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<?php |
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|
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namespace FilterEverything\Filter; |
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|
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if ( ! defined('WPINC') ) { |
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wp_die(); |
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} |
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|
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|
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class WalkerCheckbox extends \Walker |
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{ |
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/** |
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* What the class handles. |
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* |
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* @since 2.1.0 |
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* @var string |
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* |
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* @see Walker::$tree_type |
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*/ |
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public $tree_type = 'Checkbox'; |
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|
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/** |
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* Database fields to use. |
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* |
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* @since 2.1.0 |
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* @var array |
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* |
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* @see Walker::$db_fields |
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* @todo Decouple this |
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*/ |
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public $db_fields = array( |
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'parent' => 'parent', |
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'id' => 'term_id', |
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); |
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|
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public $max_depth = 0; |
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|
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public $has_not_empty_children = []; |
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|
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public $parent_opened_elements = []; |
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|
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/** |
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* Starts the list before the elements are added. |
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* |
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* @since 2.1.0 |
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* |
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* @see Walker::start_lvl() |
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* |
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* @param string $output Used to append additional content. Passed by reference. |
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* @param int $depth Optional. Depth of category. Used for tab indentation. Default 0. |
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* @param array $args Optional. An array of arguments. Will only append content if style argument |
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* value is 'list'. See wp_list_categories(). Default empty array. |
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*/ |
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public function start_lvl( &$output, $depth = 0, $args = array() ) { |
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$indent = str_repeat( "\t", $depth ); |
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$output .= "$indent<ul class='children'>\n"; |
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} |
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|
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/** |
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* Ends the list of after the elements are added. |
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* |
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* @since 2.1.0 |
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* |
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* @see Walker::end_lvl() |
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* |
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* @param string $output Used to append additional content. Passed by reference. |
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* @param int $depth Optional. Depth of category. Used for tab indentation. Default 0. |
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* @param array $args Optional. An array of arguments. Will only append content if style argument |
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* value is 'list'. See wp_list_categories(). Default empty array. |
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*/ |
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public function end_lvl( &$output, $depth = 0, $args = array() ) { |
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$indent = str_repeat( "\t", $depth ); |
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$output .= "$indent</ul>\n"; |
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} |
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|
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/** |
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* Starts the element output. |
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* |
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* @since 2.1.0 |
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* |
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* @see Walker::start_el() |
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* |
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* @param string $output Used to append additional content (passed by reference). |
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* @param WP_Term $term Term data object. |
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* @param int $depth Optional. Depth of category in reference to parents. Default 0. |
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* @param array $args Optional. An array of arguments. See wp_list_categories(). Default empty array. |
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* @param int $id Optional. ID of the current category. Default 0. |
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*/ |
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public function start_el( &$output, $term, $depth = 0, $args = array(), $id = 0 ) { |
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|
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$term_name = esc_attr( $term->name ); |
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$url_manager = $args['url_manager']; |
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$filter = $args['filter']; |
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$checked = ( in_array( $term->slug, $filter['values'] ) ) ? 1 : 0; |
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$id = $id ? $id : $term->term_id; |
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$toggleButton = ''; |
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$visibility_class = ''; |
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|
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// Don't generate an element if the term name is empty. |
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if ( '' === $term_name ) { |
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return; |
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} |
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|
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$atts = array(); |
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//$set = isset( $args['set']['ID'] ) ? array( 0 => array('ID' => $args['set']['ID'] ) ) : []; |
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$atts['href'] = $url_manager->getTermUrl( $term->slug, $filter['e_name']/*, $set*/ ); |
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|
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$attributes = ''; |
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foreach ( $atts as $attr => $value ) { |
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if ( is_scalar( $value ) && '' !== $value && false !== $value ) { |
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$value = ( 'href' === $attr ) ? esc_url( $value ) : esc_attr( $value ); |
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$attributes .= ' ' . $attr . '="' . $value . '"'; |
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} |
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} |
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|
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$link = apply_filters( 'wpc_filters_checkbox_term_html', '<a'.$attributes.'>'.$term->name.'</a>', $attributes, $term, $filter ); |
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|
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if ( isset( $args['set']['show_count']['value'] ) && $args['set']['show_count']['value'] === 'yes' ) { |
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$link .= ' '. flrt_get_count( $term ); |
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} |
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|
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$output .= "\t<li"; |
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$cross_count = isset( $term->cross_count ) ? esc_attr( $term->cross_count ) : ''; |
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|
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$parent_opened_elements_flipped = array_flip( $this->parent_opened_elements ); |
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if( isset( $parent_opened_elements_flipped[$id] ) ){ |
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$visibility_class = ' wpc-opened'; |
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} |
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|
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if( $this->max_depth > 0) { |
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$visibility_class = ' '. flrt_get_status_css_class( $id, FLRT_HIERARCHY_LIST_COOKIE_NAME ); |
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} |
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|
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$css_classes = array( |
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0 => 'wpc-checkbox-item', |
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1 => 'wpc-term-item', |
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3 => 'wpc-term-count-' . $cross_count, |
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4 => 'wpc-term-id-'.$id |
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); |
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|
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if( $checked ){ |
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$css_classes[2] = 'wpc-term-selected'; |
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} |
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|
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if( $this->has_children ){ |
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$css_classes[] = 'wpc-has-children'; |
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$toggleButton = '<i class="wpc-toggle-children-list" data-tid="'.esc_attr($term->term_id).'"></i>'; |
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} |
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|
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$has_not_empty_children_flipped = array_flip( $this->has_not_empty_children ); |
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// if( in_array( $id, $this->has_not_empty_children ) ){ |
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if( isset( $has_not_empty_children_flipped[$id] ) ){ |
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$css_classes[] = 'wpc-has-not-empty-children'; |
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} |
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|
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$css_classes = implode( ' ', $css_classes ); |
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$css_classes .= $visibility_class; |
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$css_classes = $css_classes ? ' class="' . esc_attr( $css_classes ) . '"' : ''; |
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|
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$output .= $css_classes; |
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$output .= ' id="'.flrt_term_id('term', $filter, $id, false).'">'; |
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$output .= '<div class="wpc-term-item-content-wrapper'.esc_attr( $visibility_class ).'"><input '.checked( 1, $checked, false ).' type="checkbox" data-wpc-link="'.esc_url($atts['href']).'"'; |
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$output .= ' id="'.flrt_term_id('checkbox', $filter, $id, false).'" />'."\n"; |
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$output .= '<label for="'.flrt_term_id('checkbox', $filter, $id, false).'">'; |
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$output .= "$link\n"; |
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$output .= "</label>\n"; |
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$output .= $toggleButton; |
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$output .= "</div>\n"; |
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|
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} |
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|
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/** |
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* Ends the element output, if needed. |
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* |
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* @since 2.1.0 |
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* |
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* @see Walker::end_el() |
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* |
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* @param string $output Used to append additional content (passed by reference). |
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* @param object $page Not used. |
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* @param int $depth Optional. Depth of category. Not used. |
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* @param array $args Optional. An array of arguments. Only uses 'list' for whether should append |
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* to output. See wp_list_categories(). Default empty array. |
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*/ |
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public function end_el( &$output, $page, $depth = 0, $args = array() ) { |
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$output .= "</li>\n"; |
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} |
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|
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public function walk( $elements, $max_depth, ...$args ) { |
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$output = ''; |
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|
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$this->max_depth = $max_depth; |
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|
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// Invalid parameter or nothing to walk. |
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if ( $max_depth < -1 || empty( $elements ) ) { |
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return $output; |
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} |
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|
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$parent_field = $this->db_fields['parent']; |
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|
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// Flat display. |
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if ( -1 == $max_depth ) { |
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$empty_array = array(); |
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foreach ( $elements as $e ) { |
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$this->display_element( $e, $empty_array, 1, 0, $args, $output ); |
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} |
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return $output; |
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} |
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|
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/* |
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* Need to display in hierarchical order. |
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* Separate elements into two buckets: top level and children elements. |
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* Children_elements is two dimensional array, eg. |
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* Children_elements[10][] contains all sub-elements whose parent is 10. |
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*/ |
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$top_level_elements = array(); |
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$children_elements = array(); |
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$parent_opened_elements = array(); |
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|
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foreach ( $elements as $e ) { |
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if ( empty( $e->$parent_field ) ) { |
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$top_level_elements[] = $e; |
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} else { |
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$children_elements[ $e->$parent_field ][] = $e; |
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} |
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|
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if( ! empty( $args[0]['filter']['values'] ) ){ |
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if( in_array( $e->slug, $args[0]['filter']['values'] ) ){ |
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$parent_opened_elements[] = $e->$parent_field; |
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flrt_get_all_parents( $elements, $e->$parent_field, $parent_opened_elements ); |
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} |
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} |
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|
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} |
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|
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$this->parent_opened_elements = array_unique($parent_opened_elements); |
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$this->has_not_empty_children = flrt_get_parents_with_not_empty_children($elements); |
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|
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/* |
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* When none of the elements is top level. |
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* Assume the first one must be root of the sub elements. |
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*/ |
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if ( empty( $top_level_elements ) ) { |
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|
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$first = array_slice( $elements, 0, 1 ); |
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$root = $first[0]; |
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|
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$top_level_elements = array(); |
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$children_elements = array(); |
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foreach ( $elements as $e ) { |
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if ( $root->$parent_field == $e->$parent_field ) { |
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$top_level_elements[] = $e; |
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} else { |
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$children_elements[ $e->$parent_field ][] = $e; |
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} |
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} |
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} |
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|
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foreach ( $top_level_elements as $e ) { |
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$this->display_element( $e, $children_elements, $max_depth, 0, $args, $output ); |
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} |
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|
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/* |
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* If we are displaying all levels, and remaining children_elements is not empty, |
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* then we got orphans, which should be displayed regardless. |
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*/ |
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if ( ( 0 == $max_depth ) && count( $children_elements ) > 0 ) { |
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$empty_array = array(); |
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foreach ( $children_elements as $orphans ) { |
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foreach ( $orphans as $op ) { |
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$this->display_element( $op, $empty_array, 1, 0, $args, $output ); |
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} |
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} |
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} |
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|
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return $output; |
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} |
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} |
