//Find the first valid insertion position after or before the boundary node
private bool _GetFirstFixedPosition(FixedTextPointer ftp, out FixedPosition fixedP)
{
LogicalDirection dir = LogicalDirection.Forward;
if (ftp.FlowPosition.FlowNode.Fp != 0)
{
//End boundary
dir = LogicalDirection.Backward;
}
FlowPosition flowP = (FlowPosition)ftp.FlowPosition.Clone();
//Get the first node that comes before or after the boundary node(probably a start or end node)
flowP.Move(dir);
FixedTextPointer nav = new FixedTextPointer(true, dir, flowP);
if (flowP.IsStart || flowP.IsEnd)
{
((ITextPointer)nav).MoveToNextInsertionPosition(dir);
}
if (this.Container.GetPageNumber(nav) == this.PageIndex)
{
return(Container.FixedTextBuilder.GetFixedPosition(nav.FlowPosition, dir, out fixedP));
}
else
{
//This position is on another page.
fixedP = new FixedPosition(this.Container.FixedTextBuilder.FixedFlowMap.FixedStartEdge, 0);
return(false);
}
}
// Immediate scoping element. If no element scops the position,
// returns the container element.
internal FixedElement GetScopingElement()
{
FlowPosition flowScan = (FlowPosition)this.Clone();
int nestedElement = 0;
TextPointerContext tst;
while (flowScan.FlowNode.Fp > 0 && !IsVirtual(_FixedFlowMap[flowScan.FlowNode.Fp - 1]) && // do not de-virtualize nodes
(tst = flowScan.GetPointerContext(LogicalDirection.Backward)) != TextPointerContext.None)
{
if (tst == TextPointerContext.ElementStart)
{
if (nestedElement == 0)
{
FlowPosition flowEnd = flowScan.GetClingPosition(LogicalDirection.Backward);
return((FixedElement)flowEnd._flowNode.Cookie);
}
nestedElement--;
}
else if (tst == TextPointerContext.ElementEnd)
{
nestedElement++;
}
flowScan.Move(LogicalDirection.Backward);
}
return(_container.ContainerElement);
}
// Token: 0x06002F97 RID: 12183 RVA: 0x000D65F8 File Offset: 0x000D47F8
internal FixedElement GetScopingElement()
{
FlowPosition flowPosition = (FlowPosition)this.Clone();
int num = 0;
TextPointerContext pointerContext;
while (flowPosition.FlowNode.Fp > 0 && !this.IsVirtual(this._FixedFlowMap[flowPosition.FlowNode.Fp - 1]) && (pointerContext = flowPosition.GetPointerContext(LogicalDirection.Backward)) != TextPointerContext.None)
{
if (pointerContext == TextPointerContext.ElementStart)
{
if (num == 0)
{
FlowPosition clingPosition = flowPosition.GetClingPosition(LogicalDirection.Backward);
return((FixedElement)clingPosition._flowNode.Cookie);
}
num--;
}
else if (pointerContext == TextPointerContext.ElementEnd)
{
num++;
}
flowPosition.Move(LogicalDirection.Backward);
}
return(this._container.ContainerElement);
}
// Token: 0x06002EBD RID: 11965 RVA: 0x000D31A4 File Offset: 0x000D13A4
ITextPointer ITextPointer.CreatePointer(int distance, LogicalDirection gravity)
{
ValidationHelper.VerifyDirection(gravity, "gravity");
FlowPosition flowPosition = (FlowPosition)this._flowPosition.Clone();
if (!flowPosition.Move(distance))
{
throw new ArgumentException(SR.Get("BadDistance"), "distance");
}
return(new FixedTextPointer(true, gravity, flowPosition));
}
// Token: 0x06002EF7 RID: 12023 RVA: 0x000D46A8 File Offset: 0x000D28A8
private bool _GetFirstFixedPosition(FixedTextPointer ftp, out FixedPosition fixedP)
{
LogicalDirection logicalDirection = LogicalDirection.Forward;
if (ftp.FlowPosition.FlowNode.Fp != 0)
{
logicalDirection = LogicalDirection.Backward;
}
FlowPosition flowPosition = (FlowPosition)ftp.FlowPosition.Clone();
flowPosition.Move(logicalDirection);
FixedTextPointer fixedTextPointer = new FixedTextPointer(true, logicalDirection, flowPosition);
if (flowPosition.IsStart || flowPosition.IsEnd)
{
((ITextPointer)fixedTextPointer).MoveToNextInsertionPosition(logicalDirection);
}
if (this.Container.GetPageNumber(fixedTextPointer) == this.PageIndex)
{
return(this.Container.FixedTextBuilder.GetFixedPosition(fixedTextPointer.FlowPosition, logicalDirection, out fixedP));
}
fixedP = new FixedPosition(this.Container.FixedTextBuilder.FixedFlowMap.FixedStartEdge, 0);
return(false);
}
