Improve document focus control (#1167)

* Improve styles for #content-scroll-focus

* Create new class to manage and control document focus

* Use new focus class

* Add a check to prevent redundant .blur calls

1 files changed, 6 insertions, 1 deletions

diff --git a/ext/bg/js/generic-page-main.js b/ext/bg/js/generic-page-main.js
index 8e1b3c76..29fcf63d 100644
--- a/ext/bg/js/generic-page-main.js
+++ b/ext/bg/js/generic-page-main.js
@@ -15,13 +15,18 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
+/* global
+ * DocumentFocusController
+ */
+
 function setupEnvironmentInfo() {
     const {manifest_version: manifestVersion} = chrome.runtime.getManifest();
     document.documentElement.dataset.manifestVersion = `${manifestVersion}`;
 }
 
 (() => {
-    document.querySelector('#content-scroll-focus').focus();
+    const documentFocusController = new DocumentFocusController();
+    documentFocusController.prepare();
     document.documentElement.dataset.loaded = 'true';
     setupEnvironmentInfo();
 })();