array(),
'inline_styles' => '',
);
// Text color.
$has_named_text_color = array_key_exists( 'textColor', $context );
$has_custom_text_color = isset( $context['style']['color']['text'] );
// If has text color.
if ( $has_custom_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', $context['textColor'] );
} 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_custom_background_color = isset( $context['style']['color']['background'] );
// If has background color.
if ( $has_custom_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', $context['backgroundColor'] );
} elseif ( $has_custom_background_color ) {
// Add the custom background-color inline style.
$colors['inline_styles'] .= sprintf( 'background-color: %s;', $context['style']['color']['background'] );
}
return $colors;
}
/**
* Build an array with CSS classes and inline styles defining the font sizes
* which will be applied to the pages markup in the front-end when it is a descendant of navigation.
*
* @param array $context Navigation block context.
* @return array Font size CSS classes and inline styles.
*/
function block_core_page_list_build_css_font_sizes( $context ) {
// CSS classes.
$font_sizes = array(
'css_classes' => array(),
'inline_styles' => '',
);
$has_named_font_size = array_key_exists( 'fontSize', $context );
$has_custom_font_size = isset( $context['style']['typography']['fontSize'] );
if ( $has_named_font_size ) {
// Add the font size class.
$font_sizes['css_classes'][] = sprintf( 'has-%s-font-size', $context['fontSize'] );
} elseif ( $has_custom_font_size ) {
// Add the custom font size inline style.
$font_sizes['inline_styles'] = sprintf( 'font-size: %spx;', $context['style']['typography']['fontSize'] );
}
return $font_sizes;
}
/**
* Outputs Page list markup from an array of pages with nested children.
*
* @param array $nested_pages The array of nested pages.
*
* @return string List markup.
*/
function render_nested_page_list( $nested_pages ) {
if ( empty( $nested_pages ) ) {
return;
}
$markup = '';
foreach ( (array) $nested_pages as $page ) {
$css_class = 'wp-block-pages-list__item';
if ( isset( $page['children'] ) ) {
$css_class .= ' has-child';
}
$markup .= '';
$markup .= '' . wp_kses(
$page['title'],
wp_kses_allowed_html( 'post' )
) . '';
if ( isset( $page['children'] ) ) {
$markup .= '';
$markup .= '';
}
$markup .= '';
}
return $markup;
}
/**
* Outputs nested array of pages
*
* @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 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'] = nest_pages( $children[ $key ], $children );
}
}
return $current_level;
}
/**
* Renders the `core/page-list` block on server.
*
* @param array $attributes The block attributes.
* @param array $content The saved content.
* @param array $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++;
// TODO: When https://core.trac.wordpress.org/ticket/39037 REST API support for multiple orderby values is resolved,
// update 'sort_column' to 'menu_order, post_title'. Sorting by both menu_order and post_title ensures a stable sort.
// Otherwise with pages that have the same menu_order value, we can see different ordering depending on how DB
// queries are constructed internally. For example we might see a different order when a limit is set to <499
// versus >= 500.
$all_pages = get_pages(
array(
'sort_column' => 'menu_order',
'order' => 'asc',
)
);
$top_level_pages = array();
$pages_with_children = array();
foreach ( (array) $all_pages as $page ) {
if ( $page->post_parent ) {
$pages_with_children[ $page->post_parent ][ $page->ID ] = array(
'title' => $page->post_title,
'link' => get_permalink( $page->ID ),
);
} else {
$top_level_pages[ $page->ID ] = array(
'title' => $page->post_title,
'link' => get_permalink( $page->ID ),
);
}
}
$nested_pages = nest_pages( $top_level_pages, $pages_with_children );
$wrapper_markup = '';
$items_markup = render_nested_page_list( $nested_pages );
$colors = block_core_page_list_build_css_colors( $block->context );
$font_sizes = block_core_page_list_build_css_font_sizes( $block->context );
$classes = array_merge(
$colors['css_classes'],
$font_sizes['css_classes']
);
$style_attribute = ( $colors['inline_styles'] . $font_sizes['inline_styles'] );
$css_classes = trim( implode( ' ', $classes ) );
if ( $block->context && $block->context['showSubmenuIcon'] ) {
$css_classes .= ' show-submenu-icons';
}
$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.
*/
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' );