Fix lint

qutebrowser/browser/webengine/webenginetab.py

@@ -30,7 +30,7 @@ from PyQt5.QtCore import (pyqtSignal, pyqtSlot, Qt, QEvent, QPoint, QPointF,
                           QUrl, QTimer)
 from PyQt5.QtGui import QKeyEvent, QIcon
 from PyQt5.QtNetwork import QAuthenticator
-from PyQt5.QtWidgets import QApplication, QWidget
+from PyQt5.QtWidgets import QApplication
 from PyQt5.QtWebEngineWidgets import QWebEnginePage, QWebEngineScript
 
 from qutebrowser.config import configdata, config

qutebrowser/browser/webengine/webview.py

@@ -58,7 +58,12 @@ class WebEngineView(QWebEngineView):
         self._layout = miscwidgets.PseudoLayout(self)
 
     def render_widget(self):
-        """Get the RenderWidgetHostViewQt for this view."""
+        """Get the RenderWidgetHostViewQt for this view.
+
+        Normally, this would always be the focusProxy().
+        However, it sometimes isn't, so we use this as a WORKAROUND for
+        https://bugreports.qt.io/browse/QTBUG-68727
+        """
         proxy = self.focusProxy()
         if proxy is not None:
             return proxy

qutebrowser/misc/miscwidgets.py

@@ -268,6 +268,15 @@ class WrapperLayout(QLayout):
 
 class PseudoLayout(QLayout):
 
+    """A layout which isn't actually a real layout.
+
+    This is used to replace QWebEngineView's internal layout, as a WORKAROUND
+    for https://bugreports.qt.io/browse/QTBUG-68224 and other related issues.
+
+    This is partly inspired by https://codereview.qt-project.org/#/c/230894/
+    which does something similar as part of Qt.
+    """
+
     def addItem(self, item):
         assert self.parent() is not None
         item.widget().setParent(self.parent())
@@ -285,11 +294,13 @@ class PseudoLayout(QLayout):
         return self.parent().render_widget()
 
     def setGeometry(self, rect):
+        """Resize the render widget when the view is resized."""
         widget = self.widget()
         if widget is not None:
             widget.setGeometry(rect)
 
     def sizeHint(self):
+        """Make sure the view has the sizeHint of the render widget."""
         widget = self.widget()
         if widget is not None:
             return widget.sizeHint()