Proyectos de Subversion Moodle

<?php

// This file is part of Moodle - http://moodle.org/

//

// Moodle is free software: you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// (at your option) any later version.

//

// Moodle is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

//

// You should have received a copy of the GNU General Public License

// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**

 * Delete category form.

 *

 * @package core_course

 * @copyright 2002 onwards Martin Dougiamas (http://dougiamas.com)

 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

defined('MOODLE_INTERNAL') || die;

require_once($CFG->libdir . '/formslib.php');

require_once($CFG->libdir . '/questionlib.php');

/**

 * Delete category moodleform.

 * @package core_course

 * @copyright 2002 onwards Martin Dougiamas (http://dougiamas.com)

 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

class core_course_deletecategory_form extends moodleform {

    /**

     * The core_course_category object for that category being deleted.

     * @var core_course_category

     */

    protected $coursecat;

    /**

     * Defines the form.

     */

    public function definition() {

        $mform = $this->_form;

        $this->coursecat = $this->_customdata;

        $categorycontext = context_coursecat::instance($this->coursecat->id);

        $categoryname = $this->coursecat->get_formatted_name();

        // Check permissions, to see if it OK to give the option to delete

        // the contents, rather than move elsewhere.

        $candeletecontent = $this->coursecat->can_delete_full();

        // Get the list of categories we might be able to move to.

        $displaylist = $this->coursecat->move_content_targets_list();

        // Now build the options.

        $options = array();

        if ($displaylist) {

            $options[0] = get_string('movecontentstoanothercategory');

        }

        if ($candeletecontent) {

            $options[1] = get_string('deleteallcannotundo');

        }

        if (empty($options)) {

            throw new \moodle_exception('youcannotdeletecategory', 'error', 'index.php', $categoryname);

        }

        // Now build the form.

        $mform->addElement('header', 'general', get_string('categorycurrentcontents', '', $categoryname));

        // Describe the contents of this category.

        $contents = '';

        if ($this->coursecat->has_children()) {

            $contents .= html_writer::tag('li', get_string('subcategories'));

        }

        if ($this->coursecat->has_courses()) {

            $contents .= html_writer::tag('li', get_string('courses'));

        }

        if (question_context_has_any_questions($categorycontext)) {

            $contents .= html_writer::tag('li', get_string('questionsinthequestionbank'));

        }

        // Check if plugins can provide more info.

        $pluginfunctions = $this->coursecat->get_plugins_callback_function('get_course_category_contents');

        foreach ($pluginfunctions as $pluginfunction) {

            if ($plugincontents = $pluginfunction($this->coursecat)) {

                $contents .= html_writer::tag('li', $plugincontents);

            }

        }

        if (!empty($contents)) {

            $mform->addElement('static', 'emptymessage', get_string('thiscategorycontains'), html_writer::tag('ul', $contents));

        } else {

            $mform->addElement('static', 'emptymessage', '', get_string('deletecategoryempty'));

        }

        // Give the options for what to do.

        $mform->addElement('select', 'fulldelete', get_string('whattodo'), $options);

        if (count($options) == 1) {

            // Freeze selector if only one option available.

            $optionkeys = array_keys($options);

            $option = reset($optionkeys);

            $mform->hardFreeze('fulldelete');

            $mform->setConstant('fulldelete', $option);

        }

        if ($displaylist) {

            $mform->addElement('autocomplete', 'newparent', get_string('movecategorycontentto'), $displaylist);

            if (in_array($this->coursecat->parent, $displaylist)) {

                $mform->setDefault('newparent', $this->coursecat->parent);

            }

            $mform->hideIf('newparent', 'fulldelete', 'eq', '1');

        }

        $mform->addElement('hidden', 'categoryid', $this->coursecat->id);

        $mform->setType('categoryid', PARAM_ALPHANUM);

        $mform->addElement('hidden', 'action', 'deletecategory');

        $mform->setType('action', PARAM_ALPHANUM);

        $this->add_action_buttons(true, get_string('delete'));

    }

    /**

     * Perform some extra moodle validation.

     *

     * @param array $data

     * @param array $files

     * @return array An array of errors.

     */

    public function validation($data, $files) {

        $errors = parent::validation($data, $files);

        if (empty($data['fulldelete']) && empty($data['newparent'])) {

            // When they have chosen the move option, they must specify a destination.

            $errors['newparent'] = get_string('required');

            return $errors;

        }

        if (!empty($data['newparent']) && !$this->coursecat->can_move_content_to($data['newparent'])) {

            $errors['newparent'] = get_string('movecatcontentstoselected', 'error');

        }

        return $errors;

    }

}