manager: Make code organization more readable

As has been done with other files, try to group similar functions in
commented blocks, and break apart massive __init__ functions into chunks.

src/virtManager/details.py

@@ -27,11 +27,11 @@ import traceback
 import os
 
 import virtManager.addhardware
+import virtManager.uihelpers as uihelpers
 from virtManager.error import vmmErrorDialog
 from virtManager.addhardware import vmmAddHardware
 from virtManager.choosecd import vmmChooseCD
 from virtManager.console import vmmConsolePages
-from virtManager.manager import build_shutdown_button_menu
 from virtManager.serialcon import vmmSerialConsole
 from virtManager.graphwidgets import Sparkline
 from virtManager import util as util
@@ -285,7 +285,8 @@ class vmmDetails(gobject.GObject):
 
     def init_menus(self):
         # Shutdown button menu
-        build_shutdown_button_menu(self.config,
+        uihelpers.build_shutdown_button_menu(
+                                   self.config,
                                    self.window.get_widget("control-shutdown"),
                                    self.control_vm_shutdown,
                                    self.control_vm_reboot,

src/virtManager/uihelpers.py

@@ -230,3 +230,33 @@ def generate_macaddr(conn):
         pass
 
     return newmac
+
+# Build toolbar shutdown button menu (manager and details toolbar)
+def build_shutdown_button_menu(config, widget, shutdown_cb, reboot_cb,
+                               destroy_cb):
+    icon_name = config.get_shutdown_icon_name()
+    widget.set_icon_name(icon_name)
+    menu = gtk.Menu()
+    widget.set_menu(menu)
+
+    rebootimg = gtk.image_new_from_icon_name(icon_name, gtk.ICON_SIZE_MENU)
+    shutdownimg = gtk.image_new_from_icon_name(icon_name, gtk.ICON_SIZE_MENU)
+    destroyimg = gtk.image_new_from_icon_name(icon_name, gtk.ICON_SIZE_MENU)
+
+    reboot = gtk.ImageMenuItem(_("_Reboot"))
+    reboot.set_image(rebootimg)
+    reboot.show()
+    reboot.connect("activate", reboot_cb)
+    menu.add(reboot)
+
+    shutdown = gtk.ImageMenuItem(_("_Shut Down"))
+    shutdown.set_image(shutdownimg)
+    shutdown.show()
+    shutdown.connect("activate", shutdown_cb)
+    menu.add(shutdown)
+
+    destroy = gtk.ImageMenuItem(_("_Force Off"))
+    destroy.set_image(destroyimg)
+    destroy.show()
+    destroy.connect("activate", destroy_cb)
+    menu.add(destroy)