private static void CollectionViewItemsSourceChanged(UICollectionView collectionView, AttachedMemberChangedEventArgs <IEnumerable> args)
{
if (collectionView.Source == null)
{
collectionView.Source = CollectionViewSourceBase.Factory(collectionView, DataContext.Empty);
}
var source = collectionView.Source as ItemsSourceCollectionViewSource;
if (source != null)
{
source.ItemsSource = args.NewValue;
}
}
private static void RegisterCollectionViewMembers(IBindingMemberProvider memberProvider)
{
BindingServiceProvider.ResourceResolver.AddType(typeof(UICollectionViewScrollPosition));
BindingServiceProvider.ResourceResolver.AddType(typeof(UICollectionViewScrollDirection));
BindingServiceProvider.BindingMemberPriorities[AttachedMembers.UICollectionView.UseAnimations] = BindingServiceProvider.TemplateMemberPriority + 1;
BindingServiceProvider.BindingMemberPriorities[AttachedMembers.UICollectionView.ScrollPosition] = BindingServiceProvider.TemplateMemberPriority + 1;
//UICollectionView
BindingBuilderExtensions.RegisterDefaultBindingMember(AttachedMembers.UIView.ItemsSource.Override <UICollectionView>());
memberProvider.Register(AttachedBindingMember.CreateAutoProperty(AttachedMembers.UICollectionView.UseAnimations));
memberProvider.Register(AttachedBindingMember.CreateAutoProperty(AttachedMembers.UICollectionView.ScrollPosition));
memberProvider.Register(AttachedBindingMember.CreateEvent(AttachedMembers.UICollectionView.SelectedItemChangedEvent));
memberProvider.Register(AttachedBindingMember.CreateAutoProperty(AttachedMembers.UIView.ItemsSource.Override <UICollectionView>(), CollectionViewItemsSourceChanged));
memberProvider.Register(AttachedBindingMember.CreateMember(AttachedMembers.UICollectionView.SelectedItem,
GetCollectionViewSelectedItem, SetCollectionViewSelectedItem, (info, view, arg3) => (IDisposable)view.SetBindingMemberValue(AttachedMembers.UICollectionView.SelectedItemChangedEvent, arg3)));
var itemTemplateMember = AttachedBindingMember.CreateAutoProperty(AttachedMembers.UICollectionView.ItemTemplateSelector, (view, args) => args.NewValue?.Initialize(view));
memberProvider.Register(itemTemplateMember);
memberProvider.Register(typeof(UICollectionView), AttachedMemberConstants.ItemTemplate, itemTemplateMember, true);
//UICollectionViewCell
memberProvider.Register(AttachedBindingMember.CreateEvent(AttachedMembers.UICollectionViewCell.ClickEvent));
memberProvider.Register(AttachedBindingMember
.CreateNotifiableMember(AttachedMembers.UICollectionViewCell.Selected, (info, cell) =>
{
if (CollectionViewSourceBase.HasMask(cell, CollectionViewSourceBase.InitializingStateMask))
{
return(null);
}
var cellBindable = cell as UICollectionViewCellBindable;
if (cellBindable == null)
{
return(cell.Selected);
}
return(cellBindable.SelectedBind.GetValueOrDefault());
},
(info, cell, arg3) =>
{
var cellBindable = cell as UICollectionViewCellBindable;
if (cellBindable == null)
{
cell.Selected = arg3.GetValueOrDefault();
}
else
{
cellBindable.SelectedBind = arg3;
}
return(true);
}));
memberProvider.Register(AttachedBindingMember
.CreateNotifiableMember(AttachedMembers.UICollectionViewCell.Highlighted, (info, cell) => cell.Highlighted,
(info, cell, arg3) =>
{
cell.Highlighted = arg3;
return(true);
}));
memberProvider.Register(AttachedBindingMember.CreateAutoProperty(AttachedMembers.UICollectionViewCell.ShouldHighlight));
memberProvider.Register(AttachedBindingMember.CreateAutoProperty(AttachedMembers.UICollectionViewCell.ShouldDeselect));
memberProvider.Register(AttachedBindingMember.CreateAutoProperty(AttachedMembers.UICollectionViewCell.ShouldSelect));
}
