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/**
* @file llinventorymodelbackgroundfetch.h
* @brief LLInventoryModelBackgroundFetch class header file
*
* $LicenseInfo:firstyear=2002&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#ifndef LL_LLINVENTORYMODELBACKGROUNDFETCH_H
#define LL_LLINVENTORYMODELBACKGROUNDFETCH_H
#include "llsingleton.h"
#include "lluuid.h"
#include "httpcommon.h"
#include "httprequest.h"
#include "httpoptions.h"
#include "httpheaders.h"
#include "httphandler.h"
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Class LLInventoryModelBackgroundFetch
//
// This class handles background fetches, which are fetches of
// inventory folder. Fetches can be recursive or not.
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
class LLInventoryModelBackgroundFetch : public LLSingleton<LLInventoryModelBackgroundFetch>
{
LLSINGLETON(LLInventoryModelBackgroundFetch);
~LLInventoryModelBackgroundFetch();
public:
// Start background breadth-first fetching of inventory contents.
// This gets triggered when performing a filter-search.
void start(const LLUUID& cat_id = LLUUID::null, bool recursive = true);
void scheduleFolderFetch(const LLUUID& cat_id, bool forced = false);
void scheduleItemFetch(const LLUUID& item_id, bool forced = false);
BOOL folderFetchActive() const;
bool isEverythingFetched() const; // completing the fetch once per session should be sufficient
bool libraryFetchStarted() const;
bool libraryFetchCompleted() const;
bool libraryFetchInProgress() const;
bool inventoryFetchStarted() const;
bool inventoryFetchCompleted() const;
bool inventoryFetchInProgress() const;
void findLostItems();
void incrFetchCount(S32 fetching);
void incrFetchFolderCount(S32 fetching);
bool isBulkFetchProcessingComplete() const;
bool isFolderFetchProcessingComplete() const;
void setAllFoldersFetched();
typedef boost::function<void()> folders_fetched_callback_t;
boost::signals2::connection setFetchCompletionCallback(folders_fetched_callback_t cb);
void addRequestAtFront(const LLUUID & id, bool recursive, bool is_category);
void addRequestAtBack(const LLUUID & id, bool recursive, bool is_category);
protected:
typedef enum {
FT_DEFAULT = 0,
FT_FORCED, // request even if already loaded
FT_CONTENT_RECURSIVE, // request content recursively
FT_RECURSIVE, // request everything recursively
} EFetchType;
struct FetchQueueInfo
{
FetchQueueInfo(const LLUUID& id, EFetchType recursive, bool is_category = true)
: mUUID(id),
mIsCategory(is_category),
mFetchType(recursive)
{}
LLUUID mUUID;
bool mIsCategory;
EFetchType mFetchType;
};
typedef std::deque<FetchQueueInfo> fetch_queue_t;
void onAISFolderCalback(const LLUUID &request_id, const LLUUID &response_id, EFetchType recursion);
void bulkFetchViaAis();
void bulkFetchViaAis(const FetchQueueInfo& fetch_info);
void bulkFetch();
void backgroundFetch();
static void backgroundFetchCB(void*); // background fetch idle function
bool fetchQueueContainsNoDescendentsOf(const LLUUID& cat_id) const;
private:
bool mRecursiveInventoryFetchStarted;
bool mRecursiveLibraryFetchStarted;
bool mAllRecursiveFoldersFetched;
typedef boost::signals2::signal<void()> folders_fetched_signal_t;
folders_fetched_signal_t mFoldersFetchedSignal;
bool mBackgroundFetchActive;
bool mFolderFetchActive;
S32 mFetchCount;
S32 mLastFetchCount; // for debug
S32 mFetchFolderCount;
LLFrameTimer mFetchTimer;
F32 mMinTimeBetweenFetches;
fetch_queue_t mFetchFolderQueue;
fetch_queue_t mFetchItemQueue;
std::list<LLUUID> mExpectedFolderIds; // for debug, should this track time?
};
#endif // LL_LLINVENTORYMODELBACKGROUNDFETCH_H
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