public void UpdateViews(ChildAdapterModel model)
{
titleText.text = model.title;
introImage.sprite = model.introImage;
//float curPos = childGrid.GetNormalizedPosition();
//if (curPos != model.normalizedScrollPos)
// childGrid.SetNormalizedPosition(model.normalizedScrollPos);
}
/// <inheritdoc/>
protected override void UpdateViewsHolder(ChildAdapterViewsHolder newOrRecycled)
{
// Initialize the views from the associated model
ChildAdapterModel childAdapterModel = Data[newOrRecycled.ItemIndex];
newOrRecycled.UpdateViews(childAdapterModel);
if (childAdapterModel.items == null) // first time updating the child scroll view => download initial items
{
TryDownloadingSomeItemsForChildScrollView(newOrRecycled, childAdapterModel, UnityEngine.Random.Range(1, 100), false);
}
else
{
newOrRecycled.childGrid.SetItemsAndUpdate(childAdapterModel.items); // already having the items => update directly
}
}
void TryDownloadingSomeItemsForChildScrollView(ChildAdapterViewsHolder viewsHolder, ChildAdapterModel childScrollViewModel, int count, bool append)
{
viewsHolder.childGrid.SetWaitingForData(true);
//int itemsCountAtRequest = _Params.Data.Count;
//int vhIndexAtRequest = newOrRecycled.ItemIndex;
Coroutine coroutine = null;
int nextFreeId = viewsHolder.childGrid.GetItemsCount(); // the "id" (used only to show it in TitleText) for the first downloaded item is the current items count;
viewsHolder.modelsDownloadingCoroutine = coroutine = StartCoroutine(SimulateDownloadChildItemsCoroutine(
count,
nextFreeId,
downloadedItems =>
{
// Use the results only if the ViewsHolder wasn't recycled meanwhile
//if (itemsCountAtRequest == _Params.Data.Count
// && newOrRecycled.ItemIndex == vhIndexAtRequest)
if (viewsHolder.modelsDownloadingCoroutine == null || viewsHolder.modelsDownloadingCoroutine != coroutine)
{
return;
}
viewsHolder.modelsDownloadingCoroutine = null; // done
// The childScrollViewModel keeps track of items, because the
// child script is not a "persistent storage" - it's being constantly recycled
if (append) // append is faster
{
childScrollViewModel.items.AddRange(downloadedItems);
viewsHolder.childGrid.AddItemsAndUpdate(downloadedItems);
}
else
{
childScrollViewModel.items = new List <MyCellModel>(downloadedItems);
viewsHolder.childGrid.SetItemsAndUpdate(downloadedItems);
}
}));
}
