches[1];
setting.bind( _.bind( function() {
this.refreshMenuLocation( themeLocation );
}, this ) );
return true;
}
return false;
},
/**
* Handle changing of a nav_menu setting.
*
* @this {wp.customize.Setting}
*/
onChangeNavMenuSetting : function() {
var setting = this;
if ( ! setting.navMenuId ) {
throw new Error( 'Expected navMenuId property to be set.' );
}
api.MenusCustomizerPreview.refreshMenu( setting.navMenuId );
},
/**
* Handle changing of a nav_menu_item setting.
*
* @this {wp.customize.Setting}
* @param {object} to
* @param {object} from
*/
onChangeNavMenuItemSetting : function( to, from ) {
if ( from && from.nav_menu_term_id && ( ! to || from.nav_menu_term_id !== to.nav_menu_term_id ) ) {
api.MenusCustomizerPreview.refreshMenu( from.nav_menu_term_id );
}
if ( to && to.nav_menu_term_id ) {
api.MenusCustomizerPreview.refreshMenu( to.nav_menu_term_id );
}
},
/**
* Update a given menu rendered in the preview.
*
* @param {int} menuId
*/
refreshMenu : function( menuId ) {
var assignedLocations = [];
api.each(function( setting, id ) {
var matches = id.match( /^nav_menu_locations\[(.+?)]/ );
if ( matches && menuId === setting() ) {
assignedLocations.push( matches[1] );
}
});
_.each( settings.navMenuInstanceArgs, function( navMenuArgs, instanceNumber ) {
if ( menuId === navMenuArgs.menu || -1 !== _.indexOf( assignedLocations, navMenuArgs.theme_location ) ) {
this.refreshMenuInstanceDebounced( instanceNumber );
}
}, this );
},
/**
* Refresh the menu(s) associated with a given nav menu location.
*
* @param {string} location
*/
refreshMenuLocation : function( location ) {
var foundInstance = false;
_.each( settings.navMenuInstanceArgs, function( navMenuArgs, instanceNumber ) {
if ( location === navMenuArgs.theme_location ) {
this.refreshMenuInstanceDebounced( instanceNumber );
foundInstance = true;
}
}, this );
if ( ! foundInstance ) {
api.preview.send( 'refresh' );
}
},
/**
* Update a specific instance of a given menu on the page.
*
* @param {int} instanceNumber
*/
refreshMenuInstance : function( instanceNumber ) {
var data, menuId, customized, container, request, wpNavMenuArgs, instance, containerInstanceClassName;
if ( ! settings.navMenuInstanceArgs[ instanceNumber ] ) {
throw new Error( 'unknown_instance_number' );
}
instance = settings.navMenuInstanceArgs[ instanceNumber ];
containerInstanceClassName = 'partial-refreshable-nav-menu-' + String( instanceNumber );
container = $( '.' + containerInstanceClassName );
if ( _.isNumber( instance.menu ) ) {
menuId = instance.menu;
} else if ( instance.theme_location && api.has( 'nav_menu_locations[' + instance.theme_location + ']' ) ) {
menuId = api( 'nav_menu_locations[' + instance.theme_location + ']' ).get();
}
if ( ! menuId || ! instance.can_partial_refresh || 0 === container.length ) {
api.preview.send( 'refresh' );
return;
}
menuId = parseInt( menuId, 10 );
data = {
nonce: settings.previewCustomizeNonce, // for Customize Preview
wp_customize: 'on'
};
if ( ! settings.theme.active ) {
data.theme = settings.theme.stylesheet;
}
data[ settings.renderQueryVar ] = '1';
// Gather settings to send in partial refresh request.
customized = {};
api.each( function( setting, id ) {
var value = setting.get(), shouldSend = false;
// @todo Core should propagate the dirty state into the Preview as well so we can use that here.
// Send setting if it is a nav_menu_locations[] setting.
shouldSend = shouldSend || /^nav_menu_locations\[/.test( id );
// Send setting if it is the setting for this menu.
shouldSend = shouldSend || id === 'nav_menu[' + String( menuId ) + ']';
// Send setting if it is one that is associated with this menu, or it is deleted.
shouldSend = shouldSend || ( /^nav_menu_item\[/.test( id ) && ( false === value || menuId === value.nav_menu_term_id ) );
if ( shouldSend ) {
customized[ id ] = value;
}
} );
data.customized = JSON.stringify( customized );
data[ settings.renderNoncePostKey ] = settings.renderNonceValue;
wpNavMenuArgs = $.extend( {}, instance );
data.wp_nav_menu_args_hash = wpNavMenuArgs.args_hash;
delete wpNavMenuArgs.args_hash;
data.wp_nav_menu_args = JSON.stringify( wpNavMenuArgs );
container.addClass( 'customize-partial-refreshing' );
request = wp.ajax.send( null, {
data: data,
url: settings.requestUri
} );
request.done( function( data ) {
// If the menu is now not visible, refresh since the page layout may have changed.
if ( false === data ) {
api.preview.send( 'refresh' );
return;
}
var eventParam, previousContainer = container;
container = $( data );
container.addClass( containerInstanceClassName );
container.addClass( 'partial-refreshable-nav-menu customize-partial-refreshing' );
previousContainer.replaceWith( container );
eventParam = {
instanceNumber: instanceNumber,
wpNavArgs: wpNavMenuArgs, // @deprecated
wpNavMenuArgs: wpNavMenuArgs,
oldContainer: previousContainer,
newContainer: container
};
container.removeClass( 'customize-partial-refreshing' );
$( document ).trigger( 'customize-preview-menu-refreshed', [ eventParam ] );
} );
},
refreshMenuInstanceDebounced : function( instanceNumber ) {
if ( currentRefreshDebounced[ instanceNumber ] ) {
clearTimeout( currentRefreshDebounced[ instanceNumber ] );
}
currentRefreshDebounced[ instanceNumber ] = setTimeout(
_.bind( function() {
this.refreshMenuInstance( instanceNumber );
}, this ),
refreshDebounceDelay
);
}
};
api.bind( 'preview-ready', function() {
api.preview.bind( 'active', function() {
api.MenusCustomizerPreview.init();
} );
} );
}( jQuery, _, wp ) );