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class-wp-navigation-block-renderer.php
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class-wp-navigation-block-renderer.php
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<?php
/**
* WP_Navigation_Block_Renderer class
*
* @package gutenberg
* @since 6.5.0
*/
if ( class_exists( 'WP_Navigation_Block_Renderer' ) ) {
return;
}
/**
* Helper functions used to render the navigation block.
*/
class WP_Navigation_Block_Renderer {
/**
* Used to determine which blocks are wrapped in an <li>.
*
* @var array
*/
private static $nav_blocks_wrapped_in_list_item = array(
'core/navigation-link',
'core/home-link',
'core/site-title',
'core/site-logo',
'core/navigation-submenu',
);
/**
* Used to determine which blocks need an <li> wrapper.
*
* @var array
*/
private static $needs_list_item_wrapper = array(
'core/site-title',
'core/site-logo',
);
/**
* Keeps track of all the navigation names that have been seen.
*
* @var array
*/
private static $seen_menu_names = array();
/**
* Returns whether or not this is responsive navigation.
*
* @param array $attributes The block attributes.
* @return bool Returns whether or not this is responsive navigation.
*/
private static function is_responsive( $attributes ) {
/**
* This is for backwards compatibility after the `isResponsive` attribute was been removed.
*/
$has_old_responsive_attribute = ! empty( $attributes['isResponsive'] ) && $attributes['isResponsive'];
return isset( $attributes['overlayMenu'] ) && 'never' !== $attributes['overlayMenu'] || $has_old_responsive_attribute;
}
/**
* Returns whether or not a navigation has a submenu.
*
* @param WP_Block_List $inner_blocks The list of inner blocks.
* @return bool Returns whether or not a navigation has a submenu.
*/
private static function has_submenus( $inner_blocks ) {
foreach ( $inner_blocks as $inner_block ) {
$inner_block_content = $inner_block->render();
$p = new WP_HTML_Tag_Processor( $inner_block_content );
if ( $p->next_tag(
array(
'name' => 'LI',
'class_name' => 'has-child',
)
) ) {
return true;
}
}
return false;
}
/**
* Determine whether to load the view script.
*
* @param array $attributes The block attributes.
* @param WP_Block_List $inner_blocks The list of inner blocks.
* @return bool Returns whether or not to load the view script.
*/
private static function should_load_view_script( $attributes, $inner_blocks ) {
$has_submenus = static::has_submenus( $inner_blocks );
$is_responsive_menu = static::is_responsive( $attributes );
return ( $has_submenus && ( $attributes['openSubmenusOnClick'] || $attributes['showSubmenuIcon'] ) ) || $is_responsive_menu;
}
/**
* Returns whether or not a block needs a list item wrapper.
*
* @param WP_Block $block The block.
* @return bool Returns whether or not a block needs a list item wrapper.
*/
private static function does_block_need_a_list_item_wrapper( $block ) {
return in_array( $block->name, static::$needs_list_item_wrapper, true );
}
/**
* Returns the markup for a single inner block.
*
* @param WP_Block $inner_block The inner block.
* @return string Returns the markup for a single inner block.
*/
private static function get_markup_for_inner_block( $inner_block ) {
$inner_block_content = $inner_block->render();
if ( ! empty( $inner_block_content ) ) {
if ( static::does_block_need_a_list_item_wrapper( $inner_block ) ) {
return '<li class="wp-block-navigation-item">' . $inner_block_content . '</li>';
}
return $inner_block_content;
}
}
/**
* Returns the html for the inner blocks of the navigation block.
*
* @param array $attributes The block attributes.
* @param WP_Block_List $inner_blocks The list of inner blocks.
* @return string Returns the html for the inner blocks of the navigation block.
*/
private static function get_inner_blocks_html( $attributes, $inner_blocks ) {
$has_submenus = static::has_submenus( $inner_blocks );
$should_load_view_script = static::should_load_view_script( $attributes, $inner_blocks );
$style = static::get_styles( $attributes );
$class = static::get_classes( $attributes );
$container_attributes = get_block_wrapper_attributes(
array(
'class' => 'wp-block-navigation__container ' . $class,
'style' => $style,
)
);
$inner_blocks_html = '';
$is_list_open = false;
foreach ( $inner_blocks as $inner_block ) {
$is_list_item = in_array( $inner_block->name, static::$nav_blocks_wrapped_in_list_item, true );
if ( $is_list_item && ! $is_list_open ) {
$is_list_open = true;
$inner_blocks_html .= sprintf(
'<ul %1$s>',
$container_attributes
);
}
if ( ! $is_list_item && $is_list_open ) {
$is_list_open = false;
$inner_blocks_html .= '</ul>';
}
$inner_blocks_html .= static::get_markup_for_inner_block( $inner_block );
}
if ( $is_list_open ) {
$inner_blocks_html .= '</ul>';
}
// Add directives to the submenu if needed.
if ( $has_submenus && $should_load_view_script ) {
$tags = new WP_HTML_Tag_Processor( $inner_blocks_html );
$inner_blocks_html = gutenberg_block_core_navigation_add_directives_to_submenu( $tags, $attributes );
}
return $inner_blocks_html;
}
/**
* Gets the inner blocks for the navigation block from the navigation post.
*
* @param array $attributes The block attributes.
* @return WP_Block_List Returns the inner blocks for the navigation block.
*/
private static function get_inner_blocks_from_navigation_post( $attributes ) {
$navigation_post = get_post( $attributes['ref'] );
if ( ! isset( $navigation_post ) ) {
return new WP_Block_List( array(), $attributes );
}
// Only published posts are valid. If this is changed then a corresponding change
// must also be implemented in `use-navigation-menu.js`.
if ( 'publish' === $navigation_post->post_status ) {
$parsed_blocks = parse_blocks( $navigation_post->post_content );
// 'parse_blocks' includes a null block with '\n\n' as the content when
// it encounters whitespace. This code strips it.
$compacted_blocks = gutenberg_block_core_navigation_filter_out_empty_blocks( $parsed_blocks );
// TODO - this uses the full navigation block attributes for the
// context which could be refined.
return new WP_Block_List( $compacted_blocks, $attributes );
}
}
/**
* Gets the inner blocks for the navigation block from the fallback.
*
* @param array $attributes The block attributes.
* @return WP_Block_List Returns the inner blocks for the navigation block.
*/
private static function get_inner_blocks_from_fallback( $attributes ) {
$fallback_blocks = gutenberg_block_core_navigation_get_fallback_blocks();
// Fallback my have been filtered so do basic test for validity.
if ( empty( $fallback_blocks ) || ! is_array( $fallback_blocks ) ) {
return new WP_Block_List( array(), $attributes );
}
return new WP_Block_List( $fallback_blocks, $attributes );
}
/**
* Gets the inner blocks for the navigation block.
*
* @param array $attributes The block attributes.
* @param WP_Block $block The parsed block.
* @return WP_Block_List Returns the inner blocks for the navigation block.
*/
private static function get_inner_blocks( $attributes, $block ) {
$inner_blocks = $block->inner_blocks;
// Ensure that blocks saved with the legacy ref attribute name (navigationMenuId) continue to render.
if ( array_key_exists( 'navigationMenuId', $attributes ) ) {
$attributes['ref'] = $attributes['navigationMenuId'];
}
// If:
// - the gutenberg plugin is active
// - `__unstableLocation` is defined
// - we have menu items at the defined location
// - we don't have a relationship to a `wp_navigation` Post (via `ref`).
// ...then create inner blocks from the classic menu assigned to that location.
if (
defined( 'IS_GUTENBERG_PLUGIN' ) && IS_GUTENBERG_PLUGIN &&
array_key_exists( '__unstableLocation', $attributes ) &&
! array_key_exists( 'ref', $attributes ) &&
! empty( gutenberg_block_core_navigation_get_menu_items_at_location( $attributes['__unstableLocation'] ) )
) {
$inner_blocks = gutenberg_block_core_navigation_get_inner_blocks_from_unstable_location( $attributes );
}
// Load inner blocks from the navigation post.
if ( array_key_exists( 'ref', $attributes ) ) {
$inner_blocks = static::get_inner_blocks_from_navigation_post( $attributes );
}
// If there are no inner blocks then fallback to rendering an appropriate fallback.
if ( empty( $inner_blocks ) ) {
$inner_blocks = static::get_inner_blocks_from_fallback( $attributes );
}
/**
* Filter navigation block $inner_blocks.
* Allows modification of a navigation block menu items.
*
* @since 6.1.0
*
* @param \WP_Block_List $inner_blocks
*/
$inner_blocks = apply_filters( 'block_core_navigation_render_inner_blocks', $inner_blocks );
$post_ids = gutenberg_block_core_navigation_get_post_ids( $inner_blocks );
if ( $post_ids ) {
_prime_post_caches( $post_ids, false, false );
}
return $inner_blocks;
}
/**
* Gets the name of the current navigation, if it has one.
*
* @param array $attributes The block attributes.
* @return string Returns the name of the navigation.
*/
private static function get_navigation_name( $attributes ) {
$navigation_name = $attributes['ariaLabel'] ?? '';
// Load the navigation post.
if ( array_key_exists( 'ref', $attributes ) ) {
$navigation_post = get_post( $attributes['ref'] );
if ( ! isset( $navigation_post ) ) {
return $navigation_name;
}
// Only published posts are valid. If this is changed then a corresponding change
// must also be implemented in `use-navigation-menu.js`.
if ( 'publish' === $navigation_post->post_status ) {
$navigation_name = $navigation_post->post_title;
// This is used to count the number of times a navigation name has been seen,
// so that we can ensure every navigation has a unique id.
if ( isset( static::$seen_menu_names[ $navigation_name ] ) ) {
++static::$seen_menu_names[ $navigation_name ];
} else {
static::$seen_menu_names[ $navigation_name ] = 1;
}
}
}
return $navigation_name;
}
/**
* Returns the layout class for the navigation block.
*
* @param array $attributes The block attributes.
* @return string Returns the layout class for the navigation block.
*/
private static function get_layout_class( $attributes ) {
$layout_justification = array(
'left' => 'items-justified-left',
'right' => 'items-justified-right',
'center' => 'items-justified-center',
'space-between' => 'items-justified-space-between',
);
$layout_class = '';
if (
isset( $attributes['layout']['justifyContent'] ) &&
isset( $layout_justification[ $attributes['layout']['justifyContent'] ] )
) {
$layout_class .= $layout_justification[ $attributes['layout']['justifyContent'] ];
}
if ( isset( $attributes['layout']['orientation'] ) && 'vertical' === $attributes['layout']['orientation'] ) {
$layout_class .= ' is-vertical';
}
if ( isset( $attributes['layout']['flexWrap'] ) && 'nowrap' === $attributes['layout']['flexWrap'] ) {
$layout_class .= ' no-wrap';
}
return $layout_class;
}
/**
* Return classes for the navigation block.
*
* @param array $attributes The block attributes.
* @return string Returns the classes for the navigation block.
*/
private static function get_classes( $attributes ) {
// Restore legacy classnames for submenu positioning.
$layout_class = static::get_layout_class( $attributes );
$colors = gutenberg_block_core_navigation_build_css_colors( $attributes );
$font_sizes = gutenberg_block_core_navigation_build_css_font_sizes( $attributes );
$is_responsive_menu = static::is_responsive( $attributes );
// Manually add block support text decoration as CSS class.
$text_decoration = $attributes['style']['typography']['textDecoration'] ?? null;
$text_decoration_class = sprintf( 'has-text-decoration-%s', $text_decoration );
// Sets the is-collapsed class when the navigation is set to always use the overlay.
// This saves us from needing to do this check in the view.js file (see the collapseNav function).
$is_collapsed_class = static::is_always_overlay( $attributes ) ? array( 'is-collapsed' ) : array();
$classes = array_merge(
$colors['css_classes'],
$font_sizes['css_classes'],
$is_responsive_menu ? array( 'is-responsive' ) : array(),
$layout_class ? array( $layout_class ) : array(),
$text_decoration ? array( $text_decoration_class ) : array(),
$is_collapsed_class
);
return implode( ' ', $classes );
}
private static function is_always_overlay( $attributes ) {
return isset( $attributes['overlayMenu'] ) && 'always' === $attributes['overlayMenu'];
}
/**
* Get styles for the navigation block.
*
* @param array $attributes The block attributes.
* @return string Returns the styles for the navigation block.
*/
private static function get_styles( $attributes ) {
$colors = gutenberg_block_core_navigation_build_css_colors( $attributes );
$font_sizes = gutenberg_block_core_navigation_build_css_font_sizes( $attributes );
$block_styles = isset( $attributes['styles'] ) ? $attributes['styles'] : '';
return $block_styles . $colors['inline_styles'] . $font_sizes['inline_styles'];
}
/**
* Get the responsive container markup
*
* @param array $attributes The block attributes.
* @param WP_Block_List $inner_blocks The list of inner blocks.
* @param string $inner_blocks_html The markup for the inner blocks.
* @return string Returns the container markup.
*/
private static function get_responsive_container_markup( $attributes, $inner_blocks, $inner_blocks_html ) {
$should_load_view_script = static::should_load_view_script( $attributes, $inner_blocks );
$colors = gutenberg_block_core_navigation_build_css_colors( $attributes );
$modal_unique_id = wp_unique_id( 'modal-' );
$responsive_container_classes = array(
'wp-block-navigation__responsive-container',
implode( ' ', $colors['overlay_css_classes'] ),
);
$open_button_classes = array(
'wp-block-navigation__responsive-container-open',
);
$should_display_icon_label = isset( $attributes['hasIcon'] ) && true === $attributes['hasIcon'];
$toggle_button_icon = '<svg width="24" height="24" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" aria-hidden="true" focusable="false"><rect x="4" y="7.5" width="16" height="1.5" /><rect x="4" y="15" width="16" height="1.5" /></svg>';
if ( isset( $attributes['icon'] ) ) {
if ( 'menu' === $attributes['icon'] ) {
$toggle_button_icon = '<svg width="24" height="24" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M5 5v1.5h14V5H5zm0 7.8h14v-1.5H5v1.5zM5 19h14v-1.5H5V19z" /></svg>';
}
}
$toggle_button_content = $should_display_icon_label ? $toggle_button_icon : __( 'Menu' );
$toggle_close_button_icon = '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="24" height="24" aria-hidden="true" focusable="false"><path d="M13 11.8l6.1-6.3-1-1-6.1 6.2-6.1-6.2-1 1 6.1 6.3-6.5 6.7 1 1 6.5-6.6 6.5 6.6 1-1z"></path></svg>';
$toggle_close_button_content = $should_display_icon_label ? $toggle_close_button_icon : __( 'Close' );
$toggle_aria_label_open = $should_display_icon_label ? 'aria-label="' . __( 'Open menu' ) . '"' : ''; // Open button label.
$toggle_aria_label_close = $should_display_icon_label ? 'aria-label="' . __( 'Close menu' ) . '"' : ''; // Close button label.
// Add Interactivity API directives to the markup if needed.
$open_button_directives = '';
$responsive_container_directives = '';
$responsive_dialog_directives = '';
$close_button_directives = '';
if ( $should_load_view_script ) {
$open_button_directives = '
data-wp-on--click="actions.openMenuOnClick"
data-wp-on--keydown="actions.handleMenuKeydown"
';
$responsive_container_directives = '
data-wp-class--has-modal-open="state.isMenuOpen"
data-wp-class--is-menu-open="state.isMenuOpen"
data-wp-watch="callbacks.initMenu"
data-wp-on--keydown="actions.handleMenuKeydown"
data-wp-on--focusout="actions.handleMenuFocusout"
tabindex="-1"
';
$responsive_dialog_directives = '
data-wp-bind--aria-modal="state.ariaModal"
data-wp-bind--aria-label="state.ariaLabel"
data-wp-bind--role="state.roleAttribute"
';
$close_button_directives = '
data-wp-on--click="actions.closeMenuOnClick"
';
$responsive_container_content_directives = '
data-wp-watch="callbacks.focusFirstElement"
';
}
return sprintf(
'<button aria-haspopup="dialog" %3$s class="%6$s" %10$s>%8$s</button>
<div class="%5$s" style="%7$s" id="%1$s" %11$s>
<div class="wp-block-navigation__responsive-close" tabindex="-1">
<div class="wp-block-navigation__responsive-dialog" %12$s>
<button %4$s class="wp-block-navigation__responsive-container-close" %13$s>%9$s</button>
<div class="wp-block-navigation__responsive-container-content" %14$s id="%1$s-content">
%2$s
</div>
</div>
</div>
</div>',
esc_attr( $modal_unique_id ),
$inner_blocks_html,
$toggle_aria_label_open,
$toggle_aria_label_close,
esc_attr( implode( ' ', $responsive_container_classes ) ),
esc_attr( implode( ' ', $open_button_classes ) ),
esc_attr( safecss_filter_attr( $colors['overlay_inline_styles'] ) ),
$toggle_button_content,
$toggle_close_button_content,
$open_button_directives,
$responsive_container_directives,
$responsive_dialog_directives,
$close_button_directives,
$responsive_container_content_directives
);
}
/**
* Get the wrapper attributes
*
* @param array $attributes The block attributes.
* @param WP_Block_List $inner_blocks A list of inner blocks.
* @return string Returns the navigation block markup.
*/
private static function get_nav_wrapper_attributes( $attributes, $inner_blocks ) {
$nav_menu_name = static::get_unique_navigation_name( $attributes );
$should_load_view_script = static::should_load_view_script( $attributes, $inner_blocks );
$is_responsive_menu = static::is_responsive( $attributes );
$style = static::get_styles( $attributes );
$class = static::get_classes( $attributes );
$wrapper_attributes = get_block_wrapper_attributes(
array(
'class' => $class,
'style' => $style,
'aria-label' => $nav_menu_name,
)
);
if ( $is_responsive_menu ) {
$nav_element_directives = static::get_nav_element_directives( $should_load_view_script, $attributes );
$wrapper_attributes .= ' ' . $nav_element_directives;
}
return $wrapper_attributes;
}
/**
* Get the nav element directives
*
* @param bool $should_load_view_script Whether or not the view script should be loaded.
* @return string the directives for the navigation element.
*/
private static function get_nav_element_directives( $should_load_view_script, $attributes ) {
if ( ! $should_load_view_script ) {
return '';
}
// When adding to this array be mindful of security concerns.
$nav_element_context = wp_json_encode(
array(
'overlayOpenedBy' => array(),
'type' => 'overlay',
'roleAttribute' => '',
'ariaLabel' => __( 'Menu' ),
),
JSON_HEX_TAG | JSON_HEX_APOS | JSON_HEX_AMP
);
$nav_element_directives = '
data-wp-interactive=\'{"namespace":"core/navigation"}\'
data-wp-context=\'' . $nav_element_context . '\'
';
// When the navigation overlayMenu attribute is set to "always"
// we don't need to use JavaScript to collapse the menu as we set the class manually.
if ( ! static::is_always_overlay( $attributes ) ) {
$nav_element_directives .= 'data-wp-init="callbacks.initNav"';
$nav_element_directives .= ' '; // space separator
$nav_element_directives .= 'data-wp-class--is-collapsed="context.isCollapsed"';
}
return $nav_element_directives;
}
/**
* Handle view script loading.
*
* @param array $attributes The block attributes.
* @param WP_Block $block The parsed block.
* @param WP_Block_List $inner_blocks The list of inner blocks.
*/
private static function handle_view_script_loading( $attributes, $block, $inner_blocks ) {
$should_load_view_script = static::should_load_view_script( $attributes, $inner_blocks );
$is_gutenberg_plugin = defined( 'IS_GUTENBERG_PLUGIN' ) && IS_GUTENBERG_PLUGIN;
$view_js_file = 'wp-block-navigation-view';
$script_handles = $block->block_type->view_script_handles;
if ( $is_gutenberg_plugin ) {
if ( $should_load_view_script ) {
gutenberg_enqueue_module( '@wordpress/block-library/navigation-block' );
}
// Remove the view script because we are using the module.
$block->block_type->view_script_handles = array_diff( $script_handles, array( $view_js_file ) );
} else {
// If the script already exists, there is no point in removing it from viewScript.
if ( ! wp_script_is( $view_js_file ) ) {
// If the script is not needed, and it is still in the `view_script_handles`, remove it.
if ( ! $should_load_view_script && in_array( $view_js_file, $script_handles, true ) ) {
$block->block_type->view_script_handles = array_diff( $script_handles, array( $view_js_file ) );
}
// If the script is needed, but it was previously removed, add it again.
if ( $should_load_view_script && ! in_array( $view_js_file, $script_handles, true ) ) {
$block->block_type->view_script_handles = array_merge( $script_handles, array( $view_js_file ) );
}
}
}
}
/**
* Returns the markup for the navigation block.
*
* @param array $attributes The block attributes.
* @param WP_Block_List $inner_blocks The list of inner blocks.
* @return string Returns the navigation wrapper markup.
*/
private static function get_wrapper_markup( $attributes, $inner_blocks ) {
$inner_blocks_html = static::get_inner_blocks_html( $attributes, $inner_blocks );
if ( static::is_responsive( $attributes ) ) {
return static::get_responsive_container_markup( $attributes, $inner_blocks, $inner_blocks_html );
}
return $inner_blocks_html;
}
/**
* Returns a unique name for the navigation.
*
* @param array $attributes The block attributes.
* @return string Returns a unique name for the navigation.
*/
private static function get_unique_navigation_name( $attributes ) {
$nav_menu_name = static::get_navigation_name( $attributes );
// If the menu name has been used previously then append an ID
// to the name to ensure uniqueness across a given post.
if ( isset( static::$seen_menu_names[ $nav_menu_name ] ) && static::$seen_menu_names[ $nav_menu_name ] > 1 ) {
$count = static::$seen_menu_names[ $nav_menu_name ];
$nav_menu_name = $nav_menu_name . ' ' . ( $count );
}
return $nav_menu_name;
}
/**
* Renders the navigation block.
*
* @param array $attributes The block attributes.
* @param string $content The saved content.
* @param WP_Block $block The parsed block.
* @return string Returns the navigation block markup.
*/
public static function render( $attributes, $content, $block ) {
/**
* Deprecated:
* The rgbTextColor and rgbBackgroundColor attributes
* have been deprecated in favor of
* customTextColor and customBackgroundColor ones.
* Move the values from old attrs to the new ones.
*/
if ( isset( $attributes['rgbTextColor'] ) && empty( $attributes['textColor'] ) ) {
$attributes['customTextColor'] = $attributes['rgbTextColor'];
}
if ( isset( $attributes['rgbBackgroundColor'] ) && empty( $attributes['backgroundColor'] ) ) {
$attributes['customBackgroundColor'] = $attributes['rgbBackgroundColor'];
}
unset( $attributes['rgbTextColor'], $attributes['rgbBackgroundColor'] );
$inner_blocks = static::get_inner_blocks( $attributes, $block );
// Prevent navigation blocks referencing themselves from rendering.
if ( gutenberg_block_core_navigation_block_contains_core_navigation( $inner_blocks ) ) {
return '';
}
static::handle_view_script_loading( $attributes, $block, $inner_blocks );
return sprintf(
'<nav %1$s>%2$s</nav>',
static::get_nav_wrapper_attributes( $attributes, $inner_blocks ),
static::get_wrapper_markup( $attributes, $inner_blocks )
);
}
}