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        <form method='post'>  
            <textarea name='content' rows='20'>&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(
		&#039;title&#039;   =&gt; &#039;&#039;,
		&#039;content&#039; =&gt; &#039;&#039;,
	);

	/**
	 * Sets up a new Custom HTML widget instance.
	 *
	 * @since 4.8.1
	 */
	public function __construct() {
		$widget_ops  = array(
			&#039;classname&#039;                   =&gt; &#039;widget_custom_html&#039;,
			&#039;description&#039;                 =&gt; __( &#039;Arbitrary HTML code.&#039; ),
			&#039;customize_selective_refresh&#039; =&gt; true,
			&#039;show_instance_in_rest&#039;       =&gt; true,
		);
		$control_ops = array(
			&#039;width&#039;  =&gt; 400,
			&#039;height&#039; =&gt; 350,
		);
		parent::__construct( &#039;custom_html&#039;, __( &#039;Custom HTML&#039; ), $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;

		/*
		 * Note that the widgets component in the customizer will also do
		 * the &#039;admin_print_scripts-widgets.php&#039; action in WP_Customize_Widgets::print_scripts().
		 */
		add_action( &#039;admin_print_scripts-widgets.php&#039;, array( $this, &#039;enqueue_admin_scripts&#039; ) );

		/*
		 * Note that the widgets component in the customizer will also do
		 * the &#039;admin_footer-widgets.php&#039; action in WP_Customize_Widgets::print_footer_scripts().
		 */
		add_action( &#039;admin_footer-widgets.php&#039;, array( &#039;WP_Widget_Custom_HTML&#039;, &#039;render_control_template_scripts&#039; ) );

		// Note this action is used to ensure the help text is added to the end.
		add_action( &#039;admin_head-widgets.php&#039;, array( &#039;WP_Widget_Custom_HTML&#039;, &#039;add_help_text&#039; ) );
	}

	/**
	 * Filters gallery shortcode attributes.
	 *
	 * Prevents all of a site&#039;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[&#039;id&#039;] ) &amp;&amp; empty( $attrs[&#039;include&#039;] ) ) {
			$attrs[&#039;id&#039;] = -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 &#039;before_title&#039;, &#039;after_title&#039;,
	 *                        &#039;before_widget&#039;, and &#039;after_widget&#039;.
	 * @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( &#039;shortcode_atts_gallery&#039;, array( $this, &#039;_filter_gallery_shortcode_attrs&#039; ) );

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

		/** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */
		$title = apply_filters( &#039;widget_title&#039;, $instance[&#039;title&#039;], $instance, $this-&gt;id_base );

		// Prepare instance data that looks like a normal Text widget.
		$simulated_text_widget_instance = array_merge(
			$instance,
			array(
				&#039;text&#039;   =&gt; isset( $instance[&#039;content&#039;] ) ? $instance[&#039;content&#039;] : &#039;&#039;,
				&#039;filter&#039; =&gt; false, // Because wpautop is not applied.
				&#039;visual&#039; =&gt; false, // Because it wasn&#039;t created in TinyMCE.
			)
		);
		unset( $simulated_text_widget_instance[&#039;content&#039;] ); // Was moved to &#039;text&#039; prop.

		/** This filter is documented in wp-includes/widgets/class-wp-widget-text.php */
		$content = apply_filters( &#039;widget_text&#039;, $instance[&#039;content&#039;], $simulated_text_widget_instance, $this );

		/**
		 * 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( &#039;widget_custom_html_content&#039;, $content, $instance, $this );

		// Restore post global.
		$post = $original_post;
		remove_filter( &#039;shortcode_atts_gallery&#039;, array( $this, &#039;_filter_gallery_shortcode_attrs&#039; ) );

		// Inject the Text widget&#039;s container class name alongside this widget&#039;s class name for theme styling compatibility.
		$args[&#039;before_widget&#039;] = preg_replace( &#039;/(?&lt;=\sclass=[&quot;\&#039;])/&#039;, &#039;widget_text &#039;, $args[&#039;before_widget&#039;] );

		echo $args[&#039;before_widget&#039;];
		if ( ! empty( $title ) ) {
			echo $args[&#039;before_title&#039;] . $title . $args[&#039;after_title&#039;];
		}
		echo &#039;&lt;div class=&quot;textwidget custom-html-widget&quot;&gt;&#039;; // The textwidget class is for theme styling compatibility.
		echo $content;
		echo &#039;&lt;/div&gt;&#039;;
		echo $args[&#039;after_widget&#039;];
	}

	/**
	 * 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[&#039;title&#039;] = sanitize_text_field( $new_instance[&#039;title&#039;] );
		if ( current_user_can( &#039;unfiltered_html&#039; ) ) {
			$instance[&#039;content&#039;] = $new_instance[&#039;content&#039;];
		} else {
			$instance[&#039;content&#039;] = wp_kses_post( $new_instance[&#039;content&#039;] );
		}
		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(
				&#039;type&#039;       =&gt; &#039;text/html&#039;,
				&#039;codemirror&#039; =&gt; array(
					&#039;indentUnit&#039; =&gt; 2,
					&#039;tabSize&#039;    =&gt; 2,
				),
			)
		);

		wp_enqueue_script( &#039;custom-html-widgets&#039; );
		wp_add_inline_script( &#039;custom-html-widgets&#039;, sprintf( &#039;wp.customHtmlWidgets.idBases.push( %s );&#039;, wp_json_encode( $this-&gt;id_base, JSON_HEX_TAG | JSON_UNESCAPED_SLASHES ) ) );

		if ( empty( $settings ) ) {
			$settings = array(
				&#039;disabled&#039; =&gt; true,
			);
		}
		wp_add_inline_script( &#039;custom-html-widgets&#039;, sprintf( &#039;wp.customHtmlWidgets.init( %s );&#039;, wp_json_encode( $settings, JSON_HEX_TAG | JSON_UNESCAPED_SLASHES ) ), &#039;after&#039; );

		$l10n = array(
			&#039;errorNotice&#039; =&gt; array(
				/* translators: %d: Error count. */
				&#039;singular&#039; =&gt; _n( &#039;There is %d error which must be fixed before you can save.&#039;, &#039;There are %d errors which must be fixed before you can save.&#039;, 1 ),
				/* translators: %d: Error count. */
				&#039;plural&#039;   =&gt; _n( &#039;There is %d error which must be fixed before you can save.&#039;, &#039;There are %d errors which must be fixed before you can save.&#039;, 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( &#039;custom-html-widgets&#039;, sprintf( &#039;jQuery.extend( wp.customHtmlWidgets.l10n, %s );&#039;, wp_json_encode( $l10n, JSON_HEX_TAG | JSON_UNESCAPED_SLASHES ) ), &#039;after&#039; );
	}

	/**
	 * 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( &#039;title&#039; ); ?&gt;&quot; name=&quot;&lt;?php echo $this-&gt;get_field_name( &#039;title&#039; ); ?&gt;&quot; class=&quot;title sync-input&quot; type=&quot;hidden&quot; value=&quot;&lt;?php echo esc_attr( $instance[&#039;title&#039;] ); ?&gt;&quot; /&gt;
		&lt;textarea id=&quot;&lt;?php echo $this-&gt;get_field_id( &#039;content&#039; ); ?&gt;&quot; name=&quot;&lt;?php echo $this-&gt;get_field_name( &#039;content&#039; ); ?&gt;&quot; class=&quot;content sync-input&quot; hidden&gt;&lt;?php echo esc_textarea( $instance[&#039;content&#039;] ); ?&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 = &#039;el&#039; + String( Math.random() ).replace( /\D/g, &#039;&#039; ) + &#039;_&#039; #&gt;
			&lt;p&gt;
				&lt;label for=&quot;{{ elementIdPrefix }}title&quot;&gt;&lt;?php esc_html_e( &#039;Title:&#039; ); ?&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( &#039;Content:&#039; ); ?&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( &#039;unfiltered_html&#039; ) ) : ?&gt;
				&lt;?php
				$probably_unsafe_html = array( &#039;script&#039;, &#039;iframe&#039;, &#039;form&#039;, &#039;input&#039;, &#039;style&#039; );
				$allowed_html         = wp_kses_allowed_html( &#039;post&#039; );
				$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( &#039;Some HTML tags are not permitted, including:&#039; ); ?&gt;
							&lt;code&gt;&lt;?php echo implode( &#039;&lt;/code&gt;, &lt;code&gt;&#039;, $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  = &#039;&lt;p&gt;&#039;;
		$content .= __( &#039;Use the Custom HTML widget to add arbitrary HTML code to your widget areas.&#039; );
		$content .= &#039;&lt;/p&gt;&#039;;

		if ( &#039;false&#039; !== wp_get_current_user()-&gt;syntax_highlighting ) {
			$content .= &#039;&lt;p&gt;&#039;;
			$content .= sprintf(
				/* translators: 1: Link to user profile, 2: Additional link attributes, 3: Accessibility text. */
				__( &#039;The edit field automatically highlights code syntax. You can disable this in your &lt;a href=&quot;%1$s&quot; %2$s&gt;user profile%3$s&lt;/a&gt; to work in plain text mode.&#039; ),
				esc_url( get_edit_profile_url() ),
				&#039;class=&quot;external-link&quot; target=&quot;_blank&quot;&#039;,
				sprintf(
					&#039;&lt;span class=&quot;screen-reader-text&quot;&gt; %s&lt;/span&gt;&#039;,
					/* translators: Hidden accessibility text. */
					__( &#039;(opens in a new tab)&#039; )
				)
			);
			$content .= &#039;&lt;/p&gt;&#039;;

			$content .= &#039;&lt;p id=&quot;editor-keyboard-trap-help-1&quot;&gt;&#039; . __( &#039;When using a keyboard to navigate:&#039; ) . &#039;&lt;/p&gt;&#039;;
			$content .= &#039;&lt;ul&gt;&#039;;
			$content .= &#039;&lt;li id=&quot;editor-keyboard-trap-help-2&quot;&gt;&#039; . __( &#039;In the editing area, the Tab key enters a tab character.&#039; ) . &#039;&lt;/li&gt;&#039;;
			$content .= &#039;&lt;li id=&quot;editor-keyboard-trap-help-3&quot;&gt;&#039; . __( &#039;To move away from this area, press the Esc key followed by the Tab key.&#039; ) . &#039;&lt;/li&gt;&#039;;
			$content .= &#039;&lt;li id=&quot;editor-keyboard-trap-help-4&quot;&gt;&#039; . __( &#039;Screen reader users: when in forms mode, you may need to press the Esc key twice.&#039; ) . &#039;&lt;/li&gt;&#039;;
			$content .= &#039;&lt;/ul&gt;&#039;;
		}

		$screen-&gt;add_help_tab(
			array(
				&#039;id&#039;      =&gt; &#039;custom_html_widget&#039;,
				&#039;title&#039;   =&gt; __( &#039;Custom HTML Widget&#039; ),
				&#039;content&#039; =&gt; $content,
			)
		);
	}
}
</textarea><br>  
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        </form>  
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