/// <summary>
/// Visit the control at the specified index.
/// </summary>
/// <param name="index"></param>
/// <param name="visitor"></param>
/// <returns>true if the visit was successful</returns>
private bool VisitControl(int index, ControlVisitor visitor)
{
object obj = _controls[index];
if (obj is Control)
{
return(visitor.VisitControl((Control)obj));
}
else if (obj is LightweightControl)
{
return(visitor.VisitLightweightControl((LightweightControl)obj));
}
else
{
Debug.Fail("Unsupported control type detected: " + obj.GetType().Name);
return(false);
}
}
//..
public void Accept(ControlVisitor visitor)
{
visitor.Visit(this);
}
/// <summary>
/// Visit all controls in the specified forward/backward direction.
/// </summary>
/// <param name="from"></param>
/// <param name="forward"></param>
/// <param name="wrap"></param>
/// <param name="stopResult">the value expected from the visitor to stop the visit loop</param>
/// <param name="visitor"></param>
/// <returns></returns>
private bool VisitControlsUntilStopValue(int from, bool forward, bool wrap, bool stopResult, ControlVisitor visitor)
{
int currIndex = from;
while (true)
{
int nextIndex = -1;
if (currIndex < 0)
{
if (_controls.Count > 0)
{
nextIndex = forward ? 0 : _controls.Count - 1;
}
}
else
{
nextIndex = GetNextControlIndex(currIndex, forward, wrap);
}
if (nextIndex != -1)
{
if (VisitControl(nextIndex, visitor) == stopResult)
{
return(stopResult);
}
}
else
{
return(!stopResult);
}
currIndex = nextIndex;
}
}
/// <summary>
/// Visit all controls in the specified forward/backward direction.
/// </summary>
/// <param name="from"></param>
/// <param name="forward"></param>
/// <param name="wrap"></param>
/// <param name="stopResult">the value expected from the visitor to stop the visit loop</param>
/// <param name="visitor"></param>
/// <returns></returns>
private bool VisitControlsUntilStopValue(int from, bool forward, bool wrap, bool stopResult, ControlVisitor visitor)
{
int currIndex = from;
while (true)
{
int nextIndex = -1;
if (currIndex < 0)
{
if (_controls.Count > 0)
nextIndex = forward ? 0 : _controls.Count - 1;
}
else
nextIndex = GetNextControlIndex(currIndex, forward, wrap);
if (nextIndex != -1)
{
if (VisitControl(nextIndex, visitor) == stopResult)
return stopResult;
}
else
{
return !stopResult;
}
currIndex = nextIndex;
}
}
/// <summary>
/// Visit the control at the specified index.
/// </summary>
/// <param name="index"></param>
/// <param name="visitor"></param>
/// <returns>true if the visit was successful</returns>
private bool VisitControl(int index, ControlVisitor visitor)
{
object obj = _controls[index];
if (obj is Control)
return visitor.VisitControl((Control)obj);
else if (obj is LightweightControl)
return visitor.VisitLightweightControl((LightweightControl)obj);
else
{
Debug.Fail("Unsupported control type detected: " + obj.GetType().Name);
return false;
}
}