chrome/browser/offline_pages/offline_page_model_factory.h

// Copyright 2015 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 CHROME_BROWSER_OFFLINE_PAGES_OFFLINE_PAGE_MODEL_FACTORY_H_
#define CHROME_BROWSER_OFFLINE_PAGES_OFFLINE_PAGE_MODEL_FACTORY_H_

#include <memory>

#include "base/macros.h"
#include "components/keyed_service/core/simple_keyed_service_factory.h"

namespace base {
template <typename T>
struct DefaultSingletonTraits;
}  // namespace base

namespace content {
class BrowserContext;
}  // namespace content

namespace offline_pages {

class OfflinePageModel;

// A factory to create one unique OfflinePageModel. Offline pages are not
// supported in incognito, and this class uses default implementation of
// |GetBrowserContextToUse|.
// TODO(fgorski): Add an integration test that ensures incognito users don't
// save or open offline pages.
class OfflinePageModelFactory : public SimpleKeyedServiceFactory {
 public:
  static OfflinePageModelFactory* GetInstance();
  static OfflinePageModel* GetForKey(SimpleFactoryKey* key, PrefService* prefs);

  // Helper method that calls GetForKey(). Extracts the SimpleFactoryKey and
  // the PrefService from |browser_context|, which is assumed to be a Profile.
  static OfflinePageModel* GetForBrowserContext(
      content::BrowserContext* browser_context);

 private:
  friend struct base::DefaultSingletonTraits<OfflinePageModelFactory>;

  OfflinePageModelFactory();
  ~OfflinePageModelFactory() override {}

  std::unique_ptr<KeyedService> BuildServiceInstanceFor(
      SimpleFactoryKey* key,
      PrefService* prefs) const override;

  DISALLOW_COPY_AND_ASSIGN(OfflinePageModelFactory);
};

}  // namespace offline_pages

#endif  // CHROME_BROWSER_OFFLINE_PAGES_OFFLINE_PAGE_MODEL_FACTORY_H_