Method setupUninstall

/**
 * Method to do any prechecks and setup the uninstall job
 *
 * @return  void
 *
 * @since   4.0.0
 */
protected function setupUninstall()
{
    // Grab a copy of the client details
    $client = ApplicationHelper::getClientInfo($this->extension->client_id);
    // Check the element isn't blank to prevent nuking the languages directory...just in case
    if (empty($this->extension->element)) {
        throw new \RuntimeException(Text::_('JLIB_INSTALLER_ERROR_LANG_UNINSTALL_ELEMENT_EMPTY'));
    }
    // Verify that it's not the default language for that client
    $params = ComponentHelper::getParams('com_languages');
    if ($params->get($client->name) === $this->extension->element) {
        throw new \RuntimeException(Text::_('JLIB_INSTALLER_ERROR_LANG_UNINSTALL_DEFAULT'));
    }
    // Construct the path from the client, the language and the extension element name
    $path = $client->path . '/language/' . $this->extension->element;
    // Get the package manifest object and remove media
    $this->parent->setPath('source', $path);
    // Check it exists
    if (!Folder::exists($path)) {
        // If the folder doesn't exist lets just nuke the row as well and presume the user killed it for us
        $this->extension->delete();
        throw new \RuntimeException(Text::_('JLIB_INSTALLER_ERROR_LANG_UNINSTALL_PATH_EMPTY'));
    }
    // We do findManifest to avoid problem when uninstalling a list of extension: getManifest cache its manifest file
    $this->parent->findManifest();
    $this->setManifest($this->parent->getManifest());
}