Handle volume keys within Chrome

chrome/browser/chromeos/login/screen_locker.cc

 // Copyright (c) 2010 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 "chrome/browser/chromeos/login/screen_locker.h"
 
 #include <string>
 #include <vector>
 
 #include "app/l10n_util.h"
@@ skipping 11 matching lines @@
 #include "chrome/browser/chromeos/cros/input_method_library.h"
 #include "chrome/browser/chromeos/cros/keyboard_library.h"
 #include "chrome/browser/chromeos/cros/login_library.h"
 #include "chrome/browser/chromeos/cros/screen_lock_library.h"
 #include "chrome/browser/chromeos/language_preferences.h"
 #include "chrome/browser/chromeos/login/authenticator.h"
 #include "chrome/browser/chromeos/login/background_view.h"
 #include "chrome/browser/chromeos/login/login_utils.h"
 #include "chrome/browser/chromeos/login/message_bubble.h"
 #include "chrome/browser/chromeos/login/screen_lock_view.h"
+#include "chrome/browser/chromeos/system_key_event_listener.h"
 #include "chrome/browser/chromeos/wm_ipc.h"
 #include "chrome/browser/metrics/user_metrics.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/notification_service.h"
 #include "cros/chromeos_wm_ipc_enums.h"
 #include "googleurl/src/gurl.h"
 #include "grit/generated_resources.h"
 #include "grit/theme_resources.h"
 #include "views/screen.h"
 #include "views/widget/root_view.h"
@@ skipping 518 matching lines @@
   lock_window_->SetContentsView(background_view_);
   lock_window_->Show();
 
   // Don't let X draw default background, which was causing flash on
   // resume.
   gdk_window_set_back_pixmap(lock_window_->GetNativeView()->window,
                              NULL, false);
   gdk_window_set_back_pixmap(lock_widget_->GetNativeView()->window,
                              NULL, false);
   lock_window->set_toplevel_focus_widget(lock_widget_->window_contents());
+
+  // Create the SystemKeyEventListener so it can listen for system keyboard
+  // messages regardless of focus while screen locked.
+  SystemKeyEventListener::instance();
 }
 
 void ScreenLocker::OnLoginFailure(const LoginFailure& error) {
   DVLOG(1) << "OnLoginFailure";
   EnableInput();
   // Don't enable signout button here as we're showing
   // MessageBubble.
   gfx::Rect rect = screen_lock_view_->GetPasswordBoundsRelativeTo(
       lock_widget_->GetRootView());
   gfx::Rect lock_widget_bounds;
@@ skipping 252 matching lines @@
 
 bool ScreenLocker::AcceleratorPressed(const views::Accelerator& accelerator) {
   if (!background_view_->IsScreenSaverVisible()) {
     StartScreenSaver();
     return true;
   }
   return false;
 }
 
 }  // namespace chromeos