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<?php
/*
** Zabbix
** Copyright (C) 2001-2019 Zabbix SIA
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
**/
/**
* A class for rendering HTML trees.
*/
class CTree {
protected $tree;
private $fields;
private $treename;
private $size;
private $maxlevel;
public function __construct($treename, $value = [], $fields = []) {
$this->maxlevel = 0;
$this->tree = $value;
$this->fields = $fields;
$this->treename = $treename;
$this->size = count($value);
if (!$this->checkTree()) {
$this->destroy();
return false;
}
else {
$this->countDepth();
}
}
public function getTree() {
return $this->tree;
}
public function getHTML() {
$html[] = $this->createJS();
$html[] = $this->simpleHTML();
return $html;
}
private function makeHeaders() {
$headers = array_values($this->fields);
$keys = array_keys($this->fields);
array_shift($keys);
$this->fields = $keys;
return $headers;
}
private function simpleHTML() {
$table = (new CTableInfo())
->setHeader($this->makeHeaders());
foreach ($this->tree as $id => $rows) {
$table->addRow($this->makeRow($id));
}
return $table;
}
private function makeRow($id) {
$tr = (new CRow())->setId('id_'.$id);
if ($this->tree[$id]['parentid'] != 0) {
$tr->setAttribute('style', 'display: none;');
}
$tr->addItem($this->makeCell($id));
foreach ($this->fields as $value) {
$tr->addItem($this->makeCol($id, $value));
}
return $tr;
}
/**
* Returns a column object for the given row and field.
*
* @param $rowId
* @param $colName
*
* @return CCol
*/
protected function makeCol($rowId, $colName) {
return new CCol($this->tree[$rowId][$colName]);
}
private function makeCell($id) {
$td = new CCol();
$caption = new CSpan();
if ($id != 0 && array_key_exists('childnodes', $this->tree[$id])) {
$caption->addItem((new CSimpleButton((new CSpan())->addClass('arrow-right')))
->addClass(ZBX_STYLE_TREEVIEW)
->onClick($this->treename.'.closeSNodeX("'.$id.'", this.getElementsByTagName(\'span\')[0]);')
->setId('idi_'.$id)
);
}
$caption->addItem($this->tree[$id]['caption']);
if ($this->tree[$id]['Level'] != 0) {
$level = $this->tree[$id]['Level'];
$caption->setAttribute('style', 'padding-left:'.(2 * $level).'em;');
}
$td->addItem($caption);
return $td;
}
private function countDepth() {
foreach ($this->tree as $id => $rows) {
if ($rows['id'] == 0) {
$this->tree[$id]['Level'] = 0;
continue;
}
$parentid = $this->tree[$id]['parentid'];
$this->tree[$parentid]['nodetype'] = 2;
$this->tree[$id]['Level'] = isset($this->tree[$parentid]['Level']) ? $this->tree[$parentid]['Level'] + 1 : 1;
if ($this->maxlevel < $this->tree[$id]['Level']) {
$this->maxlevel = $this->tree[$id]['Level'];
}
}
}
public function createJS() {
$js = '<script src="js/class.ctree.js" type="text/javascript"></script>'."\n".
'<script type="text/javascript"> var '.$this->treename.'_tree = {};';
foreach ($this->tree as $id => $rows) {
$parentid = $rows['parentid'];
$this->tree[$parentid]['nodelist'] .= $id.',';
}
foreach ($this->tree as $id => $rows) {
if ($rows['nodetype'] == '2') {
$rows['nodelist'] = rtrim($rows['nodelist'], ',');
$js .= $this->treename.'_tree[\''.$id.'\'] = { status: \'close\', nodelist : \''.$rows['nodelist'].'\', parentid : \''.$rows['parentid'].'\'};';
$js .= "\n";
}
}
$js.= 'var '.$this->treename.' = null';
$js.= '</script>'."\n";
zbx_add_post_js($this->treename.' = new CTree("tree_'.CWebUser::$data['alias'].'_'.$this->treename.'", '.$this->treename.'_tree);');
return new CJsScript($js);
}
private function checkTree() {
if (!is_array($this->tree)) {
return false;
}
foreach ($this->tree as $id => $cell) {
$this->tree[$id]['nodetype'] = 0;
$parentid = $cell['parentid'];
$this->tree[$parentid]['childnodes'][] = $id;
$this->tree[$id]['nodelist'] = '';
}
return true;
}
private function destroy() {
unset($this->tree);
}
}
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