use getFullscreenElement to check fullscreen

1 files changed, 2 insertions, 11 deletions

diff --git a/ext/fg/js/popup.js b/ext/fg/js/popup.js
index 99610e17..ae158263 100644
--- a/ext/fg/js/popup.js
+++ b/ext/fg/js/popup.js
@@ -16,6 +16,7 @@
  */
 
 /* global
+ * DOM
  * apiGetMessageToken
  * apiInjectStylesheet
  */
@@ -271,7 +272,7 @@ class Popup {
     }
 
     _onFullscreenChanged() {
-        const parent = (Popup._getFullscreenElement() || document.body || null);
+        const parent = (DOM.getFullscreenElement() || document.body || null);
         if (parent !== null && this._container.parentNode !== parent) {
             parent.appendChild(this._container);
         }
@@ -365,16 +366,6 @@ class Popup {
         contentWindow.postMessage({action, params, token}, this._targetOrigin);
     }
 
-    static _getFullscreenElement() {
-        return (
-            document.fullscreenElement ||
-            document.msFullscreenElement ||
-            document.mozFullScreenElement ||
-            document.webkitFullscreenElement ||
-            null
-        );
-    }
-
     static _getPositionForHorizontalText(elementRect, width, height, viewport, offsetScale, optionsGeneral) {
         const preferBelow = (optionsGeneral.popupHorizontalTextPosition === 'below');
         const horizontalOffset = optionsGeneral.popupHorizontalOffset * offsetScale;