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// Copyright 2017 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 CONTENT_BROWSER_RENDERER_HOST_INPUT_INPUT_DEVICE_CHANGE_OBSERVER_H_
#define CONTENT_BROWSER_RENDERER_HOST_INPUT_INPUT_DEVICE_CHANGE_OBSERVER_H_
#include "content/public/browser/render_view_host.h"
#include "ui/events/devices/input_device_event_observer.h"
// This class monitors input changes on all platforms.
//
// It is responsible to instantiate the various platforms observers
// and it gets notified whenever the input capabilities change. Whenever
// a change is detected the WebKit preferences are getting updated so the
// interactions media-queries can be updated.
namespace content {
class CONTENT_EXPORT InputDeviceChangeObserver
: public ui::InputDeviceEventObserver {
public:
InputDeviceChangeObserver(RenderViewHost* rvh);
~InputDeviceChangeObserver() override;
// InputDeviceEventObserver public overrides.
void OnTouchscreenDeviceConfigurationChanged() override;
void OnKeyboardDeviceConfigurationChanged() override;
void OnMouseDeviceConfigurationChanged() override;
void OnTouchpadDeviceConfigurationChanged() override;
private:
RenderViewHost* render_view_host_;
void NotifyRenderViewHost();
DISALLOW_COPY_AND_ASSIGN(InputDeviceChangeObserver);
};
} // namespace content
#endif // CONTENT_BROWSER_RENDERER_HOST_INPUT_INPUT_DEVICE_CHANGE_OBSERVER_H_
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