/// <summary>
/// Removes the first occurrence of a specific object from the
/// <see cref="T:System.Collections.Generic.ICollection`1" />.
/// </summary>
/// <param name="item">The object to remove from the <see cref="T:System.Collections.Generic.ICollection`1" />.</param>
/// <returns>
/// true if <paramref name="item" /> was successfully removed from the
/// <see cref="T:System.Collections.Generic.ICollection`1" />; otherwise, false. This method also returns false if
/// <paramref name="item" /> is not found in the original <see cref="T:System.Collections.Generic.ICollection`1" />.
/// </returns>
public virtual bool Remove(T item)
{
var index = ItemsCore.IndexOf(item);
if (index < 0)
{
return(false);
}
ItemsCore.RemoveAt(index);
return(true);
}
/// <summary>
/// Replaces an item in the selector's collection.
/// </summary>
/// <param name="prevItem">The item to replace.</param>
/// <param name="newItem">The item to replace <paramref name="prevItem" /> with.</param>
/// <returns>true if the item could be replaced; otherwise, false.</returns>
public virtual bool Replace(T prevItem, T newItem)
{
var index = ItemsCore.IndexOf(prevItem);
if (index < 0)
{
return(false);
}
ItemsCore[index] = newItem;
return(true);
}
/// <summary>
/// Replaces an item in the selector's collection and selects the new item.
/// </summary>
/// <param name="prevItem">The item to replace.</param>
/// <param name="newItem">The item to replace <paramref name="prevItem" /> with.</param>
/// <returns>true if the item could be replaced; otherwise, false.</returns>
public virtual bool ReplaceAndSelect(T prevItem, T newItem)
{
var index = ItemsCore.IndexOf(prevItem);
if (index < 0)
{
return(false);
}
if (index == SelectedIndex)
{
SelectedIndex = -1;
}
ItemsCore[index] = newItem;
SelectedIndex = index;
return(true);
}
/// <summary>
/// Determines the index of a specific item in the <see cref="T:System.Collections.Generic.IList`1" />.
/// </summary>
/// <param name="item">The object to locate in the <see cref="T:System.Collections.Generic.IList`1" />.</param>
/// <returns>
/// The index of <paramref name="item" /> if found in the list; otherwise, -1.
/// </returns>
public int IndexOf(T item)
{
return(ItemsCore.IndexOf(item));
}