/// <summary>
/// Delegate called when the notification count property changed.
/// </summary>
/// <param name="pObject">The modified object.</param>
/// <param name="pEventArgs">The event arguments.</param>
private static void OnNotificationCountChanged(DependencyObject pObject, DependencyPropertyChangedEventArgs pEventArgs)
{
NotificationCountRenderer lControl = pObject as NotificationCountRenderer;
if (lControl != null)
{
// Updating the content.
int lCount = (int)pEventArgs.NewValue;
lControl.UpdateRendering(lCount);
}
}
/// <summary>
/// Delegate called when the data context property changed.
/// </summary>
/// <param name="pObject">The modified object.</param>
/// <param name="pEventArgs">The event arguments.</param>
private static void OnDataContextChanged(DependencyObject pObject, DependencyPropertyChangedEventArgs pEventArgs)
{
NotificationCountRenderer lControl = pObject as NotificationCountRenderer;
NotifierViewModel lViewModel = pEventArgs.NewValue as NotifierViewModel;
if (lControl != null && lViewModel != null)
{
Binding lNotificationCountBinding = new Binding("Notifications.Count");
lNotificationCountBinding.Source = lViewModel;
lControl.SetBinding(NotificationCountProperty, lNotificationCountBinding);
lControl.UpdateRendering(lViewModel.Notifications.Count);
}
}
/// <summary>
/// Method called when the template of the control is applied.
/// </summary>
public override void OnApplyTemplate()
{
base.OnApplyTemplate();
this.mNotificationCountRenderer = this.GetTemplateChild(PART_NOTIFICATION_COUNT_RENDERER) as NotificationCountRenderer;
if (this.mNotificationCountRenderer == null)
{
throw new ArgumentException("The NotifierButton template is not valid.");
}
this.mNotificationCountRenderer.DataContext = this.ViewModel;
this.UpdateState(this.NotificationCount, this.NotificationCount);
}