private void ClearHistory()
{
history.Clear();
actualHistoryItem = null;
backButton.IsEnabled = false;
HomeCommand.ChangeCanExecute();
ClearCacheCommand.ChangeCanExecute();
}
private bool PopHistoryItem()
{
if (history.Count >= 1)
{
HistoryItem item = history.Last();
switch (item.Type)
{
case HistoryType.Search:
Search((string)item.Value, false);
break;
case HistoryType.Number:
ShowByNumber((int)item.Value, false);
break;
case HistoryType.Key:
ShowByKey((string)item.Value, false);
break;
case HistoryType.Random:
ShowRandomRule((int?)item.Value, false);
break;
}
/*list.UpdateLayout();
* ScrollViewer scrollViewer = VisualTreeHelper.GetChild(VisualTreeHelper.GetChild(list, 0), 0) as ScrollViewer;
* scrollViewer?.ChangeView(null, item.VerticalOffset, null, true);*/
//list.ScrollTo(item.Value, ScrollToPosition.Center, true);
//list.SelectedItem = item.Value;
history.RemoveAt(history.Count() - 1);
actualHistoryItem = item;
backButton.IsEnabled = history.Count > 0;
HomeCommand.ChangeCanExecute();
return(true);
}
return(false);
}
private void PushHistoryItem(HistoryItem historyItem)
{
/*SystemNavigationManager.GetForCurrentView().AppViewBackButtonVisibility =
* AppViewBackButtonVisibility.Visible;
* ScrollViewer scrollViewer =
* VisualTreeHelper.GetChild(VisualTreeHelper.GetChild(list, 0), 0) as ScrollViewer;
* if (scrollViewer != null)
* actualSearch.VerticalOffset = scrollViewer.VerticalOffset;*/
if (actualHistoryItem == null || historyItem == null || (!actualHistoryItem.Type.Equals(historyItem.Type) || !actualHistoryItem.Value.Equals(historyItem.Value)))
{
if (actualHistoryItem != null)
{
history.Add(actualHistoryItem);
backButton.IsEnabled = true;
}
actualHistoryItem = historyItem;
HomeCommand.ChangeCanExecute();
}
}
