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uikit-menu-walker.php
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uikit-menu-walker.php
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<?php
class Walker_UIKIT extends Walker {
private $has_children = false;
/**
* What the class handles.
*
* @see Walker::$tree_type
* @since 3.0.0
* @var string
*/
var $tree_type = array(
'post_type',
'taxonomy',
'custom'
);
/**
* Database fields to use.
*
* @see Walker::$db_fields
* @since 3.0.0
* @todo Decouple this.
* @var array
*/
var $db_fields = array(
'parent' => 'menu_item_parent',
'id' => 'db_id'
);
/**
* Starts the list before the elements are added.
*
* @see Walker::start_lvl()
*
* @since 3.0.0
*
* @param string $output Passed by reference. Used to append additional content.
* @param int $depth Depth of menu item. Used for padding.
* @param array $args An array of arguments. @see wp_nav_menu()
*/
function start_lvl(&$output, $depth = 0, $args = array()) {
$indent = str_repeat("\t", $depth);
if ($this->has_children && $depth == 0) {
$output.= "$indent<div class=\"uk-dropdown uk-dropdown-navbar uk-dropdown-width-1\">\n";
// $output.= "$indent<div class=\"uk-grid\">\n";
// $output.= "$indent<div class=\"uk-width-1-1\">\n";
$indent = "\t$indent";
$output.= "\n$indent<ul class=\"uk-nav uk-nav-navbar\">\n";
} else {
$output.= "\n$indent<ul class=\"uk-nav-sub\">\n";
}
}
/**
* Ends the list of after the elements are added.
*
* @see Walker::end_lvl()
*
* @since 3.0.0
*
* @param string $output Passed by reference. Used to append additional content.
* @param int $depth Depth of menu item. Used for padding.
* @param array $args An array of arguments. @see wp_nav_menu()
*/
function end_lvl(&$output, $depth = 0, $args = array()) {
$indent = str_repeat("\t", $depth);
$output.= "$indent</ul>\n";
}
/**
* Start the element output.
*
* @see Walker::start_el()
*
* @since 3.0.0
*
* @param string $output Passed by reference. Used to append additional content.
* @param object $item Menu item data object.
* @param int $depth Depth of menu item. Used for padding.
* @param array $args An array of arguments. @see wp_nav_menu()
* @param int $id Current item ID.
*/
function start_el(&$output, $item, $depth = 0, $args = array() , $id = 0) {
$indent = ($depth) ? str_repeat("\t", $depth) : '';
$class_names = $value = '';
$classes = empty($item->classes) ? array() : (array)$item->classes;
$classes[] = 'menu-item-' . $item->ID;
/**
* Filter the CSS class(es) applied to a menu item's <li>.
*
* @since 3.0.0
*
* @param array $classes The CSS classes that are applied to the menu item's <li>.
* @param object $item The current menu item.
* @param array $args An array of arguments. @see wp_nav_menu()
*/
$class_names = join(' ', apply_filters('nav_menu_css_class', array_filter($classes) , $item, $args));
$this->has_children = in_array('menu-item-has-children', $classes);
if (in_array('current-menu-item', $classes)) {
$class_names.= ' uk-active';
}
if ($this->has_children) {
$class_names.= ' uk-parent';
}
if (in_array('current-menu-ancestor', $classes)) {
$class_names.= ' uk-active';
}
$class_names = $class_names ? ' class="' . esc_attr($class_names) . '"' : '';
/**
* Filter the ID applied to a menu item's <li>.
*
* @since 3.0.1
*
* @param string The ID that is applied to the menu item's <li>.
* @param object $item The current menu item.
* @param array $args An array of arguments. @see wp_nav_menu()
*/
$id = apply_filters('nav_menu_item_id', 'menu-item-' . $item->ID, $item, $args);
$id = $id ? ' id="' . esc_attr($id) . '"' : '';
$data_dropdown = '';
if ($this->has_children && $depth == 0) {
$data_dropdown = ' data-uk-dropdown';
}
$output.= $indent . '<li' . $id . $value . $class_names . $data_dropdown . '>';
$atts = array();
$atts['title'] = !empty($item->attr_title) ? $item->attr_title : '';
$atts['target'] = !empty($item->target) ? $item->target : '';
$atts['rel'] = !empty($item->xfn) ? $item->xfn : '';
$atts['href'] = !empty($item->url) ? $item->url : '';
/**
* Filter the HTML attributes applied to a menu item's <a>.
*
* @since 3.6.0
*
* @param array $atts {
* The HTML attributes applied to the menu item's <a>, empty strings are ignored.
*
* @type string $title The title attribute.
* @type string $target The target attribute.
* @type string $rel The rel attribute.
* @type string $href The href attribute.
* }
* @param object $item The current menu item.
* @param array $args An array of arguments. @see wp_nav_menu()
*/
$atts = apply_filters('nav_menu_link_attributes', $atts, $item, $args);
$attributes = '';
foreach ($atts as $attr => $value) {
if (!empty($value)) {
$value = ('href' === $attr) ? esc_url($value) : esc_attr($value);
$attributes.= ' ' . $attr . '="' . $value . '"';
}
}
$item_output = $args->before;
$item_output .= '<a'. $attributes .'>';
/** This filter is documented in wp-includes/post-template.php */
$item_output .= $args->link_before . apply_filters( 'the_title', $item->title, $item->ID ) . $args->link_after;
$item_output .= '</a>';
$item_output .= $args->after;
/**
* Filter a menu item's starting output.
*
* The menu item's starting output only includes $args->before, the opening <a>,
* the menu item's title, the closing </a>, and $args->after. Currently, there is
* no filter for modifying the opening and closing <li> for a menu item.
*
* @since 3.0.0
*
* @param string $item_output The menu item's starting HTML output.
* @param object $item Menu item data object.
* @param int $depth Depth of menu item. Used for padding.
* @param array $args An array of arguments. @see wp_nav_menu()
*/
$output.= apply_filters('walker_nav_menu_start_el', $item_output, $item, $depth, $args);
}
/**
* Ends the element output, if needed.
*
* @see Walker::end_el()
*
* @since 3.0.0
*
* @param string $output Passed by reference. Used to append additional content.
* @param object $item Page data object. Not used.
* @param int $depth Depth of page. Not Used.
* @param array $args An array of arguments. @see wp_nav_menu()
*/
function end_el(&$output, $item, $depth = 0, $args = array()) {
$classes = empty($item->classes) ? array() : (array)$item->classes;
$has_children = in_array('menu-item-has-children', $classes);
if ($has_children && $depth == 0) {
$output.= "</div>\n";
}
$output.= "</li>\n";
}
public static function fallback( $args ) {
if ( current_user_can( 'manage_options' ) ) {
extract( $args );
$fb_output = null;
if ( $container ) {
$fb_output = '<' . $container;
if ( $container_id )
$fb_output .= ' id="' . $container_id . '"';
if ( $container_class )
$fb_output .= ' class="' . $container_class . '"';
$fb_output .= '>';
}
$fb_output .= '<ul';
if ( $menu_id )
$fb_output .= ' id="' . $menu_id . '"';
if ( $menu_class )
$fb_output .= ' class="' . $menu_class . '"';
$fb_output .= '>';
$fb_output .= '<li><a href="' . admin_url( 'nav-menus.php' ) . '">Add a menu</a></li>';
$fb_output .= '</ul>';
if ( $container )
$fb_output .= '</' . $container . '>';
echo $fb_output;
}
}
} // Walker_Nav_Menu