icingaweb2/application/forms/Config/UserGroup/UserGroupBackendForm.php

<?php
/* Icinga Web 2 | (c) 2013-2015 Icinga Development Team | GPLv2+ */

namespace Icinga\Forms\Config\UserGroup;

use InvalidArgumentException;
use Icinga\Exception\IcingaException;
use Icinga\Exception\NotFoundError;
use Icinga\Forms\ConfigForm;

/**
 * Form for managing user group backends
 */
class UserGroupBackendForm extends ConfigForm
{
    /**
     * Initialize this form
     */
    public function init()
    {
        $this->setName('form_config_usergroupbackend');
        $this->setSubmitLabel($this->translate('Save Changes'));
    }

    /**
     * Return a form object for the given backend type
     *
     * @param   string      $type   The backend type for which to return a form
     *
     * @return  Form
     */
    public function getBackendForm($type)
    {
        if ($type === 'db') {
            return new DbUserGroupBackendForm();
        } else {
            throw new InvalidArgumentException(sprintf($this->translate('Invalid backend type "%s" provided'), $type));
        }
    }

    /**
     * Populate the form with the given backend's config
     *
     * @param   string  $name
     *
     * @return  $this
     *
     * @throws  NotFoundError   In case no backend with the given name is found
     */
    public function load($name)
    {
        if (! $this->config->hasSection($name)) {
            throw new NotFoundError('No user group backend called "%s" found', $name);
        }

        $data = $this->config->getSection($name)->toArray();
        $data['type'] = $data['backend'];
        $data['name'] = $name;
        $this->populate($data);
        return $this;
    }

    /**
     * Add a new user group backend
     *
     * @param   array   $data
     *
     * @return  $this
     *
     * @throws  InvalidArgumentException    In case $data does not contain a backend name
     * @throws  IcingaException             In case a backend with the same name already exists
     */
    public function add(array $data)
    {
        if (! isset($data['name'])) {
            throw new InvalidArgumentException('Key \'name\' missing');
        }

        $backendName = $data['name'];
        if ($this->config->hasSection($backendName)) {
            throw new IcingaException('A user group backend with the name "%s" does already exist', $backendName);
        }

        unset($data['name']);
        $this->config->setSection($backendName, $data);
        return $this;
    }

    /**
     * Edit a user group backend
     *
     * @param   string  $name
     * @param   array   $data
     *
     * @return  $this
     *
     * @throws  NotFoundError   In case no backend with the given name is found
     */
    public function edit($name, array $data)
    {
        if (! $this->config->hasSection($name)) {
            throw new NotFoundError('No user group backend called "%s" found', $name);
        }

        $backendConfig = $this->config->getSection($name);
        if (isset($data['name']) && $data['name'] !== $name) {
            $this->config->removeSection($name);
            $name = $data['name'];
            unset($data['name']);
        }

        $this->config->setSection($name, $backendConfig->merge($data));
        return $this;
    }

    /**
     * Remove a user group backend
     *
     * @param   string  $name
     *
     * @return  $this
     */
    public function delete($name)
    {
        $this->config->removeSection($name);
        return $this;
    }

    /**
     * Create and add elements to this form
     *
     * @param   array   $formData
     */
    public function createElements(array $formData)
    {
        $this->addElement(
            'text',
            'name',
            array(
                'required'      => true,
                'label'         => $this->translate('Backend Name'),
                'description'   => $this->translate(
                    'The name of this user group backend that is used to differentiate it from others'
                ),
                'validators'    => array(
                    array(
                        'Regex',
                        false,
                        array(
                            'pattern'  => '/^[^\\[\\]:]+$/',
                            'messages' => array(
                                'regexNotMatch' => $this->translate(
                                    'The backend name cannot contain \'[\', \']\' or \':\'.'
                                )
                            )
                        )
                    )
                )
            )
        );

        // TODO(jom): We did not think about how to configure custom group backends yet!
        $backendTypes = array(
            'db'    => $this->translate('Database')
        );

        $backendType = isset($formData['type']) ? $formData['type'] : null;
        if ($backendType === null) {
            $backendType = key($backendTypes);
        }

        $this->addElement(
            'hidden',
            'backend',
            array(
                'disabled'  => true, // Prevents the element from being submitted, see #7717
                'value'     => $backendType
            )
        );

        $this->addElement(
            'select',
            'type',
            array(
                'ignore'            => true,
                'required'          => true,
                'autosubmit'        => true,
                'label'             => $this->translate('Backend Type'),
                'description'       => $this->translate('The type of this user group backend'),
                'multiOptions'      => $backendTypes
            )
        );

        $backendForm = $this->getBackendForm($backendType);
        $backendForm->createElements($formData);
        $this->addElements($backendForm->getElements());
    }
}