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Edit File : class-wp-widget-categories.php \| Size : 6.84 KB
<?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( 'classname' => 'widget_categories', 'description' => __( 'A list or dropdown of categories.' ), 'customize_selective_refresh' => true, 'show_instance_in_rest' => true, ); parent::__construct( 'categories', __( 'Categories' ), $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 `<select>` element * if more than one instance is displayed on the page. * * @param array $args Display arguments including 'before_title', 'after_title', * 'before_widget', and 'after_widget'. * @param array $instance Settings for the current Categories widget instance. / public function widget( $args, $instance ) { static $first_dropdown = true; $default_title = __( 'Categories' ); $title = ! empty( $instance['title'] ) ? $instance['title'] : $default_title; /* This filter is documented in wp-includes/widgets/class-wp-widget-pages.php / $title = apply_filters( 'widget_title', $title, $instance, $this->id_base ); $count = ! empty( $instance['count'] ) ? '1' : '0'; $hierarchical = ! empty( $instance['hierarchical'] ) ? '1' : '0'; $dropdown = ! empty( $instance['dropdown'] ) ? '1' : '0'; echo $args['before_widget']; if ( $title ) { echo $args['before_title'] . $title . $args['after_title']; } $cat_args = array( 'orderby' => 'name', 'show_count' => $count, 'hierarchical' => $hierarchical, ); if ( $dropdown ) { printf( '<form action="%s" method="get">', esc_url( home_url() ) ); $dropdown_id = ( $first_dropdown ) ? 'cat' : "{$this->id_base}-dropdown-{$this->number}"; $first_dropdown = false; echo '<label class="screen-reader-text" for="' . esc_attr( $dropdown_id ) . '">' . $title . '</label>'; $cat_args['show_option_none'] = __( 'Select Category' ); $cat_args['id'] = $dropdown_id; /* * Filters the arguments for the Categories widget drop-down. * * @since 2.8.0 * @since 4.9.0 Added the `$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( 'widget_categories_dropdown_args', $cat_args, $instance ) ); echo '</form>'; ob_start(); ?> <script> (function() { var dropdown = document.getElementById( "<?php echo esc_js( $dropdown_id ); ?>" ); function onCatChange() { if ( dropdown.options[ dropdown.selectedIndex ].value > 0 ) { dropdown.parentNode.submit(); } } dropdown.onchange = onCatChange; })(); </script> <?php wp_print_inline_script_tag( wp_remove_surrounding_empty_script_tags( ob_get_clean() ) ); } else { $format = current_theme_supports( 'html5', 'navigation-widgets' ) ? 'html5' : 'xhtml'; /* This filter is documented in wp-includes/widgets/class-wp-nav-menu-widget.php / $format = apply_filters( 'navigation_widgets_format', $format ); if ( 'html5' === $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 '<nav aria-label="' . esc_attr( $aria_label ) . '">'; } ?> <ul> <?php $cat_args['title_li'] = ''; /* * Filters the arguments for the Categories widget. * * @since 2.8.0 * @since 4.9.0 Added the `$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( 'widget_categories_args', $cat_args, $instance ) ); ?> </ul> <?php if ( 'html5' === $format ) { echo '</nav>'; } } echo $args['after_widget']; } /* * 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['title'] = sanitize_text_field( $new_instance['title'] ); $instance['count'] = ! empty( $new_instance['count'] ) ? 1 : 0; $instance['hierarchical'] = ! empty( $new_instance['hierarchical'] ) ? 1 : 0; $instance['dropdown'] = ! empty( $new_instance['dropdown'] ) ? 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( 'title' => '' ) ); $count = isset( $instance['count'] ) ? (bool) $instance['count'] : false; $hierarchical = isset( $instance['hierarchical'] ) ? (bool) $instance['hierarchical'] : false; $dropdown = isset( $instance['dropdown'] ) ? (bool) $instance['dropdown'] : false; ?> <p> <label for="<?php echo $this->get_field_id( 'title' ); ?>"><?php _e( 'Title:' ); ?></label> <input class="widefat" id="<?php echo $this->get_field_id( 'title' ); ?>" name="<?php echo $this->get_field_name( 'title' ); ?>" type="text" value="<?php echo esc_attr( $instance['title'] ); ?>" /> </p> <p> <input type="checkbox" class="checkbox" id="<?php echo $this->get_field_id( 'dropdown' ); ?>" name="<?php echo $this->get_field_name( 'dropdown' ); ?>"<?php checked( $dropdown ); ?> /> <label for="<?php echo $this->get_field_id( 'dropdown' ); ?>"><?php _e( 'Display as dropdown' ); ?></label> <br /> <input type="checkbox" class="checkbox" id="<?php echo $this->get_field_id( 'count' ); ?>" name="<?php echo $this->get_field_name( 'count' ); ?>"<?php checked( $count ); ?> /> <label for="<?php echo $this->get_field_id( 'count' ); ?>"><?php _e( 'Show post counts' ); ?></label> <br /> <input type="checkbox" class="checkbox" id="<?php echo $this->get_field_id( 'hierarchical' ); ?>" name="<?php echo $this->get_field_name( 'hierarchical' ); ?>"<?php checked( $hierarchical ); ?> /> <label for="<?php echo $this->get_field_id( 'hierarchical' ); ?>"><?php _e( 'Show hierarchy' ); ?></label> </p> <?php } } Back

Edit File : class-wp-widget-categories.php | Size : 6.84 KB

<?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(
			'classname'                   => 'widget_categories',
			'description'                 => __( 'A list or dropdown of categories.' ),
			'customize_selective_refresh' => true,
			'show_instance_in_rest'       => true,
		);
		parent::__construct( 'categories', __( 'Categories' ), $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 `<select>` element
	 *              if more than one instance is displayed on the page.
	 *
	 * @param array $args     Display arguments including 'before_title', 'after_title',
	 *                        'before_widget', and 'after_widget'.
	 * @param array $instance Settings for the current Categories widget instance.
	 */
	public function widget( $args, $instance ) {
		static $first_dropdown = true;

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

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

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

echo $args['before_widget'];

if ( $title ) {
			echo $args['before_title'] . $title . $args['after_title'];
		}

$cat_args = array(
			'orderby'      => 'name',
			'show_count'   => $count,
			'hierarchical' => $hierarchical,
		);

if ( $dropdown ) {
			printf( '<form action="%s" method="get">', esc_url( home_url() ) );
			$dropdown_id    = ( $first_dropdown ) ? 'cat' : "{$this->id_base}-dropdown-{$this->number}";
			$first_dropdown = false;

echo '<label class="screen-reader-text" for="' . esc_attr( $dropdown_id ) . '">' . $title . '</label>';

$cat_args['show_option_none'] = __( 'Select Category' );
			$cat_args['id']               = $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( 'widget_categories_dropdown_args', $cat_args, $instance ) );

echo '</form>';

ob_start();
			?>

<?php
			wp_print_inline_script_tag( wp_remove_surrounding_empty_script_tags( ob_get_clean() ) );
		} else {
			$format = current_theme_supports( 'html5', 'navigation-widgets' ) ? 'html5' : 'xhtml';

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

if ( 'html5' === $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 '<nav aria-label="' . esc_attr( $aria_label ) . '">';
			}
			?>

<ul>
				<?php
				$cat_args['title_li'] = '';

/**
				 * 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( 'widget_categories_args', $cat_args, $instance ) );
				?>
			</ul>

<?php
			if ( 'html5' === $format ) {
				echo '</nav>';
			}
		}

echo $args['after_widget'];
	}

/**
	 * 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['title']        = sanitize_text_field( $new_instance['title'] );
		$instance['count']        = ! empty( $new_instance['count'] ) ? 1 : 0;
		$instance['hierarchical'] = ! empty( $new_instance['hierarchical'] ) ? 1 : 0;
		$instance['dropdown']     = ! empty( $new_instance['dropdown'] ) ? 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( 'title' => '' ) );
		$count        = isset( $instance['count'] ) ? (bool) $instance['count'] : false;
		$hierarchical = isset( $instance['hierarchical'] ) ? (bool) $instance['hierarchical'] : false;
		$dropdown     = isset( $instance['dropdown'] ) ? (bool) $instance['dropdown'] : false;
		?>
		<p>
			<label for="<?php echo $this->get_field_id( 'title' ); ?>"><?php _e( 'Title:' ); ?></label>
			<input class="widefat" id="<?php echo $this->get_field_id( 'title' ); ?>" name="<?php echo $this->get_field_name( 'title' ); ?>" type="text" value="<?php echo esc_attr( $instance['title'] ); ?>" />
		</p>

<p>
			<input type="checkbox" class="checkbox" id="<?php echo $this->get_field_id( 'dropdown' ); ?>" name="<?php echo $this->get_field_name( 'dropdown' ); ?>"<?php checked( $dropdown ); ?> />
			<label for="<?php echo $this->get_field_id( 'dropdown' ); ?>"><?php _e( 'Display as dropdown' ); ?></label>
			<br />

<input type="checkbox" class="checkbox" id="<?php echo $this->get_field_id( 'count' ); ?>" name="<?php echo $this->get_field_name( 'count' ); ?>"<?php checked( $count ); ?> />
			<label for="<?php echo $this->get_field_id( 'count' ); ?>"><?php _e( 'Show post counts' ); ?></label>
			<br />

<input type="checkbox" class="checkbox" id="<?php echo $this->get_field_id( 'hierarchical' ); ?>" name="<?php echo $this->get_field_name( 'hierarchical' ); ?>"<?php checked( $hierarchical ); ?> />
			<label for="<?php echo $this->get_field_id( 'hierarchical' ); ?>"><?php _e( 'Show hierarchy' ); ?></label>
		</p>
		<?php
	}
}

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