//IDisposable commandSubscription;
protected override void OnAttached()
{
base.OnAttached();
// TryLocatePageFromButton();
var binding = new Binding();
binding.Source = AssociatedObject;
binding.Path = new PropertyPath("IsEnabled");
BindingOperations.SetBinding(this, IsEnabledProperty, binding);
AssociatedObject.Loaded += (s, e) =>
{
this.IsBindingActive = true;
TryLocatePageFromButton();
var appb = GetApplicationBar(Page);
if (appb.Buttons != null)
{
Buttons = appb.Buttons.OfType <IApplicationBarIconButton>().ToList();
}
if (appb.MenuItems != null)
{
MenuItems = appb.MenuItems.OfType <IApplicationBarMenuItem>().ToList();
}
RefreshApplicationBar(this);
eventSubscribe = EventRouting.EventRouter.Instance
.GetEventObject <EventCommandEventArgs>()
.ObserveOn(System.Reactive.Concurrency.DispatcherScheduler.Current)
.Where(_ =>
IsBindingActive)
.Where(x =>
x.EventName == EventFilterName)
.Where(
x =>
(x.Sender is IApplicationBarIconButton && this.TargetType == BindToApplicationBarTarget.IconButton) || (!(x.Sender is IApplicationBarIconButton) && this.TargetType == BindToApplicationBarTarget.MenuItem))
.Where(ev =>
{
if (ev.EventArgs != null)
{
switch (TargetType)
{
case BindToApplicationBarTarget.IconButton:
return(Page.ApplicationBar.Buttons.IndexOf(ev.Sender) == IndexBindTo);
case BindToApplicationBarTarget.MenuItem:
return(Page.ApplicationBar.MenuItems.IndexOf(ev.Sender) == IndexBindTo);
default:
return(false);
}
}
return(false);
})
.Subscribe(
ev =>
{
var args = ev.EventArgs;
var cb = new CommandBinding()
{
EventName = args.EventName,
EventSource = Page,
Parameter = args.Parameter,
Command = AssociatedObject.Command,
};
cb.ExecuteFromEvent(args.ViewSender, args.EventArgs, args.EventName, args.EventHandlerType);
//if (AssociatedObject.Command != null)
//{
// if (AssociatedObject.Command.CanExecute(AssociatedObject.CommandParameter))
// {
// AssociatedObject.Command.Execute(AssociatedObject.CommandParameter);
// }
//}
});
if (!GetHasEventsWired(Page))
{
PageSetup();
SetHasEventsWired(Page, true);
}
return;
};
}