function DerivativeDiscoveryDecorator::getDerivatives

Adds derivatives to a list of plugin definitions.

This should be called by the class extending this in DiscoveryInterface::getDefinitions().

File

core/lib/Drupal/Component/Plugin/Discovery/DerivativeDiscoveryDecorator.php, line 96

Class

DerivativeDiscoveryDecorator

Base class providing the tools for a plugin discovery to be derivative aware.

Namespace

Code

protected function getDerivatives(array $base_plugin_definitions) {
    $plugin_definitions = [];
    foreach ($base_plugin_definitions as $base_plugin_id => $plugin_definition) {
        $deriver = $this->getDeriver($base_plugin_id, $plugin_definition);
        if ($deriver) {
            $derivative_definitions = $deriver->getDerivativeDefinitions($plugin_definition);
            foreach ($derivative_definitions as $derivative_id => $derivative_definition) {
                $plugin_id = $this->encodePluginId($base_plugin_id, $derivative_id);
                // Use this definition as defaults if a plugin already defined
                // itself as this derivative.
                if ($derivative_id && isset($base_plugin_definitions[$plugin_id])) {
                    $derivative_definition = $this->mergeDerivativeDefinition($base_plugin_definitions[$plugin_id], $derivative_definition);
                }
                $plugin_definitions[$plugin_id] = $derivative_definition;
            }
        }
        elseif (!isset($plugin_definitions[$base_plugin_id])) {
            $plugin_definitions[$base_plugin_id] = $plugin_definition;
        }
    }
    return $plugin_definitions;
}