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import select from 'select-dom';
import delegate from 'delegate-it';
import * as pageDetect from 'github-url-detection';
import features from '.';
let previousFile: HTMLElement | undefined;
function remember(event: delegate.Event<Event, HTMLFormElement>): void {
previousFile = event.delegateTarget.closest<HTMLElement>('.js-file')!;
}
function isChecked(file: HTMLElement): boolean {
// Use the attribute because the `checked` property seems unreliable in the `click` handler
return file.querySelector('.js-reviewed-checkbox')!.hasAttribute('checked');
}
function batchToggle(event: delegate.Event<MouseEvent, HTMLFormElement>): void {
if (!event.shiftKey || !previousFile) {
return;
}
event.preventDefault();
event.stopImmediatePropagation();
const previousFileState = isChecked(previousFile);
const thisFile = event.delegateTarget.closest<HTMLElement>('.js-file')!;
const files = select.all('.js-file');
const selectedFiles = files.slice(
files.indexOf(previousFile) + 1,
files.indexOf(thisFile) + 1
);
for (const file of selectedFiles) {
if (isChecked(file) !== previousFileState) {
select('.js-reviewed-checkbox', file)!.click();
}
}
}
function init(): void {
// `mousedown` required to avoid mouse selection on shift-click
delegate(document, '.js-toggle-user-reviewed-file-form', 'mousedown', batchToggle);
delegate(document, '.js-toggle-user-reviewed-file-form', 'submit', remember);
}
function deinit(): void {
previousFile = undefined;
}
void features.add({
id: __filebasename,
description: 'Mark/unmark multiple files as “Viewed” in the PR Files tab. Click on the first checkbox you want to mark/unmark and then `shift`-click another one; all the files between the two checkboxes will be marked/unmarked as “Viewed”.',
screenshot: 'https://user-images.githubusercontent.com/1402241/79343285-854f2080-7f2e-11ea-8d4c-a9dc163be9be.gif'
}, {
waitForDomReady: false,
include: [
pageDetect.isPRFiles
],
init,
deinit
});
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