/// <summary>
/// Populates the page with content passed during navigation. Any saved state is also
/// provided when recreating a page from a prior session.
/// </summary>
/// <param name="navigationParameter">
/// The parameter value passed to
/// <see cref="Frame.Navigate(Type, Object)" /> when this page was initially requested.
/// </param>
/// <param name="pageState">
/// A dictionary of state preserved by this page during an earlier
/// session. This will be null the first time a page is visited.
/// </param>
protected override async void LoadState(Object navigationParameter, Dictionary<String, Object> pageState)
{
var r = navigationParameter as SearchResult;
if (r != null)
{
r.ResetAssumptionSelections();
Result = r;
//ShowResults();
return;
}
var query = navigationParameter as string;
if (pageState != null && pageState.ContainsKey("result"))
{
Result = pageState["result"] as SearchResult;
Result.ResetAssumptionSelections();
_history = pageState["history"] as Stack<SearchResult>;
}
else
{
Result = new SearchResult(query) {NumRows = (int) Math.Floor((Window.Current.Bounds.Height - 186) / 150)};
await Result.RunSearch();
_history.Push(new SearchResult(Result));
}
ShowResults();
}
private void CustomGoBack(object sender, RoutedEventArgs e)
{
if (_history.Count > 1)
{
_history.Pop();
Result = _history.Peek();
Result.ResetAssumptionSelections();
_firstLoad = true;
}
else
{
Frame.GoBack();
}
}
