1<?php
2if (!defined('MOODLE_INTERNAL')) {
3    die('Direct access to this script is forbidden.');    ///  It must be included from a Moodle page
4}
5
6require_once ($CFG->dirroot.'/course/moodleform_mod.php');
7
8class mod_choice_mod_form extends moodleform_mod {
9
10    function definition() {
11        global $CFG, $CHOICE_SHOWRESULTS, $CHOICE_PUBLISH, $CHOICE_DISPLAY, $DB;
12
13        $mform    =& $this->_form;
14
15//-------------------------------------------------------------------------------
16        $mform->addElement('header', 'general', get_string('general', 'form'));
17
18        $mform->addElement('text', 'name', get_string('choicename', 'choice'), array('size'=>'64'));
19        if (!empty($CFG->formatstringstriptags)) {
20            $mform->setType('name', PARAM_TEXT);
21        } else {
22            $mform->setType('name', PARAM_CLEANHTML);
23        }
24        $mform->addRule('name', null, 'required', null, 'client');
25        $mform->addRule('name', get_string('maximumchars', '', 255), 'maxlength', 255, 'client');
26
27        $this->standard_intro_elements(get_string('description', 'choice'));
28
29        $mform->addElement('select', 'display', get_string("displaymode","choice"), $CHOICE_DISPLAY);
30
31        //-------------------------------------------------------------------------------
32        $mform->addElement('header', 'optionhdr', get_string('options', 'choice'));
33
34        $mform->addElement('selectyesno', 'allowupdate', get_string("allowupdate", "choice"));
35
36        $mform->addElement('selectyesno', 'allowmultiple', get_string('allowmultiple', 'choice'));
37        if ($this->_instance) {
38            if ($DB->count_records('choice_answers', array('choiceid' => $this->_instance)) > 0) {
39                // Prevent user from toggeling the number of allowed answers once there are submissions.
40                $mform->freeze('allowmultiple');
41            }
42        }
43
44        $mform->addElement('selectyesno', 'limitanswers', get_string('limitanswers', 'choice'));
45        $mform->addHelpButton('limitanswers', 'limitanswers', 'choice');
46
47        $repeatarray = array();
48        $repeatarray[] = $mform->createElement('text', 'option', get_string('optionno', 'choice'));
49        $repeatarray[] = $mform->createElement('text', 'limit', get_string('limitno', 'choice'));
50        $repeatarray[] = $mform->createElement('hidden', 'optionid', 0);
51
52        if ($this->_instance){
53            $repeatno = $DB->count_records('choice_options', array('choiceid'=>$this->_instance));
54            $repeatno += 2;
55        } else {
56            $repeatno = 5;
57        }
58
59        $repeateloptions = array();
60        $repeateloptions['limit']['default'] = 0;
61        $repeateloptions['limit']['hideif'] = array('limitanswers', 'eq', 0);
62        $repeateloptions['limit']['rule'] = 'numeric';
63        $repeateloptions['limit']['type'] = PARAM_INT;
64
65        $repeateloptions['option']['helpbutton'] = array('choiceoptions', 'choice');
66        $mform->setType('option', PARAM_CLEANHTML);
67
68        $mform->setType('optionid', PARAM_INT);
69
70        $this->repeat_elements($repeatarray, $repeatno,
71                    $repeateloptions, 'option_repeats', 'option_add_fields', 3, null, true);
72
73        // Make the first option required
74        if ($mform->elementExists('option[0]')) {
75            $mform->addRule('option[0]', get_string('atleastoneoption', 'choice'), 'required', null, 'client');
76        }
77
78//-------------------------------------------------------------------------------
79        $mform->addElement('header', 'availabilityhdr', get_string('availability'));
80        $mform->addElement('date_time_selector', 'timeopen', get_string("choiceopen", "choice"),
81            array('optional' => true));
82
83        $mform->addElement('date_time_selector', 'timeclose', get_string("choiceclose", "choice"),
84            array('optional' => true));
85
86        $mform->addElement('advcheckbox', 'showpreview', get_string('showpreview', 'choice'));
87        $mform->addHelpButton('showpreview', 'showpreview', 'choice');
88        $mform->disabledIf('showpreview', 'timeopen[enabled]');
89
90//-------------------------------------------------------------------------------
91        $mform->addElement('header', 'resultshdr', get_string('results', 'choice'));
92
93        $mform->addElement('select', 'showresults', get_string("publish", "choice"), $CHOICE_SHOWRESULTS);
94
95        $mform->addElement('select', 'publish', get_string("privacy", "choice"), $CHOICE_PUBLISH);
96        $mform->hideIf('publish', 'showresults', 'eq', 0);
97
98        $mform->addElement('selectyesno', 'showunanswered', get_string("showunanswered", "choice"));
99
100        $mform->addElement('selectyesno', 'includeinactive', get_string('includeinactive', 'choice'));
101        $mform->setDefault('includeinactive', 0);
102
103//-------------------------------------------------------------------------------
104        $this->standard_coursemodule_elements();
105//-------------------------------------------------------------------------------
106        $this->add_action_buttons();
107    }
108
109    function data_preprocessing(&$default_values){
110        global $DB;
111        if (!empty($this->_instance) && ($options = $DB->get_records_menu('choice_options',array('choiceid'=>$this->_instance), 'id', 'id,text'))
112               && ($options2 = $DB->get_records_menu('choice_options', array('choiceid'=>$this->_instance), 'id', 'id,maxanswers')) ) {
113            $choiceids=array_keys($options);
114            $options=array_values($options);
115            $options2=array_values($options2);
116
117            foreach (array_keys($options) as $key){
118                $default_values['option['.$key.']'] = $options[$key];
119                $default_values['limit['.$key.']'] = $options2[$key];
120                $default_values['optionid['.$key.']'] = $choiceids[$key];
121            }
122
123        }
124
125    }
126
127    /**
128     * Allows module to modify the data returned by form get_data().
129     * This method is also called in the bulk activity completion form.
130     *
131     * Only available on moodleform_mod.
132     *
133     * @param stdClass $data the form data to be modified.
134     */
135    public function data_postprocessing($data) {
136        parent::data_postprocessing($data);
137        // Set up completion section even if checkbox is not ticked
138        if (!empty($data->completionunlocked)) {
139            if (empty($data->completionsubmit)) {
140                $data->completionsubmit = 0;
141            }
142        }
143    }
144
145    /**
146     * Enforce validation rules here
147     *
148     * @param array $data array of ("fieldname"=>value) of submitted data
149     * @param array $files array of uploaded files "element_name"=>tmp_file_path
150     * @return array
151     **/
152    public function validation($data, $files) {
153        $errors = parent::validation($data, $files);
154
155        // Check open and close times are consistent.
156        if ($data['timeopen'] && $data['timeclose'] &&
157                $data['timeclose'] < $data['timeopen']) {
158            $errors['timeclose'] = get_string('closebeforeopen', 'choice');
159        }
160
161        return $errors;
162    }
163
164    function add_completion_rules() {
165        $mform =& $this->_form;
166
167        $mform->addElement('checkbox', 'completionsubmit', '', get_string('completionsubmit', 'choice'));
168        // Enable this completion rule by default.
169        $mform->setDefault('completionsubmit', 1);
170        return array('completionsubmit');
171    }
172
173    function completion_rule_enabled($data) {
174        return !empty($data['completionsubmit']);
175    }
176}
177
178