Add download folder button (refined-github#951)

readme.md

@@ -127,6 +127,7 @@ GitHub Enterprise is also supported. More info in the options.
 - [Adds a link in a user's profile to their public gists](https://user-images.githubusercontent.com/11544418/34268306-1c974fd2-e678-11e7-9e82-861dfe7add22.png)
 - [Adds a 'Jump to bottom' link to discussion pages](https://user-images.githubusercontent.com/4331946/34298950-93876584-e720-11e7-898a-96f85e31aefe.png)
 - [Adds a 'Your repositories' link to user profile dropdown](https://user-images.githubusercontent.com/4201088/34920280-479e2454-f996-11e7-8e24-ad69793b9d9b.png)
+- [Adds a 'Download folder' button to repos](https://user-images.githubusercontent.com/1402241/35044451-fd3e2326-fbc2-11e7-82e1-61ec7bee612b.png)
 
 ### More info at a glance
 

source/content.js

@@ -58,6 +58,7 @@ import extendDiffExpander from './features/extend-diff-expander';
 import sortIssuesByUpdateTime from './features/sort-issues-by-update-time';
 import makeDiscussionSidebarSticky from './features/make-discussion-sidebar-sticky';
 import shortenLinks from './features/shorten-links';
+import addDownloadFolderButton from './features/add-download-folder-button';
 import hideUselessNewsfeedEvents from './features/hide-useless-newsfeed-events';
 
 import * as pageDetect from './libs/page-detect';
@@ -145,6 +146,7 @@ function ajaxedPagesHandler() {
 	enableFeature(sortIssuesByUpdateTime);
 	enableFeature(shortenLinks);
 	enableFeature(linkifyCode);
+	enableFeature(addDownloadFolderButton);
 
 	if (pageDetect.isIssueSearch() || pageDetect.isPRSearch()) {
 		enableFeature(addYoursMenuItem);

source/features/add-download-folder-button.js

@@ -0,0 +1,17 @@
+import {h} from 'dom-chef';
+import select from 'select-dom';
+import * as pageDetect from '../libs/page-detect';
+
+export default () => {
+	if (pageDetect.isRepoTree()) {
+		const buttonGroup = select(`.file-navigation .BtnGroup.float-right`);
+		if (buttonGroup) {
+			buttonGroup.prepend(
+				<a
+					class="btn btn-sm BtnGroup-item"
+					href={`https://download-directory.github.io/?url=${location.href}`}>
+					Download
+				</a>);
+		}
+	}
+};