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<?php
/*
** Zabbix
** Copyright (C) 2001-2022 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.
**/
class CWidgetFieldNavTree extends CWidgetField {
/**
* Create widget field for Tags selection.
*
* @param string $name Field name in form.
* @param string $label Label for the field in form.
*/
public function __construct($name, $label) {
parent::__construct($name, $label);
$this->setSaveType(ZBX_WIDGET_FIELD_TYPE_STR);
$this->setValidationRules(['type' => API_OBJECTS, 'flags' => API_PRESERVE_KEYS, 'fields' => [
'name' => ['type' => API_STRING_UTF8, 'flags' => API_REQUIRED | API_NOT_EMPTY, 'length' => 255],
'order' => ['type' => API_INT32, 'in' => '1:'.ZBX_MAX_INT32, 'default' => 1],
'parent' => ['type' => API_INT32, 'in' => '0:'.ZBX_MAX_INT32, 'default' => 0],
'sysmapid' => ['type' => API_ID, 'default' => '0']
]]);
$this->setDefault([]);
}
public function setValue($value) {
$this->value = (array) $value;
return $this;
}
/**
* Prepares array entry for widget field, ready to be passed to CDashboard API functions.
* Reference is needed here to avoid array merging in CWidgetForm::fieldsToApi method. With large number of widget
* fields it causes significant performance decrease.
*
* @param array $widget_fields reference to Array of widget fields.
*/
public function toApi(array &$widget_fields = []) {
$value = $this->getValue();
foreach ($value as $index => $val) {
$widget_fields[] = [
'type' => $this->save_type,
'name' => $this->name.'.name.'.$index,
'value' => $val['name']
];
// Add default values to avoid check of key existence.
$val = array_merge([
'order' => 1,
'parent' => 0,
'sysmapid' => 0
], $val);
if ($val['order'] != 1) {
$widget_fields[] = [
'type' => ZBX_WIDGET_FIELD_TYPE_INT32,
'name' => $this->name.'.order.'.$index,
'value' => $val['order']
];
}
if ($val['parent'] != 0) {
$widget_fields[] = [
'type' => ZBX_WIDGET_FIELD_TYPE_INT32,
'name' => $this->name.'.parent.'.$index,
'value' => $val['parent']
];
}
if ($val['sysmapid'] != 0) {
$widget_fields[] = [
'type' => ZBX_WIDGET_FIELD_TYPE_MAP,
'name' => $this->name.'.sysmapid.'.$index,
'value' => $val['sysmapid']
];
}
}
}
/**
* Check and fix the tree of the maps.
*
* @param array $navtree_items
* @param string $navtree_items[<id>]['parent']
*
* @return array
*/
static private function validateNavTree(array $navtree_items, array &$errors) {
// Check for incorrect parent IDs.
foreach ($navtree_items as $fieldid => &$navtree_item) {
if ($navtree_item['parent'] != 0 && !array_key_exists($navtree_item['parent'], $navtree_items)) {
$errors[] = _s('Incorrect value for field "%1$s": %2$s.',
'navtree.parent.'.$fieldid, _('reference to a non-existent tree element')
);
$navtree_item['parent'] = 0;
}
}
unset($navtree_item);
// Find and fix circular dependencies.
foreach ($navtree_items as $fieldid => $navtree_item) {
$parentid = $navtree_item['parent'];
$parentids = [$parentid => true];
while ($parentid != 0) {
if (array_key_exists($navtree_items[$parentid]['parent'], $parentids)) {
$errors[] = _s('Incorrect value for field "%1$s": %2$s.',
'navtree.parent.'.$parentid, _('circular dependency is not allowed')
);
$navtree_items[$parentid]['parent'] = 0;
}
$parentid = $navtree_items[$parentid]['parent'];
}
}
return $navtree_items;
}
/**
* @param bool $strict
*
* @return array
*/
public function validate(bool $strict = false): array {
$errors = parent::validate($strict);
if (!$errors) {
$this->setValue(self::validateNavTree($this->getValue(), $errors));
}
return $errors;
}
}
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