public void BindApplicationBar(IApplicationBarViewModel viewModel)
{
if (viewModel == null)
{
return;
}
if (this.Page == null || this.Page.ApplicationBar == null)
{
return;
}
if (this.Page.ApplicationBar.IsMenuEnabled)
{
var appBarViewModel = (IApplicationBarViewModel)viewModel;
this.RefreshButtons(appBarViewModel);
this.appBarSubscriptions.Add(
Observable.FromEvent <NotifyCollectionChangedEventHandler, NotifyCollectionChangedEventArgs>(
handler => new NotifyCollectionChangedEventHandler(handler),
handler => appBarViewModel.ApplicationBarButtonCommands.CollectionChanged += handler,
handler => appBarViewModel.ApplicationBarButtonCommands.CollectionChanged -= handler).
ObserveOnDispatcher().Subscribe(_ => this.RefreshButtons(appBarViewModel)));
this.RefreshMenuItems(appBarViewModel);
this.appBarSubscriptions.Add(
Observable.FromEvent <NotifyCollectionChangedEventHandler, NotifyCollectionChangedEventArgs>(
handler => new NotifyCollectionChangedEventHandler(handler),
handler => appBarViewModel.ApplicationBarMenuCommands.CollectionChanged += handler,
handler => appBarViewModel.ApplicationBarMenuCommands.CollectionChanged -= handler).
ObserveOnDispatcher().Subscribe(_ => this.RefreshMenuItems(appBarViewModel)));
}
}
private void RefreshButtons(IApplicationBarViewModel viewModel)
{
if (this.Page == null || this.Page.ApplicationBar == null)
{
return;
}
this.Page.ApplicationBar.Buttons.Clear();
foreach (var commandLink in viewModel.ApplicationBarButtonCommands)
{
this.AddApplicationBarButton(commandLink);
}
}
private void RefreshMenuItems(IApplicationBarViewModel appBarViewModel)
{
if (this.Page == null || this.Page.ApplicationBar == null)
{
return;
}
this.Page.ApplicationBar.MenuItems.Clear();
foreach (var commandLink in appBarViewModel.ApplicationBarMenuCommands)
{
this.AddApplicationBarMenu(commandLink);
}
}
/// <summary>
/// Initializes a new instance of the ApplicationBarBinder class.
/// </summary>
public ApplicationBarBinder(PhoneApplicationPage page, IApplicationBarViewModel viewModel)
: this(page)
{
this.BindApplicationBar(viewModel);
}
