[gnome-tweak-tool] Add support for changing window titlebar click actions

[John Stowers <jstowers src gnome org>]

commit 6b4e89a0456075da1453467619c18d14d0849ebc
Author: John Stowers <john stowers gmail com>
Date:   Fri Mar 18 15:40:41 2011 +1300

    Add support for changing window titlebar click actions
    
    AKA the famous Linus bug. You can now adjust the action when
    double, right or middle clicking on the window titlebar.
    
    Fixes #408898, #408906, #408907

 gtweak/tweaks/tweak_windows.py |   25 +++++++++++++++++++++++++
 1 files changed, 25 insertions(+), 0 deletions(-)
---
diff --git a/gtweak/tweaks/tweak_windows.py b/gtweak/tweaks/tweak_windows.py
new file mode 100644
index 0000000..95ef4c3
--- /dev/null
+++ b/gtweak/tweaks/tweak_windows.py
@@ -0,0 +1,25 @@
+from gtweak.tweakmodel import TweakGroup
+from gtweak.widgets import GConfComboTweak, build_horizontal_sizegroup
+
+class ActionClickTitlebarTweak(GConfComboTweak):
+    def __init__(self, key_name, **options):
+
+        #from the metacity schema
+        schema_options = ('toggle_shade', 'toggle_maximize', 'toggle_maximize_horizontally',
+                          'toggle_maximize_vertically', 'minimize', 'shade', 'menu', 'lower', 'none')
+
+        GConfComboTweak.__init__(self,
+            key_name,
+            str,
+            [(o, o.replace("_"," ").title()) for o in schema_options],
+            **options)
+
+sg = build_horizontal_sizegroup()
+
+TWEAK_GROUPS = (
+        TweakGroup(
+            "Windows",
+            ActionClickTitlebarTweak("/apps/metacity/general/action_double_click_titlebar", size_group=sg),
+            ActionClickTitlebarTweak("/apps/metacity/general/action_middle_click_titlebar", size_group=sg),
+            ActionClickTitlebarTweak("/apps/metacity/general/action_right_click_titlebar", size_group=sg)),
+)