0, 'show_date' => '', 'date_format' => get_option('date_format'), 'child_of' => 0, 'exclude' => '', 'title_li' => __('Pages'), 'echo' => 1, 'authors' => '', 'sort_column' => 'menu_order'); $r = array_merge($defaults, $r); $output = ''; $current_page = 0; // sanitize, mostly to keep spaces out $r['exclude'] = preg_replace('[^0-9,]', '', $r['exclude']); // Allow plugins to filter an array of excluded pages $r['exclude'] = implode(',', apply_filters('wp_list_pages_excludes', explode(',', $r['exclude']))); // Query pages. $pages = get_pages($r); if ( !empty($pages) ) { if ( $r['title_li'] ) $output .= '

' . $r['title_li'] . '

'; global $wp_query; if ( is_page() ) $current_page = $wp_query->get_queried_object_id(); $output .= iwalk_page_tree($pages, $r['depth'], $current_page, $r); if ( $r['title_li'] ) $output .= '

'; } $output = apply_filters('ideas_list_pages', $output); if ( $r['echo'] ) echo $output; else return $output; } function iwalk_page_tree() { $walker = new iWalker_Page; $args = func_get_args(); return call_user_func_array(array(&$walker, 'iwalk'), $args); } class iWalker { var $tree_type; var $db_fields; //abstract callbacks function istart_lvl($output) { return $output; } function iend_lvl($output) { return $output; } function istart_el($output) { return $output; } function iend_el($output) { return $output; } function iparent_start($output) { return $output; } function iparent_end($output) { return $output; } function iwalk($elements, $to_depth) { $args = array_slice(func_get_args(), 2); $parents = array(); $depth = 1; $previous_element = ''; $output = ''; //padding at the end $last_element->post_parent = 0; $last_element->post_id = 0; $elements[] = $last_element; $id_field = $this->db_fields['id']; $parent_field = $this->db_fields['parent']; $flat = ($to_depth == -1) ? true : false; $top_level = ($depth == 1) ? true : false; foreach ( $elements as $element ) { // If flat, start and end the element and skip the level checks. if ( $flat) { // Start the element. if ( isset($element->$id_field) && $element->$id_field != 0 ) { $cb_args = array_merge( array($output, $element, $depth - 1), $args); $output = call_user_func_array(array(&$this, 'istart_el'), $cb_args); } // End the element. if ( isset($element->$id_field) && $element->$id_field != 0 ) { $cb_args = array_merge( array($output, $element, $depth - 1), $args); $output = call_user_func_array(array(&$this, 'iend_el'), $cb_args); } continue; } // Walk the tree. if ( !empty($previous_element) && ($element->$parent_field == $previous_element->$id_field) ) { // Previous element is my parent. Descend a level. array_unshift($parents, $previous_element); if ( !$to_depth || ($depth < $to_depth) ) { //only descend if we're below $to_depth $cb_args = array_merge( array($output, $depth), $args); $output = call_user_func_array(array(&$this, 'istart_lvl'), $cb_args); } else if ( $to_depth && $depth == $to_depth ) { // If we've reached depth, end the previous element. $cb_args = array_merge( array($output, $previous_element, $depth), $args); $output = call_user_func_array(array(&$this, 'iend_el'), $cb_args); } $depth++; //always do this so when we start the element further down, we know where we are } else if ( $element->$parent_field == $previous_element->$parent_field) { // On the same level as previous element. if ( !$to_depth || ($depth <= $to_depth) ) { $cb_args = array_merge( array($output, $previous_element, $depth - 1), $args); $output = call_user_func_array(array(&$this, 'iend_el'), $cb_args); } } else if ( $depth > 1 ) { // Ascend one or more levels. if ( !$to_depth || ($depth <= $to_depth) ) { $cb_args = array_merge( array($output, $previous_element, $depth - 1), $args); $output = call_user_func_array(array(&$this, 'iend_el'), $cb_args); } while ( $parent = array_shift($parents) ) { $depth--; if ( !$to_depth || ($depth < $to_depth) ) { $cb_args = array_merge( array($output, $depth), $args); $output = call_user_func_array(array(&$this, 'iend_lvl'), $cb_args); $cb_args = array_merge( array($output, $parent, $depth - 1), $args); $output = call_user_func_array(array(&$this, 'iend_el'), $cb_args); } if ( $element->$parent_field == $parents[0]->$id_field ) { break; } } } else if ( !empty($previous_element) ) { // Close off previous element. if ( !$to_depth || ($depth <= $to_depth) ) { $cb_args = array_merge( array($output, $previous_element, $depth - 1), $args); $output = call_user_func_array(array(&$this, 'iend_el'), $cb_args); } } // Start the element. if ( !$to_depth || ($depth <= $to_depth) ) { if ( $element->$id_field != 0 ) { $cb_args = array_merge( array($output, $element, $depth - 1), $args); $output = call_user_func_array(array(&$this, 'istart_el'), $cb_args); } } $previous_element = $element; } return $output; } } class iWalker_Page extends iWalker { var $tree_type = 'page'; var $db_fields = array ('parent' => 'post_parent', 'id' => 'ID'); //TODO: decouple this function istart_lvl($output, $depth) { $indent = str_repeat("\t", $depth); $output .= "\n$indent

\n"; return $output; } function iend_lvl($output, $depth) { $indent = str_repeat("\t", $depth); $output .= "$indent

\n"; return $output; } function istart_el($output, $page, $depth, $current_page, $args) { if ( $depth ) $indent = str_repeat("\t", $depth); extract($args, EXTR_SKIP); $css_class = 'page_item'; $_current_page = get_page( $current_page ); if ( $page->ID == $current_page ) $css_class .= ' current_page_item'; elseif ( $_current_page && $page->ID == $_current_page->post_parent ) $css_class .= ' current_page_parent'; $output .= $indent . '

' . apply_filters('the_title', $page->post_title) . ''; if ( !empty($show_date) ) { if ( 'modified' == $show_date ) $time = $page->post_modified; else $time = $page->post_date; $output .= " " . mysql2date($date_format, $time); } return $output; } function iend_el($output, $page, $depth) { $output .= "

\n"; return $output; } function iparent_start($output, $page, $depth, $current_page, $args) { if ( $depth ) $indent = str_repeat("\t", $depth); extract($args, EXTR_SKIP); $css_class = 'page_item'; $_current_page = get_page( $current_page ); if ( $page->ID == $current_page ) $css_class .= ' current_page_item'; elseif ( $_current_page && $page->ID == $_current_page->post_parent ) $css_class .= ' current_page_parent'; $output .= $indent . '

\n"; return $output; } }