question/bank/comment/amd/src/comment.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
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//
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// 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/>.

/**
 * Column selector js.
 *
 * @module    qbank_comment/comment
 * @copyright 2021 Catalyst IT Australia Pty Ltd
 * @author    Safat Shahin <safatshahin@catalyst-au.net>
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

import Fragment from 'core/fragment';
import * as Str from 'core/str';
import ModalEvents from 'core/modal_events';
import ModalFactory from 'core/modal_factory';
import Notification from 'core/notification';

/**
 * Event listeners for the module.
 *
 * @method clickEvent
 * @param {Number} questionId
 * @param {Number} courseID
 * @param {Number} contextId
 */
const commentEvent = (questionId, courseID, contextId) => {
    let args = {
        questionid: questionId,
        courseid: courseID
    };
    ModalFactory.create({
        type: ModalFactory.types.SAVE_CANCEL,
        title: Str.get_string('commentheader', 'qbank_comment'),
        body: Fragment.loadFragment('qbank_comment', 'question_comment', contextId, args),
        large: true,
    }).then((modal) => {
        let root = modal.getRoot();

        // Don't display the default add comment link in the modal.
        root.on(ModalEvents.bodyRendered, function() {
            const submitlink = document.querySelectorAll("div.comment-area a")[0];
            submitlink.style.display = 'none';
        });

        // Version selection event.
        root.on('change', '#question_comment_version_dropdown', function(e) {
            args.questionid = e.target.value;
            modal.setBody(Fragment.loadFragment('qbank_comment', 'question_comment', contextId, args));
        });

        // Get the required strings and updated the modal button text labels.
        Str.get_strings([
            {key: 'addcomment', component: 'qbank_comment'},
            {key: 'close', component: 'qbank_comment'},
        ]).then((strings) => {
            modal.setButtonText('save', strings[0]);
            modal.setButtonText('cancel', strings[1]);
            return;
        }).fail(Notification.exception);

        root.on(ModalEvents.cancel, function() {
            location.reload();
            modal.hide();
        });

        // Handle adding the comment when the button in the modal is clicked.
        root.on(ModalEvents.save, function(e) {
            e.preventDefault();
            const submitlink = document.querySelectorAll("div.comment-area a")[0];
            const textarea = document.querySelectorAll("div.comment-area textarea")[0];

            // Check there is a valid comment to add, and trigger adding if there is.
            if (textarea.value != textarea.getAttribute('aria-label') && textarea.value != '') {
                submitlink.click();
            }

        });
        root.on('click', 'button[data-action="hide"]', () => {
            location.reload();
            modal.hide();
        });
        modal.show();
        return modal;
    }).fail(Notification.exception);
};

/**
 * Entrypoint of the js.
 *
 * @method init
 * @param {string} questionSelector the question comment identifier.
 */
export const init = (questionSelector) => {
    const target = document.querySelector(questionSelector);
    target.addEventListener('click', () => {
        // Call for the event listener to listed for clicks in any comment count row.
        commentEvent(target.dataset.questionid, target.dataset.courseid, target.dataset.contextid);
    });
};