moodle /lib/form/datetimeselector.php

Language PHP Lines 326
MD5 Hash f0f648915103fccc25c8ceb58ca04f75 Estimated Cost $4,542 (why?)
Repository git://github.com/moodle/moodle.git View Raw File View Project SPDX
  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
<?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/>.


/**
 * Group of date and time input element
 *
 * Contains class for a group of elements used to input a date and time.
 *
 * @package   core_form
 * @copyright 2006 Jamie Pratt <me@jamiep.org>
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

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

/**
 * Element used to input a date and time.
 *
 * Class for a group of elements used to input a date and time.
 *
 * @package   core_form
 * @category  form
 * @copyright 2006 Jamie Pratt <me@jamiep.org>
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class MoodleQuickForm_date_time_selector extends MoodleQuickForm_group {

    /**
     * Options for the element.
     *
     * startyear => int start of range of years that can be selected
     * stopyear => int last year that can be selected
     * defaulttime => default time value if the field is currently not set
     * timezone => int|float|string (optional) timezone modifier used for edge case only.
     *      If not specified, then date is caclulated based on current user timezone.
     *      Note: dst will be calculated for string timezones only
     *      {@link http://docs.moodle.org/dev/Time_API#Timezone}
     * step => step to increment minutes by
     * optional => if true, show a checkbox beside the date to turn it on (or off)
     * @var array
     */
    protected $_options = array();

    /**
     * @var array These complement separators, they are appended to the resultant HTML.
     */
    protected $_wrap = array('', '');

    /**
     * @var null|bool Keeps track of whether the date selector was initialised using createElement
     *                or addElement. If true, createElement was used signifying the element has been
     *                added to a group - see MDL-39187.
     */
    protected $_usedcreateelement = true;

    /**
     * Class constructor
     *
     * @param string $elementName Element's name
     * @param mixed $elementLabel Label(s) for an element
     * @param array $options Options to control the element's display
     * @param mixed $attributes Either a typical HTML attribute string or an associative array
     */
    public function __construct($elementName = null, $elementLabel = null, $options = array(), $attributes = null) {
        // Get the calendar type used - see MDL-18375.
        $calendartype = \core_calendar\type_factory::get_calendar_instance();
        $this->_options = array('startyear' => $calendartype->get_min_year(), 'stopyear' => $calendartype->get_max_year(),
            'defaulttime' => 0, 'timezone' => 99, 'step' => 5, 'optional' => false);

        // TODO MDL-52313 Replace with the call to parent::__construct().
        HTML_QuickForm_element::__construct($elementName, $elementLabel, $attributes);
        $this->_persistantFreeze = true;
        $this->_appendName = true;
        $this->_type = 'date_time_selector';
        // set the options, do not bother setting bogus ones
        if (is_array($options)) {
            foreach ($options as $name => $value) {
                if (isset($this->_options[$name])) {
                    if (is_array($value) && is_array($this->_options[$name])) {
                        $this->_options[$name] = @array_merge($this->_options[$name], $value);
                    } else {
                        $this->_options[$name] = $value;
                    }
                }
            }
        }

        // The YUI2 calendar only supports the gregorian calendar type.
        if ($calendartype->get_name() === 'gregorian') {
            form_init_date_js();
        }
    }

    /**
     * Old syntax of class constructor. Deprecated in PHP7.
     *
     * @deprecated since Moodle 3.1
     */
    public function MoodleQuickForm_date_time_selector($elementName = null, $elementLabel = null, $options = array(), $attributes = null) {
        debugging('Use of class name as constructor is deprecated', DEBUG_DEVELOPER);
        self::__construct($elementName, $elementLabel, $options, $attributes);
    }

    /**
     * This will create date group element constisting of day, month and year.
     *
     * @access private
     */
    function _createElements() {
        global $OUTPUT;

        // Get the calendar type used - see MDL-18375.
        $calendartype = \core_calendar\type_factory::get_calendar_instance();

        for ($i = 0; $i <= 23; $i++) {
            $hours[$i] = sprintf("%02d", $i);
        }
        for ($i = 0; $i < 60; $i += $this->_options['step']) {
            $minutes[$i] = sprintf("%02d", $i);
        }

        $this->_elements = array();
        $dateformat = $calendartype->get_date_order($this->_options['startyear'], $this->_options['stopyear']);
        foreach ($dateformat as $key => $date) {
            // E_STRICT creating elements without forms is nasty because it internally uses $this
            $this->_elements[] = @MoodleQuickForm::createElement('select', $key, get_string($key, 'form'), $date, $this->getAttributes(), true);
        }
        if (right_to_left()) {   // Switch order of elements for Right-to-Left
            $this->_elements[] = @MoodleQuickForm::createElement('select', 'minute', get_string('minute', 'form'), $minutes, $this->getAttributes(), true);
            $this->_elements[] = @MoodleQuickForm::createElement('select', 'hour', get_string('hour', 'form'), $hours, $this->getAttributes(), true);
        } else {
            $this->_elements[] = @MoodleQuickForm::createElement('select', 'hour', get_string('hour', 'form'), $hours, $this->getAttributes(), true);
            $this->_elements[] = @MoodleQuickForm::createElement('select', 'minute', get_string('minute', 'form'), $minutes, $this->getAttributes(), true);
        }
        // The YUI2 calendar only supports the gregorian calendar type so only display the calendar image if this is being used.
        if ($calendartype->get_name() === 'gregorian') {
            $image = $OUTPUT->pix_icon('i/calendar', get_string('calendar', 'calendar'), 'moodle');
            $this->_elements[] = @MoodleQuickForm::createElement('link', 'calendar',
                    null, '#', $image,
                    array('class' => 'visibleifjs'));
        }
        // If optional we add a checkbox which the user can use to turn if on
        if ($this->_options['optional']) {
            $this->_elements[] = @MoodleQuickForm::createElement('checkbox', 'enabled', null, get_string('enable'), $this->getAttributes(), true);
        }
        foreach ($this->_elements as $element){
            if (method_exists($element, 'setHiddenLabel')){
                $element->setHiddenLabel(true);
            }
        }

    }

    /**
     * Called by HTML_QuickForm whenever form event is made on this element
     *
     * @param string $event Name of event
     * @param mixed $arg event arguments
     * @param object $caller calling object
     * @return bool
     */
    function onQuickFormEvent($event, $arg, &$caller) {
        switch ($event) {
            case 'updateValue':
                // Constant values override both default and submitted ones
                // default values are overriden by submitted.
                $value = $this->_findValue($caller->_constantValues);
                if (null === $value) {
                    // If no boxes were checked, then there is no value in the array
                    // yet we don't want to display default value in this case.
                    if ($caller->isSubmitted()) {
                        $value = $this->_findValue($caller->_submitValues);
                    } else {
                        $value = $this->_findValue($caller->_defaultValues);
                    }
                }
                $requestvalue=$value;
                if ($value == 0) {
                    $value = $this->_options['defaulttime'];
                    if (!$value) {
                        $value = time();
                    }
                }
                if (!is_array($value)) {
                    $calendartype = \core_calendar\type_factory::get_calendar_instance();
                    $currentdate = $calendartype->timestamp_to_date_array($value, $this->_options['timezone']);
                    // Round minutes to the previous multiple of step.
                    $currentdate['minutes'] -= $currentdate['minutes'] % $this->_options['step'];
                    $value = array(
                        'minute' => $currentdate['minutes'],
                        'hour' => $currentdate['hours'],
                        'day' => $currentdate['mday'],
                        'month' => $currentdate['mon'],
                        'year' => $currentdate['year']);
                    // If optional, default to off, unless a date was provided.
                    if ($this->_options['optional']) {
                        $value['enabled'] = $requestvalue != 0;
                    }
                } else {
                    $value['enabled'] = isset($value['enabled']);
                }
                if (null !== $value) {
                    $this->setValue($value);
                }
                break;
            case 'createElement':
                if ($arg[2]['optional']) {
                    // When using the function addElement, rather than createElement, we still
                    // enter this case, making this check necessary.
                    if ($this->_usedcreateelement) {
                        $caller->disabledIf($arg[0] . '[day]', $arg[0] . '[enabled]');
                        $caller->disabledIf($arg[0] . '[month]', $arg[0] . '[enabled]');
                        $caller->disabledIf($arg[0] . '[year]', $arg[0] . '[enabled]');
                        $caller->disabledIf($arg[0] . '[hour]', $arg[0] . '[enabled]');
                        $caller->disabledIf($arg[0] . '[minute]', $arg[0] . '[enabled]');
                    } else {
                        $caller->disabledIf($arg[0], $arg[0] . '[enabled]');
                    }
                }
                return parent::onQuickFormEvent($event, $arg, $caller);
                break;
            case 'addElement':
                $this->_usedcreateelement = false;
                return parent::onQuickFormEvent($event, $arg, $caller);
                break;
            default:
                return parent::onQuickFormEvent($event, $arg, $caller);
        }
    }

    /**
     * Returns HTML for advchecbox form element.
     *
     * @return string
     */
    function toHtml() {
        include_once('HTML/QuickForm/Renderer/Default.php');
        $renderer = new HTML_QuickForm_Renderer_Default();
        $renderer->setElementTemplate('{element}');
        parent::accept($renderer);

        $html = $this->_wrap[0];
        if ($this->_usedcreateelement) {
            $html .= html_writer::tag('span', $renderer->toHtml(), array('class' => 'fdate_time_selector'));
        } else {
            $html .= $renderer->toHtml();
        }
        $html .= $this->_wrap[1];

        return $html;
    }

    /**
     * Accepts a renderer
     *
     * @param HTML_QuickForm_Renderer $renderer An HTML_QuickForm_Renderer object
     * @param bool $required Whether a group is required
     * @param string $error An error message associated with a group
     */
    function accept(&$renderer, $required = false, $error = null) {
        $renderer->renderElement($this, $required, $error);
    }

    /**
     * Output a timestamp. Give it the name of the group.
     *
     * @param array $submitValues values submitted.
     * @param bool $assoc specifies if returned array is associative
     * @return array
     */
    function exportValue(&$submitValues, $assoc = false) {
        $value = null;
        $valuearray = array();
        foreach ($this->_elements as $element){
            $thisexport = $element->exportValue($submitValues[$this->getName()], true);
            if ($thisexport!=null){
                $valuearray += $thisexport;
            }
        }
        if (count($valuearray)){
            if($this->_options['optional']) {
                // If checkbox is on, the value is zero, so go no further
                if(empty($valuearray['enabled'])) {
                    $value[$this->getName()] = 0;
                    return $value;
                }
            }
            // Get the calendar type used - see MDL-18375.
            $calendartype = \core_calendar\type_factory::get_calendar_instance();
            $gregoriandate = $calendartype->convert_to_gregorian($valuearray['year'],
                                                                 $valuearray['month'],
                                                                 $valuearray['day'],
                                                                 $valuearray['hour'],
                                                                 $valuearray['minute']);
            $value[$this->getName()] = make_timestamp($gregoriandate['year'],
                                                      $gregoriandate['month'],
                                                      $gregoriandate['day'],
                                                      $gregoriandate['hour'],
                                                      $gregoriandate['minute'],
                                                      0,
                                                      $this->_options['timezone'],
                                                      true);

            return $value;
        } else {
            return null;
        }
    }
}
Back to Top