/**
* Custom walker. Add the widgets into the menu.
*
* @see Walker::start_el()
*
* @since 1.0
*
* @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", $depth) : '';
if (property_exists($item, 'megamenu_settings')) {
$settings = $item->megamenu_settings;
} else {
$settings = Mega_Menu_Nav_Menus::get_menu_item_defaults();
}
// Item Class
$classes = empty($item->classes) ? array() : (array) $item->classes;
$classes[] = 'menu-item-' . $item->ID;
$class = join(' ', apply_filters('megamenu_nav_menu_css_class', array_filter($classes), $item, $args));
// strip widget classes back to how they're intended to be output
$class = str_replace("mega-menu-widget-class-", "", $class);
// Item ID
$id = esc_attr(apply_filters('megamenu_nav_menu_item_id', "mega-menu-item-{$item->ID}", $item, $args));
$output .= "<li class='{$class}' id='{$id}'>";
// output the widgets
if ($item->type == 'widget' && $item->content) {
$item_output = $item->content;
} else {
$atts = array();
$atts['title'] = !empty($item->attr_title) ? $item->attr_title : '';
$atts['target'] = !empty($item->target) ? $item->target : '';
$atts['class'] = '';
$atts['rel'] = !empty($item->xfn) ? $item->xfn : '';
if ($settings['disable_link'] != 'true') {
$atts['href'] = !empty($item->url) ? $item->url : '';
}
if (isset($settings['icon']) && $settings['icon'] != 'disabled') {
$atts['class'] = $settings['icon'];
}
$atts = apply_filters('megamenu_nav_menu_link_attributes', $atts, $item, $args);
if (strlen($atts['class'])) {
$atts['class'] = $atts['class'] . ' mega-menu-link';
} else {
$atts['class'] = 'mega-menu-link';
}
$attributes = '';
foreach ($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' . $attributes . '>';
if ($settings['hide_text'] == 'true' && $depth == 0) {
/** This filter is documented in wp-includes/post-template.php */
} else {
$item_output .= $args->link_before . apply_filters('megamenu_the_title', $item->title, $item->ID) . $args->link_after;
}
$item_output .= '</a>';
$item_output .= $args->after;
}
$output .= apply_filters('megamenu_walker_nav_menu_start_el', $item_output, $item, $depth, $args);
}
/**
* Set up the class
*
* @since 1.4
*/
private function init()
{
if (isset($_POST['menu_item_id'])) {
$this->menu_item_id = absint($_POST['menu_item_id']);
$saved_settings = array_filter((array) get_post_meta($this->menu_item_id, '_megamenu', true));
$this->menu_item_meta = array_merge(Mega_Menu_Nav_Menus::get_menu_item_defaults(), $saved_settings);
}
if (isset($_POST['menu_item_depth'])) {
$this->menu_item_depth = absint($_POST['menu_item_depth']);
}
if (isset($_POST['menu_id'])) {
$this->menu_id = absint($_POST['menu_id']);
}
}
/**
* Returns an array of immediate child menu items for the current item
*
* @since 1.5
* @return array
*/
private function get_second_level_menu_items()
{
$items = array();
// check we're using a valid menu ID
if (!is_nav_menu($this->menu_id)) {
return $items;
}
$menu = wp_get_nav_menu_items($this->menu_id);
if (count($menu)) {
foreach ($menu as $item) {
// find the child menu items
if ($item->menu_item_parent == $this->menu_item_id) {
$saved_settings = array_filter((array) get_post_meta($item->ID, '_megamenu', true));
$settings = array_merge(Mega_Menu_Nav_Menus::get_menu_item_defaults(), $saved_settings);
$items[] = array('id' => $item->ID, 'title' => $item->title, 'mega_columns' => $settings['mega_menu_columns']);
}
}
}
return $items;
}
/**
* Apply classes to nav menu items
*
* @since 1.8.2
* @param array $items - All menu item objects
* @param object $args
* @return array - Menu objects including widgets
*/
public function apply_megamenu_classes_to_menu_items($items, $args)
{
$parents = array();
foreach ($items as $item) {
if ($item->depth == 0) {
$item->classes[] = 'align-' . $item->megamenu_settings['align'];
$item->classes[] = 'menu-' . $item->megamenu_settings['type'];
}
if ($item->megamenu_settings['hide_arrow'] == 'true') {
$item->classes[] = 'hide-arrow';
}
if ($item->megamenu_settings['hide_text'] == 'true' && $item->depth == 0) {
$item->classes[] = 'hide-text';
}
if ($item->megamenu_settings['item_align'] != 'left' && $item->depth == 0) {
$item->classes[] = 'item-align-' . $item->megamenu_settings['item_align'];
}
if ($item->megamenu_settings['disable_link'] == 'true') {
$item->classes[] = 'disable-link';
}
// add column classes for second level menu items displayed in mega menus
if ($item->depth == 1) {
$parent_settings = array_filter((array) get_post_meta($item->menu_item_parent, '_megamenu', true));
if (isset($parent_settings['type']) && $parent_settings['type'] == 'megamenu') {
$parent_settings = array_merge(Mega_Menu_Nav_Menus::get_menu_item_defaults(), $parent_settings);
$span = $item->megamenu_settings['mega_menu_columns'];
$total_columns = $parent_settings['panel_columns'];
if ($total_columns >= $span) {
$item->classes[] = "menu-columns-{$span}-of-{$total_columns}";
$column_count = $span;
} else {
$item->classes[] = "menu-columns-{$total_columns}-of-{$total_columns}";
$column_count = $total_columns;
}
if (!isset($parents[$item->menu_item_parent])) {
$parents[$item->menu_item_parent] = $column_count;
} else {
$parents[$item->menu_item_parent] = $parents[$item->menu_item_parent] + $column_count;
if ($parents[$item->menu_item_parent] > $total_columns) {
$parents[$item->menu_item_parent] = $column_count;
$item->classes[] = 'menu-clear';
}
}
}
}
}
return $items;
}
/**
* Append the widget objects to the menu array before the
* menu is processed by the walker.
*
* @since 1.0
* @param array $items - All menu item objects
* @param object $args
* @return array - Menu objects including widgets
*/
public function add_widgets_to_menu($items, $args)
{
// make sure we're working with a Mega Menu
if (!is_a($args->walker, 'Mega_Menu_Walker')) {
return $items;
}
$widget_manager = new Mega_Menu_Widget_Manager();
$default_columns = apply_filters("megamenu_default_columns", 1);
// apply saved metadata to each menu item
foreach ($items as $item) {
$saved_settings = array_filter((array) get_post_meta($item->ID, '_megamenu', true));
$item->megamenu_settings = array_merge(Mega_Menu_Nav_Menus::get_menu_item_defaults(), $saved_settings);
}
$items = apply_filters("megamenu_nav_menu_objects_before", $items, $args);
foreach ($items as $item) {
// only look for widgets on top level items
if ($item->menu_item_parent == 0 && $item->megamenu_settings['type'] == 'megamenu') {
$panel_widgets = $widget_manager->get_widgets_for_menu_id($item->ID);
if (count($panel_widgets)) {
if (!in_array('menu-item-has-children', $item->classes)) {
$item->classes[] = 'menu-item-has-children';
}
$cols = 0;
foreach ($panel_widgets as $widget) {
$menu_item = array('type' => 'widget', 'title' => '', 'content' => $widget_manager->show_widget($widget['widget_id']), 'menu_item_parent' => $item->ID, 'db_id' => 0, 'ID' => $widget['widget_id'], 'classes' => array("menu-item", "menu-item-type-widget", "menu-columns-{$widget['mega_columns']}-of-{$item->megamenu_settings['panel_columns']}", "menu-widget-class-" . $widget_manager->get_widget_class($widget['widget_id'])));
if ($cols == 0) {
$menu_item['classes'][] = "menu-clear";
}
$cols = $cols + $widget['mega_columns'];
if ($cols > $item->megamenu_settings['panel_columns']) {
$menu_item['classes'][] = "menu-clear";
$cols = $widget['mega_columns'];
}
$items[] = (object) $menu_item;
}
}
}
}
$items = apply_filters("megamenu_nav_menu_objects_after", $items, $args);
return $items;
}