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<?php
/**
* ---------------------------------------------------------------------
*
* GLPI - Gestionnaire Libre de Parc Informatique
*
* http://glpi-project.org
*
* @copyright 2015-2023 Teclib' and contributors.
* @copyright 2003-2014 by the INDEPNET Development Team.
* @licence https://www.gnu.org/licenses/gpl-3.0.html
*
* ---------------------------------------------------------------------
*
* LICENSE
*
* This file is part of GLPI.
*
* 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 3 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, see <https://www.gnu.org/licenses/>.
*
* ---------------------------------------------------------------------
*/
/// Class CommonImplicitTreeDropdown : Manage implicit tree, ie., trees that cannot be manage by
/// the user. For instance, Network hierarchy only depends on network addresses and netmasks.
/// @since 0.84
class CommonImplicitTreeDropdown extends CommonTreeDropdown
{
public $can_be_translated = true;
public function getForbiddenStandardMassiveAction()
{
$forbidden = parent::getForbiddenStandardMassiveAction();
$forbidden[] = 'CommonTreeDropdown' . MassiveAction::CLASS_ACTION_SEPARATOR . 'move_under';
return $forbidden;
}
/**
* Method that must be overloaded. This method provides the ancestor of the current item
* according to $this->input
*
* @return integer the id of the current object ancestor
**/
public function getNewAncestor()
{
return 0; // By default, we rattach to the root element
}
/**
* Method that must be overloaded. This method provides the list of all potential sons of the
* current item according to $this->fields.
*
* @return array of IDs of the potential sons
**/
public function getPotentialSons()
{
return []; // By default, we don't have any son
}
public function prepareInputForAdd($input)
{
$input[$this->getForeignKeyField()] = $this->getNewAncestor();
// We call the parent to manage tree
return parent::prepareInputForAdd($input);
}
public function prepareInputForUpdate($input)
{
$input[$this->getForeignKeyField()] = $this->getNewAncestor();
// We call the parent to manage tree
return parent::prepareInputForUpdate($input);
}
public function post_addItem()
{
$this->alterElementInsideTree("add");
parent::post_addItem();
}
public function post_updateItem($history = 1)
{
$this->alterElementInsideTree("update");
parent::post_updateItem($history);
}
public function pre_deleteItem()
{
$this->alterElementInsideTree("delete");
return parent::pre_deleteItem();
}
/**
* The haveChildren=false must be define to be sure that CommonDropdown allows the deletion of a
* node of the tree
**/
public function haveChildren()
{
return false;
}
// Key function to manage the children of the node
private function alterElementInsideTree($step)
{
global $DB;
$oldParent = null;
$newParent = null;
$potentialSons = [];
switch ($step) {
case 'add':
$newParent = $this->input[$this->getForeignKeyField()];
$potentialSons = $this->getPotentialSons();
break;
case 'update':
$oldParent = $this->fields[$this->getForeignKeyField()];
$newParent = $this->input[$this->getForeignKeyField()];
$potentialSons = $this->getPotentialSons();
break;
case 'delete':
$oldParent = $this->fields[$this->getForeignKeyField()];
$potentialSons = []; // Because there is no future sons !
break;
}
/** Here :
* $oldParent contains the old parent, to check its sons to attach them to it
* $newParent contains the new parent, to check its sons to potentially attach them to this
* item.
* $potentialSons list ALL potential childrens (sons as well as grandsons). That is use to
* update them. (See getPotentialSons())
**/
if ($step != "add" && count($potentialSons)) { // Because there is no old sons of new node
// First, get all my current direct sons (old ones) that are not new potential sons
$iterator = $DB->request([
'SELECT' => ['id'],
'FROM' => $this->getTable(),
'WHERE' => [
$this->getForeignKeyField() => $this->getID(),
'NOT' => ['id' => $potentialSons]
]
]);
$oldSons = [];
foreach ($iterator as $oldSon) {
$oldSons[] = $oldSon["id"];
}
if (count($oldSons) > 0) { // Then make them pointing to old parent
$DB->update(
$this->getTable(),
[
$this->getForeignKeyField() => $oldParent
],
[
'id' => $oldSons
]
);
// Then, regenerate the old sons to reflect there new ancestors
$this->regenerateTreeUnderID($oldParent, true, true);
$this->cleanParentsSons($oldParent);
}
}
if ($step != "delete" && count($potentialSons)) { // Because ther is no new sons for deleted nodes
// And, get all direct sons of my new Father that must be attached to me (ie : that are
// potential sons
$iterator = $DB->request([
'SELECT' => ['id'],
'FROM' => $this->getTable(),
'WHERE' => [
$this->getForeignKeyField() => $newParent,
'id' => $potentialSons
]
]);
$newSons = [];
foreach ($iterator as $newSon) {
$newSons[] = $newSon["id"];
}
if (count($newSons) > 0) { // Then make them pointing to me
$DB->update(
$this->getTable(),
[
$this->getForeignKeyField() => $this->getID()
],
[
'id' => $newSons
]
);
// Then, regenerate the new sons to reflect there new ancestors
$this->regenerateTreeUnderID($this->getID(), true, true);
$this->cleanParentsSons();
}
}
}
}