private static void RefreshApplicationBar(BindToAppliactionBarBehavior behavior)
{
switch (behavior.TargetType)
{
case BindToApplicationBarTarget.IconButton:
{
var lst = behavior.Buttons;
if (lst != null)
{
if (behavior.IndexBindTo < lst.Count && behavior.IndexBindTo >= 0)
{
var item = lst[behavior.IndexBindTo];
if (item.IconUri != behavior.IconUri)
{
if (behavior.IconUri != null)
{
item.IconUri = behavior.IconUri;
}
}
;
if (item.IsEnabled != behavior.IsEnabled)
{
item.IsEnabled = behavior.IsEnabled;
}
;
if (item.Text != behavior.Text && behavior.Text != null)
{
item.Text = behavior.Text;
}
;
}
}
}
break;
case BindToApplicationBarTarget.MenuItem:
{
var lst = behavior.MenuItems;
if (lst != null)
{
if (behavior.IndexBindTo < lst.Count && behavior.IndexBindTo >= 0)
{
var item = lst[behavior.IndexBindTo];
if (item.IsEnabled != behavior.AssociatedObject.IsEnabled)
{
item.IsEnabled = behavior.AssociatedObject.IsEnabled;
}
;
if (item.Text != behavior.Text)
{
item.Text = behavior.Text;
}
;
}
}
}
break;
default:
break;
}
}
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();
eventSubscribe = EventRouting.EventRouter.Instance
.GetEventObject <IApplicationBarMenuItem>()
.ObserveOn(System.Reactive.Concurrency.DispatcherScheduler.Current)
.Where(_ => IsBindingActive)
.Where(x => x.EventName == EventFilterName)
.Where(x => BindToAppliactionBarBehavior.GetHasEventsWired(Page))
.Select(ev =>
{
int idx = -1;
if (ev.EventArgs != null)
{
InstanceToIndexDic.TryGetValue(ev.EventArgs, out idx);
}
return(new { innerev = ev, idx });
}
)
.Where(ev => ev.idx == IndexBindTo)
.Subscribe(
ev =>
{
if (AssociatedObject.Command != null)
{
if (AssociatedObject.Command.CanExecute(AssociatedObject.CommandParameter))
{
AssociatedObject.Command.Execute(AssociatedObject.CommandParameter);
}
}
});
var appb = GetApplicationBar(Page);
if (appb == null)
{
return;
}
if (appb.Buttons != null)
{
Buttons = appb.Buttons.OfType <IApplicationBarIconButton>().ToList();
var i = 0;
foreach (IApplicationBarIconButton btn in appb.Buttons)
{
WireEventToItem(btn);
InstanceToIndexDic[btn] = i;
i++;
}
}
if (appb.MenuItems != null)
{
MenuItems = appb.MenuItems.OfType <IApplicationBarMenuItem>().ToList();
var i = 0;
foreach (IApplicationBarMenuItem itm in appb.MenuItems)
{
WireEventToItem(itm);
InstanceToIndexDic[itm] = i;
i++;
}
}
RefreshApplicationBar(this);
BindToAppliactionBarBehavior.SetHasEventsWired(Page, true);
};
}
