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Aligator.module.php
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Aligator.module.php
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<?php
/**
* Aligator
*
* ProcessWire Module to render nested tree using callbacks for each item
*
*
*/
class Aligator extends WireData implements Module{
protected $defaultOptions;
protected $defaultConfig;
public static function getModuleInfo() {
return array(
'title' => 'Aligator',
'version' => 1,
'summary' => 'Module to render nested markup from a specific root parent or an PageArray of roots.',
'href' => 'http://processwire.com',
'singular' => true,
'autoload' => false,
'icon' => 'compass',
);
}
public function init(){
// set the default options
$this->defaultOptions = array(
"selector" => "",
"callback" => function($item, $level){
return array(
"item" => "<a href='$item->url'>" . $item->title . "</a>",
"listOpen" => "<li>",
"listClose" => "</li>",
"wrapperOpen" => "<ul>",
"wrapperClose" => "</ul>"
);
}
);
}
/**
* Recursively render the tree
* @param Page $root ProcessWire Page or PageArray
* @param array $options Options array containing configuration and callback for each item/level
* @param int $limit Maximum level to render the tree
* @param boolean $collapse Whether to render only the active page branch or all open
* @return string The generated markup
*/
public function render($root, $options = array(), $limit = null, $collapse = false) {
static $level = 0;
$level++;
$out = "";
if($limit && $level > $limit) return;
$return = array();
$selector = "";
$children = null;
if(count($options) && isset($options[$level-1])) {
$selector = isset($options[$level-1]['selector']) ? $options[$level-1]['selector'] : "";
if($root instanceof PageArray){
$children = $root;
} else {
$children = $root->children($selector);
}
if(!count($children)) return;
$firstChild = $children->first();
if(!$firstChild->id) return;
$return = isset($options[$level-1]['callback']) ? call_user_func_array($options[$level-1]['callback'], array($firstChild, $level)) : array();
$returnDefault = call_user_func_array($this->defaultOptions['callback'], array($firstChild, $level));
$return = array_merge($returnDefault, $return);
} else {
if($root instanceof PageArray){
$children = $root;
} else {
$children = $root->children($selector);
}
if(!count($children)) return;
$firstChild = $children->first();
if(!$firstChild->id) return;
$return = call_user_func_array($this->defaultOptions['callback'], array($firstChild, $level));
}
if($return["wrapperOpen"]) {
$out .= $return["wrapperOpen"];
} else if($level == 1) {
$out .= "<ul>";
} else if($root->numChildren($selector)) {
$out .= "<ul>";
}
foreach($children as $key => $page) {
$s = "";
$is_parent = wire("page")->parents->has($page);
$is_current = $page === wire("page");
if(!$collapse){
if($page->numChildren($selector)) {
$s = $this->render($page, $options, $limit, $collapse);
$level--;
}
} else {
if($page->numChildren($selector) && $is_parent) {
$s = $this->render($page, $options, $limit, $collapse);
$level--;
} else if($is_current){
$s = $this->render($page, $options, $limit, $collapse);
$level--;
}
}
if(count($options) && isset($options[$level-1])) {
$selector = isset($options[$level-1]['selector']) ? $options[$level-1]['selector'] : "";
$return = isset($options[$level-1]['callback']) ? call_user_func_array($options[$level-1]['callback'], array($page, $level)) : array();
$returnDefault = call_user_func_array($this->defaultOptions['callback'], array($page, $level));
$return = array_merge($returnDefault, $return);
} else {
$return = call_user_func_array($this->defaultOptions['callback'], array($page, $level));
}
$out .= $return["listOpen"] . $return["item"] . $s . $return["listClose"];
}
if($return["wrapperOpen"]) {
$out .= $return["wrapperClose"];
} else if($level == 1) {
$out .= "</ul>";
} else if($root->numChildren($selector)) {
$out .= "</ul>";
}
return $out;
}
public function setDefaultOptions($options = array()){
$this->defaultOptions = array_merge($this->defaultOptions, $options);
}
}