Add a focus_elem function to utils.webelem.

qutebrowser/browser/commands.py

@@ -711,8 +711,7 @@ class CommandDispatcher:
         and do everything async.
         """
         frame = self._tabs.currentWidget().page().currentFrame()
-        elem = frame.findFirstElement(webelem.SELECTORS[
-            webelem.Group.focus])
+        elem = webelem.focus_elem(frame)
         if elem.isNull():
             raise CommandError("No element focused!")
         if not webelem.is_editable(elem):

qutebrowser/utils/webelem.py

@@ -247,3 +247,14 @@ def is_editable(elem):
         log.webview.debug("span with classes {} clicked!".format(
             elem.classes()))
     return False
+
+
+def focus_elem(frame):
+    """Get the focused element in a webframe.
+
+    FIXME: Add tests.
+
+    Args:
+        frame: The QWebFrame to search in.
+    """
+    return frame.findFirstElement(SELECTORS[Group.focus])