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<?php
/**
* Create HTML list of nav menu items.
*
* @package WordPress
* @since 3.0.0
* @uses Walker
*/
class UberMenuWalker extends Walker_Nav_Menu {
var $item_stack = array();
var $current_umitem;
var $setting_defaults;
var $auto_child = '';
var $trashbin = array();
var $ignore_items = array(); //Don't print these items
var $ignore_children = array();
var $detached_content = array();
var $detached = false;
var $detached_context = 0;
var $offset_depth = 0;
/**
* What the class handles.
*
* @see Walker::$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' );
function __construct(){
$this->setting_defaults = ubermenu_menu_item_setting_defaults();
$this->setting_defaults['submenu_type_calc'] = 'unk'; //Unknown
$this->setting_defaults['item_display_calc'] = 'unk'; //Unknown
}
/* Recursive function to remove all children */
function clear_children( &$children_elements , $id ){
if( empty( $children_elements[ $id ] ) ) return;
foreach( $children_elements[ $id ] as $child ){
$this->clear_children( $children_elements , $child->ID );
}
unset( $children_elements[ $id ] );
}
function display_element( $element, &$children_elements, $max_depth, $depth=0, $args, &$output ) {
if ( !$element )
return;
//Offset Depth
$original_depth = $depth;
$depth = $depth + $this->offset_depth;
$id_field = $this->db_fields['id'];
if( $this->get_ignore( $element->$id_field ) ){
unset( $children_elements[$element->$id_field] );
return;
}
//Autocolumn
// if( $this->offset_depth > 0 && $element->menu_item_parent == 0 ){
// $autocolumns = 3;
// if( $element->ID == 533 ){
// uberp( $children_elements );
// // echo 'hi';
// // uberp( $element );
// }
// }
//Automatically add rows!
if( isset( $children_elements[ $element->$id_field ] ) && count( $children_elements[ $element->$id_field ] ) > 0 ){
$has_row = false;
$has_nonrow = false;
foreach( $children_elements[ $element->$id_field ] as $child_el ){
if( $child_el->type_label == '[UberMenu Row]' ){
$has_row = true;
//break;
}
else{
$has_nonrow = true;
}
}
if( $has_row ){
$element->classes[] = 'advanced-sub';
//If user hasn't added rows, we need to add them
if( $has_nonrow){
$row_count = 0;
$current_row = false;
$current_row_id = 0;
$id = $element->$id_field;
$my_children = $children_elements[ $id ];
$children_elements[ $id ] = array();
//Loop through items, wrap in rows
foreach( $my_children as $k => $child_el ){
//If this is a row, reset current vals
if( $child_el->type_label == '[UberMenu Row]' ){
$current_row = false;
$current_row_id = 0;
$children_elements[ $id ][] = $child_el;
}
//If this isn't a row, wrap it in a row
else{
//If we don't have a current row, make one
if( !$current_row_id ){
$row_count++;
$current_row_id = $element->$id_field.'_auto_'.$row_count;
$current_row = new UberMenu_dummy_item( $current_row_id , 'row' , 'Dummy Row' , $element->$id_field );
$children_elements[$current_row_id] = array();
//Insert row in appropriate spot.
$children_elements[$id][] = $current_row;
}
//Add Children to Row
$children_elements[$current_row_id][] = $child_el;
//Remove Children from Sub?
//unset( $children_elements[$id][$k] ); // No because we reset array above
}
}
}
}
}
//Walker_Nav_Menu::display_element( $element, $children_elements, $max_depth, $depth, $args, $output );
//display this element - wp-includes/class-wp-walker.php
$has_children = ! empty( $children_elements[$element->$id_field] );
if ( isset( $args[0] ) && is_array( $args[0] ) ){
$args[0]['has_children'] = $has_children;
}
$cb_args = array_merge( array(&$output, $element, $depth), $args);
$id = $element->$id_field; // Moved up
// Setup UberMenuItem object
$umitem_obect_class = apply_filters( 'ubermenu_item_object_class' , 'UberMenuItemDefault' , $element , $id , $this->auto_child );
//echo '<br/><br/>'.str_repeat(" ", $depth*5).'['. $id .'] '. $umitem_obect_class . ' :: <strong>' . $element->title.'</strong>';
//echo $element->$id_field . ' :: ' .$umitem_obect_class.'<br/>';
$umitem = new $umitem_obect_class( $output , $element , $depth, $cb_args[3], $id , $this , $has_children ); //The $args that get passed to start_el are $cb[3] -- i.e. the 4the element in the array merged above
//Ignoring? Check again after initialization so that item can disable itself
if( $this->get_ignore( $element->$id_field ) ){
unset( $children_elements[$element->$id_field] );
return;
}
//Disabled?
$display_on = $umitem->display_on();
//If this item is not yet disabled, allow its status to be filtered
if( $display_on ){
$display_on = apply_filters( 'ubermenu_display_item' , true , $this , $element , $max_depth, $depth, $args , $umitem );
}
//If the item is disabled, kill its children, Lannister-style
if( !$display_on ){
$this->clear_children( $children_elements , $id );
return;
}
//If submenu disabled, clear children but don't return
if( $umitem->getSetting( 'disable_submenu_on_mobile' ) == 'on' ){
if( ubermenu_is_mobile( 'disable_submenu_on_mobile' ) ){
$this->clear_children( $children_elements , $id );
$umitem->disable_children();
}
}
//Filter
// Manipulate Structure
if( $umitem->alter_structure() ){
$umitem->alter( $children_elements );
}
$this->push_item( $umitem );
call_user_func_array(array($this, 'start_el'), $cb_args);
//Check if we are ignoring children
if( !$this->get_ignore_children( $id ) ){
// descend only when the depth is right and there are childrens for this element
if ( ($max_depth == 0 || $max_depth > $depth+1 ) && isset( $children_elements[$id]) ) {
foreach( $children_elements[ $id ] as $child ){
$this->auto_child = $umitem->getAutoChild();
if ( !isset($newlevel) ) {
$newlevel = true;
//start the child delimiter
$cb_args = array_merge( array(&$output, $depth), $args);
call_user_func_array(array($this, 'start_lvl'), $cb_args);
}
$this->display_element( $child, $children_elements, $max_depth, $depth + 1, $args, $output );
$this->auto_child = '';
}
//Unset this item's children elements
unset( $children_elements[ $id ] ); //TODO!!!
}
}
if ( isset($newlevel) && $newlevel ){
//end the child delimiter
$cb_args = array_merge( array(&$output, $depth), $args);
call_user_func_array(array($this, 'end_lvl'), $cb_args);
}
//end this element
$cb_args = array_merge( array(&$output, $element, $depth), $args);
call_user_func_array(array($this, 'end_el'), $cb_args);
//Cleanup when we hit top level items (original depth/without offset matters for menu segments)
if( $depth == 0 || $original_depth == 0 ){
//Make sure we don't print trash - actually, these elements don't exist, just child indexes
foreach( $this->trashbin as $_trash_id => $on ){
//echo '<br/>$$unset '.$_trash_id.'<br/>';
unset( $children_elements[$_trash_id] );
}
if( $depth == 0 ) $this->trashbin = array(); //reset trashbin only at very top
}
}
/**
* 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);
$this->current_umitem->start_lvl();
}
/**
* 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);
$this->current_umitem->end_lvl();
}
/**
* 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 ) {
$this->current_umitem->start_el();
}
/**
* 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() ) {
$this->current_umitem->end_el();
$this->pop_item();
}
function feed_trash_collector( $index ){
if( isset( $this->trashbin[$index] ) && $this->trashbin[$index] ){
return true;
}
$this->trashbin[$index] = true;
return false;
}
function push_item( $umitem ){
$this->item_stack[] = $umitem;
$this->current_umitem = $umitem;
}
function pop_item(){
$umitem = array_pop( $this->item_stack );
$this->current_umitem = $this->current_item();
}
function current_item(){
return end( $this->item_stack );
}
function parent_item(){
return isset( $this->item_stack[count($this->item_stack)-2] ) ?
$this->item_stack[count($this->item_stack)-2] :
false;
}
function grandparent_item(){
return isset( $this->item_stack[count($this->item_stack)-3] ) ?
$this->item_stack[count($this->item_stack)-3] :
false;
}
function ancestor_item( $k ){
return isset( $this->item_stack[count($this->item_stack)-$k] ) ?
$this->item_stack[count($this->item_stack)-$k] :
false;
}
function closest_item_type( $type ){
for( $k = count( $this->item_stack ) - 1 ; $k >= 0 ; $k-- ){
if( $this->item_stack[$k]->getType() == $type ){
return $this->item_stack[$k];
}
}
}
/* Traverse until an ancestor returns a term ID, otherwise return -1 */
function find_parent_term(){
//up( $this->item_stack , 1 );
for( $k = count( $this->item_stack ) - 1 ; $k >= 0 ; $k-- ){
$term = $this->item_stack[$k]->get_term_id();
if( $term ) return $term;
}
return -1;
}
/* Traverse until an ancestor returns a post ID, otherwise return -1 */
function find_parent_post(){
for( $k = count( $this->item_stack ) - 1 ; $k >= 0 ; $k-- ){
$post = $this->item_stack[$k]->get_post_id();
if( $post ) return $post;
}
return -1;
}
function find_inherited_setting( $setting_id , $ignore = '' , $offset = 0 ){
for( $k = count( $this->item_stack ) - ( $offset + 1 ) ; $k >= 0 ; $k-- ){
$item = $this->item_stack[$k];
$settings = $item->get_settings();
if( isset( $settings[$setting_id] ) && $settings[$setting_id] !== $ignore ){
return $settings[$setting_id];
}
}
return $this->setting_defaults[$setting_id];
}
function alert_dynamic_alter( $id , $source_id , $umitem , &$children ){
for( $k = count( $this->item_stack ) - 1 ; $k >= 0 ; $k-- ){
if( $this->item_stack[$k]->dynamic_alter( $id, $source_id , $umitem , $children ) ){
return;
}
}
return -1;
}
function setAutoChild( $auto_child ){
$this->auto_child = $auto_child;
}
function getAutoChild(){
return $this->auto_child;
}
function set_ignore( $id , $ignore = true ){
$this->ignore_items[$id] = $ignore;
}
function get_ignore( $id ){
if( isset( $this->ignore_items[$id] ) && $this->ignore_items[$id] ){
return true;
}
return false;
}
function set_ignore_children( $id , $ignore = true ){
$this->ignore_children[$id] = $ignore;
}
function get_ignore_children( $id ){
if( isset( $this->ignore_children[$id] ) && $this->ignore_children[$id] ){
return true;
}
return false;
}
function set_offset_depth( $depth ){
$this->offset_depth = $depth;
}
function get_offset_depth(){
return $this->offset_depth;
}
//passed Key (ID of item) may not be unique if any ancestors
//are Dynamic Terms or Dynamic Posts
function unique_path_key( $key = '' ){
//$key = ;
for( $k = count( $this->item_stack ) - 1 ; $k >= 0 ; $k-- ){
$term = $this->item_stack[$k]->get_term_id();
if( $term ) $key.= '_t'.$term;
$post = $this->item_stack[$k]->get_post_id();
if( $post ) $key.= '_p'.$post;
}
return $key;
}
}