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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"
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Class LLInventoryModelBackgroundFetch
//
// This class handles background fetches, which are fetches of
// inventory folder. Fetches can be recursive or not.
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
class LLInventoryModelBackgroundFetch : public LLSingleton<LLInventoryModelBackgroundFetch>
{
friend class LLInventoryModelFetchDescendentsResponder;
public:
LLInventoryModelBackgroundFetch();
~LLInventoryModelBackgroundFetch();
// Start and stop 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);
BOOL backgroundFetchActive() 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(S16 fetching);
protected:
bool isBulkFetchProcessingComplete() const;
void bulkFetch();
void backgroundFetch();
static void backgroundFetchCB(void*); // background fetch idle function
void stopBackgroundFetch(); // stop fetch process
void setAllFoldersFetched();
bool fetchQueueContainsNoDescendentsOf(const LLUUID& cat_id) const;
private:
BOOL mRecursiveInventoryFetchStarted;
BOOL mRecursiveLibraryFetchStarted;
BOOL mAllFoldersFetched;
BOOL mBackgroundFetchActive;
S16 mFetchCount;
BOOL mTimelyFetchPending;
S32 mNumFetchRetries;
LLFrameTimer mFetchTimer;
F32 mMinTimeBetweenFetches;
F32 mMaxTimeBetweenFetches;
struct FetchQueueInfo
{
FetchQueueInfo(const LLUUID& id, BOOL recursive, bool is_category = true) :
mUUID(id), mRecursive(recursive), mIsCategory(is_category)
{}
LLUUID mUUID;
bool mIsCategory;
BOOL mRecursive;
};
typedef std::deque<FetchQueueInfo> fetch_queue_t;
fetch_queue_t mFetchQueue;
};
#endif // LL_LLINVENTORYMODELBACKGROUNDFETCH_H
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