Make tab close mouse button configurable

qutebrowser/config/configdata.py

@@ -401,9 +401,9 @@ DATA = OrderedDict([
          SettingValue(types.Bool(), 'true'),
          "Whether tabs should be movable."),
 
-        ('close-on-right-click',
-         SettingValue(types.Bool(), 'false'),
-         "Whether tabs should close when right-clicked."),
+        ('close-mouse-button',
+         SettingValue(types.CloseButton(), 'middle'),
+         "On which mouse button to close tabs."),
 
         ('position',
          SettingValue(types.Position(), 'north'),

qutebrowser/config/conftypes.py

@@ -935,3 +935,12 @@ class ForwardUnboundKeys(BaseType):
                                ('auto', "Forward unbound non-alphanumeric "
                                         "keys."),
                                ('none', "Don't forward any keys."))
+
+
+class CloseButton(BaseType):
+
+    """Whether to forward unbound keys."""
+
+    valid_values = ValidValues(('right', "Close tabs on right-click."),
+                               ('middle', "Close tabs on middle-click."),
+                               ('none', "Don't close tabs using the mouse."))

qutebrowser/widgets/tabwidget.py

@@ -126,17 +126,16 @@ class TabBar(QTabBar):
                                           self.count())
 
     def mousePressEvent(self, e):
-        """Override mousePressEvent to emit tabCloseRequested on rightclick."""
-        if e.button() != Qt.RightButton:
-            super().mousePressEvent(e)
-            return
-        idx = self.tabAt(e.pos())
-        if idx == -1:
-            super().mousePressEvent(e)
-            return
-        e.accept()
-        if config.get('tabbar', 'close-on-right-click'):
-            self.tabCloseRequested.emit(idx)
+        """Override mousePressEvent to close tabs if configured."""
+        button = config.get('tabbar', 'close-mouse-button')
+        if (e.button() == Qt.RightButton and button == 'right' or
+                e.button() == Qt.MiddleButton and button == 'middle'):
+            idx = self.tabAt(e.pos())
+            if idx != -1:
+                e.accept()
+                self.tabCloseRequested.emit(idx)
+                return
+        super().mousePressEvent(e)
 
     def minimumTabSizeHint(self, index):
         """Override minimumTabSizeHint because we want no hard minimum.