/// <summary>
/// Adds a <see cref="ToolItem"/> to the collection.
/// </summary>
/// <param name="item">The <see cref="ToolItem"/> to add to the collection.</param>
/// <returns>The position into which the new element was inserted.</returns>
public int Add(ToolItem item)
{
if (item == null)
{
throw new ArgumentNullException("item");
}
if (_isTrackingViewState)
{
((IStateManager)item).TrackViewState();
item.SetDirty();
}
return(_items.Add(item));
}
/// <summary>
/// When implemented by a class, saves the changes to a server control's view state to an
/// <see cref="T:System.Object"/> .
/// </summary>
/// <returns>
/// The <see langword="Object"/> that contains the view state changes.
/// </returns>
public object SaveViewState()
{
if (_saveAll == true)
{
// Save all items.
ArrayList states = new ArrayList(Count);
for (int i = 0; i < Count; i++)
{
ToolItem toolItem = (ToolItem)_items[i];
toolItem.SetDirty();
states.Add(((IStateManager)toolItem).SaveViewState());
}
if (states.Count > 0)
{
return(states);
}
else
{
return(null);
}
}
else
{
// Save only the dirty items.
ArrayList indices = new ArrayList();
ArrayList states = new ArrayList();
for (int i = 0; i < Count; i++)
{
ToolItem toolItem = (ToolItem)_items[i];
object state = ((IStateManager)toolItem).SaveViewState();
if (state != null)
{
states.Add(state);
indices.Add(i);
}
}
if (indices.Count > 0)
{
return(new Pair(indices, states));
}
}
return(null);
}
