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// Copyright 2013 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 APPS_SAVED_FILES_SERVICE_H_
#define APPS_SAVED_FILES_SERVICE_H_
#include <map>
#include <memory>
#include <set>
#include <string>
#include <vector>
#include "base/files/file_path.h"
#include "base/gtest_prod_util.h"
#include "components/keyed_service/core/keyed_service.h"
#include "content/public/browser/notification_observer.h"
#include "content/public/browser/notification_registrar.h"
#include "extensions/browser/api/file_system/saved_files_service_interface.h"
namespace content {
class BrowserContext;
}
class SavedFilesServiceUnitTest;
FORWARD_DECLARE_TEST(SavedFilesServiceUnitTest, RetainTwoFilesTest);
FORWARD_DECLARE_TEST(SavedFilesServiceUnitTest, EvictionTest);
FORWARD_DECLARE_TEST(SavedFilesServiceUnitTest, SequenceNumberCompactionTest);
namespace extensions {
class Extension;
struct SavedFileEntry;
}
namespace apps {
// Tracks the files that apps have retained access to both while running and
// when suspended.
class SavedFilesService : public extensions::SavedFilesServiceInterface,
public KeyedService,
public content::NotificationObserver {
public:
explicit SavedFilesService(content::BrowserContext* context);
~SavedFilesService() override;
static SavedFilesService* Get(content::BrowserContext* context);
// extensions::SavedFilesServiceInterface:
void RegisterFileEntry(const std::string& extension_id,
const std::string& id,
const base::FilePath& file_path,
bool is_directory) override;
void EnqueueFileEntry(const std::string& extension_id,
const std::string& id) override;
bool IsRegistered(const std::string& extension_id,
const std::string& id) override;
const extensions::SavedFileEntry* GetFileEntry(
const std::string& extension_id,
const std::string& id) override;
// Returns all registered file entries.
std::vector<extensions::SavedFileEntry> GetAllFileEntries(
const std::string& extension_id);
// Clears all retained files if the app does not have the
// fileSystem.retainEntries permission.
void ClearQueueIfNoRetainPermission(const extensions::Extension* extension);
// Clears all retained files.
void ClearQueue(const extensions::Extension* extension);
// Called to notify that the application has begun to exit.
void OnApplicationTerminating();
private:
FRIEND_TEST_ALL_PREFIXES(::SavedFilesServiceUnitTest, RetainTwoFilesTest);
FRIEND_TEST_ALL_PREFIXES(::SavedFilesServiceUnitTest, EvictionTest);
FRIEND_TEST_ALL_PREFIXES(::SavedFilesServiceUnitTest,
SequenceNumberCompactionTest);
friend class ::SavedFilesServiceUnitTest;
// A container for the registered files for an app.
class SavedFiles;
// content::NotificationObserver.
void Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) override;
// Returns the SavedFiles for |extension_id| or NULL if one does not exist.
SavedFiles* Get(const std::string& extension_id) const;
// Returns the SavedFiles for |extension_id|, creating it if necessary.
SavedFiles* GetOrInsert(const std::string& extension_id);
// Clears the SavedFiles for |extension_id|.
void Clear(const std::string& extension_id);
static void SetMaxSequenceNumberForTest(int max_value);
static void ClearMaxSequenceNumberForTest();
static void SetLruSizeForTest(int size);
static void ClearLruSizeForTest();
std::map<std::string, std::unique_ptr<SavedFiles>>
extension_id_to_saved_files_;
content::NotificationRegistrar registrar_;
content::BrowserContext* context_;
DISALLOW_COPY_AND_ASSIGN(SavedFilesService);
};
} // namespace apps
#endif // APPS_SAVED_FILES_SERVICE_H_