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/>.

/**

 * Front-end class.

 *

 * @package availability_date

 * @copyright 2014 The Open University

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

 */

namespace availability_date;

defined('MOODLE_INTERNAL') || die();

/**

 * Front-end class.

 *

 * @package availability_date

 * @copyright 2014 The Open University

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

 */

class frontend extends \core_availability\frontend {

    /**

     * The date selector popup is not currently supported because the date

     * selector is in a messy state (about to be replaced with a new YUI3

     * implementation) and MDL-44814 was rejected. I have left the code in

     * place, but disabled. When the date selector situation is finalised,

     * then this constant should be removed (either applying MDL-44814 if old

     * selector is still in use, or modifying the JavaScript code to support the

     * new date selector if it has landed).

     *

     * @var bool

     */

    const DATE_SELECTOR_SUPPORTED = false;

    protected function get_javascript_strings() {

        return array('ajaxerror', 'direction_before', 'direction_from', 'direction_until',

                'direction_label', 'error_dateconflict');

    }

    /**

     * Given field values, obtains the corresponding timestamp.

     *

     * @param int $year Year

     * @param int $month Month

     * @param int $day Day

     * @param int $hour Hour

     * @param int $minute Minute

     * @return int Timestamp

     */

    public static function get_time_from_fields($year, $month, $day, $hour, $minute) {

        $calendartype = \core_calendar\type_factory::get_calendar_instance();

        $gregoriandate = $calendartype->convert_to_gregorian(

                $year, $month, $day, $hour, $minute);

        return make_timestamp($gregoriandate['year'], $gregoriandate['month'],

                $gregoriandate['day'], $gregoriandate['hour'], $gregoriandate['minute'], 0);

    }

    /**

     * Given a timestamp, obtains corresponding field values.

     *

     * @param int $time Timestamp

     * @return \stdClass Object with fields for year, month, day, hour, minute

     */

    public static function get_fields_from_time($time) {

        $calendartype = \core_calendar\type_factory::get_calendar_instance();

        $wrongfields = $calendartype->timestamp_to_date_array($time);

        return array('day' => $wrongfields['mday'],

                'month' => $wrongfields['mon'], 'year' => $wrongfields['year'],

                'hour' => $wrongfields['hours'], 'minute' => $wrongfields['minutes']);

    }

    protected function get_javascript_init_params($course, \cm_info $cm = null,

            \section_info $section = null) {

        global $CFG, $OUTPUT;

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

        // Support internationalised calendars.

        $calendartype = \core_calendar\type_factory::get_calendar_instance();

        // Get current date, but set time to 00:00 (to make it easier to

        // specify whole days) and change name of mday field to match below.

        $wrongfields = $calendartype->timestamp_to_date_array(time());

        $current = array('day' => $wrongfields['mday'],

                'month' => $wrongfields['mon'], 'year' => $wrongfields['year'],

                'hour' => 0, 'minute' => 0);

        // Time part is handled the same everywhere.

        $hours = array();

        for ($i = 0; $i <= 23; $i++) {

            $hours[$i] = sprintf("%02d", $i);

        }

        $minutes = array();

        for ($i = 0; $i < 60; $i += 5) {

            $minutes[$i] = sprintf("%02d", $i);

        }

        // List date fields.

        $fields = $calendartype->get_date_order(

                $calendartype->get_min_year(), $calendartype->get_max_year());

        // Add time fields - in RTL mode these are switched.

        $fields['split'] = '/';

        if (right_to_left()) {

            $fields['minute'] = $minutes;

            $fields['colon'] = ':';

            $fields['hour'] = $hours;

        } else {

            $fields['hour'] = $hours;

            $fields['colon'] = ':';

            $fields['minute'] = $minutes;

        }

        // Output all date fields.

        $html = '<span class="availability-group">';

        foreach ($fields as $field => $options) {

            if ($options === '/') {

                $html = rtrim($html);

                // In Gregorian calendar mode only, we support a date selector popup, reusing

                // code from form to ensure consistency.

                if ($calendartype->get_name() === 'gregorian' && self::DATE_SELECTOR_SUPPORTED) {

                    $image = $OUTPUT->pix_icon('i/calendar', get_string('calendar', 'calendar'), 'moodle');

                    $html .= ' ' . \html_writer::link('#', $image, array('name' => 'x[calendar]'));

                    form_init_date_js();

                }

                $html .= '</span> <span class="availability-group">';

                continue;

            }

            if ($options === ':') {

                $html .= ': ';

                continue;

            }

            $html .= \html_writer::start_tag('label');

            $html .= \html_writer::span(get_string($field) . ' ', 'accesshide');

            // NOTE: The fields need to have these weird names in order that they

            // match the standard Moodle form control, otherwise the date selector

            // won't find them.

            $html .= \html_writer::start_tag('select', array('name' => 'x[' . $field . ']', 'class' => 'custom-select'));

            foreach ($options as $key => $value) {

                $params = array('value' => $key);

                if ($current[$field] == $key) {

                    $params['selected'] = 'selected';

                }

                $html .= \html_writer::tag('option', s($value), $params);

            }

            $html .= \html_writer::end_tag('select');

            $html .= \html_writer::end_tag('label');

            $html .= ' ';

        }

        $html = rtrim($html) . '</span>';

        // Also get the time that corresponds to this default date.

        $time = self::get_time_from_fields($current['year'], $current['month'],

                $current['day'], $current['hour'], $current['minute']);

        return array($html, $time);

    }

}