/// <summary>
/// Checks if an adapter is available from the recycled list otherwise creates an instance of one
/// </summary>
/// <returns></returns>
private AbstractScrollViewAdapter GetAdapter()
{
if (this.adaptersPoolContainer.transform.childCount > 0)
{
// Manually find a child adaptor if possible (GetComponentInChildren doesn't work)
foreach (Transform child in this.adaptersPoolContainer.transform)
{
if (null != child)
{
AbstractScrollViewAdapter childAdapter = child.GetComponent<AbstractScrollViewAdapter>() as AbstractScrollViewAdapter;
if (null != childAdapter)
{
return childAdapter;
}
}
}
}
AbstractScrollViewAdapter adapter = Instantiate<AbstractScrollViewAdapter>(this.baseAdapter) as AbstractScrollViewAdapter;
adapter.gameObject.SetActive(false);
adapter.transform.SetParent(this.adaptersPoolContainer.transform);
adapter.SetContext(this);
return adapter;
}
/// <summary>
/// Checks what anchors are visible and adds adaptors to them if they don't already have them
/// </summary>
private void RefreshAdapters()
{
for (int i = 0, max = Mathf.Min(this.itemCount, this.anchors.Count); i < max; ++i)
{
RectTransform anchor = this.anchors[i];
bool isAnchorActive = this.EvaluateAdapterAtPosition(anchor);
bool isAnchorSetup = anchor.childCount > 0;
if (isAnchorActive && isAnchorSetup || !isAnchorActive && !isAnchorSetup)
{
continue;
}
if (isAnchorActive && !isAnchorSetup)
{
AbstractScrollViewAdapter adapter = this.GetAdapter();
adapter.transform.SetParent(anchor);
adapter.Setup(this.dataSource.GetItem(i));
adapter.gameObject.SetActive(true);
continue;
}
if(!isAnchorActive && isAnchorSetup)
{
AbstractScrollViewAdapter adapter = anchor.GetComponentInChildren<AbstractScrollViewAdapter>() as AbstractScrollViewAdapter;
if(null != adapter)
{
this.DisposeAdapter(adapter);
}
}
}
}
/// <summary>
/// Recycles and removes an adapter returning it to the pool
/// </summary>
/// <param name="adapter">the adapter to return to the pool</param>
internal void DisposeAdapter(AbstractScrollViewAdapter adapter)
{
if (null == adapter)
{
return;
}
adapter.gameObject.SetActive(false);
adapter.transform.SetParent(this.adaptersPoolContainer.transform);
}