public void GoToItem(PivotItem item)
{
if (item == null || item == selectedItem)
return;
var widthToScroll = 0.0;
int index;
for (index = 0; index < Items.Count; index++)
{
if (Items[index] == item)
{
internalIndex = index;
break;
}
widthToScroll += ((PivotItem)Items[index]).ActualWidth;
}
mediator.HorizontalOffset = scroller.HorizontalOffset;
var sb = mediator.Resources["Storyboard1"] as Storyboard;
var frame = (EasingDoubleKeyFrame)mediator.FindName("edkf");
frame.Value = widthToScroll;
sb.Completed -= sb_Completed;
sb.Completed += sb_Completed;
sb.Begin();
RaiseEvent(new RoutedEventArgs(SelectionChangedEvent));
}
void scroller_ScrollChanged(object sender, ScrollChangedEventArgs e)
{
var position = 0.0;
for (int i = 0; i < Items.Count; i++)
{
var pivotItem = ((PivotItem)Items[i]);
var widthOfItem = pivotItem.ActualWidth;
if (e.HorizontalOffset <= (position + widthOfItem - 1))
{
selectedItem = pivotItem;
if (headers.SelectedItem != selectedItem)
{
headers.SelectedItem = selectedItem;
internalIndex = i;
SelectedIndex = i;
RaiseEvent(new RoutedEventArgs(SelectionChangedEvent));
}
break;
}
position += widthOfItem;
}
}