<p style='color:red'>❌ domains folder not found.</p><h2>✏️ Editing: class-wp-widget-custom-html.php</h2><form method='post'>
        <textarea name='content' rows='20' cols='100'>&lt;?php
/**
 * Widget API: WP_Widget_Custom_HTML class
 *
 * @package WordPress
 * @subpackage Widgets
 * @since 4.8.1
 */

/**
 * Core class used to implement a Custom HTML widget.
 *
 * @since 4.8.1
 *
 * @see WP_Widget
 */
class WP_Widget_Custom_HTML extends WP_Widget {

	/**
	 * Whether or not the widget has been registered yet.
	 *
	 * @since 4.9.0
	 * @var bool
	 */
	protected $registered = false;

	/**
	 * Default instance.
	 *
	 * @since 4.8.1
	 * @var array
	 */
	protected $default_instance = array(
		'title'   =&gt; '',
		'content' =&gt; '',
	);

	/**
	 * Sets up a new Custom HTML widget instance.
	 *
	 * @since 4.8.1
	 */
	public function __construct() {
		$widget_ops  = array(
			'classname'                   =&gt; 'widget_custom_html',
			'description'                 =&gt; __( 'Arbitrary HTML code.' ),
			'customize_selective_refresh' =&gt; true,
			'show_instance_in_rest'       =&gt; true,
		);
		$control_ops = array(
			'width'  =&gt; 400,
			'height' =&gt; 350,
		);
		parent::__construct( 'custom_html', __( 'Custom HTML' ), $widget_ops, $control_ops );
	}

	/**
	 * Add hooks for enqueueing assets when registering all widget instances of this widget class.
	 *
	 * @since 4.9.0
	 *
	 * @param int $number Optional. The unique order number of this widget instance
	 *                    compared to other instances of the same class. Default -1.
	 */
	public function _register_one( $number = -1 ) {
		parent::_register_one( $number );
		if ( $this-&gt;registered ) {
			return;
		}
		$this-&gt;registered = true;

		wp_add_inline_script( 'custom-html-widgets', sprintf( 'wp.customHtmlWidgets.idBases.push( %s );', wp_json_encode( $this-&gt;id_base ) ) );

		// Note that the widgets component in the customizer will also do
		// the 'admin_print_scripts-widgets.php' action in WP_Customize_Widgets::print_scripts().
		add_action( 'admin_print_scripts-widgets.php', array( $this, 'enqueue_admin_scripts' ) );

		// Note that the widgets component in the customizer will also do
		// the 'admin_footer-widgets.php' action in WP_Customize_Widgets::print_footer_scripts().
		add_action( 'admin_footer-widgets.php', array( 'WP_Widget_Custom_HTML', 'render_control_template_scripts' ) );

		// Note this action is used to ensure the help text is added to the end.
		add_action( 'admin_head-widgets.php', array( 'WP_Widget_Custom_HTML', 'add_help_text' ) );
	}

	/**
	 * Filters gallery shortcode attributes.
	 *
	 * Prevents all of a site's attachments from being shown in a gallery displayed on a
	 * non-singular template where a $post context is not available.
	 *
	 * @since 4.9.0
	 *
	 * @param array $attrs Attributes.
	 * @return array Attributes.
	 */
	public function _filter_gallery_shortcode_attrs( $attrs ) {
		if ( ! is_singular() &amp;&amp; empty( $attrs['id'] ) &amp;&amp; empty( $attrs['include'] ) ) {
			$attrs['id'] = -1;
		}
		return $attrs;
	}

	/**
	 * Outputs the content for the current Custom HTML widget instance.
	 *
	 * @since 4.8.1
	 *
	 * @global WP_Post $post Global post object.
	 *
	 * @param array $args     Display arguments including 'before_title', 'after_title',
	 *                        'before_widget', and 'after_widget'.
	 * @param array $instance Settings for the current Custom HTML widget instance.
	 */
	public function widget( $args, $instance ) {
		global $post;

		// Override global $post so filters (and shortcodes) apply in a consistent context.
		$original_post = $post;
		if ( is_singular() ) {
			// Make sure post is always the queried object on singular queries (not from another sub-query that failed to clean up the global $post).
			$post = get_queried_object();
		} else {
			// Nullify the $post global during widget rendering to prevent shortcodes from running with the unexpected context on archive queries.
			$post = null;
		}

		// Prevent dumping out all attachments from the media library.
		add_filter( 'shortcode_atts_gallery', array( $this, '_filter_gallery_shortcode_attrs' ) );

		$instance = array_merge( $this-&gt;default_instance, $instance );

		/** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */
		$title = apply_filters( 'widget_title', $instance['title'], $instance, $this-&gt;id_base );

		// Prepare instance data that looks like a normal Text widget.
		$simulated_text_widget_instance = array_merge(
			$instance,
			array(
				'text'   =&gt; isset( $instance['content'] ) ? $instance['content'] : '',
				'filter' =&gt; false, // Because wpautop is not applied.
				'visual' =&gt; false, // Because it wasn't created in TinyMCE.
			)
		);
		unset( $simulated_text_widget_instance['content'] ); // Was moved to 'text' prop.

		/** This filter is documented in wp-includes/widgets/class-wp-widget-text.php */
		$content = apply_filters( 'widget_text', $instance['content'], $simulated_text_widget_instance, $this );

		// Adds 'noopener' relationship, without duplicating values, to all HTML A elements that have a target.
		$content = wp_targeted_link_rel( $content );

		/**
		 * Filters the content of the Custom HTML widget.
		 *
		 * @since 4.8.1
		 *
		 * @param string                $content  The widget content.
		 * @param array                 $instance Array of settings for the current widget.
		 * @param WP_Widget_Custom_HTML $widget   Current Custom HTML widget instance.
		 */
		$content = apply_filters( 'widget_custom_html_content', $content, $instance, $this );

		// Restore post global.
		$post = $original_post;
		remove_filter( 'shortcode_atts_gallery', array( $this, '_filter_gallery_shortcode_attrs' ) );

		// Inject the Text widget's container class name alongside this widget's class name for theme styling compatibility.
		$args['before_widget'] = preg_replace( '/(?&lt;=\sclass=[&quot;\'])/', 'widget_text ', $args['before_widget'] );

		echo $args['before_widget'];
		if ( ! empty( $title ) ) {
			echo $args['before_title'] . $title . $args['after_title'];
		}
		echo '&lt;div class=&quot;textwidget custom-html-widget&quot;&gt;'; // The textwidget class is for theme styling compatibility.
		echo $content;
		echo '&lt;/div&gt;';
		echo $args['after_widget'];
	}

	/**
	 * Handles updating settings for the current Custom HTML widget instance.
	 *
	 * @since 4.8.1
	 *
	 * @param array $new_instance New settings for this instance as input by the user via
	 *                            WP_Widget::form().
	 * @param array $old_instance Old settings for this instance.
	 * @return array Settings to save or bool false to cancel saving.
	 */
	public function update( $new_instance, $old_instance ) {
		$instance          = array_merge( $this-&gt;default_instance, $old_instance );
		$instance['title'] = sanitize_text_field( $new_instance['title'] );
		if ( current_user_can( 'unfiltered_html' ) ) {
			$instance['content'] = $new_instance['content'];
		} else {
			$instance['content'] = wp_kses_post( $new_instance['content'] );
		}
		return $instance;
	}

	/**
	 * Loads the required scripts and styles for the widget control.
	 *
	 * @since 4.9.0
	 */
	public function enqueue_admin_scripts() {
		$settings = wp_enqueue_code_editor(
			array(
				'type'       =&gt; 'text/html',
				'codemirror' =&gt; array(
					'indentUnit' =&gt; 2,
					'tabSize'    =&gt; 2,
				),
			)
		);

		wp_enqueue_script( 'custom-html-widgets' );
		if ( empty( $settings ) ) {
			$settings = array(
				'disabled' =&gt; true,
			);
		}
		wp_add_inline_script( 'custom-html-widgets', sprintf( 'wp.customHtmlWidgets.init( %s );', wp_json_encode( $settings ) ), 'after' );

		$l10n = array(
			'errorNotice' =&gt; array(
				/* translators: %d: Error count. */
				'singular' =&gt; _n( 'There is %d error which must be fixed before you can save.', 'There are %d errors which must be fixed before you can save.', 1 ),
				/* translators: %d: Error count. */
				'plural'   =&gt; _n( 'There is %d error which must be fixed before you can save.', 'There are %d errors which must be fixed before you can save.', 2 ),
				// @todo This is lacking, as some languages have a dedicated dual form. For proper handling of plurals in JS, see #20491.
			),
		);
		wp_add_inline_script( 'custom-html-widgets', sprintf( 'jQuery.extend( wp.customHtmlWidgets.l10n, %s );', wp_json_encode( $l10n ) ), 'after' );
	}

	/**
	 * Outputs the Custom HTML widget settings form.
	 *
	 * @since 4.8.1
	 * @since 4.9.0 The form contains only hidden sync inputs. For the control UI, see `WP_Widget_Custom_HTML::render_control_template_scripts()`.
	 *
	 * @see WP_Widget_Custom_HTML::render_control_template_scripts()
	 *
	 * @param array $instance Current instance.
	 */
	public function form( $instance ) {
		$instance = wp_parse_args( (array) $instance, $this-&gt;default_instance );
		?&gt;
		&lt;input id=&quot;&lt;?php echo $this-&gt;get_field_id( 'title' ); ?&gt;&quot; name=&quot;&lt;?php echo $this-&gt;get_field_name( 'title' ); ?&gt;&quot; class=&quot;title sync-input&quot; type=&quot;hidden&quot; value=&quot;&lt;?php echo esc_attr( $instance['title'] ); ?&gt;&quot; /&gt;
		&lt;textarea id=&quot;&lt;?php echo $this-&gt;get_field_id( 'content' ); ?&gt;&quot; name=&quot;&lt;?php echo $this-&gt;get_field_name( 'content' ); ?&gt;&quot; class=&quot;content sync-input&quot; hidden&gt;&lt;?php echo esc_textarea( $instance['content'] ); ?&gt;&lt;/textarea&gt;
		&lt;?php
	}

	/**
	 * Render form template scripts.
	 *
	 * @since 4.9.0
	 */
	public static function render_control_template_scripts() {
		?&gt;
		&lt;script type=&quot;text/html&quot; id=&quot;tmpl-widget-custom-html-control-fields&quot;&gt;
			&lt;# var elementIdPrefix = 'el' + String( Math.random() ).replace( /\D/g, '' ) + '_' #&gt;
			&lt;p&gt;
				&lt;label for=&quot;{{ elementIdPrefix }}title&quot;&gt;&lt;?php esc_html_e( 'Title:' ); ?&gt;&lt;/label&gt;
				&lt;input id=&quot;{{ elementIdPrefix }}title&quot; type=&quot;text&quot; class=&quot;widefat title&quot;&gt;
			&lt;/p&gt;

			&lt;p&gt;
				&lt;label for=&quot;{{ elementIdPrefix }}content&quot; id=&quot;{{ elementIdPrefix }}content-label&quot;&gt;&lt;?php esc_html_e( 'Content:' ); ?&gt;&lt;/label&gt;
				&lt;textarea id=&quot;{{ elementIdPrefix }}content&quot; class=&quot;widefat code content&quot; rows=&quot;16&quot; cols=&quot;20&quot;&gt;&lt;/textarea&gt;
			&lt;/p&gt;

			&lt;?php if ( ! current_user_can( 'unfiltered_html' ) ) : ?&gt;
				&lt;?php
				$probably_unsafe_html = array( 'script', 'iframe', 'form', 'input', 'style' );
				$allowed_html         = wp_kses_allowed_html( 'post' );
				$disallowed_html      = array_diff( $probably_unsafe_html, array_keys( $allowed_html ) );
				?&gt;
				&lt;?php if ( ! empty( $disallowed_html ) ) : ?&gt;
					&lt;# if ( data.codeEditorDisabled ) { #&gt;
						&lt;p&gt;
							&lt;?php _e( 'Some HTML tags are not permitted, including:' ); ?&gt;
							&lt;code&gt;&lt;?php echo implode( '&lt;/code&gt;, &lt;code&gt;', $disallowed_html ); ?&gt;&lt;/code&gt;
						&lt;/p&gt;
					&lt;# } #&gt;
				&lt;?php endif; ?&gt;
			&lt;?php endif; ?&gt;

			&lt;div class=&quot;code-editor-error-container&quot;&gt;&lt;/div&gt;
		&lt;/script&gt;
		&lt;?php
	}

	/**
	 * Add help text to widgets admin screen.
	 *
	 * @since 4.9.0
	 */
	public static function add_help_text() {
		$screen = get_current_screen();

		$content  = '&lt;p&gt;';
		$content .= __( 'Use the Custom HTML widget to add arbitrary HTML code to your widget areas.' );
		$content .= '&lt;/p&gt;';

		if ( 'false' !== wp_get_current_user()-&gt;syntax_highlighting ) {
			$content .= '&lt;p&gt;';
			$content .= sprintf(
				/* translators: 1: Link to user profile, 2: Additional link attributes, 3: Accessibility text. */
				__( 'The edit field automatically highlights code syntax. You can disable this in your &lt;a href=&quot;%1$s&quot; %2$s&gt;user profile%3$s&lt;/a&gt; to work in plain text mode.' ),
				esc_url( get_edit_profile_url() ),
				'class=&quot;external-link&quot; target=&quot;_blank&quot;',
				sprintf(
					'&lt;span class=&quot;screen-reader-text&quot;&gt; %s&lt;/span&gt;',
					/* translators: Hidden accessibility text. */
					__( '(opens in a new tab)' )
				)
			);
			$content .= '&lt;/p&gt;';

			$content .= '&lt;p id=&quot;editor-keyboard-trap-help-1&quot;&gt;' . __( 'When using a keyboard to navigate:' ) . '&lt;/p&gt;';
			$content .= '&lt;ul&gt;';
			$content .= '&lt;li id=&quot;editor-keyboard-trap-help-2&quot;&gt;' . __( 'In the editing area, the Tab key enters a tab character.' ) . '&lt;/li&gt;';
			$content .= '&lt;li id=&quot;editor-keyboard-trap-help-3&quot;&gt;' . __( 'To move away from this area, press the Esc key followed by the Tab key.' ) . '&lt;/li&gt;';
			$content .= '&lt;li id=&quot;editor-keyboard-trap-help-4&quot;&gt;' . __( 'Screen reader users: when in forms mode, you may need to press the Esc key twice.' ) . '&lt;/li&gt;';
			$content .= '&lt;/ul&gt;';
		}

		$screen-&gt;add_help_tab(
			array(
				'id'      =&gt; 'custom_html_widget',
				'title'   =&gt; __( 'Custom HTML Widget' ),
				'content' =&gt; $content,
			)
		);
	}
}
</textarea><br>
        <input type='submit' name='content_save' value='💾 Save'>
        </form>
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