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📄 expandconversation.js(4.25 KB)
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📄 grader.js(7.58 KB)

Editing: expandconversation.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/>.

/**
 * This module handles the creation of a Modal that shows the user's post in context of the entire discussion.
 *
 * @module     mod_forum/grades/expandconversation
 * @copyright  2019 Mathew May <mathew.solutions>
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
import * as ForumSelectors from './grader/selectors';
import Repository from 'mod_forum/repository';
import {exception as showException} from "core/notification";
import Templates from 'core/templates';
import * as Modal from 'core/modal_factory';
import * as ModalEvents from 'core/modal_events';

/**
 * Find the Node containing the gradable details from the provided node by searching up the tree.
 *
 * @param {HTMLElement} node
 * @returns {HTMLElement}
 */
const findGradableNode = node => node.closest(ForumSelectors.expandConversation);

/**
 * Show the post in context in a modal.
 *
 * @param {HTMLElement} rootNode The button that has been clicked
 * @param {object} param
 * @param {bool} [param.focusOnClose=null]
 */
const showPostInContext = async(rootNode, {
    focusOnClose = null,
} = {}) => {
    const postId = rootNode.dataset.postid;
    const discussionId = rootNode.dataset.discussionid;
    const discussionName = rootNode.dataset.name;
    const experimentalDisplayMode = rootNode.dataset.experimentalDisplayMode == "1";

const [
        allPosts,
        modal,
    ] = await Promise.all([
        Repository.getDiscussionPosts(parseInt(discussionId)),
        Modal.create({
            title: discussionName,
            large: true,
            type: Modal.types.CANCEL
        }),
    ]);

const postsById = new Map(allPosts.posts.map(post => {
        post.readonly = true;
        post.hasreplies = false;
        post.replies = [];
        return [post.id, post];
    }));

// Handle hidden event.
    modal.getRoot().on(ModalEvents.hidden, function() {
        // Destroy when hidden.
        modal.destroy();
        try {
            focusOnClose.focus();
        } catch (e) {
            // eslint-disable-line
        }
    });

modal.getRoot().on(ModalEvents.bodyRendered, () => {
        const relevantPost = modal.getRoot()[0].querySelector(`#p${postId}`);
        if (relevantPost) {
            relevantPost.scrollIntoView({behavior: "smooth"});
        }
    });

modal.show();

// Note: We do not use await here because it messes with the Modal transitions.
    const templatePromise = Templates.render('mod_forum/grades/grader/discussion/post_modal', {
        posts,
        experimentaldisplaymode: experimentalDisplayMode
    });
    modal.setBody(templatePromise);
};

/**
 * Register event listeners for the expand conversations button.
 *
 * @param {HTMLElement} rootNode The root to listen to.
 */
export const registerEventListeners = (rootNode) => {
    rootNode.addEventListener('click', (e) => {
        const rootNode = findGradableNode(e.target);

if (rootNode) {
            e.preventDefault();

try {
                showPostInContext(rootNode, {
                    focusOnClose: e.target,
                });
            } catch (err) {
                showException(err);
            }
        }
    });
};

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