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import React from 'dom-chef';
import select from 'select-dom';
import DiffIcon from 'octicon/diff.svg';
import BookIcon from 'octicon/book.svg';
import CheckIcon from 'octicon/check.svg';
import * as pageDetect from 'github-url-detection';
import features from '.';
function createDiffStyleToggle(): DocumentFragment {
const parameters = new URLSearchParams(location.search);
const isUnified = select.exists([
'[value="unified"][checked]', // Form in PR
'.table-of-contents .selected[href$=unified]' // Link in single commit
]);
function makeLink(type: string, icon: Element, selected: boolean): HTMLElement {
parameters.set('diff', type);
return (
<a
className={`btn btn-sm BtnGroup-item tooltipped tooltipped-s ${selected ? 'selected' : ''}`}
aria-label={`Show ${type} diffs`}
href={`?${String(parameters)}`}
>
{icon}
</a>
);
}
return (
<>
{makeLink('unified', <DiffIcon/>, isUnified)}
{makeLink('split', <BookIcon/>, !isUnified)}
</>
);
}
function createWhitespaceButton(): HTMLElement {
const searchParameters = new URLSearchParams(location.search);
const isHidingWhitespace = searchParameters.get('w') === '1';
if (isHidingWhitespace) {
searchParameters.delete('w');
} else {
searchParameters.set('w', '1');
}
return (
<a
href={`?${String(searchParameters)}`}
data-hotkey="d w"
className={`btn btn-sm btn-outline tooltipped tooltipped-s ${isHidingWhitespace ? 'bg-gray-light text-gray-light' : ''}`}
aria-label={`${isHidingWhitespace ? 'Show' : 'Hide'} whitespace in diffs`}
>
{isHidingWhitespace && <CheckIcon/>} No Whitespace
</a>
);
}
function wrap(...elements: Node[]): DocumentFragment {
if (pageDetect.isSingleCommit()) {
return (
<div className="float-right">
{elements.map(element => <div className="ml-3 BtnGroup">{element}</div>)}
</div>
);
}
// eslint-disable-next-line react/jsx-no-useless-fragment
return <>{elements.map(element => <div className="diffbar-item">{element}</div>)}</>;
}
function init(): false | void {
const container = select([
'#toc', // In single commit view
'.pr-review-tools' // In review view
]);
if (!container) {
return false;
}
container.prepend(
wrap(
createDiffStyleToggle(),
createWhitespaceButton()
)
);
// Trim title
const prTitle = select('.pr-toolbar .js-issue-title');
if (prTitle && select.exists('.pr-toolbar progress-bar')) { // Only review view has progress-bar
prTitle.style.maxWidth = '24em';
prTitle.title = prTitle.textContent!;
}
// Remove previous options UI
const singleCommitUI = select('[data-ga-load^="Diff, view"]');
if (singleCommitUI) {
singleCommitUI.remove();
return;
}
const prUI = select('.js-diff-settings');
if (prUI) {
prUI.closest('details')!.remove();
// Make space for the new button by removing "Changes from" #655
select('[data-hotkey="c"]')!.firstChild!.remove();
}
}
void features.add({
id: __filebasename,
description: 'Adds one-click buttons to change diff style and to ignore the whitespace and a keyboard shortcut to ignore the whitespace: `d` `w`.',
screenshot: 'https://user-images.githubusercontent.com/1402241/54178764-d1c96080-44d1-11e9-889c-734ffd2a602d.png',
shortcuts: {
'd w': 'Show/hide whitespaces in diffs'
}
}, {
include: [
// Disabled because of #2291 // pageDetect.isPRFiles
pageDetect.isCommit
],
init
});
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