public void Add(WxeStep step)
{
ArgumentUtility.CheckNotNull("step", step);
_steps.Add(step);
step.SetParentStep(this);
}
public void Insert(int index, WxeStep step)
{
if (_executingStep >= index)
{
throw new ArgumentException("Cannot insert step only after the last executed step.", "index");
}
ArgumentUtility.CheckNotNull("step", step);
_steps.Insert(index, step);
step.SetParentStep(this);
}
/// <summary>
/// Gets the first step of the specified type <typeparamref name="T"/>.
/// </summary>
/// <typeparam name="T">The type of step to get.</typeparam>
/// <param name="step">The step from which to start searching for the given step type <typeparamref name="T"/>.</param>
/// <returns>
/// The first <see cref="WxeStep"/> of the specified <typeparamref name="T"/> or <see langword="null"/> if the
/// neither the <paramref name="step"/> nor it's parent steps are of a matching type.
/// </returns>
protected static T GetStepByType <T> (WxeStep step)
where T : WxeStep
{
for (;
step != null;
step = step.ParentStep)
{
T expectedStep = step as T;
if (expectedStep != null)
{
return(expectedStep);
}
}
return(null);
}
public virtual void Initialize(HttpContext context)
{
if (ControlHelper.IsDesignMode(_control))
{
return;
}
ArgumentUtility.CheckNotNull("context", context);
if (_control is Page)
{
_wxeHandler = context.Handler as WxeHandler;
}
else
{
IWxePage wxePage = _control.Page as IWxePage;
if (wxePage == null)
{
throw new InvalidOperationException(string.Format("'{0}' can only be added to a Page implementing the IWxePage interface.", _control.GetType().FullName));
}
_wxeHandler = wxePage.WxeHandler;
}
if (_wxeHandler == null)
{
throw new HttpException(string.Format("No current WxeHandler found. Most likely cause of the exception: "
+ "The page '{0}' has been called directly instead of using a WXE Handler to invoke the associated WXE Function.",
_control.Page.GetType()));
}
WxeStep executingStep = _wxeHandler.RootFunction.ExecutingStep;
if (executingStep is WxeUserControlStep)
{
_currentUserControlStep = (WxeUserControlStep)executingStep;
_currentUserControlFunction = WxeStep.GetFunction(_currentUserControlStep);
_currentPageStep = _currentUserControlStep.PageStep;
}
else
{
_currentUserControlStep = null;
_currentUserControlFunction = null;
_currentPageStep = (WxePageStep)executingStep;
}
_currentPageFunction = WxeStep.GetFunction(_currentPageStep);
}
/// <summary> Gets the <see cref="WxeFunction"/> for the passed <see cref="WxeStep"/>. </summary>
/// <include file='..\doc\include\ExecutionEngine\WxeStep.xml' path='WxeStep/GetFunction/*' />
public static WxeFunction GetFunction(WxeStep step)
{
return(WxeStep.GetStepByType <WxeFunction> (step));
}
public void SetParentStep(WxeStep parentStep)
{
ArgumentUtility.CheckNotNull("parentStep", parentStep);
_parentStep = parentStep;
}