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<?php
/**
* Returns a list of tags managed by the admins, in json format
* suitable for jsTree consumption.
*
* @param string $tag Tag for which the children tags shall be returned
*
* SemanticScuttle - your social bookmark manager.
*
* PHP version 5.
*
* @category Bookmarking
* @package SemanticScuttle
* @subcategory Templates
* @author Benjamin Huynh-Kim-Bang <mensonge@users.sourceforge.net>
* @author Christian Weiske <cweiske@cweiske.de>
* @author Eric Dane <ericdane@users.sourceforge.net>
* @license GPL http://www.gnu.org/licenses/gpl.html
* @link http://sourceforge.net/projects/semanticscuttle
*/
$httpContentType = 'application/json';
require_once '../www-header.php';
/**
* Creates and returns an array of tags for the jsTree ajax loader.
* If the tag is empty, the configured menu2 (admin) main tags are used.
*
* @param string $tag Tag name to fetch subtags for
* @param SemanticScuttle_Service_Tag2Tag $t2t Tag relation service
*
* @return array Array of tag data suitable for the jsTree ajax loader
*/
function assembleAdminTagData($tag, SemanticScuttle_Service_Tag2Tag $t2t)
{
if ($tag == '') {
$linkedTags = $GLOBALS['menu2Tags'];
} else {
$linkedTags = $t2t->getAdminLinkedTags($tag, '>');
}
$tagData = array();
foreach ($linkedTags as $tag) {
//FIXME: the hasChildren code is nasty, because it causes too many
// queries onto the database
$hasChildren = 0 < count($t2t->getAdminLinkedTags($tag, '>'));
$tagData[] = createTagArray($tag, $hasChildren);
}
return $tagData;
}
/**
* Creates an jsTree json array for the given tag
*
* @param string $tag Tag name
* @param boolean $hasChildren If the tag has subtags (children) or not.
* If unsure, set it to "true".
*
* @return array Array to be sent back to the browser as json
*/
function createTagArray($tag, $hasChildren = true)
{
$ar = array(
'data' => array(
//<a> attributes
'title' => $tag,
'attr' => array(
'href' => createUrl('tags', $tag)
)
),
//<li> attributes
'attr' => array(
'rel' => $tag,//needed for identifying the tag in html
),
);
if ($hasChildren) {
//jstree needs that to show the arrows
$ar['state'] = 'closed';
}
return $ar;
}
$tag = isset($_GET['tag']) ? trim($_GET['tag']) : '';
$tagData = assembleAdminTagData(
$tag,
SemanticScuttle_Service_Factory::get('Tag2Tag')
);
echo json_encode($tagData);
?>
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