blob: 859ea87ce182cf2c92db8d385b7991f0c7d2b2ec [file] [log] [blame]
// 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 CHROME_BROWSER_EXTENSIONS_API_SYSTEM_STORAGE_STORAGE_INFO_PROVIDER_H_
#define CHROME_BROWSER_EXTENSIONS_API_SYSTEM_STORAGE_STORAGE_INFO_PROVIDER_H_
#include <set>
#include "base/lazy_instance.h"
#include "base/memory/ref_counted.h"
#include "base/observer_list_threadsafe.h"
#include "base/timer/timer.h"
#include "chrome/browser/extensions/api/system_info/system_info_provider.h"
#include "chrome/browser/storage_monitor/removable_storage_observer.h"
#include "chrome/browser/storage_monitor/storage_info.h"
#include "chrome/common/extensions/api/system_storage.h"
#include "content/public/browser/notification_observer.h"
#include "content/public/browser/notification_registrar.h"
namespace extensions {
namespace systeminfo {
// Build StorageUnitInfo struct from chrome::StorageInfo instance. The |unit|
// parameter is the output value.
void BuildStorageUnitInfo(const chrome::StorageInfo& info,
api::system_storage::StorageUnitInfo* unit);
} // namespace systeminfo
typedef std::vector<linked_ptr<
api::system_storage::StorageUnitInfo> >
StorageUnitInfoList;
class StorageInfoProvider : public SystemInfoProvider {
public:
// Get the single shared instance of StorageInfoProvider.
static StorageInfoProvider* Get();
// SystemInfoProvider implementations
virtual void PrepareQueryOnUIThread() OVERRIDE;
virtual void InitializeProvider(const base::Closure& do_query_info_callback)
OVERRIDE;
const StorageUnitInfoList& storage_unit_info_list() const;
static void InitializeForTesting(scoped_refptr<StorageInfoProvider> provider);
protected:
StorageInfoProvider();
virtual ~StorageInfoProvider();
// Put all available storages' information into |info_|.
void GetAllStoragesIntoInfoList();
// The last information filled up by QueryInfo and is accessed on multiple
// threads, but the whole class is being guarded by SystemInfoProvider base
// class.
//
// |info_| is accessed on the UI thread while |is_waiting_for_completion_| is
// false and on the sequenced worker pool while |is_waiting_for_completion_|
// is true.
StorageUnitInfoList info_;
private:
// SystemInfoProvider implementations.
// Override to query the available capacity of all known storage devices on
// the blocking pool, including fixed and removable devices.
virtual bool QueryInfo() OVERRIDE;
static base::LazyInstance<scoped_refptr<StorageInfoProvider> > provider_;
DISALLOW_COPY_AND_ASSIGN(StorageInfoProvider);
};
} // namespace extensions
#endif // CHROME_BROWSER_EXTENSIONS_API_SYSTEM_STORAGE_STORAGE_INFO_PROVIDER_H_