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Imrove scroll behavior to hash issuecomment(scroll position, auto expand if file is folded, and on refreshing) #23513

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Mar 17, 2023
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22 changes: 21 additions & 1 deletion web_src/js/features/repo-issue.js
Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@ import {initEasyMDEImagePaste} from './comp/ImagePaste.js';
import {initCompMarkupContentPreviewTab} from './comp/MarkupContentPreview.js';
import {initTooltip, showTemporaryTooltip} from '../modules/tippy.js';
import {hideElem, showElem, toggleElem} from '../utils/dom.js';
import {setFileFolding} from './file-fold.js';

const {appSubUrl, csrfToken} = window.config;

Expand Down Expand Up @@ -437,17 +438,36 @@ export async function handleReply($el) {

export function initRepoPullRequestReview() {
if (window.location.hash && window.location.hash.startsWith('#issuecomment-')) {
// set scrollRestoration to 'manual' when there is a hash in url, so that the scroll position will not be remembered after refreshing
if (window.history.scrollRestoration !== 'manual') {
window.history.scrollRestoration = 'manual';
}
const commentDiv = $(window.location.hash);
if (commentDiv) {
// get the name of the parent id
const groupID = commentDiv.closest('div[id^="code-comments-"]').attr('id');
if (groupID && groupID.startsWith('code-comments-')) {
const id = groupID.slice(14);
const ancestorDiffBox = commentDiv.closest('.diff-file-box');
// on pages like conversation, there is no diff header
const diffHeader = ancestorDiffBox.find('.diff-file-header');
// offset is for scrolling
let offset = 30;
if (diffHeader[0]) {
offset += $('.diff-detail-box').outerHeight() + diffHeader.outerHeight();
}
$(`#show-outdated-${id}`).addClass('gt-hidden');
$(`#code-comments-${id}`).removeClass('gt-hidden');
$(`#code-preview-${id}`).removeClass('gt-hidden');
$(`#hide-outdated-${id}`).removeClass('gt-hidden');
commentDiv[0].scrollIntoView();
// if the comment box is folded, expand it
if (ancestorDiffBox.attr('data-folded') && ancestorDiffBox.attr('data-folded') === 'true') {
setFileFolding(ancestorDiffBox[0], ancestorDiffBox.find('.fold-file')[0], false);
}
window.scrollTo({
top: commentDiv.offset().top - offset,
behavior: 'instant'
});
}
}
}
Expand Down