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wp_dropdown_pages() and walk_page_tree()

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git-svn-id: https://develop.svn.wordpress.org/trunk@3573 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Ryan Boren
2006-02-28 03:57:08 +00:00
parent 966f2abfe2
commit 68b90359ea
2 changed files with 160 additions and 69 deletions
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78
wp-includes/functions.php
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@@ -745,6 +745,84 @@ function &get_page(&$page, $output = OBJECT) {
}
}
function walk_page_tree($pages, $to_depth, $start_element_callback, $end_element_callback = '', $start_level_callback = '', $end_level_callback = '') {
$args = array_slice(func_get_args(), 6);
$parents = array();
$depth = 0;
$previous_page = '';
$output = '';
$last_page->post_parent = 0;
$last_page->post_id = 0;
$pages[] = $last_page;
foreach ( $pages as $page ) {
if ( !empty($previous_page) && ($page->post_parent == $previous_page->ID) ) {
// Previous page is my parent. Descend a level.
array_unshift($parents, $page);
$depth++;
if ( !$to_depth || ($depth < $to_depth) )
if ( !empty($start_level_callback) ) {
$cb_args = array_merge( array($output, $depth), $args);
$output = call_user_func_array($start_level_callback, $cb_args);
}
} else if ( $depth && ($page->post_parent == $parents[0]->ID) ) {
// On the same level as previous page.
if ( !$to_depth || ($depth < $to_depth) ) {
if ( !empty($end_element_callback) ) {
$cb_args = array_merge( array($output, $previous_page, $depth), $args);
$output = call_user_func_array($end_element_callback, $cb_args);
}
}
} else if ( $depth ) {
// Ascend one or more levels.
if ( !$to_depth || ($depth < $to_depth) ) {
if ( !empty($end_element_callback) ) {
$cb_args = array_merge( array($output, $previous_page, $depth), $args);
$output = call_user_func_array($end_element_callback, $cb_args);
}
}
while ( $parent = array_shift($parents)) {
$depth--;
if ( !$to_depth || ($depth < $to_depth) ) {
if ( !empty($end_level_callback) ) {
$cb_args = array_merge( array($output, $depth), $args);
$output = call_user_func_array($end_level_callback, $cb_args);
}
if ( !empty($end_element_callback) ) {
$cb_args = array_merge( array($output, $parent, $depth), $args);
$output = call_user_func_array($end_element_callback, $cb_args);
}
}
if ( $page->post_parent == $parent->ID ) {
break;
}
}
} else if ( !empty($previous_page) ) {
// Close off previous page.
if ( !$to_depth || ($depth < $to_depth) ) {
if ( !empty($end_element_callback) ) {
$cb_args = array_merge( array($output, $previous_page, $depth), $args);
$output = call_user_func_array($end_element_callback, $cb_args);
}
}
}
// Start the page.
if ( !$to_depth || ($depth < $to_depth) ) {
if ( !empty($start_element_callback) && ($page->ID != 0) ) {
$cb_args = array_merge( array($output, $page, $depth), $args);
$output = call_user_func_array($start_element_callback, $cb_args);
}
}
$previous_page = $page;
}
return $output;
}
function set_category_path($cat) {
$cat->fullpath = '/' . $cat->category_nicename;
$path = $cat->fullpath;