private bool WaitForOffsetToSettle(Edit text, double millisecondsTimeout, bool failOnError)
{
Wait.ForIdle();
const double millisecondsNormalStepTimeout = 100;
const double millisecondsIdleStepTimeout = 600;
ValueChangedEventWaiter waiter = new ValueChangedEventWaiter(text);
int unsuccessfulWaits = 0;
int maxUnsuccessfulWaits = (int)(millisecondsIdleStepTimeout / millisecondsNormalStepTimeout);
Log.Comment("Original State: " + elements.GetScrollViewerStateTextBox().GetText());
Log.Comment("Original Offset: " + text.Value);
// When the initial State is still Idle, use a longer timeout to allow it to transition out of Idle.
double millisecondsWait = (elements.GetScrollViewerStateTextBox().GetText() == "Idle") ? millisecondsIdleStepTimeout : millisecondsNormalStepTimeout;
double millisecondsCumulatedWait = 0;
do
{
Log.Comment("Waiting for Offset change.");
waiter.Reset();
if (waiter.TryWait(TimeSpan.FromMilliseconds(millisecondsWait)))
{
unsuccessfulWaits = 0;
}
else
{
unsuccessfulWaits++;
}
millisecondsCumulatedWait += millisecondsWait;
millisecondsWait = millisecondsNormalStepTimeout;
Log.Comment("Current State: " + elements.GetScrollViewerStateTextBox().GetText());
Log.Comment("Current Offset: " + text.Value);
Wait.ForIdle();
}while (elements.GetScrollViewerStateTextBox().GetText() != "Idle" &&
millisecondsCumulatedWait < millisecondsTimeout &&
unsuccessfulWaits <= maxUnsuccessfulWaits);
if (elements.GetScrollViewerStateTextBox().GetText() == "Idle")
{
Log.Comment("Idle State reached after " + millisecondsCumulatedWait + " out of " + millisecondsTimeout + " milliseconds. Final Offset: " + text.Value);
return(true);
}
else
{
string message = unsuccessfulWaits > maxUnsuccessfulWaits ?
"Offset has not changed within " + millisecondsIdleStepTimeout + " milliseconds outside of Idle State." :
"Idle State was not reached within " + millisecondsTimeout + " milliseconds.";
if (failOnError)
{
Log.Error(message);
}
else
{
Log.Warning(message);
}
return(false);
}
}
