/// <summary>
/// Calculated selected indicies of new items .
/// </summary>
/// <returns>The selected indicies.</returns>
/// <param name="newItems">New items.</param>
List <int> NewSelectedIndicies(ObservableList <string> newItems)
{
var selected_indicies = new List <int>();
if (newItems.Count == 0)
{
return(selected_indicies);
}
//duplicated items should not be selected more than at start
var new_items_copy = new List <string>(newItems);
var selected_items = SelectedIndicies.Convert <int, string>(GetDataItem);
selected_items = selected_items.Where(x => {
var is_valid_item = newItems.Contains(x);
if (is_valid_item)
{
new_items_copy.Remove(x);
}
return(is_valid_item);
}).ToList();
newItems.ForEach((item, index) => {
if (selected_items.Contains(item))
{
selected_items.Remove(item);
selected_indicies.Add(index);
}
});
return(selected_indicies);
}
/// <summary>
/// Updates the items.
/// </summary>
/// <param name="newItems">New items.</param>
void SetNewItems(ObservableList <string> newItems)
{
DataSource.OnChange -= UpdateItems;
if (Sort && SortFunc != null)
{
newItems.BeginUpdate();
var sorted = SortFunc(newItems).ToArray();
newItems.Clear();
newItems.AddRange(sorted);
newItems.EndUpdate();
}
SilentDeselect(SelectedIndicies);
var new_selected_indicies = SelectedItemsCache.Convert <string, int>(newItems.IndexOf);
new_selected_indicies.RemoveAll(IndexNotFound);
dataSource = newItems;
SilentSelect(new_selected_indicies);
SelectedItemsCache = SelectedIndicies.Convert <int, string>(GetDataItem);
UpdateView();
DataSource.OnChange += UpdateItems;
}
/// <summary>
/// Start this instance.
/// </summary>
public override void Start()
{
if (isStartedListView)
{
return;
}
isStartedListView = true;
base.Start();
base.Items = new List <ListViewItem>();
SelectedItemsCache = SelectedIndicies.Convert <int, string>(GetDataItem);
DestroyGameObjects = false;
if (DefaultItem == null)
{
throw new NullReferenceException("DefaultItem is null. Set component of type ImageAdvanced to DefaultItem.");
}
DefaultItem.gameObject.SetActive(true);
if (DefaultItem.GetComponentInChildren <Text>() == null)
{
throw new MissingComponentException("DefaultItem don't have child with 'Text' component. Add child with 'Text' component to DefaultItem.");
}
if (CanOptimize())
{
ScrollRect = scrollRect;
var scrollRectTransform = scrollRect.transform as RectTransform;
scrollHeight = scrollRectTransform.rect.height;
scrollWidth = scrollRectTransform.rect.width;
layout = Container.GetComponent <LayoutGroup>();
if (layout is EasyLayout.EasyLayout)
{
LayoutBridge = new EasyLayoutBridge(layout as EasyLayout.EasyLayout, DefaultItem.transform as RectTransform);
LayoutBridge.IsHorizontal = IsHorizontal();
}
else if (layout is HorizontalOrVerticalLayoutGroup)
{
LayoutBridge = new StandardLayoutBridge(layout as HorizontalOrVerticalLayoutGroup, DefaultItem.transform as RectTransform);
}
CalculateItemSize();
CalculateMaxVisibleItems();
}
DefaultItem.gameObject.SetActive(false);
UpdateItems();
OnSelect.AddListener(OnSelectCallback);
OnDeselect.AddListener(OnDeselectCallback);
}
