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March 5, 2013 12:12
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WORDPRESS: NAVWALK
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<?php | |
/** | |
* Class Name: twitter_bootstrap_nav_walker | |
* GitHub URI: https://github.com/twittem/wp-bootstrap-navwalker | |
* Description: A custom Wordpress nav walker to implement the Twitter Bootstrap 2 (https://github.com/twitter/bootstrap/) dropdown navigation using the Wordpress built in menu manager. | |
* Version: 1.2.2 | |
* Author: Edward McIntyre - @twittem | |
* Licence: WTFPL 2.0 (http://sam.zoy.org/wtfpl/COPYING) | |
*/ | |
class twitter_bootstrap_nav_walker extends Walker_Nav_Menu { | |
/** | |
* @see Walker::start_lvl() | |
* @since 3.0.0 | |
* | |
* @param string $output Passed by reference. Used to append additional content. | |
* @param int $depth Depth of page. Used for padding. | |
*/ | |
function start_lvl( &$output, $depth ) { | |
$indent = str_repeat( "\t", $depth ); | |
$output .= "\n$indent<ul class=\"dropdown-menu\">\n"; | |
} | |
/** | |
* @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 int $current_page Menu item ID. | |
* @param object $args | |
*/ | |
function start_el( &$output, $item, $depth = 0, $args = array(), $id = 0 ) { | |
global $wp_query; | |
$indent = ( $depth ) ? str_repeat( "\t", $depth ) : ''; | |
if (strcasecmp($item->title, 'divider')) { | |
$class_names = $value = ''; | |
$classes = empty( $item->classes ) ? array() : (array) $item->classes; | |
$classes[] = ($item->current) ? 'active' : ''; | |
$classes[] = 'menu-item-' . $item->ID; | |
$class_names = join( ' ', apply_filters( 'nav_menu_css_class', array_filter( $classes ), $item, $args ) ); | |
if ($args->has_children && $depth > 0) { | |
$class_names .= ' dropdown-submenu'; | |
} else if($args->has_children && $depth === 0) { | |
$class_names .= ' dropdown'; | |
} | |
$class_names = $class_names ? ' class="' . esc_attr( $class_names ) . '"' : ''; | |
$id = apply_filters( 'nav_menu_item_id', 'menu-item-'. $item->ID, $item, $args ); | |
$id = $id ? ' id="' . esc_attr( $id ) . '"' : ''; | |
$output .= $indent . '<li' . $id . $value . $class_names .'>'; | |
$attributes = ! empty( $item->attr_title ) ? ' title="' . esc_attr( $item->attr_title ) .'"' : ''; | |
$attributes .= ! empty( $item->target ) ? ' target="' . esc_attr( $item->target ) .'"' : ''; | |
$attributes .= ! empty( $item->xfn ) ? ' rel="' . esc_attr( $item->xfn ) .'"' : ''; | |
$attributes .= ! empty( $item->url ) ? ' href="' . esc_attr( $item->url ) .'"' : ''; | |
$attributes .= ($args->has_children) ? ' data-toggle="dropdown" data-target="#" class="dropdown-toggle"' : ''; | |
$item_output = $args->before; | |
$item_output .= '<a'. $attributes .'>'; | |
$item_output .= $args->link_before . apply_filters( 'the_title', $item->title, $item->ID ) . $args->link_after; | |
$item_output .= ($args->has_children && $depth == 0) ? ' <span class="caret"></span></a>' : '</a>'; | |
$item_output .= $args->after; | |
$output .= apply_filters( 'walker_nav_menu_start_el', $item_output, $item, $depth, $args ); | |
} else { | |
$output .= $indent . '<li class="divider">'; | |
} | |
} | |
/** | |
* Traverse elements to create list from elements. | |
* | |
* Display one element if the element doesn't have any children otherwise, | |
* display the element and its children. Will only traverse up to the max | |
* depth and no ignore elements under that depth. | |
* | |
* This method shouldn't be called directly, use the walk() method instead. | |
* | |
* @see Walker::start_el() | |
* @since 2.5.0 | |
* | |
* @param object $element Data object | |
* @param array $children_elements List of elements to continue traversing. | |
* @param int $max_depth Max depth to traverse. | |
* @param int $depth Depth of current element. | |
* @param array $args | |
* @param string $output Passed by reference. Used to append additional content. | |
* @return null Null on failure with no changes to parameters. | |
*/ | |
function display_element( $element, &$children_elements, $max_depth, $depth=0, $args, &$output ) { | |
if ( !$element ) { | |
return; | |
} | |
$id_field = $this->db_fields['id']; | |
//display this element | |
if ( is_array( $args[0] ) ) | |
$args[0]['has_children'] = ! empty( $children_elements[$element->$id_field] ); | |
else if ( is_object( $args[0] ) ) | |
$args[0]->has_children = ! empty( $children_elements[$element->$id_field] ); | |
$cb_args = array_merge( array(&$output, $element, $depth), $args); | |
call_user_func_array(array(&$this, 'start_el'), $cb_args); | |
$id = $element->$id_field; | |
// 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 $child ){ | |
if ( !isset($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 ); | |
} | |
unset( $children_elements[ $id ] ); | |
} | |
if ( isset($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); | |
} | |
} | |
?> |
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