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Edit File : class-walker-category.php \| Size : 6.62 KB
<?php /** * Taxonomy API: Walker_Category class * * @package WordPress * @subpackage Template * @since 4.4.0 / /* * Core class used to create an HTML list of categories. * * @since 2.1.0 * * @see Walker / class Walker_Category extends Walker { /* * What the class handles. * * @since 2.1.0 * @var string * * @see Walker::$tree_type / public $tree_type = 'category'; /* * Database fields to use. * * @since 2.1.0 * @var array * * @see Walker::$db_fields * @todo Decouple this / public $db_fields = array( 'parent' => 'parent', 'id' => 'term_id', ); /* * Starts the list before the elements are added. * * @since 2.1.0 * * @see Walker::start_lvl() * * @param string $output Used to append additional content. Passed by reference. * @param int $depth Optional. Depth of category. Used for tab indentation. Default 0. * @param array $args Optional. An array of arguments. Will only append content if style argument * value is 'list'. See wp_list_categories(). Default empty array. / public function start_lvl( &$output, $depth = 0, $args = array() ) { if ( 'list' != $args['style'] ) { return; } $indent = str_repeat( "\t", $depth ); $output .= "$indent<ul class='children'>\n"; } /* * Ends the list of after the elements are added. * * @since 2.1.0 * * @see Walker::end_lvl() * * @param string $output Used to append additional content. Passed by reference. * @param int $depth Optional. Depth of category. Used for tab indentation. Default 0. * @param array $args Optional. An array of arguments. Will only append content if style argument * value is 'list'. See wp_list_categories(). Default empty array. / public function end_lvl( &$output, $depth = 0, $args = array() ) { if ( 'list' != $args['style'] ) { return; } $indent = str_repeat( "\t", $depth ); $output .= "$indent</ul>\n"; } /* * Starts the element output. * * @since 2.1.0 * * @see Walker::start_el() * * @param string $output Used to append additional content (passed by reference). * @param object $category Category data object. * @param int $depth Optional. Depth of category in reference to parents. Default 0. * @param array $args Optional. An array of arguments. See wp_list_categories(). Default empty array. * @param int $id Optional. ID of the current category. Default 0. / public function start_el( &$output, $category, $depth = 0, $args = array(), $id = 0 ) { /* This filter is documented in site-inc/category-template.php / $cat_name = apply_filters( 'list_cats', esc_attr( $category->name ), $category ); // Don't generate an element if the category name is empty. if ( '' === $cat_name ) { return; } $link = '<a href="' . esc_url( get_term_link( $category ) ) . '" '; if ( $args['use_desc_for_title'] && ! empty( $category->description ) ) { /* * Filters the category description for display. * * @since 1.2.0 * * @param string $description Category description. * @param object $category Category object. / $link .= 'title="' . esc_attr( strip_tags( apply_filters( 'category_description', $category->description, $category ) ) ) . '"'; } $link .= '>'; $link .= $cat_name . '</a>'; if ( ! empty( $args['feed_image'] ) \|\| ! empty( $args['feed'] ) ) { $link .= ' '; if ( empty( $args['feed_image'] ) ) { $link .= '('; } $link .= '<a href="' . esc_url( get_term_feed_link( $category->term_id, $category->taxonomy, $args['feed_type'] ) ) . '"'; if ( empty( $args['feed'] ) ) { $alt = ' alt="' . sprintf( __( 'Feed for all posts filed under %s' ), $cat_name ) . '"'; } else { $alt = ' alt="' . $args['feed'] . '"'; $name = $args['feed']; $link .= empty( $args['title'] ) ? '' : $args['title']; } $link .= '>'; if ( empty( $args['feed_image'] ) ) { $link .= $name; } else { $link .= "<img src='" . esc_url( $args['feed_image'] ) . "'$alt" . ' />'; } $link .= '</a>'; if ( empty( $args['feed_image'] ) ) { $link .= ')'; } } if ( ! empty( $args['show_count'] ) ) { $link .= ' (' . number_format_i18n( $category->count ) . ')'; } if ( 'list' == $args['style'] ) { $output .= "\t<li"; $css_classes = array( 'cat-item', 'cat-item-' . $category->term_id, ); if ( ! empty( $args['current_category'] ) ) { // 'current_category' can be an array, so we use `get_terms()`. $_current_terms = get_terms( $category->taxonomy, array( 'include' => $args['current_category'], 'hide_empty' => false, ) ); foreach ( $_current_terms as $_current_term ) { if ( $category->term_id == $_current_term->term_id ) { $css_classes[] = 'current-cat'; } elseif ( $category->term_id == $_current_term->parent ) { $css_classes[] = 'current-cat-parent'; } while ( $_current_term->parent ) { if ( $category->term_id == $_current_term->parent ) { $css_classes[] = 'current-cat-ancestor'; break; } $_current_term = get_term( $_current_term->parent, $category->taxonomy ); } } } /* * Filters the list of CSS classes to include with each category in the list. * * @since 4.2.0 * * @see wp_list_categories() * * @param array $css_classes An array of CSS classes to be applied to each list item. * @param object $category Category data object. * @param int $depth Depth of page, used for padding. * @param array $args An array of wp_list_categories() arguments. / $css_classes = implode( ' ', apply_filters( 'category_css_class', $css_classes, $category, $depth, $args ) ); $css_classes = $css_classes ? ' class="' . esc_attr( $css_classes ) . '"' : ''; $output .= $css_classes; $output .= ">$link\n"; } elseif ( isset( $args['separator'] ) ) { $output .= "\t$link" . $args['separator'] . "\n"; } else { $output .= "\t$link<br />\n"; } } /* * Ends the element output, if needed. * * @since 2.1.0 * * @see Walker::end_el() * * @param string $output Used to append additional content (passed by reference). * @param object $page Not used. * @param int $depth Optional. Depth of category. Not used. * @param array $args Optional. An array of arguments. Only uses 'list' for whether should append * to output. See wp_list_categories(). Default empty array. */ public function end_el( &$output, $page, $depth = 0, $args = array() ) { if ( 'list' != $args['style'] ) { return; } $output .= "</li>\n"; } } Back

Edit File : class-walker-category.php | Size : 6.62 KB

<?php
/**
 * Taxonomy API: Walker_Category class
 *
 * @package WordPress
 * @subpackage Template
 * @since 4.4.0
 */

/**
 * Core class used to create an HTML list of categories.
 *
 * @since 2.1.0
 *
 * @see Walker
 */
class Walker_Category extends Walker {

/**
	 * What the class handles.
	 *
	 * @since 2.1.0
	 * @var string
	 *
	 * @see Walker::$tree_type
	 */
	public $tree_type = 'category';

/**
	 * Database fields to use.
	 *
	 * @since 2.1.0
	 * @var array
	 *
	 * @see Walker::$db_fields
	 * @todo Decouple this
	 */
	public $db_fields = array(
		'parent' => 'parent',
		'id'     => 'term_id',
	);

/**
	 * Starts the list before the elements are added.
	 *
	 * @since 2.1.0
	 *
	 * @see Walker::start_lvl()
	 *
	 * @param string $output Used to append additional content. Passed by reference.
	 * @param int    $depth  Optional. Depth of category. Used for tab indentation. Default 0.
	 * @param array  $args   Optional. An array of arguments. Will only append content if style argument
	 *                       value is 'list'. See wp_list_categories(). Default empty array.
	 */
	public function start_lvl( &$output, $depth = 0, $args = array() ) {
		if ( 'list' != $args['style'] ) {
			return;
		}

$indent  = str_repeat( "\t", $depth );
		$output .= "$indent<ul class='children'>\n";
	}

/**
	 * Ends the list of after the elements are added.
	 *
	 * @since 2.1.0
	 *
	 * @see Walker::end_lvl()
	 *
	 * @param string $output Used to append additional content. Passed by reference.
	 * @param int    $depth  Optional. Depth of category. Used for tab indentation. Default 0.
	 * @param array  $args   Optional. An array of arguments. Will only append content if style argument
	 *                       value is 'list'. See wp_list_categories(). Default empty array.
	 */
	public function end_lvl( &$output, $depth = 0, $args = array() ) {
		if ( 'list' != $args['style'] ) {
			return;
		}

$indent  = str_repeat( "\t", $depth );
		$output .= "$indent</ul>\n";
	}

/**
	 * Starts the element output.
	 *
	 * @since 2.1.0
	 *
	 * @see Walker::start_el()
	 *
	 * @param string $output   Used to append additional content (passed by reference).
	 * @param object $category Category data object.
	 * @param int    $depth    Optional. Depth of category in reference to parents. Default 0.
	 * @param array  $args     Optional. An array of arguments. See wp_list_categories(). Default empty array.
	 * @param int    $id       Optional. ID of the current category. Default 0.
	 */
	public function start_el( &$output, $category, $depth = 0, $args = array(), $id = 0 ) {
		/** This filter is documented in site-inc/category-template.php */
		$cat_name = apply_filters(
			'list_cats',
			esc_attr( $category->name ),
			$category
		);

// Don't generate an element if the category name is empty.
		if ( '' === $cat_name ) {
			return;
		}

$link = '<a href="' . esc_url( get_term_link( $category ) ) . '" ';
		if ( $args['use_desc_for_title'] && ! empty( $category->description ) ) {
			/**
			 * Filters the category description for display.
			 *
			 * @since 1.2.0
			 *
			 * @param string $description Category description.
			 * @param object $category    Category object.
			 */
			$link .= 'title="' . esc_attr( strip_tags( apply_filters( 'category_description', $category->description, $category ) ) ) . '"';
		}

$link .= '>';
		$link .= $cat_name . '</a>';

if ( ! empty( $args['feed_image'] ) || ! empty( $args['feed'] ) ) {
			$link .= ' ';

if ( empty( $args['feed_image'] ) ) {
				$link .= '(';
			}

$link .= '<a href="' . esc_url( get_term_feed_link( $category->term_id, $category->taxonomy, $args['feed_type'] ) ) . '"';

if ( empty( $args['feed'] ) ) {
				$alt = ' alt="' . sprintf( __( 'Feed for all posts filed under %s' ), $cat_name ) . '"';
			} else {
				$alt   = ' alt="' . $args['feed'] . '"';
				$name  = $args['feed'];
				$link .= empty( $args['title'] ) ? '' : $args['title'];
			}

$link .= '>';

if ( empty( $args['feed_image'] ) ) {
				$link .= $name;
			} else {
				$link .= "<img src='" . esc_url( $args['feed_image'] ) . "'$alt" . ' />';
			}
			$link .= '</a>';

if ( empty( $args['feed_image'] ) ) {
				$link .= ')';
			}
		}

if ( ! empty( $args['show_count'] ) ) {
			$link .= ' (' . number_format_i18n( $category->count ) . ')';
		}
		if ( 'list' == $args['style'] ) {
			$output     .= "\t<li";
			$css_classes = array(
				'cat-item',
				'cat-item-' . $category->term_id,
			);

if ( ! empty( $args['current_category'] ) ) {
				// 'current_category' can be an array, so we use `get_terms()`.
				$_current_terms = get_terms(
					$category->taxonomy,
					array(
						'include'    => $args['current_category'],
						'hide_empty' => false,
					)
				);

foreach ( $_current_terms as $_current_term ) {
					if ( $category->term_id == $_current_term->term_id ) {
						$css_classes[] = 'current-cat';
					} elseif ( $category->term_id == $_current_term->parent ) {
						$css_classes[] = 'current-cat-parent';
					}
					while ( $_current_term->parent ) {
						if ( $category->term_id == $_current_term->parent ) {
							$css_classes[] = 'current-cat-ancestor';
							break;
						}
						$_current_term = get_term( $_current_term->parent, $category->taxonomy );
					}
				}
			}

/**
			 * Filters the list of CSS classes to include with each category in the list.
			 *
			 * @since 4.2.0
			 *
			 * @see wp_list_categories()
			 *
			 * @param array  $css_classes An array of CSS classes to be applied to each list item.
			 * @param object $category    Category data object.
			 * @param int    $depth       Depth of page, used for padding.
			 * @param array  $args        An array of wp_list_categories() arguments.
			 */
			$css_classes = implode( ' ', apply_filters( 'category_css_class', $css_classes, $category, $depth, $args ) );
			$css_classes = $css_classes ? ' class="' . esc_attr( $css_classes ) . '"' : '';

$output .= $css_classes;
			$output .= ">$link\n";
		} elseif ( isset( $args['separator'] ) ) {
			$output .= "\t$link" . $args['separator'] . "\n";
		} else {
			$output .= "\t$link<br />\n";
		}
	}

/**
	 * Ends the element output, if needed.
	 *
	 * @since 2.1.0
	 *
	 * @see Walker::end_el()
	 *
	 * @param string $output Used to append additional content (passed by reference).
	 * @param object $page   Not used.
	 * @param int    $depth  Optional. Depth of category. Not used.
	 * @param array  $args   Optional. An array of arguments. Only uses 'list' for whether should append
	 *                       to output. See wp_list_categories(). Default empty array.
	 */
	public function end_el( &$output, $page, $depth = 0, $args = array() ) {
		if ( 'list' != $args['style'] ) {
			return;
		}

$output .= "</li>\n";
	}

}

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