/**
* 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 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 treenode($data, $events));
$curNode[$aNode['level'] + 1] =& $thisNode;
}
break;
/**
* Richard Heyes' (me!) second (array based) Tree class
*/
/**
* Richard Heyes' (me!) second (array based) Tree class
*/
case 'heyes_array':
// Need to create a HTML_TreeMenu object ?
if (!isset($params['treeMenu'])) {
$treeMenu =& new 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 =& $treeMenu->addItem(new treenode(array_merge($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'] =& $parentNode;
treemenu::createFromStructure($recurseParams);
}
}
break;
/**
* Richard Heyes' (me!) original OO based Tree class
*/
/**
* Richard Heyes' (me!) original OO based Tree class
*/
case 'heyes':
default:
// Need to create a HTML_TreeMenu object ?
if (!isset($params['treeMenu'])) {
$treeMenu =& new treemenu();
} else {
$treeMenu =& $params['treeMenu'];
}
// Loop thru the trees nodes
foreach ($params['structure']->nodes->nodes as $node) {
$tag = $node->getTag();
$parentNode =& $treeMenu->addItem(new treenode(array_merge($params['nodeOptions'], $tag)));
// Recurse ?
if (!empty($node->nodes->nodes)) {
$recurseParams['structure'] = $node;
$recurseParams['nodeOptions'] = $params['nodeOptions'];
$recurseParams['treeMenu'] =& $parentNode;
treemenu::createFromStructure($recurseParams);
}
}
break;
}
return $treeMenu;
}
