/// <summary>
/// Construct an instance of the MainPage view
/// </summary>
public MainPage()
{
InitializeComponent();
// Setup custom strings to replace some of PivotViewer's default strings (comment this line to use all defaults)
System.Windows.Pivot.PivotViewer.SetResourceManager(SampleLocalizedStrings.ResourceManager);
// Load the initial collection
string initialCollectionUri;
if (!App.Current.Host.InitParams.TryGetValue("initialCollectionUri", out initialCollectionUri))
{
// Otherwise use the default startup collection
initialCollectionUri = s_defaultStartupCollectionUri.ToString();
}
PivotViewer.LoadCollection(initialCollectionUri, string.Empty);
PivotViewer.CollectionLoadingFailed += new EventHandler <CollectionErrorEventArgs>(PivotViewer_CollectionLoadingFailed);
// Enable the shopping cart (comment this line to disable the shopping cart)
ShoppingCart.Create(PivotViewer);
// Enable the travel log (comment this line to disable the travel log)
TravelLog.Create(PivotViewer, new Uri(initialCollectionUri));
}
/// <summary>
/// Helper to load a collection from a Uri that may contain a viewerState fragment
/// </summary>
private void LoadCollection(string collectionUri)
{
string baseCollectionUri;
string viewerState;
BreakupCollectionUri(collectionUri, out baseCollectionUri, out viewerState);
PivotViewer.LoadCollection(baseCollectionUri, viewerState);
}
private PivotViewerHistory(PivotViewer pivotViewer, Uri initialCollectionUri)
{
_pivotViewer = pivotViewer;
_history = new Dictionary<string, PivotViewerHistoryEntry>();
_currentHistoryEntry = new PivotViewerHistoryEntry(initialCollectionUri, string.Empty);
_pivotViewer.PropertyChanged += OnPropertyChanged;
App.Current.Host.NavigationStateChanged += OnHostNavigationStateChanged;
}
/// <summary>
/// Construct a TravelLog connected to a PivotViewer
/// </summary>
private TravelLog(PivotViewer pivotViewer, Uri initialCollectionUri)
{
m_pivotViewer = pivotViewer;
m_travelLog = new Dictionary<string, TravelLogEntry>();
m_currentTravelLogEntry = new TravelLogEntry(initialCollectionUri, string.Empty);
// Hook the events that are needed to implement travel log
m_pivotViewer.PropertyChanged += new PropertyChangedEventHandler(PivotViewer_PropertyChanged);
App.Current.Host.NavigationStateChanged += OnHostNavigationStateChanged;
}
/// <summary>
/// Construct a TravelLog connected to a PivotViewer
/// </summary>
private TravelLog(PivotViewer pivotViewer, Uri initialCollectionUri)
{
m_pivotViewer = pivotViewer;
m_travelLog = new Dictionary <string, TravelLogEntry>();
m_currentTravelLogEntry = new TravelLogEntry(initialCollectionUri, string.Empty);
// Hook the events that are needed to implement travel log
m_pivotViewer.PropertyChanged += new PropertyChangedEventHandler(PivotViewer_PropertyChanged);
App.Current.Host.NavigationStateChanged += OnHostNavigationStateChanged;
}
/// <summary>
/// Create a singleton instance of the PivotViewerHistory and connect it to a PivotViewer. Because PivotViewerHistory
/// reads/writes App.Current.Host.NavigationState, there should only be one instance of PivotViewerHistory in
/// an application.
/// </summary>
public static void Create(PivotViewer pivotViewer, Uri initialCollectionUri)
{
if (_instance != null)
throw new InvalidOperationException("PivotViewerHistory interacts with the application state, there should only be one instance in an application");
if (pivotViewer.CollectionUri != null)
throw new InvalidOperationException("PivotViewerHistory should be connected to a PivotViewer before it has loaded a collection");
_instance = new PivotViewerHistory(pivotViewer, initialCollectionUri);
}
/// <summary>
/// Create a singleton instance of the TravelLog and connect it to a PivotViewer. Because TravelLog
/// reads/writes App.Current.Host.NavigationState, there should only be one instance of TravelLog in
/// an application.
/// </summary>
public static void Create(PivotViewer pivotViewer, Uri initialCollectionUri)
{
if (s_instance != null)
{
throw new InvalidOperationException("TravelLog interacts with the application state, there should only be one instance in an application");
}
if (pivotViewer.CollectionUri != null)
{
throw new InvalidOperationException("TravelLog should be connected to a PivotViewer before it has loaded a collection");
}
s_instance = new TravelLog(pivotViewer, initialCollectionUri);
}
/// <summary>
/// Create a singleton instance of the TravelLog and connect it to a PivotViewer. Because TravelLog
/// reads/writes App.Current.Host.NavigationState, there should only be one instance of TravelLog in
/// an application.
/// </summary>
public static void Create(PivotViewer pivotViewer, Uri initialCollectionUri)
{
if (s_instance != null)
{
throw new InvalidOperationException("TravelLog interacts with the application state, there should only be one instance in an application");
}
if (pivotViewer.CollectionUri != null)
{
throw new InvalidOperationException("TravelLog should be connected to a PivotViewer before it has loaded a collection");
}
s_instance = new TravelLog(pivotViewer, initialCollectionUri);
}
/// <summary>
/// Handle double-clicks on collection items
/// </summary>
private void PivotViewer_ItemDoubleClicked(object sender, ItemEventArgs args)
{
string linkUriString = PivotViewer.GetItem(args.ItemId).Href;
if (!string.IsNullOrWhiteSpace(linkUriString))
{
PivotViewer.CurrentItemId = args.ItemId;
OpenLink(linkUriString);
}
else
{
ErrorWindow errorWin = new ErrorWindow("No Associated Web Page", "The item that was double-clicked has no value for the 'Href' field");
errorWin.Show();
}
}
/// <summary>
/// Handle a custom action execution
/// </summary>
private void PivotViewer_ItemActionExecuted(object sender, ItemActionEventArgs args)
{
PivotViewer pivotViewer = (PivotViewer)sender;
// Add or remove the item from the cart, depending the action Id.
if (args.CustomActionId == AddItemActionId)
{
m_itemIdsInCart.Add(args.ItemId);
}
else if (args.CustomActionId == RemoveItemActionId)
{
m_itemIdsInCart.Remove(args.ItemId);
}
// After an action has been executed, the ListBox is stale, so update it
RefreshCartContentsListBox();
}
/// <summary>
/// Apply pre-defined "American Cars" filter to new cars collection
/// </summary>
private void OnAmericanCarsClicked(object sender, RoutedEventArgs args)
{
PivotViewer.LoadCollection(s_bingNewCarsCollectionUri.ToString(), c_americanCarsViewerState);
}
/// <summary>
/// Load AMG Top-rated movies collection
/// </summary>
private void OnAMGTopMoviesClicked(object sender, RoutedEventArgs args)
{
PivotViewer.LoadCollection(s_AMGMoviesCollectionUri.ToString(), string.Empty);
}
/// <summary>
/// Load new cars collection
/// </summary>
private void OnCarsCollectionClicked(object sender, RoutedEventArgs args)
{
PivotViewer.LoadCollection(s_bingNewCarsCollectionUri.ToString(), string.Empty);
}
