public static bool ScrollForElement(this IApp app, string query, Drag drag, int maxSteps = 25)
{
int count = 0;
int centerTolerance = 50;
Func <AppQuery, AppQuery> elementQuery = q => q.Raw(query);
// Visible elements
if (app.Query(elementQuery).Length > 1)
{
throw new UITestQueryMultipleResultsException(query);
}
// check to see if the element is visible already
if (app.Query(elementQuery).Length == 1)
{
// centering an element whos CenterX is close to the bounding rectangle's center X can sometime register the swipe as a tap
float elementDistanceToDragCenter = Math.Abs(app.Query(elementQuery).First().Rect.CenterY - drag.DragBounds.CenterY);
if (elementDistanceToDragCenter > centerTolerance)
{
app.CenterElementInView(elementQuery, drag.DragBounds, drag.DragDirection);
}
return(true);
}
// loop until element is seen
while (app.Query(elementQuery).Length == 0 && count < maxSteps)
{
app.DragCoordinates(drag.XStart, drag.YStart, drag.XEnd, drag.YEnd);
count++;
}
if (count != maxSteps)
{
// centering an element whos CenterX is close to the bounding rectangle's center X can sometime register the swipe as a tap
float elementDistanceToDragCenter = Math.Abs(app.Query(elementQuery).First().Rect.CenterY - drag.DragBounds.CenterY);
if (elementDistanceToDragCenter > centerTolerance)
{
app.CenterElementInView(elementQuery, drag.DragBounds, drag.DragDirection);
}
return(true);
}
count = 0;
drag.DragDirection = drag.OppositeDirection;
while (app.Query(elementQuery).Length == 0 && count < maxSteps)
{
app.DragCoordinates(drag.XStart, drag.YStart, drag.XEnd, drag.YEnd);
count++;
}
if (count != maxSteps)
{
app.CenterElementInView(elementQuery, drag.DragBounds, drag.DragDirection);
return(true);
}
return(false);
}
public static void Pan(this IApp app, Drag drag)
{
app.DragCoordinates(drag.XStart, drag.YStart, drag.XEnd, drag.YEnd);
}
