/
TreeMenu.php
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TreeMenu.php
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<?php
// +-----------------------------------------------------------------------+
// | Copyright (c) 2002-2003, Richard Heyes, Harald Radi |
// | All rights reserved. |
// | |
// | Redistribution and use in source and binary forms, with or without |
// | modification, are permitted provided that the following conditions |
// | are met: |
// | |
// | o Redistributions of source code must retain the above copyright |
// | notice, this list of conditions and the following disclaimer. |
// | o Redistributions in binary form must reproduce the above copyright |
// | notice, this list of conditions and the following disclaimer in the |
// | documentation and/or other materials provided with the distribution.|
// | o The names of the authors may not be used to endorse or promote |
// | products derived from this software without specific prior written |
// | permission. |
// | |
// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
// | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
// | OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
// | SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
// | LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
// | DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
// | THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
// | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
// | OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
// | |
// +-----------------------------------------------------------------------+
// | Author: Richard Heyes <richard@phpguru.org> |
// | Harald Radi <harald.radi@nme.at> |
// +-----------------------------------------------------------------------+
//
// $Id$
/**
* 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 root. Also place the TreeMenu.js and the
* images folder in the same place. Running the script should
* then produce the tree.
*
* Thanks go to Chip Chapin (http://www.chipchapin.com) for many
* excellent ideas and improvements.
*
* @author Richard Heyes <richard@php.net>
* @author Harald Radi <harald.radi@nme.at>
* @access public
* @package HTML_TreeMenu
*/
class HTML_TreeMenu
{
/**
* Indexed array of subnodes
* @var array
*/
var $items;
/**
* Constructor
*
* @access public
*/
function __construct()
{
// Not much to do here :(
}
/**
* This function adds an item to the the tree.
*
* @access public
* @param object $node The node to add. This object should be
* a HTML_TreeNode object.
* @return object Returns a reference to the new node inside
* the tree.
*/
function &addItem(&$node)
{
$this->items[] = &$node;
return $this->items[count($this->items) - 1];
}
/**
* Import method for creating HTML_TreeMenu objects/structures
* out of existing tree objects/structures. Currently supported
* are Wolfram Kriesings' PEAR Tree class, and Richard Heyes' (me!)
* Tree class (available here: http://www.phpguru.org/). This
* method is intended to be used statically, eg:
* $treeMenu = &HTML_TreeMenu::createFromStructure($myTreeStructureObj);
*
* @param array $params An array of parameters that determine
* how the import happens. This can consist of:
* structure => The tree structure
* type => The type of the structure, currently
* can be either 'heyes' or 'kriesing'
* nodeOptions => Default options for each node
*
* @return object The resulting HTML_TreeMenu object
*/
function createFromStructure($params)
{
if (!isset($params['nodeOptions'])) {
$params['nodeOptions'] = array();
}
switch (@$params['type']) {
/**
* Wolfram Kriesings' PEAR Tree class
*/
case 'kriesing':
$className = strtolower(get_class($params['structure']->dataSourceClass));
$isXMLStruct = strpos($className, '_xml') !== false ? true : false;
// Get the entire tree, the $nodes are sorted like in the tree view
// from top to bottom, so we can easily put them in the nodes
$nodes = $params['structure']->getNode();
// Make a new menu and fill it with the values from the tree
$treeMenu = new HTML_TreeMenu();
$curNode[0] = &$treeMenu; // we need the current node as the reference to the
foreach ($nodes as $aNode) {
$events = array();
$data = array();
// In an XML, all the attributes are saved in an array, but since they might be
// used as the parameters, we simply extract them here if we handle an XML-structure
if ($isXMLStruct && sizeof($aNode['attributes'])) {
foreach ($aNode['attributes'] as $key => $val) {
if (!$aNode[$key]) { // dont overwrite existing values
$aNode[$key] = $val;
}
}
}
// Process all the data that are saved in $aNode and put them in the data and/or events array
foreach ($aNode as $key => $val) {
if (!is_array($val)) {
// Dont get the recursive data in here! they are always arrays
if (substr($key, 0, 2) == 'on') { // get the events
$events[$key] = $val;
}
// I put it in data too, so in case an options starts with 'on' its also passed to the node ... not too cool i know
$data[$key] = $val;
}
}
// Normally the text is in 'name' in the Tree class, so we check both but 'text' is used if found
$data['text'] = $aNode['text'] ? $aNode['text'] : $aNode['name'];
// Add the item to the proper node
$thisNode = &$curNode[$aNode['level']]->addItem(new HTML_TreeNode($data, $events));
$curNode[$aNode['level'] + 1] = &$thisNode;
}
break;
/**
* Richard Heyes' (me!) second (array based) Tree class
*/
case 'heyes_array':
// Need to create a HTML_TreeMenu object ?
if (!isset($params['treeMenu'])) {
$treeMenu = new HTML_TreeMenu();
$parentID = 0;
} else {
$treeMenu = &$params['treeMenu'];
$parentID = $params['parentID'];
}
// Loop thru the trees nodes
foreach ($params['structure']->getChildren($parentID) as $nodeID) {
$data = $params['structure']->getData($nodeID);
$parentNode = &$treeMenu->addItem(new HTML_TreeNode(array_merge($params['nodeOptions'], $data)));
// Recurse ?
if ($params['structure']->hasChildren($nodeID)) {
$recurseParams['type'] = 'heyes_array';
$recurseParams['parentID'] = $nodeID;
$recurseParams['nodeOptions'] = $params['nodeOptions'];
$recurseParams['structure'] = &$params['structure'];
$recurseParams['treeMenu'] = &$parentNode;
HTML_TreeMenu::createFromStructure($recurseParams);
}
}
break;
/**
* Richard Heyes' (me!) original OO based Tree class
*/
case 'heyes':
default:
// Need to create a HTML_TreeMenu object ?
if (!isset($params['treeMenu'])) {
$treeMenu = new HTML_TreeMenu();
} else {
$treeMenu = &$params['treeMenu'];
}
// Loop thru the trees nodes
foreach ($params['structure']->nodes->nodes as $node) {
$tag = $node->getTag();
$parentNode = &$treeMenu->addItem(new HTML_TreeNode(array_merge($params['nodeOptions'], $tag)));
// Recurse ?
if (!empty($node->nodes->nodes)) {
$recurseParams['structure'] = $node;
$recurseParams['nodeOptions'] = $params['nodeOptions'];
$recurseParams['treeMenu'] = &$parentNode;
HTML_TreeMenu::createFromStructure($recurseParams);
}
}
break;
}
return $treeMenu;
}
/**
* Creates a treeMenu from XML. The structure of your XML should be
* like so:
*
* <treemenu>
* <node text="First node" icon="folder.gif" expandedIcon="folder-expanded.gif" />
* <node text="Second node" icon="folder.gif" expandedIcon="folder-expanded.gif">
* <node text="Sub node" icon="folder.gif" expandedIcon="folder-expanded.gif" />
* </node>
* <node text="Third node" icon="folder.gif" expandedIcon="folder-expanded.gif">
* </treemenu>
*
* Any of the options you can supply to the HTML_TreeNode constructor can be supplied as
* attributes to the <node> tag. If there are no subnodes for a particular node, you can
* use the XML shortcut <node ... /> instead of <node ... ></node>. The $xml argument can
* be either the XML as a string, or an pre-created XML_Tree object. Also, this method
* REQUIRES my own Tree class to work (http://phpguru.org/tree.html). If this has not
* been include()ed or require()ed this method will die().
*
* @param mixed $xml This can be either a string containing the XML, or an XML_Tree object
* (the PEAR::XML_Tree package).
* @return object The HTML_TreeMenu object
*/
function createFromXML($xml)
{
if (!class_exists('Tree')) {
die('Could not find Tree class');
}
// Supplied $xml is a string
if (is_string($xml)) {
require_once('XML/Tree.php');
$xmlTree = new XML_Tree();
$xmlTree->getTreeFromString($xml);
// Supplied $xml is an XML_Tree object
} else {
$xmlTree = $xml;
}
// Now process the XML_Tree object, setting the XML attributes
// to be the tag data (with out the XML tag name or contents).
$treeStructure = Tree::createFromXMLTree($xmlTree, true);
$treeStructure->nodes->traverse(create_function('&$node', '$tagData = $node->getTag(); $node->setTag($tagData["attributes"]);'));
return HTML_TreeMenu::createFromStructure(array('structure' => $treeStructure));
}
} // 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
* @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;
/**
* The icon to show when expanded for this node.
* @var string
*/
var $expandedIcon;
/**
* The css class for this node
* @var string
*/
var $cssClass;
/**
* The link target for this node
* @var string
*/
var $linkTarget;
/**
* Indexed array of subnodes
* @var array
*/
var $items;
/**
* Whether this node is expanded or not
* @var bool
*/
var $expanded;
/**
* Whether this node is dynamic or not
* @var bool
*/
var $isDynamic;
/**
* Should this node be made visible?
* @var bool
*/
var $ensureVisible;
/**
* The parent node. Null if top level
* @var object
*/
var $parent;
/**
* Unique ID of this node
* @var int
*/
//commented out because it was causing Documents page to not show
//because of this redeclaration of $parent. I do not know what the
// author's intention was in using this name twice or if it was a mistake
//var $parent;
/**
* Javascript event handlers;
* @var array
*/
var $events;
var $id;
/**
* Constructor
*
* @access public
* @param array $options An array of options which you can pass to change
* the way this node looks/acts. This can consist of:
* o text The title of the node, defaults to blank
* o link The link for the node, defaults to blank
* o icon The icon for the node, defaults to blank
* o expandedIcon The icon to show when the node is expanded
* o cssClass The CSS class for this node, defaults to blank
* o expanded The default expanded status of this node, defaults to false
* This doesn't affect non dynamic presentation types
* o linkTarget Target for the links. Defaults to linkTarget of the
* HTML_TreeMenu_Presentation.
* o isDynamic If this node is dynamic or not. Only affects
* certain presentation types.
* o ensureVisible If true this node will be made visible despite the expanded
* settings, and client side persistence. Will not affect
* some presentation styles, such as Listbox. Default is false
* @param array $events An array of javascript events and the corresponding event handlers.
* Additionally to the standard javascript events you can specify handlers
* for the 'onexpand', 'oncollapse' and 'ontoggle' events which will be fired
* whenever a node is collapsed and/or expanded.
*/
function __construct($options = array(), $events = array())
{
$this->text = '';
$this->link = '';
$this->icon = '';
$this->expandedIcon = '';
$this->cssClass = '';
$this->expanded = false;
$this->isDynamic = true;
$this->ensureVisible = false;
$this->linkTarget = null;
$this->id = null;
$this->parent = null;
$this->events = $events;
foreach ($options as $option => $value) {
$this->$option = $value;
}
}
/**
* Allows setting of various parameters after the initial
* constructor call. Possible options you can set are:
* o text
* o link
* o icon
* o cssClass
* o expanded
* o isDynamic
* o ensureVisible
* ie The same options as in the constructor
*
* @access public
* @param string $option Option to set
* @param string $value Value to set the option to
*/
function setOption($option, $value)
{
$this->$option = $value;
}
/**
* Adds a new subnode to this node.
*
* @access public
* @param object $node The new node
*/
function &addItem(&$node)
{
$node->parent = &$this;
$this->items[] = &$node;
/**
* If the subnode has ensureVisible set it needs
* to be handled, and all parents set accordingly.
*/
if ($node->ensureVisible) {
$this->_ensureVisible();
}
return $this->items[count($this->items) - 1];
}
/**
* Private function to handle ensureVisible stuff
*
* @access private
*/
function _ensureVisible()
{
$this->ensureVisible = true;
$this->expanded = true;
if (!is_null($this->parent)) {
$this->parent->_ensureVisible();
}
}
} // HTML_TreeNode
/**
* HTML_TreeMenu_Presentation class
*
* Base class for other presentation classes to
* inherit from.
*/
class HTML_TreeMenu_Presentation
{
/**
* The TreeMenu structure
* @var object
*/
var $menu;
/**
* Base constructor simply sets the menu object
*
* @param object $structure The menu structure
*/
function __construct(&$structure)
{
$this->menu = &$structure;
}
/**
* Prints the HTML generated by the toHTML() method.
* toHTML() must therefore be defined by the derived
* class.
*
* @access public
* @param array Options to set. Any options taken by
* the presentation class can be specified
* here.
*/
function printMenu($options = array())
{
foreach ($options as $option => $value) {
$this->$option = $value;
}
echo $this->toHTML();
}
}
/**
* HTML_TreeMenu_DHTML class
*
* This class is a presentation class for the tree structure
* created using the TreeMenu/TreeNode. It presents the
* traditional tree, static for browsers that can't handle
* the DHTML.
*/
class HTML_TreeMenu_DHTML extends HTML_TreeMenu_Presentation
{
/**
* Dynamic status of the treemenu. If true (default) this has no effect. If
* false it will override all dynamic status vars and set the menu to be
* fully expanded an non-dynamic.
*/
var $isDynamic;
/**
* Path to the images
* @var string
*/
var $images;
/**
* Target for the links generated
* @var string
*/
var $linkTarget;
/**
* Whether to use clientside persistence or not
* @var bool
*/
var $userPersistence;
/**
* The default CSS class for the nodes
*/
var $defaultClass;
/**
* Whether to skip first level branch images
* @var bool
*/
var $noTopLevelImages;
var $maxDepth;
var $usePersistence;
/**
* Constructor, takes the tree structure as
* an argument and an array of options which
* can consist of:
* o images - The path to the images folder. Defaults to "images"
* o linkTarget - The target for the link. Defaults to "_self"
* o defaultClass - The default CSS class to apply to a node. Default is none.
* o usePersistence - Whether to use clientside persistence. This persistence
* is achieved using cookies. Default is true.
* o noTopLevelImages - Whether to skip displaying the first level of images if
* there is multiple top level branches.
* o maxDepth - The maximum depth of indentation. Useful for ensuring
* deeply nested trees don't go way off to the right of your
* page etc. Defaults to no limit.
*
* And also a boolean for whether the entire tree is dynamic or not.
* This overrides any perNode dynamic settings.
*
* @param object $structure The menu structure
* @param array $options Array of options
* @param bool $isDynamic Whether the tree is dynamic or not
*/
function __construct(&$structure, $options = array(), $isDynamic = true)
{
parent::__construct($structure);
$this->isDynamic = $isDynamic;
// Defaults
$this->images = 'public/images';
$this->maxDepth = 0; // No limit
$this->linkTarget = '_self';
$this->defaultClass = '';
$this->usePersistence = true;
$this->noTopLevelImages = false;
foreach ($options as $option => $value) {
$this->$option = $value;
}
}
/**
* Returns the HTML for the menu. This method can be
* used instead of printMenu() to use the menu system
* with a template system.
*
* @access public
* @return string The HTML for the menu
*/
function toHTML()
{
static $count = 0;
$menuObj = 'objTreeMenu_' . ++$count;
$html = "\n";
$html .= '<script>' . "\n\t";
$html .= sprintf(
'%s = new TreeMenu("%s", "%s", "%s", "%s", %s, %s);',
$menuObj,
$this->images,
$menuObj,
$this->linkTarget,
$this->defaultClass,
$this->usePersistence ? 'true' : 'false',
$this->noTopLevelImages ? 'true' : 'false'
);
$html .= "\n";
/**
* Loop through subnodes
*/
if (isset($this->menu->items)) {
for ($i = 0; $i < count($this->menu->items); $i++) {
$html .= $this->_nodeToHTML($this->menu->items[$i], $menuObj);
}
}
$html .= sprintf("\n\t%s.drawMenu();", $menuObj);
$html .= sprintf("\n\t%s.writeOutput();", $menuObj);
if ($this->usePersistence && $this->isDynamic) {
$html .= sprintf("\n\t%s.resetBranches();", $menuObj);
}
$html .= "\n</script>";
return $html;
}
/**
* Prints a node of the menu
*
* @access private
*/
function _nodeToHTML($nodeObj, $prefix, $return = 'newNode', $currentDepth = 0, $maxDepthPrefix = null)
{
$prefix = empty($maxDepthPrefix) ? $prefix : $maxDepthPrefix;
$expanded = $this->isDynamic ? ($nodeObj->expanded ? 'true' : 'false') : 'true';
$isDynamic = $this->isDynamic ? ($nodeObj->isDynamic ? 'true' : 'false') : 'false';
$html = sprintf(
"\t %s = %s.addItem(new TreeNode(jsAttr(%s), jsAttr(%s), jsAttr(%s), %s, %s, '%s', '%s', jsAttr(%s)));\n",
$return,
$prefix,
js_escape($nodeObj->text),
!empty($nodeObj->icon) ? js_escape($nodeObj->icon) : 'null',
!empty($nodeObj->link) ? js_escape($nodeObj->link) : 'null',
$expanded,
$isDynamic,
$nodeObj->cssClass,
$nodeObj->linkTarget,
!empty($nodeObj->expandedIcon) ? js_escape($nodeObj->expandedIcon) : 'null'
);
foreach ($nodeObj->events as $event => $handler) {
$html .= sprintf(
"\t %s.setEvent('%s', '%s');\n",
$return,
$event,
str_replace(array("\r", "\n", "'"), array('\r', '\n', "\'"), $handler)
);
}
if ($this->maxDepth > 0 and $currentDepth == $this->maxDepth) {
$maxDepthPrefix = $prefix;
}
/**
* Loop through subnodes
*/
if (!empty($nodeObj->items)) {
for ($i = 0; $i < count($nodeObj->items); $i++) {
$html .= $this->_nodeToHTML($nodeObj->items[$i], $return, $return . '_' . ($i + 1), $currentDepth + 1, $maxDepthPrefix);
}
}
return $html;
}
} // End class HTML_TreeMenu_DHTML
/**
* HTML_TreeMenu_Listbox class
*
* This class presents the menu as a listbox
*/
class HTML_TreeMenu_Listbox extends HTML_TreeMenu_Presentation
{
/**
* The text that is displayed in the first option
* @var string
*/
var $promoText;
/**
* The character used for indentation
* @var string
*/
var $indentChar;
/**
* How many of the indent chars to use
* per indentation level
* @var integer
*/
var $indentNum;
/**
* Target for the links generated
* @var string
*/
var $linkTarget;
var $submitText;
/**
* Constructor
*
* @param object $structure The menu structure
* @param array $options Options whic affect the display of the listbox.
* These can consist of:
* o promoText The text that appears at the the top of the listbox
* Defaults to "Select..."
* o indentChar The character to use for indenting the nodes
* Defaults to " "
* o indentNum How many of the indentChars to use per indentation level
* Defaults to 2
* o linkTarget Target for the links. Defaults to "_self"
* o submitText Text for the submit button. Defaults to "Go"
*/
function __construct($structure, $options = array())
{
parent::__construct($structure);
$this->promoText = null;
$this->indentChar = ' ';
$this->indentNum = 2;
$this->linkTarget = '_self';
$this->submitText = 'Go';
foreach ($options as $option => $value) {
$this->$option = $value;
}
}
/**
* Returns the HTML generated
*/
function toHTML()
{
static $count = 0;
$nodeHTML = '';
/**
* Loop through subnodes
*/
if (isset($this->menu->items)) {
for ($i = 0; $i < count($this->menu->items); $i++) {
$nodeHTML .= $this->_nodeToHTML($this->menu->items[$i]);
}
}
if ($this->promoText) {
return sprintf('<option value="">%s</option>%s', text($this->promoText ?? ''), $nodeHTML);
} else {
return $nodeHTML;
}
}
/**
* Returns HTML for a single node
*
* @access private
*/
function _nodeToHTML($node, $prefix = '')
{
$html = sprintf('<option value="%s">%s%s</option>', attr($node->id), $prefix, text($node->text));
/**
* Loop through subnodes
*/
if (isset($node->items)) {
for ($i = 0; $i < count($node->items); $i++) {
$html .= $this->_nodeToHTML($node->items[$i], $prefix . str_repeat($this->indentChar, $this->indentNum));
}
}
return $html;
}
} // End class HTML_TreeMenu_Listbox