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// Copyright (c) 2012 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 CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_MANAGER_IMPL_H_
#define CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_MANAGER_IMPL_H_
#include <map>
#include <set>
#include "base/hash_tables.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/observer_list.h"
#include "base/synchronization/lock.h"
#include "base/task/sequenced_task_runner_helpers.h"
#include "content/browser/download/download_item_impl_delegate.h"
#include "content/common/content_export.h"
#include "content/public/browser/download_manager.h"
#include "content/public/browser/download_url_parameters.h"
namespace net {
class BoundNetLog;
}
namespace content {
class DownloadFileFactory;
class DownloadItemFactory;
class DownloadItemImpl;
class DownloadRequestHandleInterface;
class CONTENT_EXPORT DownloadManagerImpl : public DownloadManager,
private DownloadItemImplDelegate {
public:
// Caller guarantees that |net_log| will remain valid
// for the lifetime of DownloadManagerImpl (until Shutdown() is called).
DownloadManagerImpl(net::NetLog* net_log, BrowserContext* browser_context);
// Implementation functions (not part of the DownloadManager interface).
// Creates a download item for the SavePackage system.
// Must be called on the UI thread. Note that the DownloadManager
// retains ownership.
virtual DownloadItemImpl* CreateSavePackageDownloadItem(
const base::FilePath& main_file_path,
const GURL& page_url,
const std::string& mime_type,
scoped_ptr<DownloadRequestHandleInterface> request_handle,
DownloadItem::Observer* observer);
// Notifies DownloadManager about a successful completion of |download_item|.
void OnSavePackageSuccessfullyFinished(DownloadItem* download_item);
// DownloadManager functions.
virtual void SetDelegate(DownloadManagerDelegate* delegate) OVERRIDE;
virtual DownloadManagerDelegate* GetDelegate() const OVERRIDE;
virtual void Shutdown() OVERRIDE;
virtual void GetAllDownloads(DownloadVector* result) OVERRIDE;
virtual DownloadItem* StartDownload(
scoped_ptr<DownloadCreateInfo> info,
scoped_ptr<ByteStreamReader> stream) OVERRIDE;
virtual void CancelDownload(int32 download_id) OVERRIDE;
virtual int RemoveDownloadsBetween(base::Time remove_begin,
base::Time remove_end) OVERRIDE;
virtual int RemoveDownloads(base::Time remove_begin) OVERRIDE;
virtual int RemoveAllDownloads() OVERRIDE;
virtual void DownloadUrl(scoped_ptr<DownloadUrlParameters> params) OVERRIDE;
virtual void AddObserver(Observer* observer) OVERRIDE;
virtual void RemoveObserver(Observer* observer) OVERRIDE;
virtual content::DownloadItem* CreateDownloadItem(
const base::FilePath& current_path,
const base::FilePath& target_path,
const std::vector<GURL>& url_chain,
const GURL& referrer_url,
const base::Time& start_time,
const base::Time& end_time,
int64 received_bytes,
int64 total_bytes,
content::DownloadItem::DownloadState state,
DownloadDangerType danger_type,
DownloadInterruptReason interrupt_reason,
bool opened) OVERRIDE;
virtual int InProgressCount() const OVERRIDE;
virtual BrowserContext* GetBrowserContext() const OVERRIDE;
virtual void CheckForHistoryFilesRemoval() OVERRIDE;
virtual DownloadItem* GetDownload(int id) OVERRIDE;
// For testing; specifically, accessed from TestFileErrorInjector.
void SetDownloadItemFactoryForTesting(
scoped_ptr<DownloadItemFactory> item_factory);
void SetDownloadFileFactoryForTesting(
scoped_ptr<DownloadFileFactory> file_factory);
virtual DownloadFileFactory* GetDownloadFileFactoryForTesting();
private:
typedef std::set<DownloadItem*> DownloadSet;
typedef base::hash_map<int32, DownloadItemImpl*> DownloadMap;
typedef std::vector<DownloadItemImpl*> DownloadItemImplVector;
// For testing.
friend class DownloadManagerTest;
friend class DownloadTest;
friend class base::RefCountedThreadSafe<DownloadManagerImpl>;
virtual ~DownloadManagerImpl();
// Create a new active item based on the info. Separate from
// StartDownload() for testing.
void CreateActiveItem(DownloadId id, const DownloadCreateInfo& info);
// Get next download id.
DownloadId GetNextId();
// Called with the result of DownloadManagerDelegate::CheckForFileExistence.
// Updates the state of the file and then notifies this update to the file's
// observer.
void OnFileExistenceChecked(int32 download_id, bool result);
// Overridden from DownloadItemImplDelegate
// (Note that |GetBrowserContext| are present in both interfaces.)
virtual void DetermineDownloadTarget(
DownloadItemImpl* item, const DownloadTargetCallback& callback) OVERRIDE;
virtual bool ShouldCompleteDownload(
DownloadItemImpl* item, const base::Closure& complete_callback) OVERRIDE;
virtual bool ShouldOpenFileBasedOnExtension(
const base::FilePath& path) OVERRIDE;
virtual bool ShouldOpenDownload(
DownloadItemImpl* item,
const ShouldOpenDownloadCallback& callback) OVERRIDE;
virtual void CheckForFileRemoval(DownloadItemImpl* download_item) OVERRIDE;
virtual void ResumeInterruptedDownload(
scoped_ptr<content::DownloadUrlParameters> params,
content::DownloadId id) OVERRIDE;
virtual void OpenDownload(DownloadItemImpl* download) OVERRIDE;
virtual void ShowDownloadInShell(DownloadItemImpl* download) OVERRIDE;
virtual void DownloadRemoved(DownloadItemImpl* download) OVERRIDE;
// Factory for creation of downloads items.
scoped_ptr<DownloadItemFactory> item_factory_;
// Factory for the creation of download files.
scoped_ptr<DownloadFileFactory> file_factory_;
// |downloads_| is the owning set for all downloads known to the
// DownloadManager. This includes downloads started by the user in
// this session, downloads initialized from the history system, and
// "save page as" downloads.
DownloadMap downloads_;
int history_size_;
// True if the download manager has been initialized and requires a shutdown.
bool shutdown_needed_;
// Observers that want to be notified of changes to the set of downloads.
ObserverList<Observer> observers_;
// The current active browser context.
BrowserContext* browser_context_;
// Allows an embedder to control behavior. Guaranteed to outlive this object.
DownloadManagerDelegate* delegate_;
net::NetLog* net_log_;
DISALLOW_COPY_AND_ASSIGN(DownloadManagerImpl);
};
} // namespace content
#endif // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_MANAGER_IMPL_H_
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