/// <summary>
/// 拷贝的构造函数。
/// </summary>
/// <param name="layer"></param>
public Layer(Layer layer)
{
if (layer == null) throw new ArgumentNullException();
this.Bounds = new Rectangle2D(layer.Bounds);
this.Caption = layer.Caption;
this.Description = layer.Description;
this.Name = layer.Name;
this.Queryable = layer.Queryable;
this.SubLayers = new LayerCollection();
}
/// <summary>
/// 搜索指定的对象，并返回整个 LayerCollection中第一个匹配项的从零开始的索引。
/// </summary>
/// <param name="item">查找的对象。</param>
/// <returns>查找对象的索引。</returns>
public int IndexOf(Layer item)
{
if (this.Layers != null)
return Layers.IndexOf(item);
else
throw new ArgumentNullException();
}
/// <summary>
/// 图层集合中是否包含指定的图层。
/// </summary>
/// <param name="item">指定的图层对象。</param>
/// <returns>是否存在包含的图层。</returns>
public bool Contains(Layer item)
{
if (this.Layers != null)
return Layers.Contains(item);
else
throw new ArgumentNullException();
}
/// <summary>
/// 根据指定的索引将图层对象插入到指定的位置。
/// </summary>
/// <param name="index">图层索引。</param>
/// <param name="item">图层对象。</param>
public void Insert(int index, Layer item)
{
if (this.Layers != null)
Layers.Insert(index, item);
else
throw new ArgumentNullException();
}
/// <summary>
/// 往图层集中增加一个图层对象。
/// </summary>
/// <param name="item">图层对象。</param>
public void Add(Layer item)
{
if (this.Layers != null)
Layers.Add(item);
else
throw new ArgumentNullException();
}