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File: TreeMenu.php
<?php // +-----------------------------------------------------------------------+ // | Copyright (c) 2002-2005, 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 <http://www.phpguru.org/> | // | Harald Radi <harald.radi@nme.at> | // +-----------------------------------------------------------------------+ // // $Id: TreeMenu.php,v 1.21 2005/03/02 02:24:26 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 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 HTML_TreeMenu() { // 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; /** * Javascript event handlers; * @var array */ var $events; /** * 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 $events An array of javascript events and the corresponding event handlers. * Additionally to the standard javascript events you can specify handlers * for the 'onexpand', 'oncollapse' and 'ontoggle' events which will be fired * whenever a node is collapsed and/or expanded. */ function HTML_TreeNode($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->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 $structure The menu structure */ function HTML_TreeMenu_Presentation(&$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 $usePersistence; /** * The default CSS class for the nodes */ var $defaultClass; /** * Whether to skip first level branch images * @var bool */ var $noTopLevelImages; /** * Name of Jabbascript object to use * @var string */ var $jsObjectName; /** * 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. * o jsObjectName - Name to use for jabbascript object. Set this if you have * different menus that should maintain their persistence * information separately. * * 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 $isDynamic Whether the tree is dynamic or not */ function HTML_TreeMenu_DHTML(&$structure, $options = array(), $isDynamic = true) { $this->HTML_TreeMenu_Presentation($structure); $this->isDynamic = $isDynamic; // Defaults $this->images = 'images'; $this->maxDepth = 0; // No limit $this->linkTarget = '_self'; $this->jsObjectName = 'objTreeMenu'; $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 = $this->jsObjectName . '_' . ++$count; $html = "\n"; $html .= '<script language="javascript" type="text/javascript">' . "\n//<![CDATA[\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// ]]>\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('%s', %s, %s, %s, %s, '%s', '%s', %s));\n", $return, $prefix, str_replace("'", "\\'", $nodeObj->text), !empty($nodeObj->icon) ? "'" . $nodeObj->icon . "'" : 'null', !empty($nodeObj->link) ? "'" . $nodeObj->link . "'" : 'null', $expanded, $isDynamic, $nodeObj->cssClass, $nodeObj->linkTarget, !empty($nodeObj->expandedIcon) ? "'" . $nodeObj->expandedIcon . "'" : 'null'); foreach ($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; /** * The submit button name * @var string */ var $submitText; /** * Name of <select> parameter * @var string */ var $selectedName; /** * Form action * @var string */ var $action; /** * Form method * @var string */ var $method; /** * Additional HTML * @var string */ var $addHTML_before; var $addHTML_after; var $addHTML_middle; /** * Constructor * * @param object $structure The menu structure * @param array $options Options whic affect the display of the listbox. * These can consist of: * o promoText The text that appears at the the top of the listbox * Defaults to "Select..." * o indentChar The character to use for indenting the nodes * Defaults to " " * o indentNum How many of the indentChars to use per indentation level * Defaults to 2 * o linkTarget Target for the links. Defaults to "_self" * o submitText Text for the submit button. Defaults to "Go" * o selectedName Name which GETs * o action Form action * o method Form method: POST, GET(default) * o addHTML_before Additional HTML form elements inserted before <select> element * o addHTML_after Additional HTML form elements inserted after submit button * o addHTML_middle Additional HTML form elements inserted after <select> element and before submit */ function HTML_TreeMenu_Listbox($structure, $options = array()) { $this->HTML_TreeMenu_Presentation($structure); $this->promoText = 'Select...'; $this->indentChar = ' '; $this->indentNum = 2; $this->linkTarget = '_self'; $this->submitText = 'Go'; $this->selectedName = 'HTML_TreeMenu_Listbox_'; $this->action = ''; $this->method = 'GET'; $this->addHTML_before = ''; $this->addHTML_after = ''; $this->addHTML_middle = ''; foreach ($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]); } } return sprintf('<form method="%s" target="%s" action="%s" onsubmit="var link = this.%s.options[this.%s.selectedIndex].value; if (link) {return true} else return false"> %s <select name="%s"><option value="">%s</option>%s</select> %s <input type="submit" value="%s" /> %s </form>', $this->method, $this->linkTarget, $this->action, $this->selectedName . ++$count, $this->selectedName . $count, $this->addHTML_before, $this->selectedName . $count, $this->promoText, $nodeHTML, $this->addHTML_middle, $this->submitText, $this->addHTML_after); } /** * Returns HTML for a single node * * @access private */ function _nodeToHTML($node, $prefix = '') { $html = sprintf('<option value="%s">%s%s</option>', $node->link, $prefix, $node->text); /** * Loop through subnodes */ if (isset($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 ?>
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