Clear() public method

public Clear ( ) : void
return void
 void ReleaseHitChain(CssBoxHitChain hitChain)
 {
     hitChain.Clear();
     this.hitChainPools.Push(hitChain);
 }
        public void MouseMove(UIMouseMoveEventArgs e, CssBox startAt)
        {
            if (!_isBinded)
            {
                return;
            }
            if (startAt == null)
            {
                return;
            }
            //-----------------------------------------
            int x = e.X;
            int y = e.Y;


            if (e.IsDragging && _latestMouseDownChain != null)
            {
                //dragging *** , if changed
                if (_mousedownX != x || _mousedownY != y)
                {
                    //handle mouse drag
                    CssBoxHitChain hitChain = GetFreeHitChain();
#if DEBUG
                    hitChain.debugEventPhase = CssBoxHitChain.dbugEventPhase.MouseMove;
#endif
                    hitChain.SetRootGlobalPosition(x, y);
                    BoxHitUtils.HitTest(startAt, x, y, hitChain);
                    SetEventOrigin(e, hitChain);
                    //---------------------------------------------------------
                    //propagate mouse drag
                    ForEachOnlyEventPortalBubbleUp(e, hitChain, (portal) =>
                    {
                        portal.PortalMouseMove(e);
                        return(true);
                    });
                    //---------------------------------------------------------
                    if (!e.CancelBubbling)
                    {
                        ClearPreviousSelection();
                        if (_latestMouseDownChain.Count > 0 && hitChain.Count > 0)
                        {
                            if (_htmlVisualRoot.LayoutVersion != _lastDomLayoutVersion)
                            {
                                //the dom has been changed so...
                                //need to evaluate hitchain at mousedown position again
                                int lastRootGlobalX = _latestMouseDownChain.RootGlobalX;
                                int lastRootGlobalY = _latestMouseDownChain.RootGlobalY;
                                _latestMouseDownChain.Clear();
                                _latestMouseDownChain.SetRootGlobalPosition(lastRootGlobalX, lastRootGlobalY);
                                BoxHitUtils.HitTest(_mouseDownStartAt, lastRootGlobalX, lastRootGlobalY, _latestMouseDownChain);
                            }

                            //create selection range
                            var newSelectionRange = new SelectionRange(
                                _latestMouseDownChain,
                                hitChain,
                                _textService);
                            if (newSelectionRange.IsValid)
                            {
                                _htmlVisualRoot.SetSelection(newSelectionRange);
                            }
                            else
                            {
                                _htmlVisualRoot.SetSelection(null);
                            }
                        }
                        else
                        {
                            _htmlVisualRoot.SetSelection(null);
                        }

                        ForEachEventListenerBubbleUp(e, hitChain, () =>
                        {
                            e.CurrentContextElement.ListenMouseMove(e);
                            return(true);
                        });
                    }

                    //---------------------------------------------------------
                    ReleaseHitChain(hitChain);
                }
            }
            else
            {
                //mouse move
                //---------------------------------------------------------
                CssBoxHitChain hitChain = GetFreeHitChain();
#if DEBUG
                hitChain.debugEventPhase = CssBoxHitChain.dbugEventPhase.MouseMove;
#endif
                hitChain.SetRootGlobalPosition(x, y);
                BoxHitUtils.HitTest(startAt, x, y, hitChain);
                SetEventOrigin(e, hitChain);
                //---------------------------------------------------------

                ForEachOnlyEventPortalBubbleUp(e, hitChain, (portal) =>
                {
                    portal.PortalMouseMove(e);
                    return(true);
                });
                //---------------------------------------------------------
                if (!e.CancelBubbling)
                {
                    ForEachEventListenerBubbleUp(e, hitChain, () =>
                    {
                        e.CurrentContextElement.ListenMouseMove(e);
                        return(true);
                    });
                }

                var cssbox = e.ExactHitObject as HtmlBoxes.CssBox;
                if (cssbox != null)
                {
                    switch (cssbox.CursorName)
                    {
                    case Css.CssCursorName.IBeam:
                        if (e.MouseCursorStyle != MouseCursorStyle.IBeam)
                        {
                            e.MouseCursorStyle = MouseCursorStyle.IBeam;
                        }
                        break;

                    case Css.CssCursorName.Hand:
                    case Css.CssCursorName.Pointer:
                        if (e.MouseCursorStyle != MouseCursorStyle.Pointer)
                        {
                            e.MouseCursorStyle = MouseCursorStyle.Pointer;
                        }
                        break;

                    case Css.CssCursorName.Default:
                        if (e.MouseCursorStyle != MouseCursorStyle.Default)
                        {
                            e.MouseCursorStyle = MouseCursorStyle.Default;
                        }
                        break;
                    }
                }
                else
                {
                    var cssspan = e.ExactHitObject as HtmlBoxes.CssTextRun;
                    if (cssspan != null)
                    {
                        cssbox = cssspan.OwnerBox;
                        switch (cssbox.CursorName)
                        {
                        default:
                            e.MouseCursorStyle = MouseCursorStyle.IBeam;
                            break;

                        case Css.CssCursorName.Hand:
                        case Css.CssCursorName.Pointer:
                            if (e.MouseCursorStyle != MouseCursorStyle.Pointer)
                            {
                                e.MouseCursorStyle = MouseCursorStyle.Pointer;
                            }
                            break;
                        }
                    }
                }
                ReleaseHitChain(hitChain);
            }
        }
        public void MouseMove(UIMouseEventArgs e, CssBox startAt)
        {
            if (!_isBinded)
            {
                return;
            }
            if (startAt == null)
            {
                return;
            }
            //-----------------------------------------
            int x = e.X;
            int y = e.Y;

            if (e.IsDragging && _latestMouseDownChain != null)
            {
                //dragging *** , if changed
                if (this._mousedownX != x || this._mousedownY != y)
                {
                    //handle mouse drag
                    CssBoxHitChain hitChain = GetFreeHitChain();
                    hitChain.SetRootGlobalPosition(x, y);
                    BoxHitUtils.HitTest(startAt, x, y, hitChain);
                    SetEventOrigin(e, hitChain);
                    //---------------------------------------------------------
                    //propagate mouse drag
                    ForEachOnlyEventPortalBubbleUp(e, hitChain, (portal) =>
                    {
                        portal.PortalMouseMove(e);
                        return(true);
                    });
                    //---------------------------------------------------------
                    if (!e.CancelBubbling)
                    {
                        ClearPreviousSelection();
                        if (_latestMouseDownChain.Count > 0 && hitChain.Count > 0)
                        {
                            if (this._htmlContainer.LayoutVersion != this.lastDomLayoutVersion)
                            {
                                //the dom has been changed so...
                                //need to evaluate hitchain at mousedown position again
                                int lastRootGlobalX = _latestMouseDownChain.RootGlobalX;
                                int lastRootGlobalY = _latestMouseDownChain.RootGlobalY;
                                _latestMouseDownChain.Clear();
                                _latestMouseDownChain.SetRootGlobalPosition(lastRootGlobalX, lastRootGlobalY);
                                BoxHitUtils.HitTest(_mouseDownStartAt, lastRootGlobalX, lastRootGlobalY, _latestMouseDownChain);
                            }

                            //create selection range
                            var newSelectionRange = new SelectionRange(
                                _latestMouseDownChain,
                                hitChain,
                                this.ifonts);
                            if (newSelectionRange.IsValid)
                            {
                                this._htmlContainer.SetSelection(newSelectionRange);
                            }
                            else
                            {
                                this._htmlContainer.SetSelection(null);
                            }
                        }
                        else
                        {
                            this._htmlContainer.SetSelection(null);
                        }

                        ForEachEventListenerBubbleUp(e, hitChain, () =>
                        {
                            e.CurrentContextElement.ListenMouseMove(e);
                            return(true);
                        });
                    }

                    //---------------------------------------------------------
                    ReleaseHitChain(hitChain);
                }
            }
            else
            {
                //mouse move
                //---------------------------------------------------------
                CssBoxHitChain hitChain = GetFreeHitChain();
                hitChain.SetRootGlobalPosition(x, y);
                BoxHitUtils.HitTest(startAt, x, y, hitChain);
                SetEventOrigin(e, hitChain);
                //---------------------------------------------------------

                ForEachOnlyEventPortalBubbleUp(e, hitChain, (portal) =>
                {
                    portal.PortalMouseMove(e);
                    return(true);
                });
                //---------------------------------------------------------
                if (!e.CancelBubbling)
                {
                    ForEachEventListenerBubbleUp(e, hitChain, () =>
                    {
                        e.CurrentContextElement.ListenMouseMove(e);
                        return(true);
                    });
                }
                ReleaseHitChain(hitChain);
            }
        }
 void ReleaseHitChain(CssBoxHitChain hitChain)
 {
     hitChain.Clear();
     this.hitChainPools.Push(hitChain);
 }