108 lines
3.5 KiB
PHP
108 lines
3.5 KiB
PHP
<?php
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/**
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* SVG icons related functions
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*
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* @package WordPress
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* @subpackage Twenty_Nineteen
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* @since Twenty Nineteen 1.0
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*/
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/**
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* Gets the SVG code for a given icon.
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*/
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function twentynineteen_get_icon_svg( $icon, $size = 24 ) {
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return TwentyNineteen_SVG_Icons::get_svg( 'ui', $icon, $size );
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}
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/**
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* Gets the SVG code for a given social icon.
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*/
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function twentynineteen_get_social_icon_svg( $icon, $size = 24 ) {
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return TwentyNineteen_SVG_Icons::get_svg( 'social', $icon, $size );
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}
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/**
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* Detects the social network from a URL and returns the SVG code for its icon.
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*/
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function twentynineteen_get_social_link_svg( $uri, $size = 24 ) {
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return TwentyNineteen_SVG_Icons::get_social_link_svg( $uri, $size );
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}
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/**
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* Display SVG icons in social links menu.
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*
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* @param string $item_output The menu item's starting HTML output.
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* @param WP_Post $item Menu item data object.
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* @param int $depth Depth of the menu. Used for padding.
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* @param stdClass $args An object of wp_nav_menu() arguments.
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* @return string The menu item output with social icon.
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*/
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function twentynineteen_nav_menu_social_icons( $item_output, $item, $depth, $args ) {
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// Change SVG icon inside social links menu if there is supported URL.
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if ( 'social' === $args->theme_location ) {
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$svg = twentynineteen_get_social_link_svg( $item->url, 26 );
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if ( empty( $svg ) ) {
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$svg = twentynineteen_get_icon_svg( 'link' );
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}
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$item_output = str_replace( $args->link_after, '</span>' . $svg, $item_output );
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}
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return $item_output;
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}
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add_filter( 'walker_nav_menu_start_el', 'twentynineteen_nav_menu_social_icons', 10, 4 );
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/**
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* Add a dropdown icon to top-level menu items.
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*
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* @param string $item_output The menu item's starting HTML output.
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* @param WP_Post $item Menu item data object.
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* @param int $depth Depth of the menu. Used for padding.
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* @param stdClass $args An object of wp_nav_menu() arguments.
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* @return string Nav menu item start element.
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*/
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function twentynineteen_add_dropdown_icons( $item_output, $item, $depth, $args ) {
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// Only add class to 'top level' items on the 'primary' menu.
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if ( ! isset( $args->theme_location ) || 'menu-1' !== $args->theme_location ) {
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return $item_output;
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}
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if ( in_array( 'mobile-parent-nav-menu-item', $item->classes, true ) && isset( $item->original_id ) ) {
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// Inject the keyboard_arrow_left SVG inside the parent nav menu item, and let the item link to the parent item.
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// @todo Only do this for nested submenus? If on a first-level submenu, then really the link could be "#" since the desire is to remove the target entirely.
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$link = sprintf(
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'<button class="menu-item-link-return" tabindex="-1">%s',
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twentynineteen_get_icon_svg( 'chevron_left', 24 )
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);
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// Replace opening <a> with <button>.
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$item_output = preg_replace(
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'/<a\s.*?>/',
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$link,
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$item_output,
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1 // Limit.
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);
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// Replace closing </a> with </button>.
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$item_output = preg_replace(
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'#</a>#i',
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'</button>',
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$item_output,
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1 // Limit.
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);
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} elseif ( in_array( 'menu-item-has-children', $item->classes, true ) ) {
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// Add SVG icon to parent items.
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$icon = twentynineteen_get_icon_svg( 'keyboard_arrow_down', 24 );
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$item_output .= sprintf(
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'<button class="submenu-expand" tabindex="-1">%s</button>',
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$icon
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);
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}
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return $item_output;
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}
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add_filter( 'walker_nav_menu_start_el', 'twentynineteen_add_dropdown_icons', 10, 4 );
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