| // 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 "base/macros.h" |
| #include "content/common/content_export.h" |
| #include "ui/events/devices/input_device_event_observer.h" |
| |
| namespace content { |
| class RenderViewHostImpl; |
| |
| // 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. |
| class CONTENT_EXPORT InputDeviceChangeObserver |
| : public ui::InputDeviceEventObserver { |
| public: |
| InputDeviceChangeObserver(RenderViewHostImpl* rvh); |
| ~InputDeviceChangeObserver() override; |
| |
| // InputDeviceEventObserver public overrides. |
| void OnInputDeviceConfigurationChanged(uint8_t input_device_types) override; |
| |
| private: |
| RenderViewHostImpl* render_view_host_impl_; |
| DISALLOW_COPY_AND_ASSIGN(InputDeviceChangeObserver); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_BROWSER_RENDERER_HOST_INPUT_INPUT_DEVICE_CHANGE_OBSERVER_H_ |