third_party/WebKit/Source/core/frame/SettingsDelegate.h

/*
 * Copyright (C) 2013 Google Inc. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
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 *
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 * notice, this list of conditions and the following disclaimer.
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 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
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 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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#ifndef SettingsDelegate_h
#define SettingsDelegate_h

#include <memory>
#include "core/CoreExport.h"
#include "platform/wtf/Allocator.h"

namespace blink {

class Settings;

class CORE_EXPORT SettingsDelegate {
  DISALLOW_NEW();

 public:
  explicit SettingsDelegate(std::unique_ptr<Settings>);
  virtual ~SettingsDelegate();

  Settings* GetSettings() const { return settings_.get(); }

  // We currently use an enum instead of individual invalidation
  // functions to make generating Settings.in slightly easier.
  enum ChangeType {
    kStyleChange,
    kViewportDescriptionChange,
    kViewportRuleChange,
    kViewportScrollbarChange,
    kDNSPrefetchingChange,
    kImageLoadingChange,
    kTextAutosizingChange,
    kFontFamilyChange,
    kAcceleratedCompositingChange,
    kMediaQueryChange,
    kAccessibilityStateChange,
    kTextTrackKindUserPreferenceChange,
    kDOMWorldsChange,
    kMediaControlsChange,
    kPluginsChange,
  };

  virtual void SettingsChanged(ChangeType) = 0;

 protected:
  std::unique_ptr<Settings> const settings_;
};

}  // namespace blink

#endif  // SettingsDelegate_h