private void Vms_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e) {
var collection = (IList)sender;
e.Apply(
//insert
(o, i, b) => {
Insert(o, i, b);
},
//remove
(o, i) => {
Remove(o, i);
},
//reset
() => {
Reset(collection);
});
}
void OnPagesChanged(object sender, NotifyCollectionChangedEventArgs e)
{
_ignoreNativeScrolling = true;
NotifyCollectionChangedAction action = e.Apply((o, i, c) => InsertPage((ContentPage)o, i), (o, i) => RemovePage((ContentPage)o, i), Reset);
PositionChildren();
_ignoreNativeScrolling = false;
if (action == NotifyCollectionChangedAction.Reset)
{
int index = Carousel.CurrentPage != null ? CarouselPage.GetIndex(Carousel.CurrentPage) : 0;
if (index < 0)
index = 0;
ScrollToPage(index);
}
}
void OnPagesChanged(object sender, NotifyCollectionChangedEventArgs e)
{
e.Apply((o, i, c) => SetupPage((Page)o, i), (o, i) => TeardownPage((Page)o, i), Reset);
SetControllers();
UIViewController controller = null;
if (Tabbed.CurrentPage != null)
controller = GetViewController(Tabbed.CurrentPage);
if (controller != null && controller != base.SelectedViewController)
base.SelectedViewController = controller;
}
void OnPagesChanged(object sender, NotifyCollectionChangedEventArgs e)
{
e.Apply(Element.Children, Control.Items);
// Potential performance issue, UpdateLayout () is called for every page change
Control.UpdateLayout();
}
void OnPagesChanged(object sender, NotifyCollectionChangedEventArgs e)
{
e.Apply(Page.Children, _tabs.Items);
}
void OnChildrenChanged(object sender, NotifyCollectionChangedEventArgs e)
{
e.Apply(Element.Children, Items);
}