/*
 * Copyright (C) 2013 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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 */

#ifndef SettingsDelegate_h
#define SettingsDelegate_h

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

namespace blink {

class Settings;

class CORE_EXPORT SettingsDelegate {
  DISALLOW_NEW();

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

  Settings* settings() const { return m_settings.get(); }

  // We currently use an enum instead of individual invalidation
  // functions to make generating Settings.in slightly easier.
  enum ChangeType {
    StyleChange,
    ViewportDescriptionChange,
    ViewportRuleChange,
    DNSPrefetchingChange,
    ImageLoadingChange,
    TextAutosizingChange,
    FontFamilyChange,
    AcceleratedCompositingChange,
    MediaQueryChange,
    AccessibilityStateChange,
    TextTrackKindUserPreferenceChange,
    DOMWorldsChange,
    MediaControlsChange,
  };

  virtual void settingsChanged(ChangeType) = 0;

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

}  // namespace blink

#endif  // SettingsDelegate_h