Clear notification messages in a window when they're clicked.

qutebrowser/config/configdata.py

@@ -407,6 +407,10 @@ def data(readonly=False):
              SettingValue(typ.Bool(), 'true'),
              "Show a filebrowser in upload/download prompts."),
 
+            ('clear-messages-on-click',
+             SettingValue(typ.Bool(), 'false'),
+             "Whether to clear message notifications when they are clicked."),
+
             readonly=readonly
         )),
 

qutebrowser/mainwindow/messageview.py

@@ -130,3 +130,8 @@ class MessageView(QWidget):
         self._last_text = text
         self.show()
         self.update_geometry.emit()
+
+    def mousePressEvent(self, e):
+        if (config.get('ui', 'clear-messages-on-click') and
+                e.button() in [Qt.LeftButton, Qt.RightButton]):
+            self.clear_messages()