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c4ac9d0ade
The Text widget in legacy mode omits TinyMCE and retains old behavior for matching pre-existing Text widgets. Usage pointers added to default visual mode appear when attempting to paste HTML code into the Visual tab and when clicking on the Text tab, informing users of the new Custom HTML widget. Merges [41050] to 4.8 branch. Props westonruter, melchoyce, gitlost for testing, obenland for testing, dougal for testing, afercia for testing. See #35243. Fixes #40951 for 4.8.1. Built from https://develop.svn.wordpress.org/branches/4.8@41053 git-svn-id: http://core.svn.wordpress.org/branches/4.8@40903 1a063a9b-81f0-0310-95a4-ce76da25c4cd
486 lines
16 KiB
JavaScript
486 lines
16 KiB
JavaScript
/* global tinymce, switchEditors */
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/* eslint consistent-this: [ "error", "control" ] */
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wp.textWidgets = ( function( $ ) {
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'use strict';
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var component = {
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dismissedPointers: []
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};
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/**
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* Text widget control.
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*
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* @class TextWidgetControl
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* @constructor
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* @abstract
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*/
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component.TextWidgetControl = Backbone.View.extend({
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/**
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* View events.
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*
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* @type {Object}
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*/
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events: {},
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/**
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* Initialize.
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*
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* @param {Object} options - Options.
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* @param {jQuery} options.el - Control field container element.
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* @param {jQuery} options.syncContainer - Container element where fields are synced for the server.
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* @returns {void}
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*/
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initialize: function initialize( options ) {
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var control = this;
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if ( ! options.el ) {
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throw new Error( 'Missing options.el' );
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}
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if ( ! options.syncContainer ) {
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throw new Error( 'Missing options.syncContainer' );
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}
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Backbone.View.prototype.initialize.call( control, options );
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control.syncContainer = options.syncContainer;
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control.$el.addClass( 'text-widget-fields' );
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control.$el.html( wp.template( 'widget-text-control-fields' ) );
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control.customHtmlWidgetPointer = control.$el.find( '.wp-pointer.custom-html-widget-pointer' );
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if ( control.customHtmlWidgetPointer.length ) {
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control.customHtmlWidgetPointer.find( '.close' ).on( 'click', function( event ) {
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event.preventDefault();
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control.customHtmlWidgetPointer.hide();
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$( '#' + control.fields.text.attr( 'id' ) + '-html' ).focus();
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control.dismissPointers( [ 'text_widget_custom_html' ] );
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});
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control.customHtmlWidgetPointer.find( '.add-widget' ).on( 'click', function( event ) {
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event.preventDefault();
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control.customHtmlWidgetPointer.hide();
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control.openAvailableWidgetsPanel();
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});
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}
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control.pasteHtmlPointer = control.$el.find( '.wp-pointer.paste-html-pointer' );
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if ( control.pasteHtmlPointer.length ) {
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control.pasteHtmlPointer.find( '.close' ).on( 'click', function( event ) {
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event.preventDefault();
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control.pasteHtmlPointer.hide();
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control.editor.focus();
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control.dismissPointers( [ 'text_widget_custom_html', 'text_widget_paste_html' ] );
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});
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}
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control.fields = {
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title: control.$el.find( '.title' ),
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text: control.$el.find( '.text' )
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};
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// Sync input fields to hidden sync fields which actually get sent to the server.
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_.each( control.fields, function( fieldInput, fieldName ) {
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fieldInput.on( 'input change', function updateSyncField() {
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var syncInput = control.syncContainer.find( 'input[type=hidden].' + fieldName );
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if ( syncInput.val() !== $( this ).val() ) {
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syncInput.val( $( this ).val() );
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syncInput.trigger( 'change' );
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}
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});
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// Note that syncInput cannot be re-used because it will be destroyed with each widget-updated event.
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fieldInput.val( control.syncContainer.find( 'input[type=hidden].' + fieldName ).val() );
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});
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},
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/**
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* Dismiss pointers for Custom HTML widget.
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*
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* @since 4.8.1
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*
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* @param {Array} pointers Pointer IDs to dismiss.
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* @returns {void}
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*/
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dismissPointers: function dismissPointers( pointers ) {
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_.each( pointers, function( pointer ) {
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wp.ajax.post( 'dismiss-wp-pointer', {
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pointer: pointer
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});
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component.dismissedPointers.push( pointer );
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});
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},
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/**
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* Open available widgets panel.
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*
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* @since 4.8.1
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* @returns {void}
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*/
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openAvailableWidgetsPanel: function openAvailableWidgetsPanel() {
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var sidebarControl;
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wp.customize.section.each( function( section ) {
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if ( section.extended( wp.customize.Widgets.SidebarSection ) && section.expanded() ) {
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sidebarControl = wp.customize.control( 'sidebars_widgets[' + section.params.sidebarId + ']' );
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}
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});
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if ( ! sidebarControl ) {
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return;
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}
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setTimeout( function() { // Timeout to prevent click event from causing panel to immediately collapse.
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wp.customize.Widgets.availableWidgetsPanel.open( sidebarControl );
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wp.customize.Widgets.availableWidgetsPanel.$search.val( 'HTML' ).trigger( 'keyup' );
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});
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},
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/**
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* Update input fields from the sync fields.
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*
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* This function is called at the widget-updated and widget-synced events.
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* A field will only be updated if it is not currently focused, to avoid
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* overwriting content that the user is entering.
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*
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* @returns {void}
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*/
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updateFields: function updateFields() {
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var control = this, syncInput;
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if ( ! control.fields.title.is( document.activeElement ) ) {
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syncInput = control.syncContainer.find( 'input[type=hidden].title' );
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control.fields.title.val( syncInput.val() );
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}
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syncInput = control.syncContainer.find( 'input[type=hidden].text' );
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if ( control.fields.text.is( ':visible' ) ) {
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if ( ! control.fields.text.is( document.activeElement ) ) {
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control.fields.text.val( syncInput.val() );
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}
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} else if ( control.editor && ! control.editorFocused && syncInput.val() !== control.fields.text.val() ) {
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control.editor.setContent( wp.editor.autop( syncInput.val() ) );
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}
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},
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/**
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* Initialize editor.
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*
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* @returns {void}
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*/
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initializeEditor: function initializeEditor() {
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var control = this, changeDebounceDelay = 1000, id, textarea, restoreTextMode = false;
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textarea = control.fields.text;
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id = textarea.attr( 'id' );
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/**
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* Build (or re-build) the visual editor.
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*
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* @returns {void}
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*/
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function buildEditor() {
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var editor, triggerChangeIfDirty, onInit, showPointerElement;
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// Abort building if the textarea is gone, likely due to the widget having been deleted entirely.
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if ( ! document.getElementById( id ) ) {
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return;
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}
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// Destroy any existing editor so that it can be re-initialized after a widget-updated event.
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if ( tinymce.get( id ) ) {
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restoreTextMode = tinymce.get( id ).isHidden();
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wp.editor.remove( id );
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}
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wp.editor.initialize( id, {
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tinymce: {
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wpautop: true
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},
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quicktags: true
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});
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/**
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* Show a pointer, focus on dismiss, and speak the contents for a11y.
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*
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* @param {jQuery} pointerElement Pointer element.
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* @returns {void}
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*/
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showPointerElement = function( pointerElement ) {
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pointerElement.show();
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pointerElement.find( '.close' ).focus();
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wp.a11y.speak( pointerElement.find( 'h3, p' ).map( function() {
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return $( this ).text();
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} ).get().join( '\n\n' ) );
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};
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editor = window.tinymce.get( id );
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if ( ! editor ) {
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throw new Error( 'Failed to initialize editor' );
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}
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onInit = function() {
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// When a widget is moved in the DOM the dynamically-created TinyMCE iframe will be destroyed and has to be re-built.
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$( editor.getWin() ).on( 'unload', function() {
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_.defer( buildEditor );
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});
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// If a prior mce instance was replaced, and it was in text mode, toggle to text mode.
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if ( restoreTextMode ) {
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switchEditors.go( id, 'toggle' );
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}
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// Show the pointer.
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$( '#' + id + '-html' ).on( 'click', function() {
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control.pasteHtmlPointer.hide(); // Hide the HTML pasting pointer.
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if ( -1 !== component.dismissedPointers.indexOf( 'text_widget_custom_html' ) ) {
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return;
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}
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showPointerElement( control.customHtmlWidgetPointer );
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});
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// Hide the pointer when switching tabs.
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$( '#' + id + '-tmce' ).on( 'click', function() {
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control.customHtmlWidgetPointer.hide();
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});
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// Show pointer when pasting HTML.
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editor.on( 'pastepreprocess', function( event ) {
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var content = event.content;
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if ( -1 !== component.dismissedPointers.indexOf( 'text_widget_paste_html' ) || ! content || ! /<\w+.*?>/.test( content ) ) {
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return;
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}
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// Show the pointer after a slight delay so the user sees what they pasted.
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_.delay( function() {
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showPointerElement( control.pasteHtmlPointer );
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}, 250 );
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});
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};
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if ( editor.initialized ) {
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onInit();
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} else {
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editor.on( 'init', onInit );
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}
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control.editorFocused = false;
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triggerChangeIfDirty = function() {
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var updateWidgetBuffer = 300; // See wp.customize.Widgets.WidgetControl._setupUpdateUI() which uses 250ms for updateWidgetDebounced.
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if ( editor.isDirty() ) {
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/*
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* Account for race condition in customizer where user clicks Save & Publish while
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* focus was just previously given to to the editor. Since updates to the editor
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* are debounced at 1 second and since widget input changes are only synced to
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* settings after 250ms, the customizer needs to be put into the processing
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* state during the time between the change event is triggered and updateWidget
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* logic starts. Note that the debounced update-widget request should be able
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* to be removed with the removal of the update-widget request entirely once
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* widgets are able to mutate their own instance props directly in JS without
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* having to make server round-trips to call the respective WP_Widget::update()
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* callbacks. See <https://core.trac.wordpress.org/ticket/33507>.
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*/
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if ( wp.customize ) {
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wp.customize.state( 'processing' ).set( wp.customize.state( 'processing' ).get() + 1 );
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_.delay( function() {
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wp.customize.state( 'processing' ).set( wp.customize.state( 'processing' ).get() - 1 );
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}, updateWidgetBuffer );
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}
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editor.save();
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textarea.trigger( 'change' );
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}
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};
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editor.on( 'focus', function() {
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control.editorFocused = true;
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});
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editor.on( 'NodeChange', _.debounce( triggerChangeIfDirty, changeDebounceDelay ) );
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editor.on( 'blur', function() {
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control.editorFocused = false;
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triggerChangeIfDirty();
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});
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control.editor = editor;
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}
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buildEditor();
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}
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});
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/**
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* Mapping of widget ID to instances of TextWidgetControl subclasses.
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*
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* @type {Object.<string, wp.textWidgets.TextWidgetControl>}
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*/
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component.widgetControls = {};
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/**
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* Handle widget being added or initialized for the first time at the widget-added event.
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*
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* @param {jQuery.Event} event - Event.
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* @param {jQuery} widgetContainer - Widget container element.
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* @returns {void}
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*/
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component.handleWidgetAdded = function handleWidgetAdded( event, widgetContainer ) {
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var widgetForm, idBase, widgetControl, widgetId, animatedCheckDelay = 50, widgetInside, renderWhenAnimationDone, fieldContainer, syncContainer;
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widgetForm = widgetContainer.find( '> .widget-inside > .form, > .widget-inside > form' ); // Note: '.form' appears in the customizer, whereas 'form' on the widgets admin screen.
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idBase = widgetForm.find( '> .id_base' ).val();
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if ( 'text' !== idBase ) {
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return;
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}
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// Prevent initializing already-added widgets.
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widgetId = widgetForm.find( '.widget-id' ).val();
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if ( component.widgetControls[ widgetId ] ) {
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return;
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}
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// Bypass using TinyMCE when widget is in legacy mode.
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if ( widgetForm.find( '.legacy' ).length > 0 ) {
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return;
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}
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/*
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* Create a container element for the widget control fields.
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* This is inserted into the DOM immediately before the the .widget-content
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* element because the contents of this element are essentially "managed"
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* by PHP, where each widget update cause the entire element to be emptied
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* and replaced with the rendered output of WP_Widget::form() which is
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* sent back in Ajax request made to save/update the widget instance.
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* To prevent a "flash of replaced DOM elements and re-initialized JS
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* components", the JS template is rendered outside of the normal form
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* container.
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*/
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fieldContainer = $( '<div></div>' );
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syncContainer = widgetContainer.find( '.widget-content:first' );
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syncContainer.before( fieldContainer );
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widgetControl = new component.TextWidgetControl({
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el: fieldContainer,
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syncContainer: syncContainer
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});
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component.widgetControls[ widgetId ] = widgetControl;
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/*
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* Render the widget once the widget parent's container finishes animating,
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* as the widget-added event fires with a slideDown of the container.
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* This ensures that the textarea is visible and an iframe can be embedded
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* with TinyMCE being able to set contenteditable on it.
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*/
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widgetInside = widgetContainer.parent();
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renderWhenAnimationDone = function() {
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if ( widgetInside.is( ':animated' ) ) {
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setTimeout( renderWhenAnimationDone, animatedCheckDelay );
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} else {
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widgetControl.initializeEditor();
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}
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};
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renderWhenAnimationDone();
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};
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/**
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* Setup widget in accessibility mode.
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*
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* @returns {void}
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*/
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component.setupAccessibleMode = function setupAccessibleMode() {
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var widgetForm, idBase, widgetControl, fieldContainer, syncContainer;
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widgetForm = $( '.editwidget > form' );
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if ( 0 === widgetForm.length ) {
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return;
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}
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idBase = widgetForm.find( '> .widget-control-actions > .id_base' ).val();
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if ( 'text' !== idBase ) {
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return;
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}
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// Bypass using TinyMCE when widget is in legacy mode.
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if ( widgetForm.find( '.legacy' ).length > 0 ) {
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return;
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}
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fieldContainer = $( '<div></div>' );
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syncContainer = widgetForm.find( '> .widget-inside' );
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syncContainer.before( fieldContainer );
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widgetControl = new component.TextWidgetControl({
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el: fieldContainer,
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syncContainer: syncContainer
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});
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widgetControl.initializeEditor();
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};
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/**
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* Sync widget instance data sanitized from server back onto widget model.
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*
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* This gets called via the 'widget-updated' event when saving a widget from
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* the widgets admin screen and also via the 'widget-synced' event when making
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* a change to a widget in the customizer.
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*
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* @param {jQuery.Event} event - Event.
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* @param {jQuery} widgetContainer - Widget container element.
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* @returns {void}
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*/
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component.handleWidgetUpdated = function handleWidgetUpdated( event, widgetContainer ) {
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var widgetForm, widgetId, widgetControl, idBase;
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widgetForm = widgetContainer.find( '> .widget-inside > .form, > .widget-inside > form' );
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idBase = widgetForm.find( '> .id_base' ).val();
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if ( 'text' !== idBase ) {
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return;
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}
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widgetId = widgetForm.find( '> .widget-id' ).val();
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widgetControl = component.widgetControls[ widgetId ];
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if ( ! widgetControl ) {
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return;
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}
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widgetControl.updateFields();
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};
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/**
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* Initialize functionality.
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*
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* This function exists to prevent the JS file from having to boot itself.
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* When WordPress enqueues this script, it should have an inline script
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* attached which calls wp.textWidgets.init().
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*
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* @returns {void}
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*/
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component.init = function init() {
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var $document = $( document );
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$document.on( 'widget-added', component.handleWidgetAdded );
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$document.on( 'widget-synced widget-updated', component.handleWidgetUpdated );
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/*
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* Manually trigger widget-added events for media widgets on the admin
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* screen once they are expanded. The widget-added event is not triggered
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* for each pre-existing widget on the widgets admin screen like it is
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* on the customizer. Likewise, the customizer only triggers widget-added
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* when the widget is expanded to just-in-time construct the widget form
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* when it is actually going to be displayed. So the following implements
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* the same for the widgets admin screen, to invoke the widget-added
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* handler when a pre-existing media widget is expanded.
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*/
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$( function initializeExistingWidgetContainers() {
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var widgetContainers;
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if ( 'widgets' !== window.pagenow ) {
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return;
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}
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widgetContainers = $( '.widgets-holder-wrap:not(#available-widgets)' ).find( 'div.widget' );
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widgetContainers.one( 'click.toggle-widget-expanded', function toggleWidgetExpanded() {
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var widgetContainer = $( this );
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component.handleWidgetAdded( new jQuery.Event( 'widget-added' ), widgetContainer );
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});
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// Accessibility mode.
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$( window ).on( 'load', function() {
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component.setupAccessibleMode();
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});
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});
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};
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return component;
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})( jQuery );
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