Handle Caps Lock short cut (Shift+Search) in ash [part 2 of 2].

chrome/browser/ui/views/aura/caps_lock_handler.h

+// 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.
+
+#ifndef CHROME_BROWSER_UI_VIEWS_AURA_CAPS_LOCK_HANDLER_H_
+#define CHROME_BROWSER_UI_VIEWS_AURA_CAPS_LOCK_HANDLER_H_
+#pragma once
+
+#include "ash/caps_lock_delegate.h"
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+
+#if defined(OS_CHROMEOS)
+#include "chrome/browser/chromeos/system_key_event_listener.h"
+
+namespace chromeos {
+namespace input_method {
+class XKeyboard;
+}  // namespace input_method
+}  // namespace chromeos
+#endif
+
+// A class which toggles Caps Lock state when the hotkey for Caps Lock
+// is pressed.
+class CapsLockHandler : public ash::CapsLockDelegate
+#if defined(OS_CHROMEOS)
+    , public chromeos::SystemKeyEventListener::CapsLockObserver
+#endif
+{
+ public:
+  CapsLockHandler() {}
+#if defined(OS_CHROMEOS)
+  explicit CapsLockHandler(chromeos::input_method::XKeyboard* xkeyboard);
+#endif
+  virtual ~CapsLockHandler();
+
+  // Overridden from ash::CapsLockHandler:
+  virtual bool HandleToggleCapsLock() OVERRIDE;
+
+#if defined(OS_CHROMEOS)
+  // Overridden from chromeos::SystemKeyEventListener::CapsLockObserver:
+  virtual void OnCapsLockChange(bool enabled) OVERRIDE;
+
+  void set_is_running_on_chromeos_for_test(bool is_running_on_chromeos) {
+    is_running_on_chromeos_ = is_running_on_chromeos;
+  }
+
+  bool caps_lock_is_on_for_test() const {
+    return caps_lock_is_on_;
+  }
+
+ private:
+  chromeos::input_method::XKeyboard* xkeyboard_;
+  bool is_running_on_chromeos_;
+  bool caps_lock_is_on_;
+#endif
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(CapsLockHandler);
+};
+
+#endif  // CHROME_BROWSER_UI_VIEWS_AURA_CAPS_LOCK_HANDLER_H_