function RulesPlugin::setParent

Sets a new parent element.

File

includes/rules.core.inc, line 489

Class

RulesPlugin

Base class for rules plugins.

Code

public function setParent(RulesContainerPlugin $parent) {
    if ($this->parent == $parent) {
        return;
    }
    if (isset($this->parent) && ($key = array_search($this, $this->parent->children)) !== FALSE) {
        // Remove element from any previous parent.
        unset($this->parent->children[$key]);
        $this->parent
            ->resetInternalCache();
    }
    // Make sure the interface matches the type of the container.
    if ($parent instanceof RulesActionContainer && $this instanceof RulesActionInterface || $parent instanceof RulesConditionContainer && $this instanceof RulesConditionInterface) {
        $this->parent = $parent;
        $parent->children[] = $this;
        $this->parent
            ->resetInternalCache();
    }
    else {
        throw new RulesEvaluationException('The given container is incompatible with this element.', array(), $this, RulesLog::ERROR);
    }
}