/**
* @throws Exception
* @throws NotSupportedException
*/
public function beforeSave()
{
if ($this->node !== null && !$this->node->getIsNewRecord()) {
$this->node->refresh();
}
switch ($this->operation) {
case self::OPERATION_MAKE_ROOT:
$item = $this->owner->getAttribute($this->itemAttribute);
if ($item !== null) {
$this->owner->setAttribute($this->pathAttribute, $item);
}
$this->owner->setAttribute($this->depthAttribute, 0);
break;
case self::OPERATION_PREPEND_TO:
$this->checkNode(false);
$item = $this->owner->getAttribute($this->itemAttribute);
if ($item !== null) {
$path = $this->node->getAttribute($this->pathAttribute);
$this->owner->setAttribute($this->pathAttribute, $path . $this->delimiter . $item);
}
$this->owner->setAttribute($this->depthAttribute, $this->node->getAttribute($this->depthAttribute) + 1);
if ($this->sortAttribute !== null) {
$to = $this->node->getChildren()->orderBy(null)->min($this->sortAttribute);
$to = $to !== null ? $to - $this->step : 0;
$this->owner->setAttribute($this->sortAttribute, $to);
}
break;
case self::OPERATION_APPEND_TO:
$this->checkNode(false);
$item = $this->owner->getAttribute($this->itemAttribute);
if ($item !== null) {
$path = $this->node->getAttribute($this->pathAttribute);
$this->owner->setAttribute($this->pathAttribute, $path . $this->delimiter . $item);
}
$this->owner->setAttribute($this->depthAttribute, $this->node->getAttribute($this->depthAttribute) + 1);
if ($this->sortAttribute !== null) {
$to = $this->node->getChildren()->orderBy(null)->max($this->sortAttribute);
$to = $to !== null ? $to + $this->step : 0;
$this->owner->setAttribute($this->sortAttribute, $to);
}
break;
case self::OPERATION_INSERT_BEFORE:
$this->checkNode(true);
$item = $this->owner->getAttribute($this->itemAttribute);
if ($item !== null) {
$path = $this->getParentPath($this->node->getAttribute($this->pathAttribute));
$this->owner->setAttribute($this->pathAttribute, $path . $this->delimiter . $item);
}
$this->owner->setAttribute($this->depthAttribute, $this->node->getAttribute($this->depthAttribute));
if ($this->sortAttribute !== null) {
$this->moveTo($this->node->getAttribute($this->sortAttribute) - 1, false);
}
break;
case self::OPERATION_INSERT_AFTER:
$this->checkNode(true);
$item = $this->owner->getAttribute($this->itemAttribute);
if ($item !== null) {
$path = $this->getParentPath($this->node->getAttribute($this->pathAttribute));
$this->owner->setAttribute($this->pathAttribute, $path . $this->delimiter . $item);
}
$this->owner->setAttribute($this->depthAttribute, $this->node->getAttribute($this->depthAttribute));
if ($this->sortAttribute !== null) {
$this->moveTo($this->node->getAttribute($this->sortAttribute) + 1, true);
}
break;
default:
if ($this->owner->getIsNewRecord()) {
throw new NotSupportedException('Method "' . $this->owner->className() . '::insert" is not supported for inserting new nodes.');
}
$item = $this->owner->getAttribute($this->itemAttribute);
$path = $this->getParentPath($this->owner->getAttribute($this->pathAttribute));
$this->owner->setAttribute($this->pathAttribute, $path . $this->delimiter . $item);
}
}
