WordPress/wp-includes/js/customize-selective-refresh.js
Weston Ruter 1c2324f834 Customize: Update server-sent setting validation notifications as changes are entered.
Send back setting validities with full refreshes and selective refreshes so that invalid settings can have notifications displayed immediately before attempting save, and so that these notifications can be cleared as soon as the input is corrected.

* Splits out JS logic for listing controls into separate methods  `wp.customize.Setting.prototype.findControls()` and `wp.customize.findControlsForSettings()`.
* Adds a `setting` property to the `data` on notifications added to controls that are synced from their settings.
* Adds `selective-refresh-setting-validities` message sent from preview to pane.
* Changes `WP_Customize_Manager::validate_setting_values()` to return when settings are valid as well as invalid.
* Adds `WP_Customize_Manager::prepare_setting_validity_for_js()`.
* Add setting validities to data exported to JS in Customizer Preview and in selective refresh responses.

Fixes #36944.

Built from https://develop.svn.wordpress.org/trunk@37700


git-svn-id: http://core.svn.wordpress.org/trunk@37666 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-06-14 19:17:28 +00:00

879 lines
26 KiB
JavaScript

/* global jQuery, JSON, _customizePartialRefreshExports, console */
wp.customize.selectiveRefresh = ( function( $, api ) {
'use strict';
var self, Partial, Placement;
self = {
ready: $.Deferred(),
data: {
partials: {},
renderQueryVar: '',
l10n: {
shiftClickToEdit: ''
},
refreshBuffer: 250
},
currentRequest: null
};
_.extend( self, api.Events );
/**
* A Customizer Partial.
*
* A partial provides a rendering of one or more settings according to a template.
*
* @see PHP class WP_Customize_Partial.
*
* @class
* @augments wp.customize.Class
* @since 4.5.0
*
* @param {string} id Unique identifier for the control instance.
* @param {object} options Options hash for the control instance.
* @param {object} options.params
* @param {string} options.params.type Type of partial (e.g. nav_menu, widget, etc)
* @param {string} options.params.selector jQuery selector to find the container element in the page.
* @param {array} options.params.settings The IDs for the settings the partial relates to.
* @param {string} options.params.primarySetting The ID for the primary setting the partial renders.
* @param {bool} options.params.fallbackRefresh Whether to refresh the entire preview in case of a partial refresh failure.
*/
Partial = self.Partial = api.Class.extend({
id: null,
/**
* Constructor.
*
* @since 4.5.0
*
* @param {string} id - Partial ID.
* @param {Object} options
* @param {Object} options.params
*/
initialize: function( id, options ) {
var partial = this;
options = options || {};
partial.id = id;
partial.params = _.extend(
{
selector: null,
settings: [],
primarySetting: null,
containerInclusive: false,
fallbackRefresh: true // Note this needs to be false in a front-end editing context.
},
options.params || {}
);
partial.deferred = {};
partial.deferred.ready = $.Deferred();
partial.deferred.ready.done( function() {
partial.ready();
} );
},
/**
* Set up the partial.
*
* @since 4.5.0
*/
ready: function() {
var partial = this;
_.each( _.pluck( partial.placements(), 'container' ), function( container ) {
$( container ).attr( 'title', self.data.l10n.shiftClickToEdit );
} );
$( document ).on( 'click', partial.params.selector, function( e ) {
if ( ! e.shiftKey ) {
return;
}
e.preventDefault();
_.each( partial.placements(), function( placement ) {
if ( $( placement.container ).is( e.currentTarget ) ) {
partial.showControl();
}
} );
} );
},
/**
* Find all placements for this partial int he document.
*
* @since 4.5.0
*
* @return {Array.<Placement>}
*/
placements: function() {
var partial = this, selector;
selector = partial.params.selector || '';
if ( selector ) {
selector += ', ';
}
selector += '[data-customize-partial-id="' + partial.id + '"]'; // @todo Consider injecting customize-partial-id-${id} classnames instead.
return $( selector ).map( function() {
var container = $( this ), context;
context = container.data( 'customize-partial-placement-context' );
if ( _.isString( context ) && '{' === context.substr( 0, 1 ) ) {
throw new Error( 'context JSON parse error' );
}
return new Placement( {
partial: partial,
container: container,
context: context
} );
} ).get();
},
/**
* Get list of setting IDs related to this partial.
*
* @since 4.5.0
*
* @return {String[]}
*/
settings: function() {
var partial = this;
if ( partial.params.settings && 0 !== partial.params.settings.length ) {
return partial.params.settings;
} else if ( partial.params.primarySetting ) {
return [ partial.params.primarySetting ];
} else {
return [ partial.id ];
}
},
/**
* Return whether the setting is related to the partial.
*
* @since 4.5.0
*
* @param {wp.customize.Value|string} setting ID or object for setting.
* @return {boolean} Whether the setting is related to the partial.
*/
isRelatedSetting: function( setting /*... newValue, oldValue */ ) {
var partial = this;
if ( _.isString( setting ) ) {
setting = api( setting );
}
if ( ! setting ) {
return false;
}
return -1 !== _.indexOf( partial.settings(), setting.id );
},
/**
* Show the control to modify this partial's setting(s).
*
* This may be overridden for inline editing.
*
* @since 4.5.0
*/
showControl: function() {
var partial = this, settingId = partial.params.primarySetting;
if ( ! settingId ) {
settingId = _.first( partial.settings() );
}
api.preview.send( 'focus-control-for-setting', settingId );
},
/**
* Prepare container for selective refresh.
*
* @since 4.5.0
*
* @param {Placement} placement
*/
preparePlacement: function( placement ) {
$( placement.container ).addClass( 'customize-partial-refreshing' );
},
/**
* Reference to the pending promise returned from self.requestPartial().
*
* @since 4.5.0
* @private
*/
_pendingRefreshPromise: null,
/**
* Request the new partial and render it into the placements.
*
* @since 4.5.0
*
* @this {wp.customize.selectiveRefresh.Partial}
* @return {jQuery.Promise}
*/
refresh: function() {
var partial = this, refreshPromise;
refreshPromise = self.requestPartial( partial );
if ( ! partial._pendingRefreshPromise ) {
_.each( partial.placements(), function( placement ) {
partial.preparePlacement( placement );
} );
refreshPromise.done( function( placements ) {
_.each( placements, function( placement ) {
partial.renderContent( placement );
} );
} );
refreshPromise.fail( function( data, placements ) {
partial.fallback( data, placements );
} );
// Allow new request when this one finishes.
partial._pendingRefreshPromise = refreshPromise;
refreshPromise.always( function() {
partial._pendingRefreshPromise = null;
} );
}
return refreshPromise;
},
/**
* Apply the addedContent in the placement to the document.
*
* Note the placement object will have its container and removedNodes
* properties updated.
*
* @since 4.5.0
*
* @param {Placement} placement
* @param {Element|jQuery} [placement.container] - This param will be empty if there was no element matching the selector.
* @param {string|object|boolean} placement.addedContent - Rendered HTML content, a data object for JS templates to render, or false if no render.
* @param {object} [placement.context] - Optional context information about the container.
* @returns {boolean} Whether the rendering was successful and the fallback was not invoked.
*/
renderContent: function( placement ) {
var partial = this, content, newContainerElement;
if ( ! placement.container ) {
partial.fallback( new Error( 'no_container' ), [ placement ] );
return false;
}
placement.container = $( placement.container );
if ( false === placement.addedContent ) {
partial.fallback( new Error( 'missing_render' ), [ placement ] );
return false;
}
// Currently a subclass needs to override renderContent to handle partials returning data object.
if ( ! _.isString( placement.addedContent ) ) {
partial.fallback( new Error( 'non_string_content' ), [ placement ] );
return false;
}
/* jshint ignore:start */
self.orginalDocumentWrite = document.write;
document.write = function() {
throw new Error( self.data.l10n.badDocumentWrite );
};
/* jshint ignore:end */
try {
content = placement.addedContent;
if ( wp.emoji && wp.emoji.parse && ! $.contains( document.head, placement.container[0] ) ) {
content = wp.emoji.parse( content );
}
if ( partial.params.containerInclusive ) {
// Note that content may be an empty string, and in this case jQuery will just remove the oldContainer
newContainerElement = $( content );
// Merge the new context on top of the old context.
placement.context = _.extend(
placement.context,
newContainerElement.data( 'customize-partial-placement-context' ) || {}
);
newContainerElement.data( 'customize-partial-placement-context', placement.context );
placement.removedNodes = placement.container;
placement.container = newContainerElement;
placement.removedNodes.replaceWith( placement.container );
placement.container.attr( 'title', self.data.l10n.shiftClickToEdit );
} else {
placement.removedNodes = document.createDocumentFragment();
while ( placement.container[0].firstChild ) {
placement.removedNodes.appendChild( placement.container[0].firstChild );
}
placement.container.html( content );
}
placement.container.removeClass( 'customize-render-content-error' );
} catch ( error ) {
if ( 'undefined' !== typeof console && console.error ) {
console.error( partial.id, error );
}
}
/* jshint ignore:start */
document.write = self.orginalDocumentWrite;
self.orginalDocumentWrite = null;
/* jshint ignore:end */
placement.container.removeClass( 'customize-partial-refreshing' );
// Prevent placement container from being being re-triggered as being rendered among nested partials.
placement.container.data( 'customize-partial-content-rendered', true );
/**
* Announce when a partial's placement has been rendered so that dynamic elements can be re-built.
*/
self.trigger( 'partial-content-rendered', placement );
return true;
},
/**
* Handle fail to render partial.
*
* The first argument is either the failing jqXHR or an Error object, and the second argument is the array of containers.
*
* @since 4.5.0
*/
fallback: function() {
var partial = this;
if ( partial.params.fallbackRefresh ) {
self.requestFullRefresh();
}
}
} );
/**
* A Placement for a Partial.
*
* A partial placement is the actual physical representation of a partial for a given context.
* It also may have information in relation to how a placement may have just changed.
* The placement is conceptually similar to a DOM Range or MutationRecord.
*
* @class
* @augments wp.customize.Class
* @since 4.5.0
*/
self.Placement = Placement = api.Class.extend({
/**
* The partial with which the container is associated.
*
* @param {wp.customize.selectiveRefresh.Partial}
*/
partial: null,
/**
* DOM element which contains the placement's contents.
*
* This will be null if the startNode and endNode do not point to the same
* DOM element, such as in the case of a sidebar partial.
* This container element itself will be replaced for partials that
* have containerInclusive param defined as true.
*/
container: null,
/**
* DOM node for the initial boundary of the placement.
*
* This will normally be the same as endNode since most placements appear as elements.
* This is primarily useful for widget sidebars which do not have intrinsic containers, but
* for which an HTML comment is output before to mark the starting position.
*/
startNode: null,
/**
* DOM node for the terminal boundary of the placement.
*
* This will normally be the same as startNode since most placements appear as elements.
* This is primarily useful for widget sidebars which do not have intrinsic containers, but
* for which an HTML comment is output before to mark the ending position.
*/
endNode: null,
/**
* Context data.
*
* This provides information about the placement which is included in the request
* in order to render the partial properly.
*
* @param {object}
*/
context: null,
/**
* The content for the partial when refreshed.
*
* @param {string}
*/
addedContent: null,
/**
* DOM node(s) removed when the partial is refreshed.
*
* If the partial is containerInclusive, then the removedNodes will be
* the single Element that was the partial's former placement. If the
* partial is not containerInclusive, then the removedNodes will be a
* documentFragment containing the nodes removed.
*
* @param {Element|DocumentFragment}
*/
removedNodes: null,
/**
* Constructor.
*
* @since 4.5.0
*
* @param {object} args
* @param {Partial} args.partial
* @param {jQuery|Element} [args.container]
* @param {Node} [args.startNode]
* @param {Node} [args.endNode]
* @param {object} [args.context]
* @param {string} [args.addedContent]
* @param {jQuery|DocumentFragment} [args.removedNodes]
*/
initialize: function( args ) {
var placement = this;
args = _.extend( {}, args || {} );
if ( ! args.partial || ! args.partial.extended( Partial ) ) {
throw new Error( 'Missing partial' );
}
args.context = args.context || {};
if ( args.container ) {
args.container = $( args.container );
}
_.extend( placement, args );
}
});
/**
* Mapping of type names to Partial constructor subclasses.
*
* @since 4.5.0
*
* @type {Object.<string, wp.customize.selectiveRefresh.Partial>}
*/
self.partialConstructor = {};
self.partial = new api.Values({ defaultConstructor: Partial });
/**
* Get the POST vars for a Customizer preview request.
*
* @since 4.5.0
* @see wp.customize.previewer.query()
*
* @return {object}
*/
self.getCustomizeQuery = function() {
var dirtyCustomized = {};
api.each( function( value, key ) {
if ( value._dirty ) {
dirtyCustomized[ key ] = value();
}
} );
return {
wp_customize: 'on',
nonce: api.settings.nonce.preview,
theme: api.settings.theme.stylesheet,
customized: JSON.stringify( dirtyCustomized )
};
};
/**
* Currently-requested partials and their associated deferreds.
*
* @since 4.5.0
* @type {Object<string, { deferred: jQuery.Promise, partial: wp.customize.selectiveRefresh.Partial }>}
*/
self._pendingPartialRequests = {};
/**
* Timeout ID for the current requesr, or null if no request is current.
*
* @since 4.5.0
* @type {number|null}
* @private
*/
self._debouncedTimeoutId = null;
/**
* Current jqXHR for the request to the partials.
*
* @since 4.5.0
* @type {jQuery.jqXHR|null}
* @private
*/
self._currentRequest = null;
/**
* Request full page refresh.
*
* When selective refresh is embedded in the context of front-end editing, this request
* must fail or else changes will be lost, unless transactions are implemented.
*
* @since 4.5.0
*/
self.requestFullRefresh = function() {
api.preview.send( 'refresh' );
};
/**
* Request a re-rendering of a partial.
*
* @since 4.5.0
*
* @param {wp.customize.selectiveRefresh.Partial} partial
* @return {jQuery.Promise}
*/
self.requestPartial = function( partial ) {
var partialRequest;
if ( self._debouncedTimeoutId ) {
clearTimeout( self._debouncedTimeoutId );
self._debouncedTimeoutId = null;
}
if ( self._currentRequest ) {
self._currentRequest.abort();
self._currentRequest = null;
}
partialRequest = self._pendingPartialRequests[ partial.id ];
if ( ! partialRequest || 'pending' !== partialRequest.deferred.state() ) {
partialRequest = {
deferred: $.Deferred(),
partial: partial
};
self._pendingPartialRequests[ partial.id ] = partialRequest;
}
// Prevent leaking partial into debounced timeout callback.
partial = null;
self._debouncedTimeoutId = setTimeout(
function() {
var data, partialPlacementContexts, partialsPlacements, request;
self._debouncedTimeoutId = null;
data = self.getCustomizeQuery();
/*
* It is key that the containers be fetched exactly at the point of the request being
* made, because the containers need to be mapped to responses by array indices.
*/
partialsPlacements = {};
partialPlacementContexts = {};
_.each( self._pendingPartialRequests, function( pending, partialId ) {
partialsPlacements[ partialId ] = pending.partial.placements();
if ( ! self.partial.has( partialId ) ) {
pending.deferred.rejectWith( pending.partial, [ new Error( 'partial_removed' ), partialsPlacements[ partialId ] ] );
} else {
/*
* Note that this may in fact be an empty array. In that case, it is the responsibility
* of the Partial subclass instance to know where to inject the response, or else to
* just issue a refresh (default behavior). The data being returned with each container
* is the context information that may be needed to render certain partials, such as
* the contained sidebar for rendering widgets or what the nav menu args are for a menu.
*/
partialPlacementContexts[ partialId ] = _.map( partialsPlacements[ partialId ], function( placement ) {
return placement.context || {};
} );
}
} );
data.partials = JSON.stringify( partialPlacementContexts );
data[ self.data.renderQueryVar ] = '1';
request = self._currentRequest = wp.ajax.send( null, {
data: data,
url: api.settings.url.self
} );
request.done( function( data ) {
/**
* Announce the data returned from a request to render partials.
*
* The data is filtered on the server via customize_render_partials_response
* so plugins can inject data from the server to be utilized
* on the client via this event. Plugins may use this filter
* to communicate script and style dependencies that need to get
* injected into the page to support the rendered partials.
* This is similar to the 'saved' event.
*/
self.trigger( 'render-partials-response', data );
// Relay errors (warnings) captured during rendering and relay to console.
if ( data.errors && 'undefined' !== typeof console && console.warn ) {
_.each( data.errors, function( error ) {
console.warn( error );
} );
}
/*
* Note that data is an array of items that correspond to the array of
* containers that were submitted in the request. So we zip up the
* array of containers with the array of contents for those containers,
* and send them into .
*/
_.each( self._pendingPartialRequests, function( pending, partialId ) {
var placementsContents;
if ( ! _.isArray( data.contents[ partialId ] ) ) {
pending.deferred.rejectWith( pending.partial, [ new Error( 'unrecognized_partial' ), partialsPlacements[ partialId ] ] );
} else {
placementsContents = _.map( data.contents[ partialId ], function( content, i ) {
var partialPlacement = partialsPlacements[ partialId ][ i ];
if ( partialPlacement ) {
partialPlacement.addedContent = content;
} else {
partialPlacement = new Placement( {
partial: pending.partial,
addedContent: content
} );
}
return partialPlacement;
} );
pending.deferred.resolveWith( pending.partial, [ placementsContents ] );
}
} );
self._pendingPartialRequests = {};
} );
request.fail( function( data, statusText ) {
/*
* Ignore failures caused by partial.currentRequest.abort()
* The pending deferreds will remain in self._pendingPartialRequests
* for re-use with the next request.
*/
if ( 'abort' === statusText ) {
return;
}
_.each( self._pendingPartialRequests, function( pending, partialId ) {
pending.deferred.rejectWith( pending.partial, [ data, partialsPlacements[ partialId ] ] );
} );
self._pendingPartialRequests = {};
} );
},
self.data.refreshBuffer
);
return partialRequest.deferred.promise();
};
/**
* Add partials for any nav menu container elements in the document.
*
* This method may be called multiple times. Containers that already have been
* seen will be skipped.
*
* @since 4.5.0
*
* @param {jQuery|HTMLElement} [rootElement]
* @param {object} [options]
* @param {boolean=true} [options.triggerRendered]
*/
self.addPartials = function( rootElement, options ) {
var containerElements;
if ( ! rootElement ) {
rootElement = document.documentElement;
}
rootElement = $( rootElement );
options = _.extend(
{
triggerRendered: true
},
options || {}
);
containerElements = rootElement.find( '[data-customize-partial-id]' );
if ( rootElement.is( '[data-customize-partial-id]' ) ) {
containerElements = containerElements.add( rootElement );
}
containerElements.each( function() {
var containerElement = $( this ), partial, id, Constructor, partialOptions, containerContext;
id = containerElement.data( 'customize-partial-id' );
if ( ! id ) {
return;
}
containerContext = containerElement.data( 'customize-partial-placement-context' ) || {};
partial = self.partial( id );
if ( ! partial ) {
partialOptions = containerElement.data( 'customize-partial-options' ) || {};
partialOptions.constructingContainerContext = containerElement.data( 'customize-partial-placement-context' ) || {};
Constructor = self.partialConstructor[ containerElement.data( 'customize-partial-type' ) ] || self.Partial;
partial = new Constructor( id, partialOptions );
self.partial.add( partial.id, partial );
}
/*
* Only trigger renders on (nested) partials that have been not been
* handled yet. An example where this would apply is a nav menu
* embedded inside of a custom menu widget. When the widget's title
* is updated, the entire widget will re-render and then the event
* will be triggered for the nested nav menu to do any initialization.
*/
if ( options.triggerRendered && ! containerElement.data( 'customize-partial-content-rendered' ) ) {
/**
* Announce when a partial's nested placement has been re-rendered.
*/
self.trigger( 'partial-content-rendered', new Placement( {
partial: partial,
context: containerContext,
container: containerElement
} ) );
}
containerElement.data( 'customize-partial-content-rendered', true );
} );
};
api.bind( 'preview-ready', function() {
var handleSettingChange, watchSettingChange, unwatchSettingChange;
// Polyfill for IE8 to support the document.head attribute.
if ( ! document.head ) {
document.head = $( 'head:first' )[0];
}
_.extend( self.data, _customizePartialRefreshExports );
// Create the partial JS models.
_.each( self.data.partials, function( data, id ) {
var Constructor, partial = self.partial( id );
if ( ! partial ) {
Constructor = self.partialConstructor[ data.type ] || self.Partial;
partial = new Constructor( id, { params: data } );
self.partial.add( id, partial );
} else {
_.extend( partial.params, data );
}
} );
/**
* Handle change to a setting.
*
* Note this is largely needed because adding a 'change' event handler to wp.customize
* will only include the changed setting object as an argument, not including the
* new value or the old value.
*
* @since 4.5.0
* @this {wp.customize.Setting}
*
* @param {*|null} newValue New value, or null if the setting was just removed.
* @param {*|null} oldValue Old value, or null if the setting was just added.
*/
handleSettingChange = function( newValue, oldValue ) {
var setting = this;
self.partial.each( function( partial ) {
if ( partial.isRelatedSetting( setting, newValue, oldValue ) ) {
partial.refresh();
}
} );
};
/**
* Trigger the initial change for the added setting, and watch for changes.
*
* @since 4.5.0
* @this {wp.customize.Values}
*
* @param {wp.customize.Setting} setting
*/
watchSettingChange = function( setting ) {
handleSettingChange.call( setting, setting(), null );
setting.bind( handleSettingChange );
};
/**
* Trigger the final change for the removed setting, and unwatch for changes.
*
* @since 4.5.0
* @this {wp.customize.Values}
*
* @param {wp.customize.Setting} setting
*/
unwatchSettingChange = function( setting ) {
handleSettingChange.call( setting, null, setting() );
setting.unbind( handleSettingChange );
};
api.bind( 'add', watchSettingChange );
api.bind( 'remove', unwatchSettingChange );
api.each( function( setting ) {
setting.bind( handleSettingChange );
} );
// Add (dynamic) initial partials that are declared via data-* attributes.
self.addPartials( document.documentElement, {
triggerRendered: false
} );
// Add new dynamic partials when the document changes.
if ( 'undefined' !== typeof MutationObserver ) {
self.mutationObserver = new MutationObserver( function( mutations ) {
_.each( mutations, function( mutation ) {
self.addPartials( $( mutation.target ) );
} );
} );
self.mutationObserver.observe( document.documentElement, {
childList: true,
subtree: true
} );
}
/**
* Handle rendering of partials.
*
* @param {api.selectiveRefresh.Placement} placement
*/
api.selectiveRefresh.bind( 'partial-content-rendered', function( placement ) {
if ( placement.container ) {
self.addPartials( placement.container );
}
} );
/**
* Handle setting validities in partial refresh response.
*
* @param {object} data Response data.
* @param {object} data.setting_validities Setting validities.
*/
api.selectiveRefresh.bind( 'render-partials-response', function handleSettingValiditiesResponse( data ) {
if ( data.setting_validities ) {
api.preview.send( 'selective-refresh-setting-validities', data.setting_validities );
}
} );
api.preview.bind( 'active', function() {
// Make all partials ready.
self.partial.each( function( partial ) {
partial.deferred.ready.resolve();
} );
// Make all partials added henceforth as ready upon add.
self.partial.bind( 'add', function( partial ) {
partial.deferred.ready.resolve();
} );
} );
} );
return self;
}( jQuery, wp.customize ) );