64aa6011b6ad7f31c2f24e781291db0c5fc37be6
1 <?php
2 // +-----------------------------------------------------------------------+
3 // | Copyright (c) 2002-2005, Richard Heyes, Harald Radi |
4 // | All rights reserved. |
5 // | |
6 // | Redistribution and use in source and binary forms, with or without |
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30 // | |
31 // +-----------------------------------------------------------------------+
32 // | Author: Richard Heyes <http://www.phpguru.org/> |
33 // | Harald Radi <harald.radi@nme.at> |
34 // +-----------------------------------------------------------------------+
35 //
36 // $Id$
38 /**
39 * HTML_TreeMenu Class
40 *
41 * A simple couple of PHP classes and some not so simple
42 * Jabbascript which produces a tree menu. In IE this menu
43 * is dynamic, with branches being collapsable. In IE5+ the
44 * status of the collapsed/open branches persists across page
45 * refreshes.In any other browser the tree is static. Code is
46 * based on work of Harald Radi.
47 *
48 * Usage.
49 *
50 * After installing the package, copy the example php script to
51 * your servers document root. Also place the TreeMenu.js and the
52 * images folder in the same place. Running the script should
53 * then produce the tree.
54 *
55 * Thanks go to Chip Chapin (http://www.chipchapin.com) for many
56 * excellent ideas and improvements.
57 *
58 * @author Richard Heyes <richard@php.net>
59 * @author Harald Radi <harald.radi@nme.at>
60 * @access public
61 * @package HTML_TreeMenu
62 */
64 class HTML_TreeMenu
65 {
66 /**
67 * Indexed array of subnodes
68 * @var array
69 */
70 var $items;
72 /**
73 * Constructor
74 *
75 * @access public
76 */
77 function HTML_TreeMenu()
78 {
79 // Not much to do here :(
80 }
82 /**
83 * This function adds an item to the the tree.
84 *
85 * @access public
86 * @param object $node The node to add. This object should be
87 * a HTML_TreeNode object.
88 * @return object Returns a reference to the new node inside
89 * the tree.
90 */
91 function &addItem(&$node)
92 {
93 $this->items[] = &$node;
94 return $this->items[count($this->items) - 1];
95 }
97 /**
98 * Import method for creating HTML_TreeMenu objects/structures
99 * out of existing tree objects/structures. Currently supported
100 * are Wolfram Kriesings' PEAR Tree class, and Richard Heyes' (me!)
101 * Tree class (available here: http://www.phpguru.org/). This
102 * method is intended to be used statically, eg:
103 * $treeMenu = &HTML_TreeMenu::createFromStructure($myTreeStructureObj);
104 *
105 * @param array $params An array of parameters that determine
106 * how the import happens. This can consist of:
107 * structure => The tree structure
108 * type => The type of the structure, currently
109 * can be either 'heyes' or 'kriesing'
110 * nodeOptions => Default options for each node
111 *
112 * @return object The resulting HTML_TreeMenu object
113 */
114 function createFromStructure($params)
115 {
116 if (!isset($params['nodeOptions'])) {
117 $params['nodeOptions'] = array();
118 }
120 switch (@$params['type']) {
122 /**
123 * Wolfram Kriesings' PEAR Tree class
124 */
125 case 'kriesing':
126 $className = strtolower(get_class($params['structure']->dataSourceClass));
127 $isXMLStruct = strpos($className,'_xml') !== false ? true : false;
129 // Get the entire tree, the $nodes are sorted like in the tree view
130 // from top to bottom, so we can easily put them in the nodes
131 $nodes = $params['structure']->getNode();
133 // Make a new menu and fill it with the values from the tree
134 $treeMenu = new HTML_TreeMenu();
135 $curNode[0] = &$treeMenu; // we need the current node as the reference to the
137 foreach ( $nodes as $aNode ) {
138 $events = array();
139 $data = array();
141 // In an XML, all the attributes are saved in an array, but since they might be
142 // used as the parameters, we simply extract them here if we handle an XML-structure
143 if ( $isXMLStruct && sizeof($aNode['attributes']) ){
144 foreach ( $aNode['attributes'] as $key=>$val ) {
145 if ( !$aNode[$key] ) { // dont overwrite existing values
146 $aNode[$key] = $val;
147 }
148 }
149 }
151 // Process all the data that are saved in $aNode and put them in the data and/or events array
152 foreach ( $aNode as $key=>$val ) {
153 if ( !is_array($val) ) {
154 // Dont get the recursive data in here! they are always arrays
155 if ( substr($key,0,2) == 'on' ){ // get the events
156 $events[$key] = $val;
157 }
159 // 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
160 $data[$key] = $val;
161 }
162 }
164 // Normally the text is in 'name' in the Tree class, so we check both but 'text' is used if found
165 $data['text'] = $aNode['text'] ? $aNode['text'] : $aNode['name'];
167 // Add the item to the proper node
168 $thisNode = &$curNode[$aNode['level']]->addItem( new HTML_TreeNode( $data , $events ) );
169 $curNode[$aNode['level']+1] = &$thisNode;
170 }
171 break;
173 /**
174 * Richard Heyes' (me!) second (array based) Tree class
175 */
176 case 'heyes_array':
177 // Need to create a HTML_TreeMenu object ?
178 if (!isset($params['treeMenu'])) {
179 $treeMenu = new HTML_TreeMenu();
180 $parentID = 0;
181 } else {
182 $treeMenu = &$params['treeMenu'];
183 $parentID = $params['parentID'];
184 }
186 // Loop thru the trees nodes
187 foreach ($params['structure']->getChildren($parentID) as $nodeID) {
188 $data = $params['structure']->getData($nodeID);
189 $parentNode = &$treeMenu->addItem(new HTML_TreeNode(array_merge($params['nodeOptions'], $data)));
191 // Recurse ?
192 if ($params['structure']->hasChildren($nodeID)) {
193 $recurseParams['type'] = 'heyes_array';
194 $recurseParams['parentID'] = $nodeID;
195 $recurseParams['nodeOptions'] = $params['nodeOptions'];
196 $recurseParams['structure'] = &$params['structure'];
197 $recurseParams['treeMenu'] = &$parentNode;
198 HTML_TreeMenu::createFromStructure($recurseParams);
199 }
200 }
202 break;
204 /**
205 * Richard Heyes' (me!) original OO based Tree class
206 */
207 case 'heyes':
208 default:
209 // Need to create a HTML_TreeMenu object ?
210 if (!isset($params['treeMenu'])) {
211 $treeMenu = new HTML_TreeMenu();
212 } else {
213 $treeMenu = &$params['treeMenu'];
214 }
216 // Loop thru the trees nodes
217 foreach ($params['structure']->nodes->nodes as $node) {
218 $tag = $node->getTag();
219 $parentNode = &$treeMenu->addItem(new HTML_TreeNode(array_merge($params['nodeOptions'], $tag)));
221 // Recurse ?
222 if (!empty($node->nodes->nodes)) {
223 $recurseParams['structure'] = $node;
224 $recurseParams['nodeOptions'] = $params['nodeOptions'];
225 $recurseParams['treeMenu'] = &$parentNode;
226 HTML_TreeMenu::createFromStructure($recurseParams);
227 }
228 }
229 break;
231 }
233 return $treeMenu;
234 }
236 /**
237 * Creates a treeMenu from XML. The structure of your XML should be
238 * like so:
239 *
240 * <treemenu>
241 * <node text="First node" icon="folder.gif" expandedIcon="folder-expanded.gif" />
242 * <node text="Second node" icon="folder.gif" expandedIcon="folder-expanded.gif">
243 * <node text="Sub node" icon="folder.gif" expandedIcon="folder-expanded.gif" />
244 * </node>
245 * <node text="Third node" icon="folder.gif" expandedIcon="folder-expanded.gif">
246 * </treemenu>
247 *
248 * Any of the options you can supply to the HTML_TreeNode constructor can be supplied as
249 * attributes to the <node> tag. If there are no subnodes for a particular node, you can
250 * use the XML shortcut <node ... /> instead of <node ... ></node>. The $xml argument can
251 * be either the XML as a string, or an pre-created XML_Tree object. Also, this method
252 * REQUIRES my own Tree class to work (http://phpguru.org/tree.html). If this has not
253 * been include()ed or require()ed this method will die().
254 *
255 * @param mixed $xml This can be either a string containing the XML, or an XML_Tree object
256 * (the PEAR::XML_Tree package).
257 * @return object The HTML_TreeMenu object
258 */
259 function createFromXML($xml)
260 {
261 if (!class_exists('Tree')) {
262 die('Could not find Tree class');
263 }
265 // Supplied $xml is a string
266 if (is_string($xml)) {
267 require_once('XML/Tree.php');
268 $xmlTree = new XML_Tree();
269 $xmlTree->getTreeFromString($xml);
271 // Supplied $xml is an XML_Tree object
272 } else {
273 $xmlTree = $xml;
274 }
276 // Now process the XML_Tree object, setting the XML attributes
277 // to be the tag data (with out the XML tag name or contents).
278 $treeStructure = Tree::createFromXMLTree($xmlTree, true);
279 $treeStructure->nodes->traverse(create_function('&$node', '$tagData = $node->getTag(); $node->setTag($tagData["attributes"]);'));
282 return HTML_TreeMenu::createFromStructure(array('structure' => $treeStructure));
283 }
284 } // HTML_TreeMenu
287 /**
288 * HTML_TreeNode class
289 *
290 * This class is supplementary to the above and provides a way to
291 * add nodes to the tree. A node can have other nodes added to it.
292 *
293 * @author Richard Heyes <richard@php.net>
294 * @author Harald Radi <harald.radi@nme.at>
295 * @access public
296 * @package HTML_TreeMenu
297 */
298 class HTML_TreeNode
299 {
300 /**
301 * The text for this node.
302 * @var string
303 */
304 var $text;
306 /**
307 * The link for this node.
308 * @var string
309 */
310 var $link;
312 /**
313 * The icon for this node.
314 * @var string
315 */
316 var $icon;
318 /**
319 * The icon to show when expanded for this node.
320 * @var string
321 */
322 var $expandedIcon;
324 /**
325 * The css class for this node
326 * @var string
327 */
328 var $cssClass;
330 /**
331 * The link target for this node
332 * @var string
333 */
334 var $linkTarget;
336 /**
337 * Indexed array of subnodes
338 * @var array
339 */
340 var $items;
342 /**
343 * Whether this node is expanded or not
344 * @var bool
345 */
346 var $expanded;
348 /**
349 * Whether this node is dynamic or not
350 * @var bool
351 */
352 var $isDynamic;
354 /**
355 * Should this node be made visible?
356 * @var bool
357 */
358 var $ensureVisible;
360 /**
361 * The parent node. Null if top level
362 * @var object
363 */
364 var $parent;
366 /**
367 * Javascript event handlers;
368 * @var array
369 */
370 var $events;
372 /**
373 * Constructor
374 *
375 * @access public
376 * @param array $options An array of options which you can pass to change
377 * the way this node looks/acts. This can consist of:
378 * o text The title of the node, defaults to blank
379 * o link The link for the node, defaults to blank
380 * o icon The icon for the node, defaults to blank
381 * o expandedIcon The icon to show when the node is expanded
382 * o cssClass The CSS class for this node, defaults to blank
383 * o expanded The default expanded status of this node, defaults to false
384 * This doesn't affect non dynamic presentation types
385 * o linkTarget Target for the links. Defaults to linkTarget of the
386 * HTML_TreeMenu_Presentation.
387 * o isDynamic If this node is dynamic or not. Only affects
388 * certain presentation types.
389 * o ensureVisible If true this node will be made visible despite the expanded
390 * settings, and client side persistence. Will not affect
391 * some presentation styles, such as Listbox. Default is false
392 * @param array $events An array of javascript events and the corresponding event handlers.
393 * Additionally to the standard javascript events you can specify handlers
394 * for the 'onexpand', 'oncollapse' and 'ontoggle' events which will be fired
395 * whenever a node is collapsed and/or expanded.
396 */
397 function HTML_TreeNode($options = array(), $events = array())
398 {
399 $this->text = '';
400 $this->link = '';
401 $this->icon = '';
402 $this->expandedIcon = '';
403 $this->cssClass = '';
404 $this->expanded = false;
405 $this->isDynamic = true;
406 $this->ensureVisible = false;
407 $this->linkTarget = null;
409 $this->parent = null;
410 $this->events = $events;
412 foreach ($options as $option => $value) {
413 $this->$option = $value;
414 }
415 }
417 /**
418 * Allows setting of various parameters after the initial
419 * constructor call. Possible options you can set are:
420 * o text
421 * o link
422 * o icon
423 * o cssClass
424 * o expanded
425 * o isDynamic
426 * o ensureVisible
427 * ie The same options as in the constructor
428 *
429 * @access public
430 * @param string $option Option to set
431 * @param string $value Value to set the option to
432 */
433 function setOption($option, $value)
434 {
435 $this->$option = $value;
436 }
438 /**
439 * Adds a new subnode to this node.
440 *
441 * @access public
442 * @param object $node The new node
443 */
444 function &addItem(&$node)
445 {
446 $node->parent = &$this;
447 $this->items[] = &$node;
449 /**
450 * If the subnode has ensureVisible set it needs
451 * to be handled, and all parents set accordingly.
452 */
453 if ($node->ensureVisible) {
454 $this->_ensureVisible();
455 }
457 return $this->items[count($this->items) - 1];
458 }
460 /**
461 * Private function to handle ensureVisible stuff
462 *
463 * @access private
464 */
465 function _ensureVisible()
466 {
467 $this->ensureVisible = true;
468 $this->expanded = true;
470 if (!is_null($this->parent)) {
471 $this->parent->_ensureVisible();
472 }
473 }
474 } // HTML_TreeNode
477 /**
478 * HTML_TreeMenu_Presentation class
479 *
480 * Base class for other presentation classes to
481 * inherit from.
482 */
483 class HTML_TreeMenu_Presentation
484 {
485 /**
486 * The TreeMenu structure
487 * @var object
488 */
489 var $menu;
491 /**
492 * Base constructor simply sets the menu object
493 *
494 * @param object $structure The menu structure
495 */
496 function HTML_TreeMenu_Presentation(&$structure)
497 {
498 $this->menu = &$structure;
499 }
501 /**
502 * Prints the HTML generated by the toHTML() method.
503 * toHTML() must therefore be defined by the derived
504 * class.
505 *
506 * @access public
507 * @param array Options to set. Any options taken by
508 * the presentation class can be specified
509 * here.
510 */
511 function printMenu($options = array())
512 {
513 foreach ($options as $option => $value) {
514 $this->$option = $value;
515 }
517 echo $this->toHTML();
518 }
519 }
522 /**
523 * HTML_TreeMenu_DHTML class
524 *
525 * This class is a presentation class for the tree structure
526 * created using the TreeMenu/TreeNode. It presents the
527 * traditional tree, static for browsers that can't handle
528 * the DHTML.
529 */
530 class HTML_TreeMenu_DHTML extends HTML_TreeMenu_Presentation
531 {
532 /**
533 * Dynamic status of the treemenu. If true (default) this has no effect. If
534 * false it will override all dynamic status vars and set the menu to be
535 * fully expanded an non-dynamic.
536 */
537 var $isDynamic;
539 /**
540 * Path to the images
541 * @var string
542 */
543 var $images;
545 /**
546 * Target for the links generated
547 * @var string
548 */
549 var $linkTarget;
551 /**
552 * Whether to use clientside persistence or not
553 * @var bool
554 */
555 var $usePersistence;
557 /**
558 * The default CSS class for the nodes
559 */
560 var $defaultClass;
562 /**
563 * Whether to skip first level branch images
564 * @var bool
565 */
566 var $noTopLevelImages;
568 /**
569 * Name of Jabbascript object to use
570 * @var string
571 */
572 var $jsObjectName;
574 /**
575 * Constructor, takes the tree structure as
576 * an argument and an array of options which
577 * can consist of:
578 * o images - The path to the images folder. Defaults to "images"
579 * o linkTarget - The target for the link. Defaults to "_self"
580 * o defaultClass - The default CSS class to apply to a node. Default is none.
581 * o usePersistence - Whether to use clientside persistence. This persistence
582 * is achieved using cookies. Default is true.
583 * o noTopLevelImages - Whether to skip displaying the first level of images if
584 * there is multiple top level branches.
585 * o maxDepth - The maximum depth of indentation. Useful for ensuring
586 * deeply nested trees don't go way off to the right of your
587 * page etc. Defaults to no limit.
588 * o jsObjectName - Name to use for jabbascript object. Set this if you have
589 * different menus that should maintain their persistence
590 * information separately.
591 *
592 * And also a boolean for whether the entire tree is dynamic or not.
593 * This overrides any perNode dynamic settings.
594 *
595 * @param object $structure The menu structure
596 * @param array $options Array of options
597 * @param bool $isDynamic Whether the tree is dynamic or not
598 */
599 function HTML_TreeMenu_DHTML(&$structure, $options = array(), $isDynamic = true)
600 {
601 $this->HTML_TreeMenu_Presentation($structure);
602 $this->isDynamic = $isDynamic;
604 // Defaults
605 $this->images = 'images';
606 $this->maxDepth = 0; // No limit
607 $this->linkTarget = '_self';
608 $this->jsObjectName = 'objTreeMenu';
609 $this->defaultClass = '';
610 $this->usePersistence = true;
611 $this->noTopLevelImages = false;
613 foreach ($options as $option => $value) {
614 $this->$option = $value;
615 }
616 }
618 /**
619 * Returns the HTML for the menu. This method can be
620 * used instead of printMenu() to use the menu system
621 * with a template system.
622 *
623 * @access public
624 * @return string The HTML for the menu
625 */
626 function toHTML()
627 {
628 static $count = 0;
629 $menuObj = $this->jsObjectName . '_' . ++$count;
631 $html = "\n";
632 $html .= '<script language="javascript" type="text/javascript">' . "\n//<![CDATA[\n\t";
633 $html .= sprintf('%s = new TreeMenu("%s", "%s", "%s", "%s", %s, %s);',
634 $menuObj,
635 $this->images,
636 $menuObj,
637 $this->linkTarget,
638 $this->defaultClass,
639 $this->usePersistence ? 'true' : 'false',
640 $this->noTopLevelImages ? 'true' : 'false');
642 $html .= "\n";
644 /**
645 * Loop through subnodes
646 */
647 if (isset($this->menu->items)) {
648 for ($i=0; $i<count($this->menu->items); $i++) {
649 $html .= $this->_nodeToHTML($this->menu->items[$i], $menuObj);
650 }
651 }
653 $html .= sprintf("\n\t%s.drawMenu();", $menuObj);
654 $html .= sprintf("\n\t%s.writeOutput();", $menuObj);
656 if ($this->usePersistence && $this->isDynamic) {
657 $html .= sprintf("\n\t%s.resetBranches();", $menuObj);
658 }
659 $html .= "\n// ]]>\n</script>";
661 return $html;
662 }
664 /**
665 * Prints a node of the menu
666 *
667 * @access private
668 */
669 function _nodeToHTML($nodeObj, $prefix, $return = 'newNode', $currentDepth = 0, $maxDepthPrefix = null)
670 {
671 $prefix = empty($maxDepthPrefix) ? $prefix : $maxDepthPrefix;
673 $expanded = $this->isDynamic ? ($nodeObj->expanded ? 'true' : 'false') : 'true';
674 $isDynamic = $this->isDynamic ? ($nodeObj->isDynamic ? 'true' : 'false') : 'false';
675 $html = sprintf("\t %s = %s.addItem(new TreeNode('%s', %s, %s, %s, %s, '%s', '%s', %s));\n",
676 $return,
677 $prefix,
678 str_replace("'", "\\'", $nodeObj->text),
679 !empty($nodeObj->icon) ? "'" . $nodeObj->icon . "'" : 'null',
680 !empty($nodeObj->link) ? "'" . $nodeObj->link . "'" : 'null',
681 $expanded,
682 $isDynamic,
683 $nodeObj->cssClass,
684 $nodeObj->linkTarget,
685 !empty($nodeObj->expandedIcon) ? "'" . $nodeObj->expandedIcon . "'" : 'null');
687 foreach ($nodeObj->events as $event => $handler) {
688 $html .= sprintf("\t %s.setEvent('%s', '%s');\n",
689 $return,
690 $event,
691 str_replace(array("\r", "\n", "'"), array('\r', '\n', "\'"), $handler));
692 }
694 if ($this->maxDepth > 0 AND $currentDepth == $this->maxDepth) {
695 $maxDepthPrefix = $prefix;
696 }
698 /**
699 * Loop through subnodes
700 */
701 if (!empty($nodeObj->items)) {
702 for ($i=0; $i<count($nodeObj->items); $i++) {
703 $html .= $this->_nodeToHTML($nodeObj->items[$i], $return, $return . '_' . ($i + 1), $currentDepth + 1, $maxDepthPrefix);
704 }
705 }
707 return $html;
708 }
709 } // End class HTML_TreeMenu_DHTML
712 /**
713 * HTML_TreeMenu_Listbox class
714 *
715 * This class presents the menu as a listbox
716 */
717 class HTML_TreeMenu_Listbox extends HTML_TreeMenu_Presentation
718 {
719 /**
720 * The text that is displayed in the first option
721 * @var string
722 */
723 var $promoText;
725 /**
726 * The character used for indentation
727 * @var string
728 */
729 var $indentChar;
731 /**
732 * How many of the indent chars to use
733 * per indentation level
734 * @var integer
735 */
736 var $indentNum;
738 /**
739 * Target for the links generated
740 * @var string
741 */
742 var $linkTarget;
744 /**
745 * Constructor
746 *
747 * @param object $structure The menu structure
748 * @param array $options Options whic affect the display of the listbox.
749 * These can consist of:
750 * o promoText The text that appears at the the top of the listbox
751 * Defaults to "Select..."
752 * o indentChar The character to use for indenting the nodes
753 * Defaults to " "
754 * o indentNum How many of the indentChars to use per indentation level
755 * Defaults to 2
756 * o linkTarget Target for the links. Defaults to "_self"
757 * o submitText Text for the submit button. Defaults to "Go"
758 */
759 function HTML_TreeMenu_Listbox($structure, $options = array())
760 {
761 $this->HTML_TreeMenu_Presentation($structure);
763 $this->promoText = 'Select...';
764 $this->indentChar = ' ';
765 $this->indentNum = 2;
766 $this->linkTarget = '_self';
767 $this->submitText = 'Go';
769 foreach ($options as $option => $value) {
770 $this->$option = $value;
771 }
772 }
774 /**
775 * Returns the HTML generated
776 */
777 function toHTML()
778 {
779 static $count = 0;
780 $nodeHTML = '';
782 /**
783 * Loop through subnodes
784 */
785 if (isset($this->menu->items)) {
786 for ($i=0; $i<count($this->menu->items); $i++) {
787 $nodeHTML .= $this->_nodeToHTML($this->menu->items[$i]);
788 }
789 }
791 return sprintf('<form target="%s" action="" onsubmit="var link = this.%s.options[this.%s.selectedIndex].value; if (link) {this.action = link; return true} else return false"><select name="%s"><option value="">%s</option>%s</select> <input type="submit" value="%s" /></form>',
792 $this->linkTarget,
793 'HTML_TreeMenu_Listbox_' . ++$count,
794 'HTML_TreeMenu_Listbox_' . $count,
795 'HTML_TreeMenu_Listbox_' . $count,
796 $this->promoText,
797 $nodeHTML,
798 $this->submitText);
799 }
801 /**
802 * Returns HTML for a single node
803 *
804 * @access private
805 */
806 function _nodeToHTML($node, $prefix = '')
807 {
808 $html = sprintf('<option value="%s">%s%s</option>', $node->link, $prefix, $node->text);
810 /**
811 * Loop through subnodes
812 */
813 if (isset($node->items)) {
814 for ($i=0; $i<count($node->items); $i++) {
815 $html .= $this->_nodeToHTML($node->items[$i], $prefix . str_repeat($this->indentChar, $this->indentNum));
816 }
817 }
819 return $html;
820 }
821 } // End class HTML_TreeMenu_Listbox
822 ?>