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scoped_preferred_scroller_style_mac.h
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scoped_preferred_scroller_style_mac.h
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// Copyright 2016 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_BASE_TEST_SCOPED_PREFERRED_SCROLLER_STYLE_LEGACY_MAC_H_
#define UI_BASE_TEST_SCOPED_PREFERRED_SCROLLER_STYLE_LEGACY_MAC_H_
#include <memory>
#include "base/macros.h"
namespace base {
namespace mac {
class ScopedObjCClassSwizzler;
}
}
namespace ui {
namespace test {
// Overrides system setting for scrollbar style with NSScrollerOverlay if we
// want the scrollbar to overlay. Otherwise, override with
// NSScrollerStyleLegacy which means "always show scrollbars".
class ScopedPreferredScrollerStyle {
public:
explicit ScopedPreferredScrollerStyle(bool overlay);
~ScopedPreferredScrollerStyle();
private:
std::unique_ptr<base::mac::ScopedObjCClassSwizzler> swizzler_;
// True if the scrollbar style should overlay.
bool overlay_;
DISALLOW_COPY_AND_ASSIGN(ScopedPreferredScrollerStyle);
};
} // namespace test
} // namespace ui
#endif // UI_BASE_TEST_SCOPED_PREFERRED_SCROLLER_STYLE_LEGACY_MAC_H_