/**
* Returns the plugin ID for a given toolkit and operation.
*
* @param \Drupal\Core\ImageToolkit\ImageToolkitInterface $toolkit
* The toolkit instance.
* @param string $operation
* The operation (e.g. "crop").
*
* @return string
* The plugin ID.
*
* @throws \Drupal\Component\Plugin\Exception\PluginNotFoundException
* When no plugin is available.
*/
protected function getToolkitOperationPluginId(ImageToolkitInterface $toolkit, $operation)
{
$toolkit_id = $toolkit->getPluginId();
$definitions = $this->getDefinitions();
$definitions = array_filter($definitions, function ($definition) use($toolkit_id, $operation) {
return $definition['toolkit'] == $toolkit_id && $definition['operation'] == $operation;
});
if (!$definitions) {
// If this image toolkit plugin is a derivative and returns no operation,
// try once again with its base plugin.
$base_toolkit_id = $toolkit->getBaseId();
if ($toolkit_id != $base_toolkit_id && !empty($base_toolkit_id)) {
$base_toolkit = $this->toolkitManager->createInstance($base_toolkit_id);
return $this->getToolkitOperationPluginId($base_toolkit, $operation);
}
$message = SafeMarkup::format("No image operation plugin for '@toolkit' toolkit and '@operation' operation.", array('@toolkit' => $toolkit_id, '@operation' => $operation));
throw new PluginNotFoundException($toolkit_id . '.' . $operation, $message);
} else {
// Pickup the first plugin found.
// @todo In https://www.drupal.org/node/2110591 we'll return here the UI
// selected plugin or the first found if missed.
$definition = reset($definitions);
return $definition['id'];
}
}
/**
* Constructs a ImageToolkitForm object.
*
* @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
* The factory for configuration objects.
* @param \Drupal\Core\ImageToolkit\ImageToolkitManager $manager
* The image toolkit plugin manager.
*/
public function __construct(ConfigFactoryInterface $config_factory, ImageToolkitManager $manager)
{
parent::__construct($config_factory);
foreach ($manager->getAvailableToolkits() as $id => $definition) {
$this->availableToolkits[$id] = $manager->createInstance($id);
}
}
/**
* Returns the image file extensions supported by the toolkit.
*
* @param string|null $toolkit_id
* (optional) The ID of the image toolkit to use for checking, or NULL
* to use the current toolkit.
*
* @return array
* An array of supported image file extensions (e.g. png/jpeg/gif).
*
* @see \Drupal\Core\ImageToolkit\ImageToolkitInterface::getSupportedExtensions()
*/
public function getSupportedExtensions($toolkit_id = NULL)
{
$toolkit_id = $toolkit_id ?: $this->toolkitId;
$definition = $this->toolkitManager->getDefinition($toolkit_id);
return call_user_func($definition['class'] . '::getSupportedExtensions');
}