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// Copyright (c) 2006-2008 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 VIEWS_FOCUS_ACCELERATOR_HANDLER_H_
#define VIEWS_FOCUS_ACCELERATOR_HANDLER_H_
#include "build/build_config.h"
#if defined(OS_LINUX)
#include <gdk/gdk.h>
#endif
#include <set>
#include "base/message_loop.h"
namespace views {
// This class delegates the key messages to the associated FocusManager class
// for the window that is receiving these messages for accelerator processing.
class AcceleratorHandler : public MessageLoopForUI::Dispatcher {
public:
AcceleratorHandler();
// Dispatcher method. This returns true if an accelerator was processed by the
// focus manager
#if defined(OS_WIN)
virtual bool Dispatch(const MSG& msg);
#else
virtual bool Dispatch(GdkEvent* event);
#endif
private:
#if defined(OS_WIN)
// The keys currently pressed and consumed by the FocusManager.
std::set<WPARAM> pressed_keys_;
#else // OS_LINUX
// The set of hardware keycodes that are currently pressed. We use this
// to keep track of whether or not a key is being pressed in isolation
// or not. We must use hardware keycodes because higher-level keycodes
// may change between press and release depending on what modifier keys
// are pressed in the interim.
std::set<int> pressed_hardware_keys_;
// The set of vkey codes that were consumed by the FocusManager.
std::set<int> consumed_vkeys_;
// True if only the menu key (Alt key) was pressed, and no other keys.
bool only_menu_pressed_;
#endif
DISALLOW_COPY_AND_ASSIGN(AcceleratorHandler);
};
} // namespace views
#endif // VIEWS_FOCUS_ACCELERATOR_HANDLER_H_
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