/// <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>
/// Update data list.
/// </summary>
public void Update()
{
if (inUpdate)
{
isChanged = true;
return;
}
if (Data == null)
{
return;
}
Data.BeginUpdate();
Data.Clear();
var groups = GroupsWithItems.Keys.ToList();
if (GroupComparison != null)
{
groups.Sort(GroupComparison);
}
groups.ForEach(group => {
Data.Add(group);
Data.AddRange(GroupsWithItems[group]);
});
Data.EndUpdate();
}
/// <summary>
/// Insert groups with items to the Data list.
/// </summary>
protected virtual void InsertGroups()
{
var groups = new List <T>(GroupsWithItems.Keys);
if (GroupComparison != null)
{
groups.Sort(GroupComparison);
}
groups.ForEach(group =>
{
Data.Add(group);
for (var i = 1; i < ItemsPerBlock; i++)
{
Data.Add(EmptyGroupItem);
}
var items = GroupsWithItems[group];
Data.AddRange(items);
if (ItemsPerBlock > 0)
{
var n = items.Count % ItemsPerBlock;
if (n > 0)
{
for (var i = n; i < ItemsPerBlock; i++)
{
Data.Add(EmptyItem);
}
}
}
});
}
/// <summary>
/// Updates the items.
/// </summary>
/// <param name="newItems">New items.</param>
protected virtual void SetNewItems(ObservableList <TItem> newItems)
{
//Start();
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 <TItem, int>(newItems.IndexOf);
new_selected_indicies.RemoveAll(IndexNotFound);
dataSource = newItems;
if (KeepSelection)
{
SilentSelect(new_selected_indicies);
}
SelectedItemsCache = SelectedItems;
UpdateView();
DataSource.OnChange += UpdateItems;
}
