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Editing: page-list.php
<?php /** * Server-side rendering of the `core/pages` block. * * @package WordPress */ /** * Returns the submenu visibility value with backward compatibility * for the deprecated openSubmenusOnClick attribute. * * @since 7.0.0 * * @param array $context Block context from parent Navigation block. * @return string The visibility mode: 'hover', 'click', or 'always'. */ function block_core_page_list_get_submenu_visibility( $context ) { $deprecated_open_submenus_on_click = $context['openSubmenusOnClick'] ?? null; // For backward compatibility, prioritize the legacy attribute if present. If it has been loaded and saved in the editor, then // the deprecated attribute will be replaced by submenuVisibility. if ( null !== $deprecated_open_submenus_on_click ) { // Convert boolean to string: true -> 'click', false -> 'hover'. return ! empty( $deprecated_open_submenus_on_click ) ? 'click' : 'hover'; } $submenu_visibility = $context['submenuVisibility'] ?? null; // Use submenuVisibility for migrated/new blocks. return $submenu_visibility ?? 'hover'; } /** * Build an array with CSS classes and inline styles defining the colors * which will be applied to the pages markup in the front-end when it is a descendant of navigation. * * @since 5.8.0 * * @param array $attributes Block attributes. * @param array $context Navigation block context. * @return array Colors CSS classes and inline styles. */ function block_core_page_list_build_css_colors( $attributes, $context ) { $colors = array( 'css_classes' => array(), 'inline_styles' => '', 'overlay_css_classes' => array(), 'overlay_inline_styles' => '', ); // Text color. $has_named_text_color = array_key_exists( 'textColor', $context ); $has_picked_text_color = array_key_exists( 'customTextColor', $context ); $has_custom_text_color = isset( $context['style']['color']['text'] ); // If has text color. if ( $has_custom_text_color || $has_picked_text_color || $has_named_text_color ) { // Add has-text-color class. $colors['css_classes'][] = 'has-text-color'; } if ( $has_named_text_color ) { // Add the color class. $colors['css_classes'][] = sprintf( 'has-%s-color', _wp_to_kebab_case( $context['textColor'] ) ); } elseif ( $has_picked_text_color ) { $colors['inline_styles'] .= sprintf( 'color: %s;', $context['customTextColor'] ); } elseif ( $has_custom_text_color ) { // Add the custom color inline style. $colors['inline_styles'] .= sprintf( 'color: %s;', $context['style']['color']['text'] ); } // Background color. $has_named_background_color = array_key_exists( 'backgroundColor', $context ); $has_picked_background_color = array_key_exists( 'customBackgroundColor', $context ); $has_custom_background_color = isset( $context['style']['color']['background'] ); // If has background color. if ( $has_custom_background_color || $has_picked_background_color || $has_named_background_color ) { // Add has-background class. $colors['css_classes'][] = 'has-background'; } if ( $has_named_background_color ) { // Add the background-color class. $colors['css_classes'][] = sprintf( 'has-%s-background-color', _wp_to_kebab_case( $context['backgroundColor'] ) ); } elseif ( $has_picked_background_color ) { $colors['inline_styles'] .= sprintf( 'background-color: %s;', $context['customBackgroundColor'] ); } elseif ( $has_custom_background_color ) { // Add the custom background-color inline style. $colors['inline_styles'] .= sprintf( 'background-color: %s;', $context['style']['color']['background'] ); } // Overlay text color. $has_named_overlay_text_color = array_key_exists( 'overlayTextColor', $context ); $has_picked_overlay_text_color = array_key_exists( 'customOverlayTextColor', $context ); // If it has a text color. if ( $has_named_overlay_text_color || $has_picked_overlay_text_color ) { $colors['overlay_css_classes'][] = 'has-text-color'; } // Give overlay colors priority, fall back to Navigation block colors, then global styles. if ( $has_named_overlay_text_color ) { $colors['overlay_css_classes'][] = sprintf( 'has-%s-color', _wp_to_kebab_case( $context['overlayTextColor'] ) ); } elseif ( $has_picked_overlay_text_color ) { $colors['overlay_inline_styles'] .= sprintf( 'color: %s;', $context['customOverlayTextColor'] ); } // Overlay background colors. $has_named_overlay_background_color = array_key_exists( 'overlayBackgroundColor', $context ); $has_picked_overlay_background_color = array_key_exists( 'customOverlayBackgroundColor', $context ); // If has background color. if ( $has_named_overlay_background_color || $has_picked_overlay_background_color ) { $colors['overlay_css_classes'][] = 'has-background'; } if ( $has_named_overlay_background_color ) { $colors['overlay_css_classes'][] = sprintf( 'has-%s-background-color', _wp_to_kebab_case( $context['overlayBackgroundColor'] ) ); } elseif ( $has_picked_overlay_background_color ) { $colors['overlay_inline_styles'] .= sprintf( 'background-color: %s;', $context['customOverlayBackgroundColor'] ); } return $colors; } /** * Outputs Page list markup from an array of pages with nested children. * * @since 5.8.0 * * @param string $submenu_visibility The submenu visibility mode: 'hover', 'click', or 'always'. * @param boolean $show_submenu_icons Whether to show submenu indicator icons. * @param boolean $is_navigation_child If block is a child of Navigation block. * @param array $nested_pages The array of nested pages. * @param boolean $is_nested Whether the submenu is nested or not. * @param array $active_page_ancestor_ids An array of ancestor ids for active page. * @param array $colors Color information for overlay styles. * @param integer $depth The nesting depth. * * @return string List markup. */ function block_core_page_list_render_nested_page_list( $submenu_visibility, $show_submenu_icons, $is_navigation_child, $nested_pages, $is_nested, $active_page_ancestor_ids = array(), $colors = array(), $depth = 0 ) { if ( empty( $nested_pages ) ) { return; } $front_page_id = (int) get_option( 'page_on_front' ); $markup = ''; // Compute visibility mode flags once $open_on_click = 'click' === $submenu_visibility; $open_on_hover = 'hover' === $submenu_visibility; $open_always = 'always' === $submenu_visibility; foreach ( (array) $nested_pages as $page ) { $css_class = $page['is_active'] ? ' current-menu-item' : ''; $aria_current = $page['is_active'] ? ' aria-current="page"' : ''; $style_attribute = ''; $css_class .= in_array( $page['page_id'], $active_page_ancestor_ids, true ) ? ' current-menu-ancestor' : ''; if ( isset( $page['children'] ) ) { $css_class .= ' has-child'; } if ( $is_navigation_child ) { $css_class .= ' wp-block-navigation-item'; // Class assignment logic matches JS editor rendering in page-list-item/edit.js // Note: elseif ensures open-on-hover-click is mutually exclusive with open-on-click if ( $open_on_click ) { $css_class .= ' open-on-click'; } elseif ( $open_on_hover && $show_submenu_icons ) { $css_class .= ' open-on-hover-click'; } elseif ( $open_always ) { $css_class .= ' open-always'; } } $navigation_child_content_class = $is_navigation_child ? ' wp-block-navigation-item__content' : ''; // If this is the first level of submenus, include the overlay colors. if ( ( ( 0 < $depth && ! $is_nested ) || $is_nested ) && isset( $colors['overlay_css_classes'], $colors['overlay_inline_styles'] ) ) { $css_class .= ' ' . trim( implode( ' ', $colors['overlay_css_classes'] ) ); if ( '' !== $colors['overlay_inline_styles'] ) { $style_attribute = sprintf( ' style="%s"', esc_attr( $colors['overlay_inline_styles'] ) ); } } if ( (int) $page['page_id'] === $front_page_id ) { $css_class .= ' menu-item-home'; } $title = $page['title'] ? $page['title'] : __( '(no title)' ); $aria_label = sprintf( /* translators: Accessibility text. %s: Parent page title. */ __( '%s submenu' ), wp_strip_all_tags( $title ) ); $markup .= '<li class="wp-block-pages-list__item' . esc_attr( $css_class ) . '"' . $style_attribute . '>'; if ( isset( $page['children'] ) && $is_navigation_child && $open_on_click ) { $markup .= '<button aria-label="' . esc_attr( $aria_label ) . '" class="' . esc_attr( $navigation_child_content_class ) . ' wp-block-navigation-submenu__toggle" aria-expanded="false">' . wp_kses_post( $title ) . '</button><span class="wp-block-page-list__submenu-icon wp-block-navigation__submenu-icon"><svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" viewBox="0 0 12 12" fill="none" aria-hidden="true" focusable="false"><path d="M1.50002 4L6.00002 8L10.5 4" stroke-width="1.5"></path></svg></span>'; } else { $markup .= '<a class="wp-block-pages-list__item__link' . esc_attr( $navigation_child_content_class ) . '" href="' . esc_url( $page['link'] ) . '"' . $aria_current . '>' . wp_kses_post( $title ) . '</a>'; } if ( isset( $page['children'] ) ) { if ( $is_navigation_child && $show_submenu_icons && ! $open_on_click ) { $markup .= '<button aria-label="' . esc_attr( $aria_label ) . '" class="wp-block-navigation__submenu-icon wp-block-navigation-submenu__toggle" aria-expanded="false">'; $markup .= '<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" viewBox="0 0 12 12" fill="none" aria-hidden="true" focusable="false"><path d="M1.50002 4L6.00002 8L10.5 4" stroke-width="1.5"></path></svg>'; $markup .= '</button>'; } $markup .= '<ul class="wp-block-navigation__submenu-container">'; $markup .= block_core_page_list_render_nested_page_list( $submenu_visibility, $show_submenu_icons, $is_navigation_child, $page['children'], $is_nested, $active_page_ancestor_ids, $colors, $depth + 1 ); $markup .= '</ul>'; } $markup .= '</li>'; } return $markup; } /** * Outputs nested array of pages * * @since 5.8.0 * * @param array $current_level The level being iterated through. * @param array $children The children grouped by parent post ID. * * @return array The nested array of pages. */ function block_core_page_list_nest_pages( $current_level, $children ) { if ( empty( $current_level ) ) { return; } foreach ( (array) $current_level as $key => $current ) { if ( isset( $children[ $key ] ) ) { $current_level[ $key ]['children'] = block_core_page_list_nest_pages( $children[ $key ], $children ); } } return $current_level; } /** * Renders the `core/page-list` block on server. * * @since 5.8.0 * * @param array $attributes The block attributes. * @param string $content The saved content. * @param WP_Block $block The parsed block. * * @return string Returns the page list markup. */ function render_block_core_page_list( $attributes, $content, $block ) { static $block_id = 0; ++$block_id; $parent_page_id = $attributes['parentPageID']; $is_nested = ! empty( $block->context['core/isInsideSubmenu'] ); $all_pages = get_pages( array( 'sort_column' => 'menu_order,post_title', 'order' => 'asc', ) ); // If there are no pages, there is nothing to show. if ( empty( $all_pages ) ) { return; } $top_level_pages = array(); $pages_with_children = array(); $active_page_ancestor_ids = array(); foreach ( (array) $all_pages as $page ) { $is_active = ! empty( $page->ID ) && ( get_queried_object_id() === $page->ID ); if ( $is_active ) { $active_page_ancestor_ids = get_post_ancestors( $page->ID ); } if ( $page->post_parent ) { $pages_with_children[ $page->post_parent ][ $page->ID ] = array( 'page_id' => $page->ID, 'title' => $page->post_title, 'link' => get_permalink( $page ), 'is_active' => $is_active, ); } else { $top_level_pages[ $page->ID ] = array( 'page_id' => $page->ID, 'title' => $page->post_title, 'link' => get_permalink( $page ), 'is_active' => $is_active, ); } } $colors = block_core_page_list_build_css_colors( $attributes, $block->context ); $classes = array_merge( $colors['css_classes'] ); $style_attribute = $colors['inline_styles']; $css_classes = trim( implode( ' ', $classes ) ); $nested_pages = block_core_page_list_nest_pages( $top_level_pages, $pages_with_children ); if ( 0 !== $parent_page_id ) { // If the parent page has no child pages, there is nothing to show. if ( ! array_key_exists( $parent_page_id, $pages_with_children ) ) { return; } $nested_pages = block_core_page_list_nest_pages( $pages_with_children[ $parent_page_id ], $pages_with_children ); } $is_navigation_child = array_key_exists( 'showSubmenuIcon', $block->context ); // Get submenu visibility with backward compatibility for openSubmenusOnClick. $submenu_visibility = $is_navigation_child ? block_core_page_list_get_submenu_visibility( $block->context ) : 'hover'; $show_submenu_icons = array_key_exists( 'showSubmenuIcon', $block->context ) ? $block->context['showSubmenuIcon'] : false; $wrapper_markup = $is_nested ? '%2$s' : '<ul %1$s>%2$s</ul>'; $items_markup = block_core_page_list_render_nested_page_list( $submenu_visibility, $show_submenu_icons, $is_navigation_child, $nested_pages, $is_nested, $active_page_ancestor_ids, $colors ); $wrapper_attributes = get_block_wrapper_attributes( array( 'class' => $css_classes, 'style' => $style_attribute, ) ); return sprintf( $wrapper_markup, $wrapper_attributes, $items_markup ); } /** * Registers the `core/pages` block on server. * * @since 5.8.0 */ function register_block_core_page_list() { register_block_type_from_metadata( __DIR__ . '/page-list', array( 'render_callback' => 'render_block_core_page_list', ) ); } add_action( 'init', 'register_block_core_page_list' );
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