Set websettings on each profile's setting object

Turns out QWebEngineSettings.globalSettings() only sets things on the default
profile. We now get everything from the default profile settings, but set it on
both the default and the private profile.

Fixes #2638

(cherry picked from commit b11a4388cd10b6ff2fd917fca689ebdc50d581ae)

qutebrowser/browser/webengine/webenginesettings.py

@@ -44,33 +44,26 @@ default_profile = None
 private_profile = None
 
 
-class Attribute(websettings.Attribute):
+class Base(websettings.Base):
+
+    """Base settings class with appropriate _get_global_settings."""
+
+    def _get_global_settings(self):
+        return [default_profile.settings(), private_profile.settings()]
+
+
+class Attribute(Base, websettings.Attribute):
 
     """A setting set via QWebEngineSettings::setAttribute."""
 
-    GLOBAL_SETTINGS = QWebEngineSettings.globalSettings
     ENUM_BASE = QWebEngineSettings
 
 
-class Setter(websettings.Setter):
+class Setter(Base, websettings.Setter):
 
     """A setting set via QWebEngineSettings getter/setter methods."""
 
-    GLOBAL_SETTINGS = QWebEngineSettings.globalSettings
-
-
-class NullStringSetter(websettings.NullStringSetter):
-
-    """A setter for settings requiring a null QString as default."""
-
-    GLOBAL_SETTINGS = QWebEngineSettings.globalSettings
-
-
-class StaticSetter(websettings.StaticSetter):
-
-    """A setting set via static QWebEngineSettings getter/setter methods."""
-
-    GLOBAL_SETTINGS = QWebEngineSettings.globalSettings
+    pass
 
 
 class DefaultProfileSetter(websettings.Base):
@@ -204,11 +197,11 @@ def init(args):
             log.misc.debug("Imported PyOpenGL as workaround")
 
     _init_profiles()
+
     # We need to do this here as a WORKAROUND for
     # https://bugreports.qt.io/browse/QTBUG-58650
     if not qtutils.version_check('5.9'):
         PersistentCookiePolicy().set(config.get('content', 'cookies-store'))
-
     Attribute(QWebEngineSettings.FullScreenSupportEnabled).set(True)
 
     websettings.init_mappings(MAPPINGS)

qutebrowser/browser/webkit/webkitsettings.py

@@ -33,33 +33,40 @@ from qutebrowser.utils import standarddir, objreg, urlutils, qtutils
 from qutebrowser.browser import shared
 
 
-class Attribute(websettings.Attribute):
+class Base(websettings.Base):
+
+    """Base settings class with appropriate _get_global_settings."""
+
+    def _get_global_settings(self):
+        return [QWebSettings.globalSettings()]
+
+
+class Attribute(Base, websettings.Attribute):
 
     """A setting set via QWebSettings::setAttribute."""
 
-    GLOBAL_SETTINGS = QWebSettings.globalSettings
     ENUM_BASE = QWebSettings
 
 
-class Setter(websettings.Setter):
+class Setter(Base, websettings.Setter):
 
     """A setting set via QWebSettings getter/setter methods."""
 
-    GLOBAL_SETTINGS = QWebSettings.globalSettings
+    pass
 
 
-class NullStringSetter(websettings.NullStringSetter):
+class NullStringSetter(Base, websettings.NullStringSetter):
 
     """A setter for settings requiring a null QString as default."""
 
-    GLOBAL_SETTINGS = QWebSettings.globalSettings
+    pass
 
 
-class StaticSetter(websettings.StaticSetter):
+class StaticSetter(Base, websettings.StaticSetter):
 
     """A setting set via static QWebSettings getter/setter methods."""
 
-    GLOBAL_SETTINGS = QWebSettings.globalSettings
+    pass
 
 
 class CookiePolicy(websettings.Base):

qutebrowser/config/websettings.py

@@ -34,24 +34,28 @@ class Base:
         _default: The default value of this setting.
     """
 
-    # Needs to be overridden by subclasses in
-    # webkitsettings.py/webenginesettings.py
-    GLOBAL_SETTINGS = None
-
     def __init__(self):
         self._default = UNSET
 
+    def _get_global_settings(self):
+        """Get a list of global QWeb(Engine)Settings to use."""
+        raise NotImplementedError
+
     def _get_settings(self, settings):
-        """Get the QWeb(Engine)Settings object to use.
+        """Get a list of QWeb(Engine)Settings objects to use.
 
         Args:
             settings: The QWeb(Engine)Settings instance to use, or None to use
                       the global instance.
+
+        Return:
+            A list of QWeb(Engine)Settings objects. The first one should be used
+            for reading.
         """
         if settings is None:
-            return self.GLOBAL_SETTINGS()  # pylint: disable=not-callable
+            return self._get_global_settings()
         else:
-            return settings
+            return [settings]
 
     def save_default(self, settings=None):
         """Save the default value based on the currently set one.
@@ -141,10 +145,11 @@ class Attribute(Base):
             constructor=True)
 
     def get(self, settings=None):
-        return self._get_settings(settings).attribute(self._attribute)
+        return self._get_settings(settings)[0].attribute(self._attribute)
 
     def _set(self, value, settings=None):
-        self._get_settings(settings).setAttribute(self._attribute, value)
+        for obj in self._get_settings(settings):
+            obj.setAttribute(self._attribute, value)
 
 
 class Setter(Base):
@@ -178,16 +183,17 @@ class Setter(Base):
     def get(self, settings=None):
         if self._getter is None:
             raise AttributeError("No getter set!")
-        return self._getter(self._get_settings(settings), *self._args)
+        return self._getter(self._get_settings(settings)[0], *self._args)
 
     def _set(self, value, settings=None):
-        args = [self._get_settings(settings)]
-        args.extend(self._args)
-        if self._unpack:
-            args.extend(value)
-        else:
-            args.append(value)
-        self._setter(*args)
+        for obj in self._get_settings(settings):
+            args = [obj]
+            args.extend(self._args)
+            if self._unpack:
+                args.extend(value)
+            else:
+                args.append(value)
+            self._setter(*args)
 
 
 class NullStringSetter(Setter):

tests/end2end/features/private.feature

@@ -117,3 +117,9 @@ Feature: Using private browsing
         And I run :session-save (tmpdir)/session.yml
         And I wait for "Saved session */session.yml." in the log
         Then the file session.yml should not contain "hello.txt"
+
+    # https://github.com/qutebrowser/qutebrowser/issues/2638
+    Scenario: Turning off javascript with private browsing
+        When I set content -> allow-javascript to false
+        And I open data/javascript/consolelog.html in a private window
+        Then the javascript message "console.log works!" should not be logged