public ShellSectionCollection()
{
VisibleItems = new ReadOnlyCollection <ShellSection>(_visibleContents);
_visibleContents.CollectionChanged += (_, args) =>
{
VisibleItemsChanged?.Invoke(VisibleItems, args);
};
}
public ShellContentCollection()
{
_inner.CollectionChanged += InnerCollectionChanged;
VisibleItems = new ReadOnlyCollection <ShellContent>(_visibleContents);
_visibleContents.CollectionChanged += (_, args) =>
{
VisibleItemsChanged?.Invoke(VisibleItems, args);
};
}
void OnVisibleItemsChanged(NotifyCollectionChangedEventArgs args)
{
VisibleItemsChangedInternal?.Invoke(VisibleItems, args);
VisibleItemsChanged?.Invoke(VisibleItems, args);
}
public void RangesChanged(ItemIndexRange visibleRange, IReadOnlyList <ItemIndexRange> trackedItems)
{
VisibleItems = visibleRange;
VisibleItemsChanged?.Invoke(this, visibleRange);
}
