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<?php
/**
* ResponsiveHelper.php
*
* This class collects helper methods for Stud.IP's responsive design.
*
* @author Jan-Hendrik Willms <tleilax+studip@gmail.com>
* @license GPL2 or any later version
* @copyright Stud.IP core group
* @since Stud.IP 3.2
*/
class ResponsiveHelper
{
/**
* Returns the current navigation as an array.
*
* @return Array containing the navigation
*/
public static function getNavigationArray()
{
$navigation = [];
$activated = [];
$link_params = array_fill_keys(array_keys(URLHelper::getLinkParams()), null);
foreach (Navigation::getItem('/')->getSubNavigation() as $path => $nav) {
if (!$nav->isVisible(true)) {
continue;
}
$image = $nav->getImage();
$image_src = $image ? $image->copyWithRole('info_alt')->asImagePath() : false;
$item = [
'icon' => $image_src ? self::getAssetsURL($image_src) : false,
'title' => (string) $nav->getTitle(),
'url' => self::getURL($nav->getURL(), $link_params),
];
if ($nav->isActive()) {
$activated[] = $path;
}
if ($nav->getSubnavigation() && $path != 'start') {
$item['children'] = self::getChildren($nav, $path, $activated);
}
$navigation[$path] = $item;
}
return [$navigation, $activated];
}
/**
* Recursively build a navigation array from the subnavigation/children
* of a navigation object.
*
* @param Navigation $navigation The navigation object
* @param String $path Current path segment
* @param array $activated Activated items
* @return Array containing the children (+ grandchildren...)
*/
protected static function getChildren(Navigation $navigation, $path, &$activated = [])
{
$children = [];
foreach ($navigation->getSubNavigation() as $subpath => $subnav) {
if (!$subnav->isVisible()) {
continue;
}
$subpath = "{$path}/{$subpath}";
$item = [
'title' => (string) $subnav->getTitle(),
'url' => self::getURL($subnav->getURL()),
];
if ($subnav->isActive()) {
$activated[] = $subpath;
}
if ($subnav->getSubNavigation()) {
$item['children'] = self::getChildren($subnav, $subpath);
}
$children[$subpath] = $item;
}
return $children;
}
/**
* Try to get a compressed version of the passed navigation url.
* The URL is processed is processed by URLHelper and the absolute uri
* of the Stud.IP installation is stripped from it afterwards.
*
* @param String $url The url to compress
* @return String containing the compressed url
*/
protected static function getURL($url, $params = [])
{
return str_replace($GLOBALS['ABSOLUTE_URI_STUDIP'], '', URLHelper::getURL($url, $params));
}
/**
* Try to get a compressed version of the passed assets url.
* The absolute uri of the Stud.IP installation is stripped from the url.
*
* @param String $url The assets url to compress
* @return String containing the compressed assets url
*/
protected static function getAssetsURL($url)
{
return str_replace($GLOBALS['ASSETS_URL'], '', $url);
}
}
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