checkreceiver.js

// 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 helper function for URKUND plugin
 *
 * @package   plagiarism-urkund
 * @copyright 2014 Dan Marsden <Dan@danmarsden.com>
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

M.plagiarism_urkund = {};

M.plagiarism_urkund.init = function(Y, contextid) {

    var checkUrkundReceiver = function(Y, receiver, contextid) {
        var rval = receiver.get('value');
        var parentdiv = receiver.ancestor('div');
        var url = M.cfg.wwwroot + '/plagiarism/urkund/checkreceiver.php';
        var valid = '<span id="receivervalid" class="pathok">&#x2714;</span>';
        var invalid = '<span id="receivervalid" class="patherror">&#x2718;</span>';
        var config = {
            method: 'get',
            context: this,
            sync: false,
            data: {
                'sesskey': M.cfg.sesskey,
                'ur': rval,
                'c': contextid
            },
            on: {
                success: function(tid, response) {
                    var jsondata = Y.JSON.parse(response.responseText);
                    var existing = Y.one('#receivervalid');

                    if (String(jsondata) === 'true') {
                        if (existing) {
                            existing.replace(valid);
                        } else {
                            receiver.insert(valid, 'after');

                        }
                        // Remove error from form.
                        parentdiv.removeClass('error');
                        // Remove error span.
                        var existingerror = parentdiv.one('.error');
                        if (existingerror) {
                            existingerror.remove();
                        }
                    } else {
                        if (existing) {
                            existing.replace(invalid);
                        } else {
                            receiver.insert(invalid, 'after');
                        }
                    }
                },
                failure: function() {
                    receiver.insert(invalid, 'after');
                }
            }
        };
        Y.io(url, config);
    };

    var loadReceiver = function(Y, contextid) {
        var invalid = '<span id="receivervalid" class="patherror">&#x2718;</span>';
        var url = M.cfg.wwwroot + '/plagiarism/urkund/loadreceiver.php';
        var config = {
            method: 'get',
            context: this,
            sync: false,
            data: {
                'sesskey': M.cfg.sesskey,
                'c': contextid
            },
            on: {
                success: function(tid, response) {
                    var jsondata = Y.JSON.parse(response.responseText);
                    var form = Y.one('#id_urkund_receiver');
                    if (typeof jsondata.error != 'undefined') {
                        var ertxt = '<div class="form-control-feedback invalid-feedback" id="id_error_urkund_receiver"' +
                            'style="display: block;">' + jsondata.msg + '</div>';
                        form.insert(ertxt, 'after');
                        form.insert(invalid, 'after');
                    } else {
                        form.set('value', jsondata.receiver);
                        form.simulate("change");
                    }
                },
                failure: function() {
                    var form = Y.one('#id_urkund_receiver');
                    form.insert(invalid, 'after');
                }
            }
        };
        Y.io(url, config);
    };

    var receiver = Y.one('#id_urkund_receiver');
    if (null === receiver) {
        // There is nothing to check.
        // for cases where receiver setting is advanced and
        // hidden to users via capabilities.
        return;
    }
    if (receiver.get('value') == "") {
        loadReceiver(Y, contextid);
    } else {
        // Validate existing content.
        checkUrkundReceiver(Y, receiver, contextid);
    }
    // Validate on change.
    /* jshint unused: vars */
    receiver.on('change', function() {
        checkUrkundReceiver(Y, receiver, contextid);
    });
};