Bugs with console fixed. (mitmproxy#2746)

Clicking on a tab now focuses it. Fixes mitmproxy#2676.

mitmproxy/tools/console/window.py

@@ -16,7 +16,10 @@
 
 
 class StackWidget(urwid.Frame):
-    def __init__(self, widget, title, focus):
+    def __init__(self, window, widget, title, focus):
+        self.is_focused = focus
+        self.window = window
+
         if title:
             header = urwid.AttrWrap(
                 urwid.Text(title),
@@ -29,6 +32,11 @@ def __init__(self, widget, title, focus):
             header=header
         )
 
+    def mouse_event(self, size, event, button, col, row, focus):
+        if event == "mouse press" and button == 1 and not self.is_focused:
+            self.window.switch()
+        return super().mouse_event(size, event, button, col, row, focus)
+
     def keypress(self, size, key):
         # Make sure that we don't propagate cursor events outside of the widget.
         # Otherwise, in a horizontal layout, urwid's Pile would change the focused widget
@@ -162,6 +170,7 @@ def wrapped(idx):
             else:
                 title = None
             return StackWidget(
+                self,
                 widget,
                 title,
                 self.pane == idx