/*--------------------------------------------------------------------------------------------*/
        public virtual void TreeUpdate()
        {
            HoverItem hoverItem = GetComponent <HoverItem>();

            DestroyRenderersIfNecessary();
            TryRebuildWithItemType(hoverItem.ItemType);

            ////

            HoverItemHighlightState highState      = GetComponent <HoverItemHighlightState>();
            HoverItemSelectionState selState       = GetComponent <HoverItemSelectionState>();
            HoverRenderer           activeRenderer = ((HoverRenderer)ButtonRenderer ?? SliderRenderer);

            UpdateRenderer(activeRenderer, hoverItem);
            UpdateRendererCanvas(activeRenderer, hoverItem);
            UpdateRendererIndicator(activeRenderer, highState, selState);

            if (ButtonRenderer != null)
            {
                UpdateButtonSettings(highState);
            }

            if (SliderRenderer != null)
            {
                UpdateSliderSettings(hoverItem);
                UpdateSliderSettings(hoverItem, highState);
            }

            Controllers.TryExpireControllers();
        }
        /*--------------------------------------------------------------------------------------------*/
        private void FillCursorLists()
        {
            for (int i = 0; i < vItems.Count; i++)
            {
                HoverItemData           data       = vItems[i].Data;
                IItemDataSelectable     selData    = (IItemDataSelectable)data;
                HoverItemHighlightState highState  = data.GetComponent <HoverItemHighlightState>();
                ICursorData             cursorData = highState.NearestHighlight.Value.Cursor;

                if (cursorData.Idle.Progress >= 1)
                {
                    selData.DeselectStickySelections();
                    continue;
                }

                HoverItemSelectionState selState = data.GetComponent <HoverItemSelectionState>();
                HoverRenderer           rend     = data.GetComponent <HoverItemRendererUpdater>().ActiveRenderer;

                var info = new StickySelectionInfo {
                    ItemWorldPosition = rend.GetCenterWorldPosition(),
                    SelectionProgress = selState.SelectionProgress
                };

                cursorData.ActiveStickySelections.Add(info);
            }
        }
        /*--------------------------------------------------------------------------------------------*/
        private void UpdateRendererCanvas(HoverRenderer pRenderer, HoverItem pHoverItem)
        {
            HoverCanvasDataUpdater canvasUp = pRenderer.GetCanvasDataUpdater();

            if (canvasUp == null)
            {
                return;
            }

            IItemData         data         = pHoverItem.Data;
            IItemDataCheckbox checkboxData = (data as IItemDataCheckbox);
            IItemDataRadio    radioData    = (data as IItemDataRadio);
            IItemDataSelector selectorData = (data as IItemDataSelector);
            IItemDataSticky   stickyData   = (data as IItemDataSticky);
            IItemDataSlider   sliderData   = (data as IItemDataSlider);
            var icon = HoverCanvasDataUpdater.IconPairType.Unspecified;

            if (checkboxData != null)
            {
                icon = (checkboxData.Value ?
                        HoverCanvasDataUpdater.IconPairType.CheckboxOn :
                        HoverCanvasDataUpdater.IconPairType.CheckboxOff);
            }
            else if (radioData != null)
            {
                icon = (radioData.Value ?
                        HoverCanvasDataUpdater.IconPairType.RadioOn :
                        HoverCanvasDataUpdater.IconPairType.RadioOff);
            }
            else if (selectorData != null)
            {
                if (selectorData.Action == SelectorActionType.NavigateIn)
                {
                    icon = HoverCanvasDataUpdater.IconPairType.NavigateIn;
                }
                else if (selectorData.Action == SelectorActionType.NavigateOut)
                {
                    icon = HoverCanvasDataUpdater.IconPairType.NavigateOut;
                }
            }
            else if (stickyData != null)
            {
                icon = HoverCanvasDataUpdater.IconPairType.Sticky;
            }
            else if (sliderData != null)
            {
                icon = HoverCanvasDataUpdater.IconPairType.Slider;
            }

            canvasUp.Controllers.Set(HoverCanvasDataUpdater.LabelTextName, this);
            canvasUp.Controllers.Set(HoverCanvasDataUpdater.IconTypeName, this);

            canvasUp.LabelText = (sliderData == null ? data.Label :
                                  sliderData.GetFormattedLabel(sliderData));
            canvasUp.IconType = icon;
        }
        /*--------------------------------------------------------------------------------------------*/
        private void UpdateRendererIndicator(HoverRenderer pRenderer,
                                             HoverItemHighlightState pHighState, HoverItemSelectionState pSelState)
        {
            HoverIndicator rendInd = pRenderer.GetIndicator();

            rendInd.Controllers.Set(HoverIndicator.HighlightProgressName, this);
            rendInd.Controllers.Set(HoverIndicator.SelectionProgressName, this);

            rendInd.HighlightProgress = pHighState.MaxHighlightProgress;
            rendInd.SelectionProgress = pSelState.SelectionProgress;

            if (pSelState.WasSelectedThisFrame)
            {
                rendInd.LatestSelectionTime = DateTime.UtcNow;
            }
        }
        ////////////////////////////////////////////////////////////////////////////////////////////////
        /*--------------------------------------------------------------------------------------------*/
        private void UpdateChildRenderer(HoverRenderer pChildRend)
        {
            HoverAlphaRendererUpdater rendUp = pChildRend.GetComponent <HoverAlphaRendererUpdater>();

            if (rendUp == null)
            {
                return;
            }

            rendUp.Controllers.Set(SortingLayerName, this);
            rendUp.Controllers.Set(MasterAlphaName, this);
            rendUp.Controllers.Set(EnabledAlphaName, this);
            rendUp.Controllers.Set(DisabledAlphaName, this);

            rendUp.SortingLayer  = SortingLayer;
            rendUp.MasterAlpha   = MasterAlpha;
            rendUp.EnabledAlpha  = EnabledAlpha;
            rendUp.DisabledAlpha = DisabledAlpha;
        }
        /*--------------------------------------------------------------------------------------------*/
        public virtual void TreeUpdate()
        {
            HoverRenderer hoverRend      = GetComponent <HoverRenderer>();
            int           childRendCount = hoverRend.GetChildRendererCount();
            int           childFillCount = hoverRend.GetChildFillCount();
            float         currAlpha      = MasterAlpha * (hoverRend.IsEnabled ? EnabledAlpha : DisabledAlpha);

            for (int i = 0; i < childRendCount; i++)
            {
                UpdateChildRenderer(hoverRend.GetChildRenderer(i));
            }

            for (int i = 0; i < childFillCount; i++)
            {
                UpdateChildFill(hoverRend.GetChildFill(i), currAlpha);
            }

            UpdateChildCanvas(hoverRend.GetCanvas(), currAlpha);
            Controllers.TryExpireControllers();
        }
 ////////////////////////////////////////////////////////////////////////////////////////////////
 /*--------------------------------------------------------------------------------------------*/
 private void UpdateRenderer(HoverRenderer pRenderer, HoverItem pHoverItem)
 {
     pRenderer.Controllers.Set(HoverRenderer.IsEnabledName, this);
     pRenderer.IsEnabled = pHoverItem.Data.IsEnabled;
 }