Move send_event to AbstractTab

This means subclasses only need to implement _event_target.

qutebrowser/browser/browsertab.py

@@ -23,7 +23,7 @@ import itertools
 
 from PyQt5.QtCore import pyqtSignal, pyqtSlot, QUrl, QObject, QSizeF
 from PyQt5.QtGui import QIcon
-from PyQt5.QtWidgets import QWidget
+from PyQt5.QtWidgets import QWidget, QApplication
 
 from qutebrowser.keyinput import modeman
 from qutebrowser.config import config
@@ -562,9 +562,15 @@ class AbstractTab(QWidget):
         self._load_status = val
         self.load_status_changed.emit(val.name)
 
+    def _event_target(self):
+        """Return the widget events should be sent to."""
+        raise NotImplementedError
+
     def send_event(self, evt):
         """Send the given event to the underlying widget."""
-        raise NotImplementedError
+        recipient = self._event_target()
+        QApplication.sendEvent(recipient, evt)
+
 
     @pyqtSlot(QUrl)
     def _on_link_clicked(self, url):

qutebrowser/browser/webengine/webenginetab.py

@@ -26,7 +26,6 @@ import functools
 
 from PyQt5.QtCore import pyqtSlot, Qt, QEvent, QPoint, QUrl
 from PyQt5.QtGui import QKeyEvent, QIcon
-from PyQt5.QtWidgets import QApplication
 # pylint: disable=no-name-in-module,import-error,useless-suppression
 from PyQt5.QtWebEngineWidgets import QWebEnginePage, QWebEngineScript
 # pylint: enable=no-name-in-module,import-error,useless-suppression
@@ -526,6 +525,5 @@ class WebEngineTab(browsertab.AbstractTab):
         except AttributeError:
             log.stub('contentsSizeChanged, on Qt < 5.7')
 
-    def send_event(self, evt):
-        recipient = self._widget.focusProxy()
-        QApplication.sendEvent(recipient, evt)
+    def _event_target(self):
+        return self._widget.focusProxy()

qutebrowser/browser/webkit/webkittab.py

@@ -28,7 +28,6 @@ from PyQt5.QtCore import (pyqtSlot, Qt, QEvent, QUrl, QPoint, QTimer, QSizeF,
 from PyQt5.QtGui import QKeyEvent
 from PyQt5.QtWebKitWidgets import QWebPage, QWebFrame
 from PyQt5.QtWebKit import QWebSettings
-from PyQt5.QtWidgets import QApplication
 from PyQt5.QtPrintSupport import QPrinter
 
 from qutebrowser.browser import browsertab
@@ -696,5 +695,5 @@ class WebKitTab(browsertab.AbstractTab):
         frame.initialLayoutCompleted.connect(self._on_history_trigger)
         page.link_clicked.connect(self._on_link_clicked)
 
-    def send_event(self, evt):
-        QApplication.sendEvent(self._widget, evt)
+    def _event_target(self):
+        return self._widget