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<?php
/**
* @package ZOO Tag
* @author YOOtheme http://www.yootheme.com
* @copyright Copyright (C) YOOtheme GmbH
* @license http://www.gnu.org/licenses/gpl-2.0.html GNU/GPLv2 only
*/
/*
Class: TagModuleHelper
The tag module helper class
*/
class TagModuleHelper extends AppHelper {
const MIN_FONT_WEIGHT = 1;
const MAX_FONT_WEIGHT = 10;
public function buildTagCloud($application, $params) {
// Get additional filters
$mode = $params->get('mode', 'all');
$category = false;
$type = false;
if ($mode == 'categories') {
$category = $params->get('category', false);
if ($params->get('subcategories')) {
$categories = $application->getCategoryTree(true);
if (isset($categories[$category])) {
$category = array_merge(array($category), array_keys($categories[$category]->getChildren(true)));
}
}
$type = false;
} elseif ($mode == 'types') {
$category = false;
$type = $params->get('type', false);
}
// get tags
$tags = $this->app->table->tag->getAll($application->id, null, null, 'items DESC', null, $params->get('count', 10), true, $category, $type);
if (count($tags)) {
// init vars
$min_count = $tags[count($tags)-1]->items;
$max_count = $tags[0]->items;
$font_span = ($max_count - $min_count) / 100;
$font_class_span = (self::MAX_FONT_WEIGHT - self::MIN_FONT_WEIGHT) / 100;
$menu_item = $params->get('menu_item', 0);
$itemid = $menu_item ? '&Itemid='.$menu_item : '';
// attach font size, href
foreach ($tags as $tag) {
$tag->weight = $font_span ? round(self::MIN_FONT_WEIGHT + (($tag->items - $min_count) / $font_span) * $font_class_span) : 1;
$tag->href = $this->app->route->tag($application->id, $tag->name, (int) $menu_item);
}
$this->orderTags($tags, $params->get('order'));
}
return $tags;
}
public function orderTags(&$tags, $order) {
switch ($order) {
case 'alpha':
usort($tags, create_function('$a, $b', 'return strcmp($a->name, $b->name);'));
break;
case 'ralpha':
usort($tags, create_function('$a, $b', 'return strcmp($b->name, $a->name);'));
break;
case 'acount':
krsort($tags);
$tags = array_merge($tags);
break;
case 'ocount':
$this->_count_sort($tags);
break;
case 'icount':
krsort($tags);
$this->_count_sort($tags);
break;
case 'random':
shuffle($tags);
break;
}
}
protected function _count_sort(&$tags) {
$tags = array_merge($tags);
$sorted_tags = array();
$count = count($tags);
$prefix = 1;
$add = $count & 1 ? 1 : 0;
for ($i = 0; $i < $count; $i++) {
$sorted_tags[(int) (($count + $add + ($prefix * $i)) / 2)] = $tags[$i];
$prefix *= -1;
}
ksort($sorted_tags);
$tags = $sorted_tags;
}
}