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wp_dropdown_pages() and walk_page_tree() 

git-svn-id: http://svn.automattic.com/wordpress/trunk@3573 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
ryan 2006-02-28 03:57:08 +00:00
parent be1f99d329
commit 803c970527
2 changed files with 160 additions and 69 deletions
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78
wp-includes/functions.php
View File

@ -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;

147
wp-includes/template-functions-post.php
View File

@ -295,7 +295,6 @@ function &get_page_children($page_id, $pages) {
function &get_pages($args = '') {
global $wpdb;
parse_str($args, $r);
if ( !isset($r['child_of']) )
@ -304,6 +303,8 @@ function &get_pages($args = '') {
$r['sort_column'] = 'post_title';
if ( !isset($r['sort_order']) )
$r['sort_order'] = 'ASC';
if ( !isset($r['hierarchical']) )
$r['hierarchical'] = 1;
$exclusions = '';
if ( !empty($r['exclude']) ) {
@ -327,12 +328,55 @@ function &get_pages($args = '') {
// Update cache.
update_page_cache($pages);
if ( $r['child_of'] )
if ( $r['child_of'] || $r['hierarchical'] )
$pages = & get_page_children($r['child_of'], $pages);
return $pages;
}
function wp_dropdown_pages($args = '') {
parse_str($args, $r);
if ( !isset($r['depth']) )
$r['depth'] = 0;
if ( !isset($r['child_of']) )
$r['child_of'] = 0;
if ( !isset($r['echo']) )
$r['echo'] = 1;
if ( !isset($r['selected']) )
$r['selected'] = 0;
extract($r);
$pages = get_pages($args);
$output = '';
if ( ! empty($pages) ) {
$output = "<select name='page_id'>\n";
$output .= walk_page_tree($pages, $depth, '_page_dropdown_element', '', '', '', $selected);
$output .= "</select>\n";
}
$output = apply_filters('wp_dropdown_pages', $output);
if ( $echo )
echo $output;
return $output;
}
function _page_dropdown_element($output, $page, $depth, $selected) {
$pad = str_repeat('&nbsp;', $depth * 3);
$output .= "\t<option value=\"$page->ID\"";
if ( $page->ID == $selected )
$output .= ' selected="selected"';
$output .= '>';
$title = wp_specialchars($page->post_title);
$output .= "$pad$title";
$output .= "</option>\n";
return $output;
}
function wp_list_pages($args = '') {
parse_str($args, $r);
@ -340,6 +384,8 @@ function wp_list_pages($args = '') {
$r['depth'] = 0;
if ( !isset($r['show_date']) )
$r['show_date'] = '';
if ( !isset($r['date_format']) )
$r['date_format'] = get_settings('date_format');
if ( !isset($r['child_of']) )
$r['child_of'] = 0;
if ( !isset($r['title_li']) )
@ -350,42 +396,16 @@ function wp_list_pages($args = '') {
$output = '';
// Query pages.
$pages = & get_pages($args);
if ( $pages ) {
$pages = get_pages($args);
if ( !empty($pages) ) {
if ( $r['title_li'] )
$output .= '<li class="pagenav">' . $r['title_li'] . '<ul>';
// Now loop over all pages that were selected
$page_tree = Array();
foreach ( $pages as $page ) {
// set the title for the current page
$page_tree[$page->ID]['title'] = $page->post_title;
$page_tree[$page->ID]['name'] = $page->post_name;
global $wp_query;
$current_page = $wp_query->get_queried_object_id();
$output .= walk_page_tree($pages, $depth, '_page_list_element_start', '_page_list_element_end', '_page_list_level_start', '_page_list_level_end', $current_page, $r['show_date'], $r['date_format']);
// set the selected date for the current page
// depending on the query arguments this is either
// the createtion date or the modification date
// as a unix timestamp. It will also always be in the
// ts field.
if ( !empty($r['show_date']) ) {
if ( 'modified' == $r['show_date'] )
$page_tree[$page->ID]['ts'] = $page->post_modified;
else
$page_tree[$page->ID]['ts'] = $page->post_date;
}
// The tricky bit!!
// Using the parent ID of the current page as the
// array index we set the curent page as a child of that page.
// We can now start looping over the $page_tree array
// with any ID which will output the page links from that ID downwards.
if ( $page->post_parent != $page->ID)
$page_tree[$page->post_parent]['children'][] = $page->ID;
}
// Output of the pages starting with child_of as the root ID.
// child_of defaults to 0 if not supplied in the query.
$output .= _page_level_out($r['child_of'],$page_tree, $r, 0, false);
if ( $r['title_li'] )
$output .= '</ul></li>';
}
@ -398,50 +418,43 @@ function wp_list_pages($args = '') {
return $output;
}
function _page_list_level_start($output, $depth) {
$indent = str_repeat("\t", $depth);
$output .= "$indent<ul>\n";
return $output;
}
function _page_level_out($parent, $page_tree, $args, $depth = 0, $echo = true) {
global $wp_query;
$queried_obj = $wp_query->get_queried_object();
$output = '';
function _page_list_level_end($output, $depth) {
$indent = str_repeat("\t", $depth);
$output .= "$indent</ul>\n";
return $output;
}
function _page_list_element_start($output, $page, $depth, $current_page, $show_date, $date_format) {
if ( $depth )
$indent = str_repeat("\t", $depth);
//$indent = join('', array_fill(0,$depth,"\t"));
if ( !is_array($page_tree[$parent]['children']) )
return false;
foreach ( $page_tree[$parent]['children'] as $page_id ) {
$cur_page = $page_tree[$page_id];
$title = $cur_page['title'];
$css_class = 'page_item';
if ( $page_id == $queried_obj->ID )
if ( $page->ID == $current_page )
$css_class .= ' current_page_item';
$output .= $indent . '<li class="' . $css_class . '"><a href="' . get_page_link($page_id) . '" title="' . wp_specialchars($title) . '">' . $title . '</a>';
$output .= $indent . '<li class="' . $css_class . '"><a href="' . get_page_link($page->ID) . '" title="' . wp_specialchars($page->post_title) . '">' . $page->post_title . '</a>';
if ( isset($cur_page['ts']) ) {
$format = get_settings('date_format');
if ( isset($args['date_format']) )
$format = $args['date_format'];
$output .= " " . mysql2date($format, $cur_page['ts']);
}
if ( isset($cur_page['children']) && is_array($cur_page['children']) ) {
$new_depth = $depth + 1;
if ( !$args['depth'] || $depth < ($args['depth']-1) ) {
$output .= "$indent<ul>\n";
$output .= _page_level_out($page_id, $page_tree, $args, $new_depth, false);
$output .= "$indent</ul>\n";
}
}
$output .= "$indent</li>\n";
}
if ( $echo )
echo $output;
if ( !empty($show_date) ) {
if ( 'modified' == $show_date )
$time = $page->post_modified;
else
$time = $page->post_date;
$output .= " " . mysql2date($date_format, $time);
}
return $output;
}
function _page_list_element_end($output, $page, $depth) {
$output .= "</li>\n";
return $output;
}