zencart css_flyout_menu_主程序赏析

<?php
//
// +----------------------------------------------------------------------+
// |zen-cart Open Source E-commerce |
// +----------------------------------------------------------------------+
// | Copyright (c) 2003 The zen-cart developers |
// | |
// | http://www.zen-cart.com/index.php |
// | |
// | Portions Copyright (c) 2003 osCommerce |
// +----------------------------------------------------------------------+
// | This source file is subject to version 2.0 of the GPL license, |
// | that is bundled with this package in the file LICENSE, and is |
// | available through the world-wide-web at the following url: |
// | http://www.zen-cart.com/license/2_0.txt. |
// | If you did not receive a copy of the zen-cart license and are unable |
// | to obtain it through the world-wide-web, please send a note to |
// | license@zen-cart.com so we can mail you a copy immediately. |
// +----------------------------------------------------------------------+
// $Id: categories_ul_generator.php 2004-07-11 DrByteZen $
// based on site_map.php v1.0.1 by networkdad 2004-06-04
// Fix for line 48 provided by Paulm, uploaded by Kelvyn

class zen_categories_ul_generator {
var $root_category_id = 0,
$max_level = 6,
$data = array(),
$root_start_string = '',
$root_end_string = '',
$parent_start_string = '',
$parent_end_string = '',

$parent_group_start_string = '<ul%s>',
$parent_group_end_string = "</ul>",

$child_start_string = '<li%s>',
$child_end_string = "</li>",

$spacer_string = '',
$spacer_multiplier = 1;

var $document_types_list = ' (3) '; // acceptable format example: ' (3, 4, 9, 22, 18) '

function zen_categories_ul_generator($load_from_database = true) {
global $languages_id, $db;
$this->data = array();
$categories_query = "select c.categories_id, cd.categories_name, c.parent_id
from " . TABLE_CATEGORIES . " c, " . TABLE_CATEGORIES_DESCRIPTION . " cd
where c.categories_id = cd.categories_id
and c.categories_status=1 " .
// "and c.categories_id = ptc.category_id " .
// "and ptc.category_id = cd.categories_id " .
// "and ptc.product_type_id not in " . $this->document_types_list . "
" and cd.language_id = '" . (int)$_SESSION['languages_id'] . "'
order by c.parent_id, c.sort_order, cd.categories_name";
$categories = $db->Execute($categories_query);
while (!$categories->EOF) {
$this->data[$categories->fields['parent_id']][$categories->fields['categories_id']] = array('name' => $categories->fields['categories_name'], 'count' => 0);
$categories->MoveNext();
}
//DEBUG: These lines will dump out the array for display and troubleshooting:
//foreach ($this->data as $pkey=>$pvalue) {
// foreach ($this->data[$pkey] as $key=>$value) { echo '['.$pkey.']'.$key . '=>' . $value['name'] . '<br>'; }
//}
}

function buildBranch($parent_id, $level = 0, $submenu=false, $parent_link='') {
$result = sprintf($this->parent_group_start_string, ($submenu==true) ? ' class="level'. ($level+1) . '"' : '' );

if (($this->data[$parent_id])) {
foreach ($this->data[$parent_id] as $category_id => $category) {
$category_link = $parent_link . $category_id;
if (($this->data[$category_id])) {
$result .= sprintf($this->child_start_string, ($submenu==true) ? ' class="submenu"' : '');
} else {


if (($this->data[$category_id]) && ($submenu==false)) {
$result .= sprintf($this->parent_start_string, ($submenu==true) ? ' class="level'.($level+1) . '"' : '');
$result .= sprintf($this->child_start_string, ($submenu==true) ? ' class="submenu"' : '');
} else {
$result .= sprintf($this->child_start_string, '');
}
}
if ($level == 0) {
$result .= $this->root_start_string;
}
$result .= str_repeat($this->spacer_string, $this->spacer_multiplier * 1) . '<a href="' . zen_href_link(FILENAME_DEFAULT, 'cPath=' . $category_link) . '">';
$result .= $category['name'];
$result .= '</a>';

if ($level == 0) {
$result .= $this->root_end_string;
}

if (($this->data[$category_id])) {
$result .= $this->parent_end_string;
}

if (($this->data[$category_id]) && (($this->max_level == '0') || ($this->max_level > $level+1))) {
$result .= $this->buildBranch($category_id, $level+1, $submenu, $category_link . '_');
}
$result .= $this->child_end_string;

}
}

$result .= $this->parent_group_end_string;

return $result;
}

function buildTree($submenu=false) {
return $this->buildBranch($this->root_category_id, '', $submenu);
}
}

?>