containerwithcargoandattachments.c

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class ContainerWithCargoAndAttachments extends ClosableContainer
{
    protected ref Attachments                               m_Atts;
    protected ref CargoContainer                            m_CargoGrid;
    
    protected ref map<EntityAI, ref CargoContainer>         m_AttachmentCargos;
    protected ref map<EntityAI, ref AttachmentsWrapper>     m_AttachmentAttachmentsContainers;
    protected ref map<EntityAI, ref Attachments>            m_AttachmentAttachments;
    protected ref array<int>                                m_AttachmentSlotsSorted;
    
    void ContainerWithCargoAndAttachments( LayoutHolder parent, int sort = -1 )
    {
        WidgetEventHandler.GetInstance().RegisterOnDraggingOver( m_MainWidget,  this, "DraggingOverHeader2" );
    }
 
    void ~ContainerWithCargoAndAttachments()
    {
        if ( m_Entity )
        {
            m_Entity.GetOnItemAttached().Remove( AttachmentAdded );
            m_Entity.GetOnItemDetached().Remove( AttachmentRemoved );
        }
        
        if ( m_Atts )
            delete m_Atts;
        
        foreach ( EntityAI e, Attachments att : m_AttachmentAttachments )
        {
            delete att;
        }
        
        if ( m_AttachmentAttachments )
            m_AttachmentAttachments.Clear();
        
        if ( m_AttachmentAttachmentsContainers )
            m_AttachmentAttachmentsContainers.Clear();
        
        if ( m_AttachmentCargos )
            m_AttachmentCargos.Clear();
    }
    
    void RecomputeContainers()
    {
        m_Body.Clear();
 
        if(m_Atts)
        {
            m_Body.Insert(m_Atts.GetWrapper());
        }
 
        if(m_CargoGrid)
        {
            m_Body.Insert(m_CargoGrid);
        }
        
        GameInventory inv = m_Entity.GetInventory();
        for (int i = 0; i < inv.AttachmentCount(); i++)
        {
            EntityAI ent = inv.GetAttachmentFromIndex(i);
            if(ent)
            {
                AttachmentsWrapper att = m_AttachmentAttachmentsContainers.Get(ent);
                if(att)
                {
                    m_Body.Insert(att);
                }
                
                CargoContainer cargo = m_AttachmentCargos.Get(ent);
                if(cargo)
                {
                    m_Body.Insert(cargo);
                }
            }
        }
    }
    
    void AttachmentAddedEx(EntityAI item, string slot, EntityAI parent, bool immedUpdate = true)
    {
        int slot_id = InventorySlots.GetSlotIdFromString( slot );
        int sort = -1;
        bool updateNeeded = false;
        ref Attachments att_cont = null;
        ref CargoContainer cont = null;
        
        if ( item.GetInventory().GetAttachmentSlotsCount() > 0 && item.CanDisplayAnyAttachmentSlot() )
        {
            updateNeeded = true;
            
            att_cont = new Attachments( this, item );
            sort = (m_AttachmentSlotsSorted.Find( slot_id ) * 2) + SORT_ATTACHMENTS_NEXT_OFFSET;
            att_cont.InitAttachmentGrid( sort );
            
            m_AttachmentAttachments.Insert( item, att_cont );
            m_AttachmentAttachmentsContainers.Insert( item, att_cont.GetWrapper() );
            
            att_cont.UpdateInterval();
        }
        
        if ( item.GetInventory().GetCargo() )
        {
            updateNeeded = true;
            
            cont = new CargoContainer( this, true );
            sort = (m_AttachmentSlotsSorted.Find( slot_id ) * 2) + SORT_CARGO_NEXT_OFFSET;
            cont.GetRootWidget().SetSort( sort );
            cont.SetEntity( item, false );
            Insert( cont, m_Atts.GetAttachmentHeight() + m_AttachmentCargos.Count() + 1 );
            
            m_AttachmentCargos.Insert( item, cont );
        }
        
        if (updateNeeded)
        {
            if (att_cont)
            {
                att_cont.ShowFalseAttachmentsHeader(true);
                if (cont)
                {
                    cont.ShowFalseCargoHeader(false);
                    cont.UpdateSize();
                    cont.SetAlternateFalseTextHeaderWidget(att_cont.GetFalseHeaderTextWidget());
                }
            }
            else if (cont)
            {
                cont.SetAlternateFalseTextHeaderWidget(null); //just to be safe..
            }
            
            RecomputeContainers();
            RecomputeOpenedContainers();
            
            Inventory.GetInstance().UpdateConsoleToolbar();
            
            if (m_Parent && immedUpdate)
                m_Parent.Refresh();
        }
    }
    
    void AttachmentAdded(EntityAI item, string slot, EntityAI parent)
    {
        AttachmentAddedEx(item, slot, parent);
    }
    
    void AttachmentRemoved(EntityAI item, string slot, EntityAI parent)
    {
        int slot_id = InventorySlots.GetSlotIdFromString( slot );
        
        CargoContainer old_cont = m_AttachmentCargos.Get( item );
        if( old_cont )
        {
            m_AttachmentCargos.Remove( item );
            delete old_cont;
            
            if( m_Parent )
                m_Parent.Refresh();
            Inventory.GetInstance().UpdateConsoleToolbar();
        }
                
        
        AttachmentsWrapper old_att_cont = m_AttachmentAttachmentsContainers.Get( item );
        if( old_att_cont )
        {
            m_AttachmentAttachmentsContainers.Remove( item );
            m_AttachmentAttachments.Remove( item );
            delete old_att_cont;
            
            if( m_Parent )
                m_Parent.Refresh();
            Inventory.GetInstance().UpdateConsoleToolbar();
        }
        
        RecomputeContainers();
        RecomputeOpenedContainers();
    }
    
    override void UpdateInterval()
    {
        if ( m_Entity )
        {
            if (m_CargoGrid)
            {
                bool hideCargo = m_Entity.GetInventory().IsInventoryLockedForLockType( HIDE_INV_FROM_SCRIPT ) || !m_Entity.CanDisplayCargo() || m_ForcedHide;
                if (m_CargoGrid.IsVisible() && hideCargo)
                {
                    HideCargo();
                }
                else if (!m_CargoGrid.IsVisible() && !hideCargo)
                {
                    ShowCargo();
                }
                
                m_CargoGrid.UpdateInterval();
            }
            
            if ( m_SlotIcon )
            {
                bool hide = m_LockCargo || ItemManager.GetInstance().GetDraggedItem() == m_Entity;
                if (!hide)
                {
                    SetOpenForSlotIcon(IsOpened());
                }
                m_SlotIcon.GetRadialIconPanel().Show( !hide );
                
            }
            
            super.UpdateInterval();
        }
    }
    
    override EntityAI GetFocusedContainerEntity()
    {
        return m_Entity;
    }
    
    override void UnfocusAll()
    {
        if( m_Atts )
        {
            m_Atts.UnfocusAll();
        }
            
        if( m_CargoGrid )
        {
            m_CargoGrid.UnfocusAll();
        }
        
        foreach( EntityAI e1, CargoContainer cargo : m_AttachmentCargos )
        {
            cargo.UnfocusAll();
                
        }
        
        foreach( EntityAI e2, Attachments att : m_AttachmentAttachments )
        {
            att.UnfocusAll();
        }
    }
    
    override bool IsLastIndex()
    {
        return m_ActiveIndex == ( m_OpenedContainers.Count() - 1 );
    }
    
    override bool IsFirstContainerFocused()
    {
        return IsFirstIndex();
    }
    
    override bool IsLastContainerFocused()
    {
        return IsLastIndex();
    }
 
    override void MoveGridCursor( int direction )
    {
        Container c = GetFocusedContainer();
        if ( c )
        {
            c.MoveGridCursor( direction );
            Inventory.GetInstance().UpdateConsoleToolbar();
        }
    }
    
    void SetEntity( EntityAI entity, bool immedUpdate = true )
    {
        m_Entity = entity;
        
        m_Atts = new Attachments( this, m_Entity );
        m_Atts.InitAttachmentGrid( SORT_ATTACHMENTS_OWN );
        m_AttachmentSlotsSorted = m_Atts.GetSlotsSorted();
        
        m_Entity.GetOnItemAttached().Insert( AttachmentAdded );
        m_Entity.GetOnItemDetached().Insert( AttachmentRemoved );
        
        m_ClosableHeader.SetItemPreview( m_Entity );
        CheckHeaderDragability();
        
        if ( m_Entity.GetInventory().GetCargo() )
        {
            m_CargoGrid = new CargoContainer( this, false );
            m_CargoGrid.GetRootWidget().SetSort( SORT_CARGO_OWN );
            m_CargoGrid.SetEntity( m_Entity, 0, immedUpdate );
            m_CargoGrid.UpdateHeaderText(); // TODO: refresh?
            Insert( m_CargoGrid );
        }
        else
        {
            string name = m_Entity.GetDisplayName();
            name.ToUpper();
            m_ClosableHeader.SetName( name );
        }
 
        m_AttachmentCargos                  = new map<EntityAI, ref CargoContainer>;
        m_AttachmentAttachmentsContainers   = new map<EntityAI, ref AttachmentsWrapper>;
        m_AttachmentAttachments             = new map<EntityAI, ref Attachments>;
        
        (Container.Cast( m_Parent )).Insert( this );
        
        foreach ( int slot_id : m_AttachmentSlotsSorted )
        {
            EntityAI item = m_Entity.GetInventory().FindAttachment( slot_id );
            if ( item )
                AttachmentAddedEx( item, InventorySlots.GetSlotName( slot_id ), m_Entity, false );
        }
        
        RecomputeContainers();
        
        if (m_CargoGrid)
        {
            bool hideCargo = m_Entity.GetInventory().IsInventoryLockedForLockType( HIDE_INV_FROM_SCRIPT ) || !m_Entity.CanDisplayCargo() || m_ForcedHide;
            if (m_CargoGrid.IsVisible() && hideCargo)
            {
                HideCargo();
            }
            else if (!m_CargoGrid.IsVisible() && !hideCargo)
            {
                ShowCargo();
            }
        }
        
        if( IsDisplayable() )
            SetOpenState( true );
        else
            SetOpenState( false );
        
        if (immedUpdate)
            m_Parent.m_Parent.Refresh();
        
        RecomputeOpenedContainers();
    }
    
    void HideCargo()
    {
        if( m_CargoGrid )
        {
            if(m_CargoGrid.IsVisible())
            {
                m_CargoGrid.OnHide();
                RecomputeOpenedContainers();
            }
        }
    }
    
    void ShowCargo()
    {
        if( m_CargoGrid )
        {
            if(!m_CargoGrid.IsVisible())
            {
                m_CargoGrid.OnShow();
                RecomputeOpenedContainers();
            }
        }
    }
 
    EntityAI GetEntity()
    {
        return m_Entity;
    }
 
    ItemPreviewWidget GetItemPreviewWidgetDragOrDrop( Widget w )
    {
        string name = w.GetName();
        name.Replace( "PanelWidget", "Render" );
        return ItemPreviewWidget.Cast( w.FindAnyWidget( name ) );
    }
 
    EntityAI GetItemPreviewItem( Widget w )
    {
        ItemPreviewWidget ipw = ItemPreviewWidget.Cast( w.FindAnyWidget( "Render" ) );
        if( !ipw )
        {
          string name = w.GetName();
          name.Replace( "PanelWidget", "Render" );
          ipw = ItemPreviewWidget.Cast( w.FindAnyWidget( name ) );
        }
        if( !ipw )
        {
          ipw = ItemPreviewWidget.Cast( w );
        }
        if( !ipw || !ipw.IsInherited( ItemPreviewWidget ) )
        {
            return NULL;
        }
        return ipw.GetItem();
    }
 
    Widget GetItemPreviewWidget( Widget w )
    {
        ItemPreviewWidget ipw = ItemPreviewWidget.Cast( w.FindAnyWidget( "Render" ) );
        if( !ipw )
        {
          string name = w.GetName();
          name.Replace( "PanelWidget", "Render" );
          ipw = ItemPreviewWidget.Cast( w.FindAnyWidget( name ) );
        }
        if( !ipw )
        {
          ipw = ItemPreviewWidget.Cast( w );
        }
        return ipw;
    }
 
    void MouseClick2(Widget w, int x, int y, int button)
    {
        SlotsIcon icon;
        w.GetUserData(icon);
        
        ItemBase selectedItem;
        if (icon)
            selectedItem = ItemBase.Cast(icon.GetEntity());
        
        if (selectedItem)
        {
            bool isReserved = icon.IsReserved();
 
            switch (button)
            {
                case MouseState.RIGHT:
                    #ifdef DIAG_DEVELOPER
                    if (GetDayZGame().IsLeftCtrlDown())
                        ShowActionMenu(selectedItem);
                    #endif
                    
                    if (isReserved)
                    {
                        EntityAI attachmentParent = icon.GetSlotParent();
                        GetGame().GetPlayer().GetHumanInventory().ClearUserReservedLocationSynced(selectedItem);
                        attachmentParent.GetOnAttachmentReleaseLock().Invoke(selectedItem, icon.GetSlotID());
                    }
 
                    break;
 
                case MouseState.MIDDLE:
                    if (!isReserved)
                        InspectItem(selectedItem);
 
                    break;
 
                case MouseState.LEFT:
                    if (!isReserved)
                    {
                        PlayerBase controlledPlayer = PlayerBase.Cast(GetGame().GetPlayer());
                        if (g_Game.IsLeftCtrlDown())
                        {
                            if (controlledPlayer.CanDropEntity(selectedItem))
                            {
                                if (selectedItem.GetTargetQuantityMax() < selectedItem.GetQuantity())
                                    selectedItem.SplitIntoStackMaxClient(null, -1);
                                else
                                    controlledPlayer.PhysicalPredictiveDropItem(selectedItem);
                            }
                        }
                        else
                        {
                            bool draggable = !controlledPlayer.GetInventory().HasInventoryReservation(selectedItem, null ) && !controlledPlayer.GetInventory().IsInventoryLocked() && selectedItem.GetInventory().CanRemoveEntity() && !controlledPlayer.IsItemsToDelete();
                            ItemManager.GetInstance().SetWidgetDraggable(w, draggable);
                        }
                    }
 
                    break;
            }
        }
    }
    
    void DropReceived(Widget w, int x, int y, CargoContainer cargo)
    {
        EntityAI item = GetItemPreviewItem(w);
        if (!item)
            return;
 
        #ifndef PLATFORM_CONSOLE
        int c_x, c_y;
        #endif
        
        EntityAI targetEntity = m_Entity;
        CargoBase targetCargo;
        
        if (cargo != m_CargoGrid)
        {
            targetEntity = m_AttachmentCargos.GetKeyByValue(cargo);
        }
        
        if (targetEntity)
        {
            targetCargo = targetEntity.GetInventory().GetCargo();
            #ifdef PLATFORM_CONSOLE
            if (m_CargoGrid && m_CargoGrid.HasItem(item))
                return;
            #endif
        }
        
        if (!targetCargo || !targetEntity)
            return;
        
        InventoryLocation dst = new InventoryLocation();
        #ifdef PLATFORM_CONSOLE
        x = 0;
        y = targetCargo.GetItemCount();
        targetEntity.GetInventory().FindFreeLocationFor(item, FindInventoryLocationType.CARGO, dst);
        #else
        c_x = targetCargo.GetHeight();
        c_y = targetCargo.GetWidth();
        
        dst.SetCargoAuto(targetCargo, item, x, y, item.GetInventory().GetFlipCargo());
        #endif
        
        InventoryLocation src = new InventoryLocation();
        item.GetInventory().GetCurrentInventoryLocation(src);
        if (src.CompareLocationOnly(dst) && src.GetFlip() == dst.GetFlip())
            return;
        
        #ifdef PLATFORM_CONSOLE
        if (dst.IsValid() && targetEntity.GetInventory().LocationCanAddEntity(dst))
        #else
        if (c_x > x && c_y > y && targetEntity.GetInventory().LocationCanAddEntity(dst))
        #endif
        {
            PlayerBase player = PlayerBase.Cast(GetGame().GetPlayer());
 
            SplitItemUtils.TakeOrSplitToInventoryLocation(player, dst);
            
            Icon icon = cargo.GetIcon(item);
            if (icon)
            {
                if (w && w.FindAnyWidget("Cursor"))
                    w.FindAnyWidget("Cursor").SetColor(ColorManager.BASE_COLOR);
 
                icon.Refresh();
                Refresh();
            }
        }
        
        ItemManager.GetInstance().HideDropzones();
        ItemManager.GetInstance().SetIsDragging(false);
    }
    
    void TakeAsAttachment( Widget w, Widget receiver )
    {
        ItemManager.GetInstance().HideDropzones();
        ItemManager.GetInstance().SetIsDragging( false );
        SlotsIcon slots_icon;
        EntityAI receiver_item;
        int slot_id = -1;
        bool is_reserved = false;
        EntityAI attached_entity;
        receiver.GetUserData(slots_icon);
        //string name = receiver.GetName();
        //name.Replace("PanelWidget", "Render");
        
        //ItemPreviewWidget receiver_iw = ItemPreviewWidget.Cast( receiver.FindAnyWidget(name) );
        if( slots_icon )
        {
            receiver_item   = slots_icon.GetEntity();
            slot_id         = slots_icon.GetSlotID();
            attached_entity = slots_icon.GetSlotParent();
            is_reserved     = slots_icon.IsReserved();
        }
        
        EntityAI item = GetItemPreviewItem( w );
        if( !item )
        {
            return;
        }
        ItemBase item_base  = ItemBase.Cast( item );
        InventoryLocation il = new InventoryLocation;
        float stackable;
        
        PlayerBase player = PlayerBase.Cast( GetGame().GetPlayer() );
        if( !item.GetInventory().CanRemoveEntity() || !player.CanManipulateInventory() )
            return;
        
        EntityAI target_att_entity = m_Entity;
        Weapon_Base wpn;
        Magazine mag;
        if( Class.CastTo(wpn,  m_Entity ) && Class.CastTo(mag,  item ) )
        {
            if( player.GetWeaponManager().CanAttachMagazine( wpn, mag ) )
            {
                player.GetWeaponManager().AttachMagazine( mag );
            }
        }
        else if( receiver_item && !is_reserved )
        {
            if( ( ItemBase.Cast( receiver_item ) ).CanBeCombined( ItemBase.Cast( item ) ) )
            {
                ( ItemBase.Cast( receiver_item ) ).CombineItemsClient( ItemBase.Cast( item ) );
            }
            else if( GameInventory.CanSwapEntitiesEx( receiver_item, item ) )
            {
                if( !receiver_item.GetInventory().CanRemoveEntity() )
                    return;
                GetGame().GetPlayer().PredictiveSwapEntities( receiver_item, item );
            }
            else if( receiver_item.GetInventory().CanAddAttachment( item ) )
            {
                player.PredictiveTakeEntityToTargetAttachment(receiver_item, item);
            }
        }
        else if( attached_entity && attached_entity.GetInventory().CanAddAttachmentEx( item, slot_id ) )
        {
            stackable = item_base.GetTargetQuantityMax(slot_id);
            if( stackable == 0 || stackable >= item_base.GetQuantity() )
            {
                player.PredictiveTakeEntityToTargetAttachmentEx(attached_entity, item, slot_id);
            }
            else if( stackable != 0 && stackable < item_base.GetQuantity() )
            {
                item_base.SplitIntoStackMaxClient( attached_entity, slot_id );
            }
        }
        else if(attached_entity && attached_entity.GetInventory().CanAddAttachment(item))
        {
            attached_entity.GetInventory().FindFreeLocationFor(item,FindInventoryLocationType.ATTACHMENT,il);
            stackable = item_base.GetTargetQuantityMax(il.GetSlot());
            if( stackable == 0 || stackable >= item_base.GetQuantity() )
            {
                player.PredictiveTakeEntityToTargetAttachmentEx(attached_entity, item, il.GetSlot());
            }
            else if( stackable != 0 && stackable < item_base.GetQuantity() )
            {
                item_base.SplitIntoStackMaxClient( attached_entity, il.GetSlot() );
            }
        }
        else if( m_Entity.GetInventory().CanAddAttachment(item) )
        {
            m_Entity.GetInventory().FindFreeLocationFor(item,FindInventoryLocationType.ATTACHMENT,il);
            stackable = item_base.GetTargetQuantityMax(il.GetSlot());
            if( stackable == 0 || stackable >= item_base.GetQuantity() )
            {
                player.PredictiveTakeEntityToTargetAttachmentEx(m_Entity, item, il.GetSlot());
            }
            else if( stackable != 0 && stackable < item_base.GetQuantity() )
            {
                item_base.SplitIntoStackMaxClient( m_Entity, il.GetSlot() );
            }
        }
        else if( m_Entity.GetInventory().CanAddEntityInCargo( item, item.GetInventory().GetFlipCargo() ) && !m_Entity.GetInventory().HasEntityInCargo( item ) )
        {
            SplitItemUtils.TakeOrSplitToInventory( PlayerBase.Cast( GetGame().GetPlayer() ), m_Entity, item );
        }
        /*else if( !player.GetInventory().HasEntityInInventory( item ) || !m_Entity.GetInventory().HasEntityInCargo( item ) )
        {
            SplitItemUtils.TakeOrSplitToInventory( PlayerBase.Cast( GetGame().GetPlayer() ), m_Entity, item );
        }*/
    }
 
    override void OnDropReceivedFromHeader( Widget w, int x, int y, Widget receiver )
    {
        TakeAsAttachment( w, receiver );
    }
 
    void OnDropReceivedFromHeader2( Widget w, int x, int y, Widget receiver )
    {
        TakeAsAttachment( w, receiver );
    }
 
    void DoubleClick(Widget w, int x, int y, int button)
    {
        if( button == MouseState.LEFT && !g_Game.IsLeftCtrlDown())
        {
            PlayerBase player = PlayerBase.Cast( GetGame().GetPlayer() );
            if( w == NULL || player.GetInventory().IsInventoryLocked() )
            {
                return;
            }
            ItemPreviewWidget iw = ItemPreviewWidget.Cast( w.FindAnyWidget( "Render" ) );
            if( !iw )
            {
                string name = w.GetName();
                name.Replace( "PanelWidget", "Render" );
                iw = ItemPreviewWidget.Cast( w.FindAnyWidget( name ) );
            }
            
            if( !iw )
            {
                iw = ItemPreviewWidget.Cast( w );
            }
            
            EntityAI item = iw.GetItem();
            
            if( !item )
            {
                return;
            }
            
            SlotsIcon icon;
            iw.GetUserData(icon);
        
            if(icon && icon.IsReserved())
            {
                return;
            }
            
            if( !item.GetInventory().CanRemoveEntity() || !player.CanManipulateInventory() )
                return;
            
            if( player.GetInventory().HasEntityInInventory( item ) && player.GetHumanInventory().CanAddEntityInHands( item ) )
            {
                player.PredictiveTakeEntityToHands( item );
            }
            else
            {
                if(player.GetInventory().CanAddEntityToInventory( item ) && item.GetInventory().CanRemoveEntity())
                {
                    player.PredictiveTakeEntityToInventory( FindInventoryLocationType.ANY, InventoryItem.Cast( item ) );
                }
                else
                {
                    if( player.GetHumanInventory().CanAddEntityInHands( item ) )
                    {
                        player.PredictiveTakeEntityToHands( item );
                    }
                }
            }
    
            HideOwnedTooltip();
    
            name = w.GetName();
            name.Replace( "PanelWidget", "Temperature" );
            w.FindAnyWidget( name ).Show( false );
        }
    }
 
    bool DraggingOverGrid( Widget w,  int x, int y, Widget reciever, CargoContainer cargo )
    {
        if( w == NULL )
        {
            return false;
        }
        
        EntityAI item = GetItemPreviewItem( w );
        
        if( !item )
        {
            return false;
        }
 
        int color;
        int idx = 0;
        int c_x, c_y;
        
        EntityAI target_entity;
        CargoBase target_cargo;
        
        if( cargo == m_CargoGrid )
        {
            target_entity   = m_Entity;
            target_cargo    = m_Entity.GetInventory().GetCargo();
        }
        else
        {
            target_entity   = m_AttachmentCargos.GetKeyByValue( cargo );
            if( target_entity )
            {
                target_cargo    = target_entity.GetInventory().GetCargo();
            }
            else
                return false;
        }
        
        if( target_cargo && target_entity )
        {
            c_x = target_cargo.GetHeight();
            c_y = target_cargo.GetWidth();
        }
        else
            return false;
        
        if( c_x > x && c_y > y && target_entity.GetInventory().CanAddEntityInCargoEx( item, idx, x, y, item.GetInventory().GetFlipCargo() ) )
        {
            color = ColorManager.GREEN_COLOR;
            if( target_entity.GetHierarchyRootPlayer() == GetGame().GetPlayer() )
            {
                ItemManager.GetInstance().GetRightDropzone().SetAlpha( 1 );
            }
            else
            {
                ItemManager.GetInstance().GetLeftDropzone().SetAlpha( 1 );
            }
        }
        else
        {
            color = ColorManager.RED_COLOR;
        }
 
        if( w.FindAnyWidget("Cursor") )
        {
            w.FindAnyWidget("Cursor").SetColor( color );
        }
        else
        {
            string name = w.GetName();
            name.Replace( "PanelWidget", "Cursor" );
            if( w.FindAnyWidget( name ) )
            {
                w.FindAnyWidget( name ).SetColor( color );
            }
        }
 
        return true;
    }
 
    override void DraggingOver( Widget w, int x, int y, Widget receiver )
    {
        DraggingOverHeader( w, x, y, receiver );
    }
 
    override void DraggingOverHeader( Widget w, int x, int y, Widget receiver )
    {
        if( w == NULL )
        {
            return;
        }
        EntityAI item = GetItemPreviewItem( w );
        if( !item )
        {
            return;
        }
        
        SlotsIcon slots_icon;
        receiver.GetUserData(slots_icon);
    
        EntityAI attached_entity;
        EntityAI receiver_item;
        bool is_reserved = false;
        int slot_id = -1;
            
        if(slots_icon)
        {
            attached_entity = slots_icon.GetSlotParent();
            slot_id         = slots_icon.GetSlotID();
            receiver_item   = slots_icon.GetEntity();
            is_reserved     = slots_icon.IsReserved();
        }
 
 
        Weapon_Base wpn;
        Magazine mag;
        PlayerBase player = PlayerBase.Cast( GetGame().GetPlayer() );
        if( m_Entity )
        {
            if( Class.CastTo(wpn,  m_Entity ) && Class.CastTo(mag,  item ) )
            {
                if( player.GetWeaponManager().CanAttachMagazine( wpn, mag ) )
                {
                    ItemManager.GetInstance().HideDropzones();
                    if( m_Entity.GetHierarchyRootPlayer() == GetGame().GetPlayer() )
                    {
                        ItemManager.GetInstance().GetRightDropzone().SetAlpha( 1 );
                    }
                    else
                    {
                        ItemManager.GetInstance().GetLeftDropzone().SetAlpha( 1 );
                    }
                    ColorManager.GetInstance().SetColor( w, ColorManager.GREEN_COLOR );
                }
            }
            else if( receiver_item && !is_reserved )
            {
                ItemBase receiver_itemIB    = ItemBase.Cast( receiver_item );
                ItemBase itemIB             = ItemBase.Cast( item );
                if( receiver_itemIB && itemIB && receiver_itemIB.CanBeCombined( itemIB ) )
                {
                    ItemManager.GetInstance().HideDropzones();
                    if( m_Entity.GetHierarchyRootPlayer() == GetGame().GetPlayer() )
                    {
                        ItemManager.GetInstance().GetRightDropzone().SetAlpha( 1 );
                    }
                    else
                    {
                        ItemManager.GetInstance().GetLeftDropzone().SetAlpha( 1 );
                    }
                    ColorManager.GetInstance().SetColor( w, ColorManager.COMBINE_COLOR );
                }
                else if( GameInventory.CanSwapEntitiesEx( receiver_item, item ) )
                {
                    ItemManager.GetInstance().HideDropzones();
                    if( m_Entity.GetHierarchyRootPlayer() == GetGame().GetPlayer() )
                    {
                        ItemManager.GetInstance().GetRightDropzone().SetAlpha( 1 );
                    }
                    else
                    {
                        ItemManager.GetInstance().GetLeftDropzone().SetAlpha( 1 );
                    }
                    ColorManager.GetInstance().SetColor( w, ColorManager.SWAP_COLOR );
                }
                else if( receiver_itemIB.GetInventory().CanAddAttachment( item ) )
                {
                    ItemManager.GetInstance().HideDropzones();
                    if( receiver_itemIB.GetHierarchyRootPlayer() == GetGame().GetPlayer() )
                    {
                        ItemManager.GetInstance().GetRightDropzone().SetAlpha( 1 );
                    }
                    else
                    {
                        ItemManager.GetInstance().GetLeftDropzone().SetAlpha( 1 );
                    }
                    ColorManager.GetInstance().SetColor( w, ColorManager.GREEN_COLOR );
                }
            }
            else if( attached_entity && attached_entity.GetInventory().CanAddAttachmentEx( item, slot_id ) )
            {
                ItemManager.GetInstance().HideDropzones();
                if( attached_entity.GetHierarchyRootPlayer() == GetGame().GetPlayer() )
                {
                    ItemManager.GetInstance().GetRightDropzone().SetAlpha( 1 );
                }
                else
                {
                    ItemManager.GetInstance().GetLeftDropzone().SetAlpha( 1 );
                }
                ColorManager.GetInstance().SetColor( w, ColorManager.GREEN_COLOR );
            }
            else if( m_Entity.GetInventory().CanAddAttachment( item ) )
            {
                ItemManager.GetInstance().HideDropzones();
                if( m_Entity.GetHierarchyRootPlayer() == GetGame().GetPlayer() )
                {
                    ItemManager.GetInstance().GetRightDropzone().SetAlpha( 1 );
                }
                else
                {
                    ItemManager.GetInstance().GetLeftDropzone().SetAlpha( 1 );
                }
                ColorManager.GetInstance().SetColor( w, ColorManager.GREEN_COLOR );
            }
            else if( ( m_Entity.GetInventory().CanAddEntityInCargo( item, item.GetInventory().GetFlipCargo() ) && !m_Entity.GetInventory().HasEntityInCargo( item ) ) /*|| player.GetHumanInventory().HasEntityInHands( item )*/ )
            {
                ItemManager.GetInstance().HideDropzones();
                if( m_Entity.GetHierarchyRootPlayer() == GetGame().GetPlayer() )
                {
                    ItemManager.GetInstance().GetRightDropzone().SetAlpha( 1 );
                }
                else
                {
                    ItemManager.GetInstance().GetLeftDropzone().SetAlpha( 1 );
                }
                ColorManager.GetInstance().SetColor( w, ColorManager.GREEN_COLOR );
            }
            else
            {
                ItemManager.GetInstance().ShowSourceDropzone( item );
                ColorManager.GetInstance().SetColor( w, ColorManager.RED_COLOR );
            }
        }
    }
}