protected void ResetViewOrder(ObjectCollection collection)
{
int index = 0;
foreach (var item in collection)
{
// get view
GameObject view;
if (!bindingDictionary.TryGetValue(item, out view))
{
Debug.LogErrorFormat("Unknown item {0}", item);
continue;
}
view.transform.SetSiblingIndex(index++);
}
}
protected void AddItems(ObjectCollection collection)
{
// create view items
foreach (var item in collection)
{
GameObject view;
if (bindingDictionary.TryGetValue(item, out view))
{
if (viewReferenceCountDictionary == null)
{
// lazy initialization
InitViewReferenceCount();
}
// increase reference count
viewReferenceCountDictionary[view]++;
continue;
}
// create view
view = factory.CreateItemView(item);
// set source
var dataContext = view.GetComponent <IDataContext>();
dataContext.Source = item;
// add to dictionary
bindingDictionary.Add(item, view);
if (viewReferenceCountDictionary != null)
{
// set reference count to 1
viewReferenceCountDictionary.Add(view, 1);
}
}
if (viewReferenceCountDictionary != null)
{
Assert.AreEqual(bindingDictionary.Count, viewReferenceCountDictionary.Count);
}
}
protected virtual void AddItems(ObjectCollection collection)
{
foreach (var item in collection)
{
// get TSource
var source = GetSource(item);
TTarget target;
if (sourceToTargetMap.TryGetValue(source, out target))
{
if (referenceCountDictionary == null)
{
// lazy initialization
InitReferenceCount();
}
// increase reference count
referenceCountDictionary[target]++;
continue;
}
// call create
target = CreateTarget(source);
// add it
targetCollection.Add(target);
sourceToTargetMap.Add(source, target);
if (referenceCountDictionary != null)
{
// set reference count to 1
referenceCountDictionary.Add(target, 1);
}
}
if (referenceCountDictionary != null)
{
Assert.AreEqual(sourceToTargetMap.Count, referenceCountDictionary.Count);
}
}
/// <summary>
/// Begins synchronizing.
/// </summary>
public void BeginSync()
{
if (isSyncing)
{
// already started
return;
}
// register event
sourceCollection.CollectionChanged += OnSourceCollectionChanged;
// clear targets
ClearItems();
// add all
var items = new ObjectCollection(sourceCollection);
AddItems(items);
// set flag
isSyncing = true;
}
protected virtual void MoveItems(ObjectCollection collection)
{
// do nothing
}
protected virtual void ReplaceItems(ObjectCollection oldItems, ObjectCollection newItems)
{
RemoveItems(oldItems);
AddItems(newItems);
}
protected void ResetViewOrder(IEnumerable items)
{
var collection = new ObjectCollection(items);
ResetViewOrder(collection);
}
protected void MoveItems(ObjectCollection collection)
{
ResetViewOrder(collection);
}
protected void AddItems(IEnumerable items)
{
var collection = new ObjectCollection(items);
AddItems(collection);
}
