Split a part of code managing accelerators from views::FocusManager.

ui/base/accelerator_manager.h

Index: ui/base/accelerator_manager.h
diff --git a/ui/base/accelerator_manager.h b/ui/base/accelerator_manager.h
new file mode 100644
index 0000000000000000000000000000000000000000..703d2c48dce273ff60eb866e7af7eeaf55101b02
--- /dev/null
+++ b/ui/base/accelerator_manager.h
@@ -0,0 +1,65 @@
+// Copyright (c) 2011 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 UI_BASE_ACCELERATOR_MANAGER_H_
+#define UI_BASE_ACCELERATOR_MANAGER_H_
+#pragma once
+
+#include <list>
+#include <map>
+
+#include "base/basictypes.h"
+#include "ui/base/models/accelerator.h"
+#include "ui/base/ui_export.h"
+
+namespace ui {
+
+// The AcceleratorManger is used to handle keyboard accelerators.
+class UI_EXPORT AcceleratorManager {
+ public:
+  AcceleratorManager();
+  ~AcceleratorManager();
+
+  // Register a keyboard accelerator for the specified target. If multiple
+  // targets are registered for an accelerator, a target registered later has
+  // higher priority.
+  // Note that we are currently limited to accelerators that are either:
+  // - a key combination including Ctrl or Alt
+  // - the escape key
+  // - the enter key
+  // - any F key (F1, F2, F3 ...)
+  // - any browser specific keys (as available on special keyboards)
+  void Register(const Accelerator& accelerator, AcceleratorTarget* target);
+
+  // Unregister the specified keyboard accelerator for the specified target.
+  void Unregister(const Accelerator& accelerator, AcceleratorTarget* target);
+
+  // Unregister all keyboard accelerator for the specified target.
+  void UnregisterAll(AcceleratorTarget* target);
+
+  // Activate the target associated with the specified accelerator.
+  // First, AcceleratorPressed handler of the most recently registered target
+  // is called, and if that handler processes the event (i.e. returns true),
+  // this method immediately returns. If not, we do the same thing on the next
+  // target, and so on.
+  // Returns true if an accelerator was activated.
+  bool Process(const Accelerator& accelerator);
+
+  // Returns the AcceleratorTarget that should be activated for the specified
+  // keyboard accelerator, or NULL if no view is registered for that keyboard
+  // accelerator.
+  AcceleratorTarget* GetCurrentTarget(const Accelerator& accelertor) const;
+
+ private:
+  // The accelerators and associated targets.
+  typedef std::list<AcceleratorTarget*> AcceleratorTargetList;
+  typedef std::map<Accelerator, AcceleratorTargetList> AcceleratorMap;
+  AcceleratorMap accelerators_;
+
+  DISALLOW_COPY_AND_ASSIGN(AcceleratorManager);
+};
+
+}  // namespace ui
+
+#endif  // UI_BASE_ACCELERATOR_MANAGER_H_