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/**
 * @file llwearableitemslist.h
 * @brief A flat list of wearable items.
 *
 * $LicenseInfo:firstyear=2010&license=viewerlgpl$
 * 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_LLWEARABLEITEMSLIST_H
#define LL_LLWEARABLEITEMSLIST_H

// libs
#include "llpanel.h"
#include "llsingleton.h"

// newview
#include "llinventoryitemslist.h"
#include "llinventorylistitem.h"
#include "lllistcontextmenu.h"
#include "llwearabletype.h"

/**
 * @class LLPanelWearableListItem
 *
 * Extends LLPanelInventoryListItemBase:
 * - makes side widgets show on mouse_enter and hide on
 *   mouse_leave events.
 * - provides callback for button clicks
 */
class LLPanelWearableListItem : public LLPanelInventoryListItemBase
{
    LOG_CLASS(LLPanelWearableListItem);
public:

    /**
    * Shows buttons when mouse is over
    */
    /*virtual*/ void onMouseEnter(S32 x, S32 y, MASK mask);

    /**
    * Hides buttons when mouse is out
    */
    /*virtual*/ void onMouseLeave(S32 x, S32 y, MASK mask);

protected:

    LLPanelWearableListItem(LLViewerInventoryItem* item, const Params& params);
};

/**
 * @class LLPanelWearableOutfitItem
 *
 * Outfit item for "My Outfits" list.
 * Extends LLPanelInventoryListItemBase with handling
 * double click to wear the item.
 */
class LLPanelWearableOutfitItem : public LLPanelWearableListItem
{
    LOG_CLASS(LLPanelWearableOutfitItem);
public:
    struct Params : public LLInitParam::Block<Params, LLPanelWearableListItem::Params>
    {
        Optional<LLButton::Params>   add_btn, remove_btn;

        Params();
    };

    bool postBuild();
    bool handleDoubleClick(S32 x, S32 y, MASK mask);

    static LLPanelWearableOutfitItem* create(LLViewerInventoryItem* item,
                                             bool worn_indication_enabled,
                                             bool show_widgets);

    /**
     * Updates item name and (worn) suffix.
     */
    /*virtual*/ void updateItem(const std::string& name,
                                EItemState item_state = IS_DEFAULT);

    void onAddWearable();
    void onRemoveWearable();

protected:
    LLPanelWearableOutfitItem(LLViewerInventoryItem* item,
                              bool worn_indication_enabled, const Params& params, bool show_widgets = false);

private:
    bool    mWornIndicationEnabled;
    bool mShowWidgets;
};

class LLPanelDeletableWearableListItem : public LLPanelWearableListItem
{
    LOG_CLASS(LLPanelDeletableWearableListItem);
public:
    struct Params : public LLInitParam::Block<Params, LLPanelWearableListItem::Params>
    {
        Optional<LLButton::Params>      delete_btn;

        Params();
    };


    static LLPanelDeletableWearableListItem* create(LLViewerInventoryItem* item);

    virtual ~LLPanelDeletableWearableListItem() {};

    /*virtual*/ bool postBuild();

    /**
     * Make button visible during mouse over event.
     */
    inline void setShowDeleteButton(bool show) { setShowWidget("btn_delete", show); }

protected:
    LLPanelDeletableWearableListItem(LLViewerInventoryItem* item, const Params& params);
};

/** Outfit list item for an attachment */
class LLPanelAttachmentListItem : public LLPanelDeletableWearableListItem
{
    LOG_CLASS(LLPanelAttachmentListItem);
public:
    static LLPanelAttachmentListItem* create(LLViewerInventoryItem* item);
    virtual ~LLPanelAttachmentListItem() {};

    /** Set item title. Joint name is added to the title in parenthesis */
    /*virtual*/ void updateItem(const std::string& name,
                                EItemState item_state = IS_DEFAULT);

protected:
    LLPanelAttachmentListItem(LLViewerInventoryItem* item, const Params& params) : LLPanelDeletableWearableListItem(item, params) {};
};

/**
 * @class LLPanelClothingListItem
 *
 * Provides buttons for editing, moving, deleting a wearable.
 */
class LLPanelClothingListItem : public LLPanelDeletableWearableListItem
{
    LOG_CLASS(LLPanelClothingListItem);
public:

    struct Params : public LLInitParam::Block<Params, LLPanelDeletableWearableListItem::Params>
    {
        Optional<LLButton::Params>      up_btn,
                                        down_btn,
                                        edit_btn;
        Optional<LLPanel::Params>       lock_panel,
                                        edit_panel;
        Optional<LLIconCtrl::Params>    lock_icon;

        Params();
    };

    static LLPanelClothingListItem* create(LLViewerInventoryItem* item);

    virtual ~LLPanelClothingListItem();

    /*virtual*/ bool postBuild();

    /**
     * Make button visible during mouse over event.
     */
    inline void setShowMoveUpButton(bool show) { setShowWidget("btn_move_up", show); }

    inline void setShowMoveDownButton(bool show) { setShowWidget("btn_move_down", show); }
    inline void setShowLockButton(bool show) { setShowWidget("btn_lock", show); }
    inline void setShowEditButton(bool show) { setShowWidget("btn_edit_panel", show); }

protected:

    LLPanelClothingListItem(LLViewerInventoryItem* item, const Params& params);

};

class LLPanelBodyPartsListItem : public LLPanelWearableListItem
{
    LOG_CLASS(LLPanelBodyPartsListItem);
public:
    struct Params : public LLInitParam::Block<Params, LLPanelWearableListItem::Params>
    {
        Optional<LLButton::Params>      edit_btn;
        Optional<LLPanel::Params>       lock_panel,
                                        edit_panel;
        Optional<LLIconCtrl::Params>    lock_icon;

        Params();
    };

    static LLPanelBodyPartsListItem* create(LLViewerInventoryItem* item);

    virtual ~LLPanelBodyPartsListItem();

    /*virtual*/ bool postBuild();

    /**
    * Make button visible during mouse over event.
    */
    inline void setShowLockButton(bool show) { setShowWidget("btn_lock", show); }
    inline void setShowEditButton(bool show) { setShowWidget("btn_edit_panel", show); }

protected:
    LLPanelBodyPartsListItem(LLViewerInventoryItem* item, const Params& params);
};


/**
 * @class LLPanelDummyClothingListItem
 *
 * A dummy item panel - displays grayed clothing icon, grayed title '<clothing> not worn' and 'add' button
 */
class LLPanelDummyClothingListItem : public LLPanelWearableListItem
{
public:
    struct Params : public LLInitParam::Block<Params, LLPanelWearableListItem::Params>
    {
        Optional<LLPanel::Params> add_panel;
        Optional<LLButton::Params> add_btn;
        Params();
    };
    static LLPanelDummyClothingListItem* create(LLWearableType::EType w_type);

    /*virtual*/ bool postBuild();
    LLWearableType::EType getWearableType() const;

protected:
    LLPanelDummyClothingListItem(LLWearableType::EType w_type, const Params& params);

    static std::string wearableTypeToString(LLWearableType::EType w_type);

private:
    LLWearableType::EType mWearableType;
};

/**
 * @class LLWearableListItemComparator
 *
 * Abstract comparator of wearable list items.
 */
class LLWearableListItemComparator : public LLFlatListView::ItemComparator
{
    LOG_CLASS(LLWearableListItemComparator);

public:
    LLWearableListItemComparator() {};
    virtual ~LLWearableListItemComparator() {};

    virtual bool compare(const LLPanel* item1, const LLPanel* item2) const
    {
        const LLPanelInventoryListItemBase* wearable_item1 = dynamic_cast<const LLPanelInventoryListItemBase*>(item1);
        const LLPanelInventoryListItemBase* wearable_item2 = dynamic_cast<const LLPanelInventoryListItemBase*>(item2);

        if (!wearable_item1 || !wearable_item2)
        {
            LL_WARNS() << "item1 and item2 cannot be null" << LL_ENDL;
            return true;
        }

        return doCompare(wearable_item1, wearable_item2);
    }

protected:

    /**
     * Returns true if wearable_item1 < wearable_item2, false otherwise
     * Implement this method in your particular comparator.
     */
    virtual bool doCompare(const LLPanelInventoryListItemBase* wearable_item1, const LLPanelInventoryListItemBase* wearable_item2) const = 0;
};

/**
 * @class LLWearableItemNameComparator
 *
 * Comparator for sorting wearable list items by name.
 */
class LLWearableItemNameComparator : public LLWearableListItemComparator
{
    LOG_CLASS(LLWearableItemNameComparator);

public:
    LLWearableItemNameComparator() {};
    virtual ~LLWearableItemNameComparator() {};

protected:
    /*virtual*/ bool doCompare(const LLPanelInventoryListItemBase* wearable_item1, const LLPanelInventoryListItemBase* wearable_item2) const;
};

/**
 * @class LLWearableItemTypeNameComparator
 *
 * Comparator for sorting wearable list items by type and name.
 */
class LLWearableItemTypeNameComparator : public LLWearableItemNameComparator
{
    LOG_CLASS(LLWearableItemTypeNameComparator);

public:

    LLWearableItemTypeNameComparator();
    virtual ~LLWearableItemTypeNameComparator() {};

    enum ETypeListOrder
    {
        ORDER_RANK_1 = 1,
        ORDER_RANK_2,
        ORDER_RANK_3,
        ORDER_RANK_4,
        ORDER_RANK_UNKNOWN
    };

    void setOrder(LLAssetType::EType items_of_type, ETypeListOrder order_priority, bool sort_items_by_name, bool sort_wearable_items_by_name);

protected:
    /**
     * All information about sort order is stored in mWearableOrder map
     *
     * mWearableOrder :      KEYS              VALUES
     *                  [LLAssetType] [struct LLWearableTypeOrder]
     *
     *---------------------------------------------------------------------------------------------
     * I. Determines order (ORDER_RANK) in which items of LLAssetType should be displayed in list.
     *     For example by spec in MY OUTFITS the order is:
     *     1. AT_CLOTHING (ORDER_RANK_1)
     *     2. AT_OBJECT   (ORDER_RANK_2)
     *     3. AT_BODYPART (ORDER_RANK_3)
     *
     * II.Items of each type(LLAssetType) are sorted by name or type(LLWearableType)
     *     For example by spec in MY OUTFITS the order within each items type(LLAssetType) is:
     *     1. AT_OBJECTS (abc order)
     *     2. AT_CLOTHINGS
     *         - by type (types order determined in LLWearableType::EType)
     *         - outer layer on top
     *     3. AT_BODYPARTS  (abc order)
     *---------------------------------------------------------------------------------------------
     *
     * For each LLAssetType (KEYS in mWearableOrder) the information about:
     *
     *                                             I.  ORDER_RANK (the flag is LLWearableTypeOrder::mOrderPriority)
     *
     *                                             II. whether items of this LLAssetType type should be ordered
     *                                                 by name or by LLWearableType::EType (the flag is LLWearableTypeOrder::mSortAssetTypeByName)
     *
     *                                             III.whether items of LLWearableType type within this LLAssetType
     *                                                 should be ordered by name (the flag is LLWearableTypeOrder::mSortWearableTypeByName)
     *
     *  holds in mWearableOrder map as VALUES (struct LLWearableTypeOrder).
     */
    /*virtual*/ bool doCompare(const LLPanelInventoryListItemBase* wearable_item1, const LLPanelInventoryListItemBase* wearable_item2) const;

private:

    struct LLWearableTypeOrder
    {
        ETypeListOrder mOrderPriority;
        bool mSortAssetTypeByName;
        bool mSortWearableTypeByName;

        LLWearableTypeOrder(ETypeListOrder order_priority, bool sort_asset_by_name, bool sort_wearable_by_name);
    LLWearableTypeOrder() : mOrderPriority(ORDER_RANK_UNKNOWN), mSortAssetTypeByName(false), mSortWearableTypeByName(false) {};
    };

    ETypeListOrder getTypeListOrder(LLAssetType::EType item_type) const;

    bool sortAssetTypeByName(LLAssetType::EType item_type) const;
    bool sortWearableTypeByName(LLAssetType::EType item_type) const;

    typedef std::map<LLAssetType::EType,LLWearableTypeOrder> wearable_type_order_map_t;
    wearable_type_order_map_t mWearableOrder;
};

/**
 * @class LLWearableItemCreationDateComparator
 *
 * Comparator for sorting wearable list items by creation date (newest go first).
 */
class LLWearableItemCreationDateComparator : public LLWearableItemNameComparator
{
    LOG_CLASS(LLWearableItemCreationDateComparator);

public:
    // clang demands a default ctor here
    LLWearableItemCreationDateComparator() {}

protected:
    /*virtual*/ bool doCompare(const LLPanelInventoryListItemBase* item1, const LLPanelInventoryListItemBase* item2) const;
};

/**
 * @class LLWearableItemsList
 *
 * A flat list of wearable inventory items.
 * Collects all items that can be a part of an outfit from
 * an inventory category specified by UUID and displays them
 * as a flat list.
 */
class LLWearableItemsList : public LLInventoryItemsList
{
public:
    /**
     * Context menu.
     *
     * This menu is likely to be used from outside
     * (e.g. for items selected across multiple wearable lists),
     * so making it a singleton.
     */
    class ContextMenu : public LLListContextMenu, public LLSingleton<ContextMenu>
    {
        LLSINGLETON(ContextMenu);
    public:
        /*virtual*/ void show(LLView* spawning_view, const uuid_vec_t& uuids, S32 x, S32 y) override;

        void show(LLView* spawning_view, LLWearableType::EType w_type, S32 x, S32 y);

    protected:
        enum {
            MASK_CLOTHING       = 0x01,
            MASK_BODYPART       = 0x02,
            MASK_ATTACHMENT     = 0x04,
            MASK_GESTURE        = 0x08,
            MASK_UNKNOWN        = 0x10,
        };

        /* virtual */ LLContextMenu* createMenu() override;
        void updateItemsVisibility(LLContextMenu* menu);
        void updateItemsLabels(LLContextMenu* menu);
        static void setMenuItemVisible(LLContextMenu* menu, const std::string& name, bool val);
        static void setMenuItemEnabled(LLContextMenu* menu, const std::string& name, bool val);
        static void updateMask(U32& mask, LLAssetType::EType at);
        static void createNewWearable(const LLUUID& item_id);
        static void createNewWearableByType(LLWearableType::EType type);

        LLWearableItemsList*    mParent;
    };

    struct Params : public LLInitParam::Block<Params, LLInventoryItemsList::Params>
    {
        Optional<bool> standalone;
        Optional<bool> worn_indication_enabled;
        Optional<bool> show_item_widgets;

        Params();
    };

    typedef enum e_sort_order {
        // Values should be compatible with InventorySortOrder setting.
        E_SORT_BY_NAME          = 0,
        E_SORT_BY_MOST_RECENT   = 1,
        E_SORT_BY_TYPE_LAYER    = 2,
        E_SORT_BY_TYPE_NAME     = 3,
    } ESortOrder;

    virtual ~LLWearableItemsList();

    /*virtual*/ LLPanel* createNewItem(LLViewerInventoryItem* item) override;

    void updateList(const LLUUID& category_id);

    /**
     * Update items that match UUIDs from changed_items_uuids
     * or links that point at such items.
     */
    void updateChangedItems(const uuid_vec_t& changed_items_uuids);

    bool isStandalone() const { return mIsStandalone; }

    ESortOrder getSortOrder() const { return mSortOrder; }

    void setSortOrder(ESortOrder sort_order, bool sort_now = true);

    void setMenuWearableType(LLWearableType::EType type) { mMenuWearableType = type; }

protected:
    friend class LLUICtrlFactory;
    LLWearableItemsList(const LLWearableItemsList::Params& p);

    void onRightClick(S32 x, S32 y);

    bool mIsStandalone;
    bool mWornIndicationEnabled;
    bool mShowItemWidgets;

    ESortOrder      mSortOrder;

    LLWearableType::EType mMenuWearableType;
};

#endif //LL_LLWEARABLEITEMSLIST_H