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import {$, $$, elementExists} from 'select-dom';
import * as pageDetect from 'github-url-detection';
import features from '../feature-manager.js';
import {isEditable} from '../helpers/dom-utils.js';
const isCommentGroupMinimized = (comment: HTMLElement): boolean =>
elementExists('.minimized-comment:not(.d-none)', comment)
|| Boolean(comment.closest([
'.js-resolvable-thread-contents.d-none', // Regular comments
'details.js-resolvable-timeline-thread-container:not([open])', // Review comments
]));
function runShortcuts(event: KeyboardEvent): void {
if ((event.key !== 'j' && event.key !== 'k') || isEditable(event.target)) {
return;
}
event.preventDefault();
const focusedComment = $(':target')!;
const items
= $$([
'.js-targetable-element[id^="diff-"]', // Files in diffs
'.js-minimizable-comment-group', // Comments (to be `.filter()`ed)
])
.filter(element =>
element.classList.contains('js-minimizable-comment-group')
? !isCommentGroupMinimized(element)
: true,
);
// `j` goes to the next comment, `k` goes back a comment
const direction = event.key === 'j' ? 1 : -1;
const currentIndex = items.indexOf(focusedComment);
// Start at 0 if nothing is; clamp index
const chosenCommentIndex = Math.min(
Math.max(0, currentIndex + direction),
items.length - 1,
);
if (currentIndex !== chosenCommentIndex) {
// Focus comment without pushing to history
location.replace('#' + items[chosenCommentIndex].id);
}
}
function init(signal: AbortSignal): void {
document.body.addEventListener('keypress', runShortcuts, {signal});
}
void features.add(import.meta.url, {
shortcuts: {
j: 'Focus the comment/file below',
k: 'Focus the comment/file above',
},
include: [
pageDetect.hasComments,
],
init,
});
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