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// 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_VIEWS_FOCUS_ACCELERATOR_HANDLER_H_
#define UI_VIEWS_FOCUS_ACCELERATOR_HANDLER_H_
#pragma once
#include "build/build_config.h"
#if defined(TOOLKIT_USES_GTK)
#include <gdk/gdk.h>
#endif
#include <set>
#include <vector>
#include "base/message_loop.h"
namespace ui {
#if defined(TOUCH_UI)
// Dispatch an XEvent to the RootView. Return true if the event was dispatched
// and handled, false otherwise.
bool DispatchXEvent(XEvent* xevent);
#if defined(HAVE_XINPUT2)
// Keep a list of touch devices so that it is possible to determine if a pointer
// event is a touch-event or a mouse-event.
void SetTouchDeviceList(std::vector<unsigned int>& devices);
#endif // HAVE_XINPUT2
#endif // TOUCH_UI
////////////////////////////////////////////////////////////////////////////////
// AcceleratorHandler class
//
// An object that pre-screens all UI messages for potential accelerators.
// Registered accelerators are processed regardless of focus within a given
// Widget or Window.
//
// This processing is done at the Dispatcher level rather than on the Widget
// because of the global nature of this processing, and the fact that not all
// controls within a window need to be Widgets - some are native controls from
// the underlying toolkit wrapped by NativeViewHost.
//
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);
#if defined(TOUCH_UI)
virtual MessagePumpGlibXDispatcher::DispatchStatus Dispatch(XEvent* xev);
#endif
#endif
private:
#if defined(OS_WIN)
// The keys currently pressed and consumed by the FocusManager.
std::set<WPARAM> pressed_keys_;
#endif
DISALLOW_COPY_AND_ASSIGN(AcceleratorHandler);
};
} // namespace ui
#endif // UI_VIEWS_FOCUS_ACCELERATOR_HANDLER_H_
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