/// <summary>
/// Calculate and sets the width of the items.
/// </summary>
/// <param name="items">Items.</param>
/// <param name="forceUpdate">If set to <c>true</c> force update.</param>
public override void CalculateItemsSizes(ObservableList <TItem> items, bool forceUpdate = true)
{
RemoveOldItems(items);
if (Owner.PrecalculateItemSizes)
{
Owner.DefaultItemCopy.gameObject.SetActive(true);
if (Owner.DefaultItemLayout == null)
{
Owner.DefaultItemLayout = Owner.DefaultItemCopy.GetComponent <LayoutGroup>();
Owner.DefaultItemNestedLayouts = Owner.DefaultItemCopy.GetComponentsInChildren <LayoutGroup>();
Array.Reverse(Owner.DefaultItemNestedLayouts);
}
if (forceUpdate)
{
items.ForEach(x =>
{
ItemSizes[x] = CalculateComponentSize(x);
});
}
else
{
foreach (var item in items)
{
if (!ItemSizes.ContainsKey(item))
{
ItemSizes[item] = CalculateComponentSize(item);
}
}
}
Owner.DefaultItemCopy.gameObject.SetActive(false);
}
else
{
if (forceUpdate)
{
items.ForEach(x =>
{
ItemSizes[x] = Owner.ItemSize;
});
}
else
{
foreach (var item in items)
{
if (!ItemSizes.ContainsKey(item))
{
ItemSizes[item] = Owner.ItemSize;
}
}
}
}
}
/// <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>
/// Calculate and sets the height of the items.
/// </summary>
/// <param name="items">Items.</param>
/// <param name="forceUpdate">If set to <c>true</c> force update.</param>
void CalculateItemsSizes(ObservableList <TItem> items, bool forceUpdate = true)
{
// remove old items
ItemSizes.Keys.Except(items).ToArray().ForEach(x => ItemSizes.Remove(x));
if (defaultItemLayoutGroup == null)
{
DefaultItemCopy.gameObject.SetActive(true);
defaultItemLayoutGroup = DefaultItemCopy.GetComponent <LayoutGroup>();
}
if (forceUpdate)
{
DefaultItemCopy.gameObject.SetActive(true);
items.ForEach(x => {
ItemSizes[x] = CalculateComponentSize(x);
});
DefaultItemCopy.gameObject.SetActive(false);
}
else
{
items.Except(ItemSizes.Keys).ForEach(x => {
ItemSizes[x] = CalculateComponentSize(x);
});
}
}
void CollectionChanged()
{
if (nodes == null)
{
return;
}
nodes.ForEach(SetParent);
}
/// <summary>
/// Calculate and sets the height of the items.
/// </summary>
/// <param name="items">Items.</param>
/// <param name="forceUpdate">If set to <c>true</c> force update.</param>
void SetItemsHeight(ObservableList <TItem> items, bool forceUpdate = true)
{
items.ForEach(x => {
if ((x.Height == 0) || forceUpdate)
{
x.Height = CalculateItemHeight(x);
}
});
}
/// <summary>
/// Calculate and sets the width of the items.
/// </summary>
/// <param name="items">Items.</param>
/// <param name="forceUpdate">If set to <c>true</c> force update.</param>
void SetItemsWidth(ObservableList <TItem> items, bool forceUpdate = true)
{
items.ForEach(x => {
if ((x.Width == 0) || forceUpdate)
{
x.Width = CalculateItemWidth(x);
}
});
}
/// <summary>
/// Load subnodes data for specified nodes.
/// </summary>
/// <param name="nodes">Nodes.</param>
public virtual void LoadNodes(ObservableList <TreeNode <FileSystemEntry> > nodes)
{
nodes.BeginUpdate();
try
{
nodes.ForEach(LoadNode);
}
finally
{
nodes.EndUpdate();
}
}
/// <summary>
/// Calculate and sets the height of the items.
/// </summary>
/// <param name="items">Items.</param>
/// <param name="forceUpdate">If set to <c>true</c> force update.</param>
void SetItemsHeight(ObservableList <TItem> items, bool forceUpdate = true)
{
if (defaultItemLayoutGroup == null)
{
DefaultItemCopy.gameObject.SetActive(true);
defaultItemLayoutGroup = DefaultItemCopy.GetComponent <LayoutGroup>();
}
DefaultItemCopy.gameObject.SetActive(true);
items.ForEach(x => {
if ((x.Height == 0) || forceUpdate)
{
x.Height = CalculateItemHeight(x);
}
});
DefaultItemCopy.gameObject.SetActive(false);
}
