public static void SetFocusToFocusScope(IInputElement newFocus)
{
UIElement newElementFocus = newFocus as UIElement;
if (newElementFocus != null)
{
UIElement focusScope = FocusManager.GetFocusScope(newElementFocus) as UIElement;
int priority = FocusScopeManager.GetFocusScopePriority(focusScope);
if (priority != FocusScopeManager.DefaultFocusScopePriority)
{
FocusScopeManager.Instance.OnScopeKeyboardFocusChanged(focusScope, priority);
}
}
}
private bool IsFocusScopeManaged(UIElement focusScope, int priority, int priorityStartIndex)
{
for (int curScopeIndex = priorityStartIndex; curScopeIndex < this.scopes.Count; curScopeIndex++)
{
WeakReference curRef = this.scopes[curScopeIndex];
if (curRef.IsAlive)
{
UIElement curTarget = (UIElement)curRef.Target;
if (FocusScopeManager.GetFocusScopePriority(curTarget) > priority)
{
return(false);
}
if (curTarget == focusScope)
{
return(true);
}
}
}
return(false);
}
private int FindStartIndexForPriority(int priority)
{
int startIndex = 0;
for (; startIndex < this.scopes.Count; startIndex++)
{
WeakReference curRef = this.scopes[startIndex];
if (curRef.IsAlive)
{
if (FocusScopeManager.GetFocusScopePriority((UIElement)curRef.Target) >= priority)
{
break;
}
}
else
{
this.listContainsDeadReferences = true;
}
}
return(startIndex);
}
