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<?php
/*
* Knowledgeroot
* class for ajax functions that return xml
* Frank Habermann
*/
class ajax_xml {
// global array with classes
var $CLASS = array();
// var with xmlcode to return
var $xmlcode = "";
function start(&$CLASS) {
$this->CLASS =& $CLASS;
}
// check what to do
function check_vars() {
//check if userid and groupid is set, if not set to 0
if($_SESSION['userid'] == "" || $_SESSION['groupid'] == "") {
$_SESSION['userid'] = 0;
$_SESSION['groupid'] = 0;
}
// try to work only with POST
if($_POST['ajaxopen'] != "") {
$this->tree_open($_POST['ajaxopen']);
} elseif ($_POST['ajaxclose'] != "") {
$this->tree_close($_POST['ajaxclose']);
} elseif ($_POST['reloadtree'] != "") {
$this->tree_reload();
} elseif ($_POST['expandtree'] != "") {
$this->tree_expand();
} elseif ($_POST['collapsetree'] != "") {
$this->tree_collapse();
}
}
// generate xml to open tree part
function tree_open($id) {
// get all elements to open
$elements = $this->getOpenTreeElements($id);
// generate xmloutput
$this->xmlcode = '<?xml version="1.0" ?>' . "\n";
$this->xmlcode .= "<root>\n";
$this->xmlcode .= "\t<parentid>".$id."</parentid>\n";
$this->xmlcode .= "\t<html>\n";
$this->xmlcode .= "<![CDATA[\n";
//$this->xmlcode .= htmlentities($elements);
$this->xmlcode .= $elements;
$this->xmlcode .= "]]>\n";
$this->xmlcode .= "\t</html>\n";
$this->xmlcode .= "</root>\n";
// save tree status to session and to db
$_SESSION['open'][$id] = 1;
if(!empty($_SESSION['userid'])) {
$res = $this->CLASS['db']->query("UPDATE users SET treecache='".serialize($_SESSION['open'])."' WHERE id=".$_SESSION['userid']."");
}
}
// generate xml to close treepart
function tree_close($id) {
// get all elements to close
$elements = $this->getCloseTreeElements($id);
// generate xmloutput
$this->xmlcode = '<?xml version="1.0" ?>' . "\n";
$this->xmlcode .= "<root>\n";
$this->xmlcode .= $elements;
$this->xmlcode .= "</root>\n";
// save tree status to session and to db
$_SESSION['open'][$id] = 0;
if(!empty($_SESSION['userid'])) {
$res = $this->CLASS['db']->query("UPDATE users SET treecache='".serialize($_SESSION['open'])."' WHERE id=".$_SESSION['userid']."");
}
}
// returns elements to close of an treeparentelement
function getCloseTreeElements($id) {
// check if the user have permissions
if($this->CLASS['knowledgeroot']->checkRecursivPerm($id, $_SESSION['userid']) != 0) {
if($_SESSION['admin'] == 1) {
$query = "SELECT id FROM tree WHERE belongs_to=".$id." AND deleted=0 ORDER BY title ASC";
} else {
// get groups from user
$res = $this->CLASS['db']->query("SELECT groupid FROM user_group WHERE userid=".$_SESSION['userid']."");
$orclause = "";
while($rowuser = $this->CLASS['db']->fetch_assoc($res)) {
if($this->CLASS['db']->dbtype == "pgsql") {
$orclause .= "OR (\"group\"=".$rowuser['groupid']." AND grouprights > 0) ";
} else {
$orclause .= "OR (`group`=".$rowuser['groupid']." AND grouprights > 0) ";
}
}
if($this->CLASS['db']->dbtype == "pgsql") {
$query = "SELECT id FROM tree WHERE belongs_to=".$id." AND deleted=0 AND ((otherrights > 0) OR (\"group\"=".$_SESSION['groupid']." AND grouprights > 0) ".$orclause."OR (owner=".$_SESSION['userid']." AND userrights>0)) ORDER BY title ASC";
} else {
$query = "SELECT id FROM tree WHERE belongs_to=".$id." AND deleted=0 AND ((otherrights > 0) OR (`group`=".$_SESSION['groupid']." AND grouprights > 0) ".$orclause."OR (owner=".$_SESSION['userid']." AND userrights>0)) ORDER BY title ASC";
}
}
$line = "";
// get all elements to close in tree
$res = $this->CLASS['db']->query($query);
while($row = $this->CLASS['db']->fetch_assoc($res)) {
$line .= "<element>".$row['id']."</element>\n";
// try to get childs of this element
if($_SESSION['open'][$row['id']] == 1) {
$line .= $this->getCloseTreeElements($row['id']);
}
}
}
return $line;
}
// returns elements to open in tree
function getOpenTreeElements($id) {
$this->CLASS['tree'] = new categoryTree();
// check if page is movingpage
if($_POST['move'] == "1") {
$this->CLASS['tree']->start($this->CLASS,TRUE,"#");
} else {
$this->CLASS['tree']->start($this->CLASS);
}
$lines = $this->CLASS['tree']->buildAjaxTreePart($id);
return $lines;
}
// return xmlcode
function get_xml() {
return $this->xmlcode;
}
// returns the hole tree for reloading
function tree_reload($expand = "") {
$this->CLASS['tree'] = new categoryTree();
// check if page is movingpage
if($_POST['move'] == "1") {
$this->CLASS['tree']->start($this->CLASS,TRUE,"#");
} else {
$this->CLASS['tree']->start($this->CLASS);
}
if($expand != "") {
$this->CLASS['tree']->doexpand = $expand;
$this->CLASS['tree']->expand = $expand;
}
$lines = $this->CLASS['tree']->buildAjaxTreePart("0");
// generate tree
$tree = "<table id=\"treeelementtable\" class=\"treeelements\" cellpadding=\"0\" cellspacing=\"0\" border=\"0\">\n";
$tree .= $lines;
$tree .= "</table>\n";
// generate xmloutput
$this->xmlcode = '<?xml version="1.0" ?>' . "\n";
$this->xmlcode .= "<root>\n";
$this->xmlcode .= "\t<html>\n";
$this->xmlcode .= "<![CDATA[\n";
$this->xmlcode .= $tree;
$this->xmlcode .= "]]>\n";
$this->xmlcode .= "\t</html>\n";
$this->xmlcode .= "</root>\n";
}
// expand tree
function tree_expand() {
$_SESSION['firstrun'] = "no";
if ($_SESSION['open'] != null) {
foreach($_SESSION['open'] as $key => $value) {
$_SESSION['open'][$key] = 1;
}
}
// save treecache
if(!empty($_SESSION['userid'])) {
$res = $this->CLASS['db']->query("UPDATE users SET treecache='".serialize($_SESSION['open'])."' WHERE id=".$_SESSION['userid']."");
}
$this->tree_reload("1");
}
// collapse tree
function tree_collapse() {
$_SESSION['firstrun'] = "no";
if ($_SESSION['open'] != null) {
foreach($_SESSION['open'] as $key => $value) {
$_SESSION['open'][$key] = 0;
}
}
// save treecache
if(!empty($_SESSION['userid'])) {
$res = $this->CLASS['db']->query("UPDATE users SET treecache='".serialize($_SESSION['open'])."' WHERE id=".$_SESSION['userid']."");
}
$this->tree_reload();
}
}
?>
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