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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 CHROME_BROWSER_DOWNLOAD_CHROME_DOWNLOAD_MANAGER_DELEGATE_H_
#define CHROME_BROWSER_DOWNLOAD_CHROME_DOWNLOAD_MANAGER_DELEGATE_H_
#include "base/compiler_specific.h"
#include "base/containers/hash_tables.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "chrome/browser/download/download_path_reservation_tracker.h"
#include "chrome/browser/download/download_target_determiner_delegate.h"
#include "chrome/browser/download/download_target_info.h"
#include "chrome/browser/safe_browsing/download_protection_service.h"
#include "content/public/browser/download_danger_type.h"
#include "content/public/browser/download_item.h"
#include "content/public/browser/download_manager_delegate.h"
#include "content/public/browser/notification_observer.h"
#include "content/public/browser/notification_registrar.h"
class DownloadPrefs;
class Profile;
namespace content {
class DownloadManager;
}
namespace extensions {
class CrxInstaller;
}
namespace user_prefs {
class PrefRegistrySyncable;
}
#if defined(COMPILER_GCC) && defined(ENABLE_EXTENSIONS)
namespace BASE_HASH_NAMESPACE {
template<>
struct hash<extensions::CrxInstaller*> {
std::size_t operator()(extensions::CrxInstaller* const& p) const {
return reinterpret_cast<std::size_t>(p);
}
};
} // namespace BASE_HASH_NAMESPACE
#endif
// This is the Chrome side helper for the download system.
class ChromeDownloadManagerDelegate
: public content::DownloadManagerDelegate,
public content::NotificationObserver,
public DownloadTargetDeterminerDelegate {
public:
explicit ChromeDownloadManagerDelegate(Profile* profile);
virtual ~ChromeDownloadManagerDelegate();
// Should be called before the first call to ShouldCompleteDownload() to
// disable SafeBrowsing checks for |item|.
static void DisableSafeBrowsing(content::DownloadItem* item);
void SetDownloadManager(content::DownloadManager* dm);
// Callbacks passed to GetNextId() will not be called until the returned
// callback is called.
content::DownloadIdCallback GetDownloadIdReceiverCallback();
// content::DownloadManagerDelegate
virtual void Shutdown() OVERRIDE;
virtual void GetNextId(const content::DownloadIdCallback& callback) OVERRIDE;
virtual bool DetermineDownloadTarget(
content::DownloadItem* item,
const content::DownloadTargetCallback& callback) OVERRIDE;
virtual bool ShouldOpenFileBasedOnExtension(
const base::FilePath& path) OVERRIDE;
virtual bool ShouldCompleteDownload(
content::DownloadItem* item,
const base::Closure& complete_callback) OVERRIDE;
virtual bool ShouldOpenDownload(
content::DownloadItem* item,
const content::DownloadOpenDelayedCallback& callback) OVERRIDE;
virtual bool GenerateFileHash() OVERRIDE;
virtual void GetSaveDir(content::BrowserContext* browser_context,
base::FilePath* website_save_dir,
base::FilePath* download_save_dir,
bool* skip_dir_check) OVERRIDE;
virtual void ChooseSavePath(
content::WebContents* web_contents,
const base::FilePath& suggested_path,
const base::FilePath::StringType& default_extension,
bool can_save_as_complete,
const content::SavePackagePathPickedCallback& callback) OVERRIDE;
virtual void OpenDownload(content::DownloadItem* download) OVERRIDE;
virtual void ShowDownloadInShell(content::DownloadItem* download) OVERRIDE;
virtual void CheckForFileExistence(
content::DownloadItem* download,
const content::CheckForFileExistenceCallback& callback) OVERRIDE;
virtual std::string ApplicationClientIdForFileScanning() const OVERRIDE;
// Opens a download using the platform handler. DownloadItem::OpenDownload,
// which ends up being handled by OpenDownload(), will open a download in the
// browser if doing so is preferred.
void OpenDownloadUsingPlatformHandler(content::DownloadItem* download);
DownloadPrefs* download_prefs() { return download_prefs_.get(); }
protected:
// So that test classes that inherit from this for override purposes
// can call back into the DownloadManager.
content::DownloadManager* download_manager_;
virtual safe_browsing::DownloadProtectionService*
GetDownloadProtectionService();
// DownloadTargetDeterminerDelegate. Protected for testing.
virtual void NotifyExtensions(
content::DownloadItem* download,
const base::FilePath& suggested_virtual_path,
const NotifyExtensionsCallback& callback) OVERRIDE;
virtual void ReserveVirtualPath(
content::DownloadItem* download,
const base::FilePath& virtual_path,
bool create_directory,
DownloadPathReservationTracker::FilenameConflictAction conflict_action,
const ReservedPathCallback& callback) OVERRIDE;
virtual void PromptUserForDownloadPath(
content::DownloadItem* download,
const base::FilePath& suggested_virtual_path,
const FileSelectedCallback& callback) OVERRIDE;
virtual void DetermineLocalPath(
content::DownloadItem* download,
const base::FilePath& virtual_path,
const LocalPathCallback& callback) OVERRIDE;
virtual void CheckDownloadUrl(
content::DownloadItem* download,
const base::FilePath& suggested_virtual_path,
const CheckDownloadUrlCallback& callback) OVERRIDE;
virtual void GetFileMimeType(
const base::FilePath& path,
const GetFileMimeTypeCallback& callback) OVERRIDE;
private:
friend class base::RefCountedThreadSafe<ChromeDownloadManagerDelegate>;
typedef std::vector<content::DownloadIdCallback> IdCallbackVector;
// content::NotificationObserver implementation.
virtual void Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) OVERRIDE;
// Callback function after the DownloadProtectionService completes.
void CheckClientDownloadDone(
uint32 download_id,
safe_browsing::DownloadProtectionService::DownloadCheckResult result);
// Internal gateways for ShouldCompleteDownload().
bool IsDownloadReadyForCompletion(
content::DownloadItem* item,
const base::Closure& internal_complete_callback);
void ShouldCompleteDownloadInternal(
uint32 download_id,
const base::Closure& user_complete_callback);
void SetNextId(uint32 id);
void ReturnNextId(const content::DownloadIdCallback& callback);
void OnDownloadTargetDetermined(
int32 download_id,
const content::DownloadTargetCallback& callback,
scoped_ptr<DownloadTargetInfo> target_info);
Profile* profile_;
uint32 next_download_id_;
IdCallbackVector id_callbacks_;
scoped_ptr<DownloadPrefs> download_prefs_;
#if defined(ENABLE_EXTENSIONS)
// Maps from pending extension installations to DownloadItem IDs.
typedef base::hash_map<extensions::CrxInstaller*,
content::DownloadOpenDelayedCallback> CrxInstallerMap;
CrxInstallerMap crx_installers_;
#endif
content::NotificationRegistrar registrar_;
base::WeakPtrFactory<ChromeDownloadManagerDelegate> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(ChromeDownloadManagerDelegate);
};
#endif // CHROME_BROWSER_DOWNLOAD_CHROME_DOWNLOAD_MANAGER_DELEGATE_H_
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