<?php
// +----------------------------------------------------------------------+
// | PHP Version 4 |
// +----------------------------------------------------------------------+
// | Copyright (c) 1997-2002 The PHP Group |
// +----------------------------------------------------------------------+
// | This source file is subject to version 2.02 of the PHP license, |
// | that is bundled with this package in the file LICENSE, and is |
// | available at through the world-wide-web at |
// | http://www.php.net/license/2_02.txt. |
// | If you did not receive a copy of the PHP license and are unable to |
// | obtain it through the world-wide-web, please send a note to |
// | license@php.net so we can mail you a copy immediately. |
// +----------------------------------------------------------------------+
// | Author: Richard Heyes <richard@phpguru.org> |
// | Harald Radi <harald.radi@nme.at> |
// +----------------------------------------------------------------------+
//
// $Id: TreeMenu.php,v 1.2 2002/06/18 23:28:35 richard Exp $
/**
* HTML_TreeMenu Class
*
* A simple couple of PHP classes and some not so simple
* Jabbascript which produces a tree menu. In IE this menu
* is dynamic, with branches being collapsable. In IE5+ the
* status of the collapsed/open branches persists across page
* refreshes.In any other browser the tree is static. Code is
* based on work of Harald Radi.
*
* Usage.
*
* After installing the package, copy the example php script to
* your servers document. Also place the TreeMenu.js and the images
* folder in the same place. Running the script should then produce
* the tree.
*
* @author Richard Heyes <richard@php.net>
* @author Harald Radi <harald.radi@nme.at>
* @access public
* @version 1.0
* @package HTML_TreeMenu
*/
class HTML_TreeMenu
{
/**
* Indexed array of subnodes
* @var array
*/
var $items;
/**
* The layer ID
* @var string
*/
var $layer;
/**
* Path to the images
* @var string
*/
var $images;
/**
* Name of the object
* This should not be changed without changing
* the javascript.
* @var string
*/
var $menuobj;
/**
* Constructor
*
* @access public
* @param string $layer The name of the layer to add the HTML to.
* In browsers that do not support document.all
* or document.getElementById(), document.write()
* is used, and thus this layer name has no effect.
* @param string $images The path to the images folder.
*/
function HTML_TreeMenu($layer, $images, $linkTarget = '_self')
{
$this->menuobj = 'objTreeMenu';
$this->layer = $layer;
$this->images = $images;
$this->linkTarget = $linkTarget;
}
/**
* This function adds an item to the the tree.
*
* @access public
* @param object $menu The node to add. This object should be
* a HTML_TreeNode object.
* @return object Returns a reference to the new node inside
* the tree.
*/
function &addItem($menu)
{
$this->items[] = $menu;
return $this->items[count($this->items) - 1];
}
/**
* This function prints the menu Jabbascript code. Should
* be called *AFTER* your layer tag has been printed. In the
* case of older browsers, eg Navigator 4, The menu HTML will
* appear where this function is called.
*
* @access public
*/
function printMenu()
{
echo "\n";
echo '<script language="javascript" type="text/javascript">' . "\n\t";
echo sprintf('%s = new TreeMenu("%s", "%s", "%s", "%s");',
$this->menuobj,
$this->layer,
$this->images,
$this->menuobj,
$this->linkTarget);
echo "\n";
if (isset($this->items)) {
for ($i=0; $i<count($this->items); $i++) {
$this->items[$i]->_printMenu($this->menuobj . ".n[$i]");
}
}
echo sprintf("%s.drawMenu();\n%s.resetBranches();\n</script>", $this->menuobj, $this->menuobj);
}
} // HTML_TreeMenu
/**
* HTML_TreeNode class
*
* This class is supplementary to the above and provides a way to
* add nodes to the tree. A node can have other nodes added to it.
*
* @author Richard Heyes <richard@php.net>
* @author Harald Radi <harald.radi@nme.at>
* @access public
* @version 1.0
* @package HTML_TreeMenu
*/
class HTML_TreeNode
{
/**
* The text for this node.
* @var string
*/
var $text;
/**
* The link for this node.
* @var string
*/
var $link;
/**
* The icon for this node.
* @var string
*/
var $icon;
/**
* Indexed array of subnodes
* @var array
*/
var $items;
/**
* Whether this node is expanded or not
* @var bool
*/
var $expanded;
/**
* Constructor
*
* @access public
* @param string $text The description text for this node
* @param string $link The link for the text
* @param string $icon Optional icon to appear to the left of the text
* @param bool $expanded Whether this node is expanded or not (IE only)
*/
function HTML_TreeNode($text, $link, $icon = null, $expanded = false)
{
$this->text = ($text == null) ? "" : $text;
$this->link = ($link == null) ? "" : $link;
$this->icon = ($icon == null) ? "" : $icon;
$this->expanded = $expanded;
}
/**
* Adds a new subnode to this node.
*
* @access public
* @param object $node The new node
*/
function &addItem($node)
{
$this->items[] = $node;
return $this->items[count($this->items) - 1];
}
/**
* Prints jabbascript for this particular node.
*
* @access private
* @param string $prefix The jababscript object to assign this node to.
*/
function _printMenu($prefix)
{
echo sprintf("\t%s = new TreeNode('%s', %s, %s, %s);\n",
$prefix,
$this->text,
!empty($this->icon) ? "'" . $this->icon . "'" : 'null',
!empty($this->link) ? "'" . $this->link . "'" : 'null',
$this->expanded ? 'true' : 'false');
if (!empty($this->items)) {
for ($i=0; $i<count($this->items); $i++) {
$this->items[$i]->_printMenu($prefix . ".n[$i]");
}
}
}
}
?>
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