Add Wallpaper option to launcher context menu

ash/shell.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ash/shell.h"
 
 #include <algorithm>
 #include <string>
 
 #include "ash/accelerators/focus_manager_factory.h"
 #include "ash/ash_switches.h"
 #include "ash/caps_lock_delegate_stub.h"
 #include "ash/desktop_background/desktop_background_controller.h"
 #include "ash/desktop_background/desktop_background_resources.h"
 #include "ash/desktop_background/desktop_background_view.h"
 #include "ash/display/display_controller.h"
 #include "ash/display/mouse_cursor_event_filter.h"
 #include "ash/display/multi_display_manager.h"
 #include "ash/display/screen_position_controller.h"
 #include "ash/display/secondary_display_view.h"
 #include "ash/drag_drop/drag_drop_controller.h"
 #include "ash/focus_cycler.h"
 #include "ash/high_contrast/high_contrast_controller.h"
 #include "ash/launcher/launcher.h"
 #include "ash/magnifier/magnification_controller.h"
 #include "ash/root_window_controller.h"
 #include "ash/screen_ash.h"
-#include "ash/shell_context_menu.h"
 #include "ash/shell_delegate.h"
 #include "ash/shell_factory.h"
 #include "ash/shell_window_ids.h"
 #include "ash/system/status_area_widget.h"
 #include "ash/system/tray/system_tray.h"
 #include "ash/tooltips/tooltip_controller.h"
 #include "ash/touch/touch_observer_hud.h"
 #include "ash/wm/activation_controller.h"
 #include "ash/wm/always_on_top_controller.h"
 #include "ash/wm/app_list_controller.h"
@@ skipping 337 matching lines @@
   aura::RootWindow* root_window = display_controller_->GetPrimaryRootWindow();
   active_root_window_ = root_window;
 
   cursor_manager_.SetDeviceScaleFactor(
       root_window->AsRootWindowHostDelegate()->GetDeviceScaleFactor());
 
 #if !defined(OS_MACOSX)
   nested_dispatcher_controller_.reset(new NestedDispatcherController);
   accelerator_controller_.reset(new AcceleratorController);
 #endif
-  shell_context_menu_.reset(new internal::ShellContextMenu);
 
   // The order in which event filters are added is significant.
   user_activity_detector_.reset(new UserActivityDetector);
   AddEnvEventFilter(user_activity_detector_.get());
 
   event_rewriter_filter_.reset(new internal::EventRewriterEventFilter);
   AddEnvEventFilter(event_rewriter_filter_.get());
 
   overlay_filter_.reset(new internal::OverlayEventFilter);
   AddEnvEventFilter(overlay_filter_.get());
@@ skipping 110 matching lines @@
 }
 
 void Shell::AddEnvEventFilter(aura::EventFilter* filter) {
   aura::Env::GetInstance()->AddPreTargetHandler(filter);
 }
 
 void Shell::RemoveEnvEventFilter(aura::EventFilter* filter) {
   aura::Env::GetInstance()->RemovePreTargetHandler(filter);
 }
 
-void Shell::ShowBackgroundMenu(views::Widget* widget,
-                               const gfx::Point& location) {
+void Shell::ShowContextMenu(const gfx::Point& location) {
   // No context menus if user have not logged in.
   if (!delegate_.get() || !delegate_->IsUserLoggedIn())
     return;
   // No context menus when screen is locked.
   if (IsScreenLocked())
     return;
-  if (shell_context_menu_.get())
-    shell_context_menu_->ShowMenu(widget, location);
+  launcher()->ShowContextMenu(location);

[sky, 2012/10/10 04:07:17]

NULL check this sine it can be NULL.

 }
 
 void Shell::ToggleAppList() {
   if (!app_list_controller_.get())
     app_list_controller_.reset(new internal::AppListController);
   app_list_controller_->SetVisible(!app_list_controller_->IsVisible());
 }
 
 bool Shell::GetAppListTargetVisibility() const {
   return app_list_controller_.get() &&
@@ skipping 278 matching lines @@
        iter != controllers.end(); ++iter) {
     if ((*iter)->GetSystemModalLayoutManager()->
             CanWindowReceiveEvents(window)) {
       return true;
     }
   }
   return false;
 }
 
 }  // namespace ash