/// <summary>
/// 重写OnInsertComplete，插入集合完成后将控件加入父控件
/// </summary>
/// <param name="index">从零开始的索引，在该处插入 value</param>
/// <param name="value">在 index 处的元素的新值</param>
protected override void OnInsertComplete(int index, object value)
{
base.OnInsertComplete(index, value);
if (InsertComplete != null)
{
ItemChangedEventArgs e = new ItemChangedEventArgs(index, (ListImageItem)value);
InsertComplete(this, e);
}
}
/// <summary>
/// 重写OnInsertComplete，移除集合完成后将控件从父控件中移除
/// </summary>
/// <param name="index">从零开始的索引，可在该位置找到 value</param>
/// <param name="value">要从 index 移除的元素的值</param>
protected override void OnRemoveComplete(int index, object value)
{
if (RemoveComplete != null)
{
ItemChangedEventArgs e = new ItemChangedEventArgs(index, (ListImageItem)value);
RemoveComplete(this, e);
}
base.OnRemoveComplete(index, value);
}
/// <summary>
/// 向集合中插入指定项
/// </summary>
/// <param name="index"></param>
/// <param name="item"></param>
public void Insert(int index, ListImageItem item)
{
InnerList.Insert(index, item);
if (InsertComplete != null)
{
ItemChangedEventArgs e = new ItemChangedEventArgs(index, item);
InsertComplete(this, e);
}
}
/// <summary>
/// 从集合中移除指定项
/// </summary>
/// <param name="item">指定ListImageItem</param>
public void Remove(ListImageItem item)
{
if (RemoveComplete != null)
{
ItemChangedEventArgs e = new ItemChangedEventArgs(IndexOf(item), item);
RemoveComplete(this, e);
}
InnerList.Remove(item);
}
/// <summary>
/// 添加一TrasenClasses.GeneralControls.ListImageItem到集合中
/// </summary>
/// <param name="item"></param>
/// <returns></returns>
public int Add(ListImageItem item)
{
if (Contains(item))
{
return(-1);
}
int index = InnerList.Add(item);
if (InsertComplete != null)
{
ItemChangedEventArgs e = new ItemChangedEventArgs(index, item);
InsertComplete(this, e);
}
return(index);
}
private void Items_InsertComplete(object sender, ItemChangedEventArgs e)
{
if (this.LargeImageList != null)
{
e.Item.LargeImageList = this.LargeImageList;
}
if (this.SmallImageList != null)
{
e.Item.SmallImageList = this.SmallImageList;
}
e.Item.View = _view;
e.Item.Width = this.Width - _hInterval * 2;
e.Item.Left = _hInterval;
e.Item.ForeColor = this.ForeColor;
if (e.Index == 0)
{
if (_captionVisible)
{
e.Item.Top = _vInterval + _captionFont.Height + 2;
}
else
{
e.Item.Top = _vInterval;
}
}
else
{
e.Item.Top = _vInterval + _items[e.Index - 1].Top + _items[e.Index - 1].Height;
}
if (e.Index != _items.Count - 1) //如果是不是插入到最后
{
for (int i = e.Index + 1; i < _items.Count - 1; i++)
{
_items[i].Top = _vInterval + _items[i - 1].Top + _items[i - 1].Height;
}
}
e.Item.Click += new EventHandler(Item_Click);
if (ItemDoubleClick != null)
{
e.Item.DoubleClick += ItemDoubleClick;
}
this.Controls.Add(e.Item);
}
private void Items_RemoveComplete(object sender, ItemChangedEventArgs e)
{
this.Controls.Remove(e.Item);
}
