Merge branch 'MDL-70584-310' of git://github.com/marinaglancy/moodle into MOODLE_310_...
[moodle.git] / question / flags.js
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1// This file is part of Moodle - http://moodle.org/
2//
3// Moodle is free software: you can redistribute it and/or modify
4// it under the terms of the GNU General Public License as published by
5// the Free Software Foundation, either version 3 of the License, or
6// (at your option) any later version.
7//
8// Moodle is distributed in the hope that it will be useful,
9// but WITHOUT ANY WARRANTY; without even the implied warranty of
10// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11// GNU General Public License for more details.
12//
13// You should have received a copy of the GNU General Public License
14// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
15
16/**
17 * JavaScript library for dealing with the question flags.
18 *
19 * This script, and the YUI libraries that it needs, are inluded by
20 * the $PAGE->requires->js calls in question_get_html_head_contributions in lib/questionlib.php.
21 *
22 * @package moodlecore
23 * @subpackage questionengine
24 * @copyright 2010 The Open University
25 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
26 */
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27
28M.core_question_flags = {
29 flagattributes: null,
30 actionurl: null,
22c97c64 31 flagtext: null,
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32 listeners: [],
33
22c97c64 34 init: function(Y, actionurl, flagattributes, flagtext) {
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35 M.core_question_flags.flagattributes = flagattributes;
36 M.core_question_flags.actionurl = actionurl;
22c97c64 37 M.core_question_flags.flagtext = flagtext;
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38
39 Y.all('div.questionflag').each(function(flagdiv, i) {
404da238 40 var checkbox = flagdiv.one('input[type=checkbox]');
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41 if (!checkbox) {
42 return;
43 }
44
22c97c64 45 var input = Y.Node.create('<input type="hidden" class="questionflagvalue" />');
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46 input.set('id', checkbox.get('id'));
47 input.set('name', checkbox.get('name'));
48 input.set('value', checkbox.get('checked') ? 1 : 0);
49
50 // Create an image input to replace the img tag.
51 var image = Y.Node.create('<input type="image" class="questionflagimage" />');
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52 var flagtext = Y.Node.create('<span class="questionflagtext">.</span>');
53 M.core_question_flags.update_flag(input, image, flagtext);
474ee938 54
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55 checkbox.remove();
56 flagdiv.one('label').remove();
57 flagdiv.append(input);
58 flagdiv.append(image);
474ee938 59 flagdiv.append(flagtext);
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60 });
61
62 Y.delegate('click', function(e) {
22c97c64 63 var input = this.one('input.questionflagvalue');
ff065f96 64 input.set('value', 1 - input.get('value'));
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65 M.core_question_flags.update_flag(input, this.one('input.questionflagimage'),
66 this.one('span.questionflagtext'));
67 var postdata = this.one('input.questionflagpostdata').get('value') +
2be77520 68 input.get('value');
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69
70 e.halt();
71 Y.io(M.core_question_flags.actionurl , {method: 'POST', 'data': postdata});
72 M.core_question_flags.fire_listeners(postdata);
22c97c64 73 }, document.body, 'div.questionflag');
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74 },
75
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76 update_flag: function(input, image, flagtext) {
77 var value = input.get('value');
78 image.setAttrs(M.core_question_flags.flagattributes[value]);
79 flagtext.replaceChild(flagtext.create(M.core_question_flags.flagtext[value]),
80 flagtext.get('firstChild'));
81 flagtext.set('title', M.core_question_flags.flagattributes[value].title);
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82 },
83
84 add_listener: function(listener) {
85 M.core_question_flags.listeners.push(listener);
86 },
87
88 fire_listeners: function(postdata) {
89 for (var i = 0; i < M.core_question_flags.listeners.length; i++) {
90 M.core_question_flags.listeners[i](
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91 postdata.match(/\bqubaid=(\d+)\b/)[1],
92 postdata.match(/\bslot=(\d+)\b/)[1],
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93 postdata.match(/\bnewstate=(\d+)\b/)[1]
94 );
95 }
96 }
97};