1<?php
2// This file is part of Moodle - http://moodle.org/
3//
4// Moodle is free software: you can redistribute it and/or modify
5// it under the terms of the GNU General Public License as published by
6// the Free Software Foundation, either version 3 of the License, or
7// (at your option) any later version.
8//
9// Moodle is distributed in the hope that it will be useful,
10// but WITHOUT ANY WARRANTY; without even the implied warranty of
11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12// GNU General Public License for more details.
13//
14// You should have received a copy of the GNU General Public License
15// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
16
17defined('MOODLE_INTERNAL') OR die('not allowed');
18require_once($CFG->dirroot.'/mod/feedback/item/feedback_item_class.php');
19require_once($CFG->libdir.'/formslib.php');
20
21class feedback_item_label extends feedback_item_base {
22    protected $type = "label";
23    private $presentationoptions = null;
24    private $context;
25
26    /**
27     * Constructor
28     */
29    public function __construct() {
30        $this->presentationoptions = array('maxfiles' => EDITOR_UNLIMITED_FILES,
31                                           'trusttext'=>true);
32
33    }
34
35    public function build_editform($item, $feedback, $cm) {
36        global $DB, $CFG;
37        require_once('label_form.php');
38
39        //get the lastposition number of the feedback_items
40        $position = $item->position;
41        $lastposition = $DB->count_records('feedback_item', array('feedback'=>$feedback->id));
42        if ($position == -1) {
43            $i_formselect_last = $lastposition + 1;
44            $i_formselect_value = $lastposition + 1;
45            $item->position = $lastposition + 1;
46        } else {
47            $i_formselect_last = $lastposition;
48            $i_formselect_value = $item->position;
49        }
50        //the elements for position dropdownlist
51        $positionlist = array_slice(range(0, $i_formselect_last), 1, $i_formselect_last, true);
52
53        //all items for dependitem
54        $feedbackitems = feedback_get_depend_candidates_for_item($feedback, $item);
55        $commonparams = array('cmid'=>$cm->id,
56                             'id'=>isset($item->id) ? $item->id : null,
57                             'typ'=>$item->typ,
58                             'items'=>$feedbackitems,
59                             'feedback'=>$feedback->id);
60
61        $this->context = context_module::instance($cm->id);
62
63        //preparing the editor for new file-api
64        $item->presentationformat = FORMAT_HTML;
65        $item->presentationtrust = 1;
66
67        // Append editor context to presentation options, giving preference to existing context.
68        $this->presentationoptions = array_merge(array('context' => $this->context),
69                                                 $this->presentationoptions);
70
71        $item = file_prepare_standard_editor($item,
72                                            'presentation', //name of the form element
73                                            $this->presentationoptions,
74                                            $this->context,
75                                            'mod_feedback',
76                                            'item', //the filearea
77                                            $item->id);
78
79        //build the form
80        $customdata = array('item' => $item,
81                            'common' => $commonparams,
82                            'positionlist' => $positionlist,
83                            'position' => $position,
84                            'presentationoptions' => $this->presentationoptions);
85
86        $this->item_form = new feedback_label_form('edit_item.php', $customdata);
87    }
88
89    public function save_item() {
90        global $DB;
91
92        if (!$this->get_data()) {
93            return false;
94        }
95        $item = $this->item;
96
97        if (isset($item->clone_item) AND $item->clone_item) {
98            $item->id = ''; //to clone this item
99            $item->position++;
100        }
101
102        $item->presentation = '';
103
104        $item->hasvalue = $this->get_hasvalue();
105        if (!$item->id) {
106            $item->id = $DB->insert_record('feedback_item', $item);
107        } else {
108            $DB->update_record('feedback_item', $item);
109        }
110
111        $item = file_postupdate_standard_editor($item,
112                                                'presentation',
113                                                $this->presentationoptions,
114                                                $this->context,
115                                                'mod_feedback',
116                                                'item',
117                                                $item->id);
118
119        $DB->update_record('feedback_item', $item);
120
121        return $DB->get_record('feedback_item', array('id'=>$item->id));
122    }
123
124    /**
125     * prepares the item for output or export to file
126     * @param stdClass $item
127     * @return string
128     */
129    private function print_item($item) {
130        global $DB, $CFG;
131
132        require_once($CFG->libdir . '/filelib.php');
133
134        //is the item a template?
135        if (!$item->feedback AND $item->template) {
136            $template = $DB->get_record('feedback_template', array('id'=>$item->template));
137            if ($template->ispublic) {
138                $context = context_system::instance();
139            } else {
140                $context = context_course::instance($template->course);
141            }
142            $filearea = 'template';
143        } else {
144            $cm = get_coursemodule_from_instance('feedback', $item->feedback);
145            $context = context_module::instance($cm->id);
146            $filearea = 'item';
147        }
148
149        $item->presentationformat = FORMAT_HTML;
150        $item->presentationtrust = 1;
151
152        $output = file_rewrite_pluginfile_urls($item->presentation,
153                                               'pluginfile.php',
154                                               $context->id,
155                                               'mod_feedback',
156                                               $filearea,
157                                               $item->id);
158
159        $formatoptions = array('overflowdiv'=>true, 'trusted'=>$CFG->enabletrusttext);
160        echo format_text($output, FORMAT_HTML, $formatoptions);
161    }
162
163    /**
164     * @param stdClass $item
165     * @param bool|true $withpostfix
166     * @return string
167     */
168    public function get_display_name($item, $withpostfix = true) {
169        return '';
170    }
171
172    /**
173     * Adds an input element to the complete form
174     *
175     * @param stdClass $item
176     * @param mod_feedback_complete_form $form
177     */
178    public function complete_form_element($item, $form) {
179        global $DB;
180        if (!$item->feedback AND $item->template) {
181            // This is a template.
182            $template = $DB->get_record('feedback_template', array('id' => $item->template));
183            if ($template->ispublic) {
184                $context = context_system::instance();
185            } else {
186                $context = context_course::instance($template->course);
187            }
188            $filearea = 'template';
189        } else {
190            // This is a question in the current feedback.
191            $context = $form->get_cm()->context;
192            $filearea = 'item';
193        }
194        $output = file_rewrite_pluginfile_urls($item->presentation, 'pluginfile.php',
195                $context->id, 'mod_feedback', $filearea, $item->id);
196        $formatoptions = array('overflowdiv' => true, 'noclean' => true);
197        $output = format_text($output, FORMAT_HTML, $formatoptions);
198        $output = html_writer::div($output, '', ['id' => 'feedback_item_' . $item->id]);
199
200        $inputname = $item->typ . '_' . $item->id;
201
202        $name = $this->get_display_name($item);
203        $form->add_form_element($item, ['static', $inputname, $name, $output], false, false);
204    }
205
206    public function compare_value($item, $dbvalue, $dependvalue) {
207        return false;
208    }
209
210    public function postupdate($item) {
211        global $DB;
212
213        $context = context_module::instance($item->cmid);
214        $item = file_postupdate_standard_editor($item,
215                                                'presentation',
216                                                $this->presentationoptions,
217                                                $context,
218                                                'mod_feedback',
219                                                'item',
220                                                $item->id);
221
222        $DB->update_record('feedback_item', $item);
223        return $item->id;
224    }
225
226    public function get_hasvalue() {
227        return 0;
228    }
229
230    public function can_switch_require() {
231        return false;
232    }
233
234    public function excelprint_item(&$worksheet,
235                             $row_offset,
236                             $xls_formats,
237                             $item,
238                             $groupid,
239                             $courseid = false) {
240    }
241
242    public function print_analysed($item, $itemnr = '', $groupid = false, $courseid = false) {
243    }
244    public function get_printval($item, $value) {
245    }
246
247    /**
248     * Return the analysis data ready for external functions.
249     *
250     * @param stdClass $item     the item (question) information
251     * @param int      $groupid  the group id to filter data (optional)
252     * @param int      $courseid the course id (optional)
253     * @return array an array of data with non scalar types json encoded
254     * @since  Moodle 3.3
255     */
256    public function get_analysed_for_external($item, $groupid = false, $courseid = false) {
257        return [];
258    }
259}
260