Add touchpad speed factor setting to Chrome OS touchpad settings page...

views/controls/slider/native_slider_wrapper.h

+// Copyright (c) 2009 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_CONTROLS_SLIDER_NATIVE_SLIDER_WRAPPER_H_
+#define VIEWS_CONTROLS_SLIDER_NATIVE_SLIDER_WRAPPER_H_
+
+#include "base/gfx/native_widget_types.h"
+
+namespace views {
+
+class Slider;
+class View;
+
+// An interface implemented by an object that provides a platform-native slider.
+class NativeSliderWrapper {
+ public:
+  // The Slider calls this when it is destroyed to clean up the wrapper object.
+  virtual ~NativeSliderWrapper() {}
+
+  // Updates the enabled state of the native slider.
+  virtual void UpdateEnabled() = 0;
+
+  // Gets the value of the slider.
+  virtual double GetValue() = 0;
+
+  // Sets the value of the slider.
+  virtual void SetValue(double value) = 0;
+
+  // Sets the focus to the slider.
+  virtual void SetFocus() = 0;
+
+  // Returns the preferred size of the combobox.
+  virtual gfx::Size GetPreferredSize() = 0;
+
+  // Retrieves the views::View that hosts the native control.
+  virtual View* GetView() = 0;
+
+  // Returns a handle to the underlying native view for testing.
+  virtual gfx::NativeView GetTestingHandle() const = 0;
+
+  // Creates an appropriate NativeSliderWrapper for the platform.
+  static NativeSliderWrapper* CreateWrapper(Slider* slider);
+};
+
+}  // namespace views
+
+#endif  // VIEWS_CONTROLS_SLIDER_NATIVE_SLIDER_WRAPPER_H_