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<?php
/**
* Server-side rendering of the `core/navigation-link` block.
*
* @package gutenberg
*/
/**
* Build an array with CSS classes and inline styles defining the colors
* which will be applied to the navigation markup in the front-end.
*
* @param array $context Navigation block context.
* @return array Colors CSS classes and inline styles.
*/
function gutenberg_block_core_navigation_link_build_css_colors( $context ) {
$colors = array(
'css_classes' => array(),
'inline_styles' => '',
);
// Text color.
$has_named_text_color = array_key_exists( 'textColor', $context );
$has_custom_text_color = array_key_exists( 'customTextColor', $context );
// 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['customTextColor'] );
}
// Background color.
$has_named_background_color = array_key_exists( 'backgroundColor', $context );
$has_custom_background_color = array_key_exists( 'customBackgroundColor', $context );
// 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['customBackgroundColor'] );
}
return $colors;
}
/**
* Build an array with CSS classes and inline styles defining the font sizes
* which will be applied to the navigation markup in the front-end.
*
* @param array $context Navigation block context.
* @return array Font size CSS classes and inline styles.
*/
function gutenberg_block_core_navigation_link_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 = array_key_exists( 'customFontSize', $context );
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['customFontSize'] );
}
return $font_sizes;
}
/**
* Returns the top-level submenu SVG chevron icon.
*
* @return string
*/
function gutenberg_block_core_navigation_link_render_submenu_icon() {
return '<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" viewBox="0 0 24 24" transform="rotate(90)"><path d="M8 5v14l11-7z"/><path d="M0 0h24v24H0z" fill="none"/></svg>';
}
/**
* Renders the `core/navigation-link` block.
*
* @param array $attributes The block attributes.
* @param array $content The saved content.
* @param array $block The parsed block.
*
* @return string Returns the post content with the legacy widget added.
*/
function gutenberg_render_block_core_navigation_link( $attributes, $content, $block ) {
// Don't render the block's subtree if it has no label.
if ( empty( $attributes['label'] ) ) {
return '';
}
$colors = gutenberg_block_core_navigation_link_build_css_colors( $block->context );
$font_sizes = gutenberg_block_core_navigation_link_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 ) );
$has_submenu = count( $block->inner_blocks ) > 0;
$is_active = ! empty( $attributes['id'] ) && ( get_the_ID() === $attributes['id'] );
$class_name = ! empty( $attributes['className'] ) ? implode( ' ', (array) $attributes['className'] ) : false;
if ( false !== $class_name ) {
$css_classes .= ' ' . $class_name;
};
$wrapper_attributes = get_block_wrapper_attributes(
array(
'class' => $css_classes . ( $has_submenu ? ' has-child' : '' ) .
( $is_active ? ' current-menu-item' : '' ),
'style' => $style_attribute,
)
);
$html = '<li ' . $wrapper_attributes . '>' .
'<a class="wp-block-navigation-link__content" ';
// Start appending HTML attributes to anchor tag.
if ( isset( $attributes['url'] ) ) {
$html .= ' href="' . esc_url( $attributes['url'] ) . '"';
}
if ( isset( $attributes['opensInNewTab'] ) && true === $attributes['opensInNewTab'] ) {
$html .= ' target="_blank" ';
}
if ( isset( $attributes['rel'] ) ) {
$html .= ' rel="' . esc_attr( $attributes['rel'] ) . '"';
} elseif ( isset( $attributes['nofollow'] ) && $attributes['nofollow'] ) {
$html .= ' rel="nofollow"';
}
if ( isset( $attributes['title'] ) ) {
$html .= ' title="' . esc_attr( $attributes['title'] ) . '"';
}
// End appending HTML attributes to anchor tag.
// Start anchor tag content.
$html .= '>' .
// Wrap title with span to isolate it from submenu icon.
'<span class="wp-block-navigation-link__label">';
if ( isset( $attributes['label'] ) ) {
$html .= wp_kses(
$attributes['label'],
array(
'code' => array(),
'em' => array(),
'img' => array(
'scale' => array(),
'class' => array(),
'style' => array(),
'src' => array(),
'alt' => array(),
),
's' => array(),
'span' => array(
'style' => array(),
),
'strong' => array(),
)
);
}
$html .= '</span>';
$html .= '</a>';
// End anchor tag content.
if ( $block->context['showSubmenuIcon'] && $has_submenu ) {
// The submenu icon can be hidden by a CSS rule on the Navigation Block.
$html .= '<span class="wp-block-navigation-link__submenu-icon">' . gutenberg_block_core_navigation_link_render_submenu_icon() . '</span>';
}
if ( $has_submenu ) {
$inner_blocks_html = '';
foreach ( $block->inner_blocks as $inner_block ) {
$inner_blocks_html .= $inner_block->render();
}
// TODO - classname is wrong!
$html .= sprintf(
'<ul class="wp-block-navigation__container">%s</ul>',
$inner_blocks_html
);
}
$html .= '</li>';
return $html;
}
/**
* Register the navigation link block.
*
* @uses render_block_core_navigation()
* @throws WP_Error An WP_Error exception parsing the block definition.
*/
function gutenberg_register_block_core_navigation_link() {
register_block_type_from_metadata(
__DIR__ . '/navigation-link',
array(
'render_callback' => 'gutenberg_render_block_core_navigation_link',
)
);
}
add_action( 'init', 'gutenberg_register_block_core_navigation_link', 20 );