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// Copyright 2013 The Chromium Authors
// 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 "base/memory/raw_ptr.h"
#include "base/scoped_observation.h"
#include "components/keyed_service/core/keyed_service.h"
#include "extensions/browser/api/file_system/saved_files_service_interface.h"
#include "extensions/browser/extension_host_registry.h"
#include "extensions/common/extension_id.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 extensions::ExtensionHostRegistry::Observer {
public:
explicit SavedFilesService(content::BrowserContext* context);
SavedFilesService(const SavedFilesService&) = delete;
SavedFilesService& operator=(const SavedFilesService&) = delete;
~SavedFilesService() override;
static SavedFilesService* Get(content::BrowserContext* context);
// extensions::SavedFilesServiceInterface:
void RegisterFileEntry(const extensions::ExtensionId& extension_id,
const std::string& id,
const base::FilePath& file_path,
bool is_directory) override;
void EnqueueFileEntry(const extensions::ExtensionId& extension_id,
const std::string& id) override;
bool IsRegistered(const extensions::ExtensionId& extension_id,
const std::string& id) override;
const extensions::SavedFileEntry* GetFileEntry(
const extensions::ExtensionId& extension_id,
const std::string& id) override;
// Returns all registered file entries.
std::vector<extensions::SavedFileEntry> GetAllFileEntries(
const extensions::ExtensionId& 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;
// extensions::ExtensionHostRegistry::Observer:
void OnExtensionHostDestroyed(content::BrowserContext* browser_context,
extensions::ExtensionHost* host) override;
// Returns the SavedFiles for |extension_id| or NULL if one does not exist.
SavedFiles* Get(const extensions::ExtensionId& extension_id) const;
// Returns the SavedFiles for |extension_id|, creating it if necessary.
SavedFiles* GetOrInsert(const extensions::ExtensionId& extension_id);
// Clears the SavedFiles for |extension_id|.
void Clear(const extensions::ExtensionId& extension_id);
static void SetMaxSequenceNumberForTest(int max_value);
static void ClearMaxSequenceNumberForTest();
static void SetLruSizeForTest(int size);
static void ClearLruSizeForTest();
std::map<extensions::ExtensionId, std::unique_ptr<SavedFiles>>
extension_id_to_saved_files_;
raw_ptr<content::BrowserContext> context_;
base::ScopedObservation<extensions::ExtensionHostRegistry,
extensions::ExtensionHostRegistry::Observer>
extension_host_registry_observation_{this};
};
} // namespace apps
#endif // APPS_SAVED_FILES_SERVICE_H_
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