/**
 * @file llinventorypanel.h
 * @brief LLInventoryPanel
 * class definition
 *
 * $LicenseInfo:firstyear=2001&license=viewerlgpl$
 * 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_LLINVENTORYPANEL_H
#define LL_LLINVENTORYPANEL_H

#include "llassetstorage.h"
#include "llfolderviewitem.h"
#include "llfolderviewmodelinventory.h"
#include "llfloater.h"
#include "llinventory.h"
#include "llinventoryfilter.h"
#include "llinventorymodel.h"
#include "llscrollcontainer.h"
#include "lluictrlfactory.h"
#include <set>

class LLInvFVBridge;
class LLInventoryFolderViewModelBuilder;
class LLInvPanelComplObserver;
class LLFolderViewModelInventory;
class LLFolderViewGroupedItemBridge;

namespace LLInitParam
{
    template<>
    struct TypeValues<LLFolderType::EType> : public TypeValuesHelper<LLFolderType::EType>
    {
        static void declareValues();
    };
}

class LLInventoryPanel : public LLPanel
{
    //--------------------------------------------------------------------
    // Data
    //--------------------------------------------------------------------
public:
    struct Filter : public LLInitParam::Block<Filter>
    {
        Optional<U32>           sort_order;
        Optional<U32>           types;
        Optional<std::string>   search_string;

        Filter()
        :   sort_order("sort_order"),
            types("types", 0xffffffff),
            search_string("search_string")
        {}
    };

    struct StartFolder : public LLInitParam::ChoiceBlock<StartFolder>
    {
        Alternative<std::string>            name;
        Alternative<LLUUID>                 id;
        Alternative<LLFolderType::EType>    type;

        StartFolder()
        :   name("name"),
            id("id"),
            type("type")
        {}
    };

    struct Params
    :   public LLInitParam::Block<Params, LLPanel::Params>
    {
        Optional<std::string>               sort_order_setting;
        Optional<LLInventoryModel*>         inventory;
        Optional<bool>                      allow_multi_select;
        Optional<bool>                      allow_drag;
        Optional<bool>                      show_item_link_overlays;
        Optional<Filter>                    filter;
        Optional<StartFolder>               start_folder;
        Optional<bool>                      use_label_suffix;
        Optional<bool>                      show_empty_message;
        Optional<bool>                      suppress_folder_menu;
        Optional<bool>                      show_root_folder;
        Optional<bool>                      allow_drop_on_root;
        Optional<bool>                      use_marketplace_folders;
        Optional<LLScrollContainer::Params> scroll;
        Optional<bool>                      accepts_drag_and_drop;
        Optional<LLFolderView::Params>      folder_view;
        Optional<LLFolderViewFolder::Params> folder;
        Optional<LLFolderViewItem::Params>   item;
        Optional<bool>                       open_first_folder;

        // All item and folder views will be initialized on init if true (default)
        // Will initialize on visibility change otherwise.
        Optional<bool>                      preinitialize_views;

        Params()
        :   sort_order_setting("sort_order_setting"),
            inventory("", &gInventory),
            allow_multi_select("allow_multi_select", true),
            allow_drag("allow_drag", true),
            show_item_link_overlays("show_item_link_overlays", false),
            suppress_folder_menu("suppress_folder_menu", false),
            filter("filter"),
            start_folder("start_folder"),
            use_label_suffix("use_label_suffix", true),
            show_empty_message("show_empty_message", true),
            show_root_folder("show_root_folder", false),
            allow_drop_on_root("allow_drop_on_root", true),
            use_marketplace_folders("use_marketplace_folders", false),
            open_first_folder("open_first_folder", true),
            scroll("scroll"),
            accepts_drag_and_drop("accepts_drag_and_drop"),
            folder_view("folder_view"),
            folder("folder"),
            item("item"),
            preinitialize_views("preinitialize_views", true)
        {}
    };

    struct InventoryState : public LLInitParam::Block<InventoryState>
    {
        Mandatory<LLInventoryFilter::Params> filter;
        Mandatory<LLInventorySort::Params> sort;
    };

    //--------------------------------------------------------------------
    // Initialization
    //--------------------------------------------------------------------
protected:
    LLInventoryPanel(const Params&);
    void initFromParams(const Params&);

    friend class LLUICtrlFactory;
public:
    virtual ~LLInventoryPanel();

public:
    typedef std::set<LLFolderViewItem*> selected_items_t;

    LLInventoryModel* getModel() { return mInventory; }
    LLFolderViewModelInventory& getRootViewModel() { return mInventoryViewModel; }

    // LLView methods
    /*virtual*/ void onVisibilityChange(bool new_visibility) override;
    void draw() override;
    /*virtual*/ bool handleKeyHere( KEY key, MASK mask ) override;
    bool handleHover(S32 x, S32 y, MASK mask) override;
    /*virtual*/ bool handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                                   EDragAndDropType cargo_type,
                                   void* cargo_data,
                                   EAcceptance* accept,
                                   std::string& tooltip_msg) override;
                bool handleToolTip(S32 x, S32 y, MASK mask) override;
    // LLUICtrl methods
     /*virtual*/ void onFocusLost() override;
     /*virtual*/ void onFocusReceived() override;
     void onFolderOpening(const LLUUID &id);

    // LLBadgeHolder methods
    bool addBadge(LLBadge * badge) override;

    // Call this method to set the selection.
    void openAllFolders();
    void setSelection(const LLUUID& obj_id, bool take_keyboard_focus);
    void setSelectCallback(const boost::function<void (const std::deque<LLFolderViewItem*>& items, bool user_action)>& cb);
    void clearSelection();
    selected_items_t getSelectedItems() const;

    bool isSelectionRemovable();
    LLInventoryFilter& getFilter();
    const LLInventoryFilter& getFilter() const;
    void setFilterTypes(U64 filter, LLInventoryFilter::EFilterType = LLInventoryFilter::FILTERTYPE_OBJECT);
    void setFilterWorn();
    U32 getFilterObjectTypes() const;
    void setFilterPermMask(PermissionMask filter_perm_mask);
    U32 getFilterPermMask() const;
    void setFilterWearableTypes(U64 filter);
    void setFilterSettingsTypes(U64 filter);
    void setFilterSubString(const std::string& string);
    const std::string getFilterSubString();
    void setSinceLogoff(bool sl);
    void setHoursAgo(U32 hours);
    void setDateSearchDirection(U32 direction);
    bool getSinceLogoff();
    void setFilterLinks(U64 filter_links);
    void setSearchType(LLInventoryFilter::ESearchType type);
    LLInventoryFilter::ESearchType getSearchType();

    void setShowFolderState(LLInventoryFilter::EFolderShow show);
    LLInventoryFilter::EFolderShow getShowFolderState();
    // This method is called when something has changed about the inventory.
    void modelChanged(U32 mask);
    LLFolderView* getRootFolder() { return mFolderRoot.get(); }
    LLUUID getRootFolderID();
    LLScrollContainer* getScrollableContainer() { return mScroller; }
    bool getAllowDropOnRoot() { return mParams.allow_drop_on_root; }
    bool areViewsInitialized() { return mViewsInitialized == VIEWS_INITIALIZED && mFolderRoot.get() && !mFolderRoot.get()->needsArrange(); }

    void onSelectionChange(const std::deque<LLFolderViewItem*> &items, bool user_action);

    LLHandle<LLInventoryPanel> getInventoryPanelHandle() const { return getDerivedHandle<LLInventoryPanel>(); }

    // Callbacks
    void doToSelected(const LLSD& userdata);
    void doCreate(const LLSD& userdata);
    bool beginIMSession();
    void fileUploadLocation(const LLSD& userdata);
    void openSingleViewInventory(LLUUID folder_id = LLUUID());
    void purgeSelectedItems();
    bool attachObject(const LLSD& userdata);
    static void idle(void* user_data);

    void updateFolderLabel(const LLUUID& folder_id);

    // DEBUG ONLY:
    static void dumpSelectionInformation(void* user_data);

    void openSelected();
    void unSelectAll();

    static void onIdle(void* user_data);

    // Find whichever inventory panel is active / on top.
    // "Auto_open" determines if we open an inventory panel if none are open.
    static LLInventoryPanel *getActiveInventoryPanel(bool auto_open = true);

    static void openInventoryPanelAndSetSelection(bool auto_open,
                                                    const LLUUID& obj_id,
                                                    bool use_main_panel = false,
                                                    bool take_keyboard_focus = true,
                                                    bool reset_filter = false);
    static void setSFViewAndOpenFolder(const LLInventoryPanel* panel, const LLUUID& folder_id);
    void addItemID(const LLUUID& id, LLFolderViewItem* itemp);
    void removeItemID(const LLUUID& id);
    LLFolderViewItem* getItemByID(const LLUUID& id);
    LLFolderViewFolder* getFolderByID(const LLUUID& id);
    void setSelectionByID(const LLUUID& obj_id, bool take_keyboard_focus);
    void updateSelection();

    void setSuppressOpenItemAction(bool supress_open_item) { mSuppressOpenItemAction = supress_open_item; }

    LLFolderViewModelInventory* getFolderViewModel() { return &mInventoryViewModel; }
    const LLFolderViewModelInventory* getFolderViewModel() const { return &mInventoryViewModel; }

    // Clean up stuff when the folder root gets deleted
    void clearFolderRoot();

    static void callbackPurgeSelectedItems(const LLSD& notification, const LLSD& response, const std::vector<LLUUID> inventory_selected);

    void changeFolderRoot(const LLUUID& new_id) {};
    void initFolderRoot();
    void initializeViewBuilding();

protected:
    void openStartFolderOrMyInventory(); // open the first level of inventory
    void onItemsCompletion();           // called when selected items are complete

    LLUUID                      mSelectThisID;
    LLInventoryModel*           mInventory;
    LLInventoryObserver*        mInventoryObserver;
    LLInvPanelComplObserver*    mCompletionObserver;
    bool                        mFocusSelection;
    bool                        mAcceptsDragAndDrop;
    bool                        mAllowMultiSelect;
    bool                        mAllowDrag;
    bool                        mShowItemLinkOverlays; // Shows link graphic over inventory item icons
    bool                        mShowEmptyMessage;
    bool                        mSuppressFolderMenu;
    bool                        mSuppressOpenItemAction;

    LLHandle<LLFolderView>      mFolderRoot;
    LLScrollContainer*          mScroller;

    LLUUID                      mPreviousSelectedFolder;

    LLFolderViewModelInventory  mInventoryViewModel;
    LLPointer<LLFolderViewGroupedItemBridge> mGroupedItemBridge;
    Params                      mParams;    // stored copy of parameter block

    std::map<LLUUID, LLFolderViewItem*> mItemMap;
    /**
     * Pointer to LLInventoryFolderViewModelBuilder.
     *
     * It is set in LLInventoryPanel's constructor and can be overridden in derived classes with
     * another implementation.
     * Take into account it will not be deleted by LLInventoryPanel itself.
     */
    const LLInventoryFolderViewModelBuilder* mInvFVBridgeBuilder;

    bool mBuildChildrenViews; // build root and children
    bool mRootInited;


    //--------------------------------------------------------------------
    // Sorting
    //--------------------------------------------------------------------
public:
    static const std::string DEFAULT_SORT_ORDER;
    static const std::string RECENTITEMS_SORT_ORDER;
    static const std::string INHERIT_SORT_ORDER;

    void setSortOrder(U32 order);
    U32 getSortOrder() const;

private:
    std::string                 mSortOrderSetting;
    int                         mClipboardState;

    //--------------------------------------------------------------------
    // Hidden folders
    //--------------------------------------------------------------------
public:
    void addHideFolderType(LLFolderType::EType folder_type);
protected:
    // Builds the UI.  Call this once the inventory is usable.
    void                initializeViews(F64 max_time);

    // Specific inventory colors
    static bool                 sColorSetInitialized;
    static LLUIColor            sDefaultColor;
    static LLUIColor            sDefaultHighlightColor;
    static LLUIColor            sLibraryColor;
    static LLUIColor            sLinkColor;

    enum EBuildModes
    {
        BUILD_NO_LIMIT,
        BUILD_TIMELIMIT, // requires mBuildViewsEndTime
        BUILD_ONE_FOLDER,
        BUILD_NO_CHILDREN,
    };

    // All buildNewViews() use BUILD_TIMELIMIT by default
    // and expect time limit mBuildViewsEndTime to be set
    LLFolderViewItem*           buildNewViews(const LLUUID& id);
    LLFolderViewItem*           buildNewViews(const LLUUID& id,
                                              LLInventoryObject const* objectp);
    LLFolderViewItem*           buildNewViews(const LLUUID& id,
                                              LLInventoryObject const* objectp,
                                              LLFolderViewItem *target_view,
                                              const EBuildModes &mode = BUILD_TIMELIMIT);

    // if certain types are not allowed, no reason to create views
    virtual bool                typedViewsFilter(const LLUUID& id, LLInventoryObject const* objectp) { return true; }

    virtual void                itemChanged(const LLUUID& item_id, U32 mask, const LLInventoryObject* model_item);
    bool                getIsHiddenFolderType(LLFolderType::EType folder_type) const;

    virtual LLFolderView * createFolderRoot(LLUUID root_id );
    virtual LLFolderViewFolder* createFolderViewFolder(LLInvFVBridge * bridge, bool allow_drop);
    virtual LLFolderViewItem*   createFolderViewItem(LLInvFVBridge * bridge);

    boost::function<void(const std::deque<LLFolderViewItem*>& items, bool user_action)> mSelectionCallback;
private:
    // buildViewsTree does not include some checks and is meant
    // for recursive use, use buildNewViews() for first call
    LLFolderViewItem*           buildViewsTree(const LLUUID& id,
                                              const LLUUID& parent_id,
                                              LLInventoryObject const* objectp,
                                              LLFolderViewItem *target_view,
                                              LLFolderViewFolder *parent_folder_view,
                                              const EBuildModes &mode,
                                              S32 depth = -1);

    typedef enum e_views_initialization_state
    {
        VIEWS_UNINITIALIZED = 0,
        VIEWS_INITIALIZING,
        VIEWS_BUILDING, // Root folder exists
        VIEWS_INITIALIZED,
    } EViewsInitializationState;

    bool                        mBuildViewsOnInit;
    EViewsInitializationState   mViewsInitialized; // Whether views have been generated
    F64                         mBuildViewsEndTime; // Stop building views past this timestamp
    std::deque<LLUUID>          mBuildViewsQueue;
};


class LLInventorySingleFolderPanel : public LLInventoryPanel
{
public:
    struct Params : public LLInitParam::Block<Params, LLInventoryPanel::Params>
    {};

    void initFromParams(const Params& p);
    void onFocusReceived() override;

    bool isSelectionRemovable() { return false; }

    void initFolderRoot(const LLUUID& start_folder_id = LLUUID::null);

    void changeFolderRoot(const LLUUID& new_id);
    void onForwardFolder();
    void onBackwardFolder();
    void clearNavigationHistory();
    LLUUID getSingleFolderRoot() { return mFolderID; }

    void doCreate(const LLSD& userdata);
    void doToSelected(const LLSD& userdata);
    void doShare();

    bool isBackwardAvailable() const;
    bool isForwardAvailable() const;

    bool hasVisibleItems() const;

    void setNavBackwardList(std::list<LLUUID> backward_list) { mBackwardFolders = backward_list; }
    void setNavForwardList(std::list<LLUUID> forward_list) { mForwardFolders = forward_list; }
    std::list<LLUUID> getNavBackwardList() { return mBackwardFolders; }
    std::list<LLUUID> getNavForwardList() { return mForwardFolders; }

    typedef boost::function<void()> root_changed_callback_t;
    boost::signals2::connection setRootChangedCallback(root_changed_callback_t cb);

protected:
    LLInventorySingleFolderPanel(const Params& params);
    ~LLInventorySingleFolderPanel();
    void updateSingleFolderRoot();

    friend class LLUICtrlFactory;

    LLUUID mFolderID;
    std::list<LLUUID> mBackwardFolders;
    std::list<LLUUID> mForwardFolders;

    boost::signals2::signal<void()> mRootChangedSignal;
};

/************************************************************************/
/* Asset Pre-Filtered Inventory Panel related class                     */
/* Exchanges filter's flexibility for speed of generation and           */
/* improved performance                                                 */
/************************************************************************/

class LLAssetFilteredInventoryPanel : public LLInventoryPanel
{
public:
    struct Params
        : public LLInitParam::Block<Params, LLInventoryPanel::Params>
    {
        Mandatory<std::string>  filter_asset_types;

        Params() : filter_asset_types("filter_asset_types") {}
    };

    void initFromParams(const Params& p);
protected:
    LLAssetFilteredInventoryPanel(const Params& p);
    friend class LLUICtrlFactory;
public:
    ~LLAssetFilteredInventoryPanel() {}

    /*virtual*/ bool handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
        EDragAndDropType cargo_type,
        void* cargo_data,
        EAcceptance* accept,
        std::string& tooltip_msg) override;

protected:
    /*virtual*/ bool                typedViewsFilter(const LLUUID& id, LLInventoryObject const* objectp) override;
    /*virtual*/ void                itemChanged(const LLUUID& item_id, U32 mask, const LLInventoryObject* model_item) override;

private:
    bool mAssetTypes[LLAssetType::AT_COUNT];
    bool mDragTypes[EDragAndDropType::DAD_COUNT];
};

#endif // LL_LLINVENTORYPANEL_H