/// <summary>
/// Determines how best to support navigation back to the previous application state.
/// </summary>
public static void Activate(String queryText, ApplicationExecutionState previousExecutionState)
{
UIElement previousContent = Window.Current.Content;
var frame = previousContent as Frame;
if (frame != null)
{
// If the app is already running and uses top-level frame navigation we can just
// navigate to the search results
frame.Navigate(typeof(SearchResultsPage), queryText);
}
else
{
// Otherwise bypass navigation and provide the tools needed to emulate the back stack
var page = new SearchResultsPage
{
_previousContent = previousContent, _previousExecutionState = previousExecutionState
};
page.LoadState(queryText, null);
Window.Current.Content = page;
}
// Either way, active the window
Window.Current.Activate();
}
/// <summary>
/// Invoked when the application is activated to display search results.
/// </summary>
/// <param name="args">Details about the activation request.</param>
protected override void OnSearchActivated(SearchActivatedEventArgs args)
{
if (DataSource == null)
{
DataSource = new SampleDataSource();
Windows.ApplicationModel.Search.SearchPane.GetForCurrentView().QuerySubmitted +=
(sender, queryArgs) => SearchResultsPage.Activate(queryArgs.QueryText, args.PreviousExecutionState);
var previousContent = Window.Current.Content;
var frame = previousContent as Frame;
if (frame == null)
{
frame = new Frame();
Window.Current.Content = frame;
}
frame.Navigate(typeof(SearchResultsPage), new Tuple <String, UIElement>(args.QueryText, previousContent));
Window.Current.Activate();
}
else
{
SearchResultsPage.Activate(args.QueryText, args.PreviousExecutionState);
}
}
