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// 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/>.
/**
* JavaScript library for dealing with the question flags.
*
* This script, and the YUI libraries that it needs, are inluded by
* the $PAGE->requires->js calls in question_get_html_head_contributions in lib/questionlib.php.
*
* @package moodlecore
* @subpackage questionengine
* @copyright 2010 The Open University
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
M.core_question_flags = {
flagattributes: null,
actionurl: null,
flagtext: null,
listeners: [],
init: function(Y, actionurl, flagattributes, flagtext) {
M.core_question_flags.flagattributes = flagattributes;
M.core_question_flags.actionurl = actionurl;
M.core_question_flags.flagtext = flagtext;
Y.all('div.questionflag').each(function(flagdiv, i) {
var checkbox = flagdiv.one('input[type=checkbox]');
if (!checkbox) {
return;
}
var input = Y.Node.create('<input type="hidden" class="questionflagvalue" />');
input.set('id', checkbox.get('id'));
input.set('name', checkbox.get('name'));
input.set('value', checkbox.get('checked') ? 1 : 0);
// Create an image input to replace the img tag.
var image = Y.Node.create('<input type="image" class="questionflagimage" />');
var flagtext = Y.Node.create('<span class="questionflagtext">.</span>');
M.core_question_flags.update_flag(input, image, flagtext);
checkbox.remove();
flagdiv.one('label').remove();
flagdiv.append(input);
flagdiv.append(image);
flagdiv.append(flagtext);
});
Y.delegate('click', function(e) {
var input = this.one('input.questionflagvalue');
input.set('value', 1 - input.get('value'));
M.core_question_flags.update_flag(input, this.one('input.questionflagimage'),
this.one('span.questionflagtext'));
var postdata = this.one('input.questionflagpostdata').get('value') +
input.get('value');
e.halt();
Y.io(M.core_question_flags.actionurl , {method: 'POST', 'data': postdata});
M.core_question_flags.fire_listeners(postdata);
}, document.body, 'div.questionflag');
},
update_flag: function(input, image, flagtext) {
var value = input.get('value');
image.setAttrs(M.core_question_flags.flagattributes[value]);
flagtext.replaceChild(flagtext.create(M.core_question_flags.flagtext[value]),
flagtext.get('firstChild'));
flagtext.set('title', M.core_question_flags.flagattributes[value].title);
},
add_listener: function(listener) {
M.core_question_flags.listeners.push(listener);
},
fire_listeners: function(postdata) {
for (var i = 0; i < M.core_question_flags.listeners.length; i++) {
M.core_question_flags.listeners[i](
postdata.match(/\bqubaid=(\d+)\b/)[1],
postdata.match(/\bslot=(\d+)\b/)[1],
postdata.match(/\bnewstate=(\d+)\b/)[1]
);
}
}
};