public void Remove(object obj)
{
Debug.Assert(obj != null, "obj为null");
if (obj == null)
{
return;
}
if (_currentCodon == null)
{
return;
}
IBindingListEx bindingList = GetBindingList(_currentCodon);
if (bindingList == null)
{
return;
}
Debug.Assert(bindingList.Contains(obj), "_bindingList中没有指定对象");
if (bindingList.Contains(obj) == false)
{
return;
}
if (_currentCodon.Compatible(obj))
{
bindingList.Remove(obj);
}
}
public void Remove <T>(Filter <T> filter) where T : class
{
Debug.Assert(filter != null, "Filter 为 null");
if (filter == null)
{
return;
}
if (_currentCodon == null)
{
return;
}
IBindingListEx bindingList = GetBindingList(_currentCodon);
if (bindingList == null || bindingList.Count == 0)
{
return;
}
Type tType = typeof(T);
if (_currentCodon.UpwardCompatible(tType) == false &&
_currentCodon.Compatible(tType) == false)
{
return;
}
List <object> willbeDelete = new List <object>();
for (int i = 0; i < bindingList.Count; i++)
{
object obj = bindingList[i];
//在使用复合 codon 时，BindingList 中会存在多种不同类型的对象
//所以必须先判断对象是否是泛型参数类型的向下兼容类型
if (Compatible(tType, obj.GetType()) && filter((T)obj))
{
willbeDelete.Add(obj);
}
}
foreach (var item in willbeDelete)
{
bindingList.Remove(item);
}
}
/// <summary>
/// 把目标对象移动到另一个对象之后
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="sourceFilter"></param>
/// <param name="targetFilter"></param>
public void MoveAfter <T>(Filter <T> sourceFilter, Filter <T> targetFilter) where T : class
{
object sourceObj, targetObj;
GetMoveObject <T>(sourceFilter, targetFilter, out sourceObj, out targetObj);
//Debug.Assert(sourceObj != null && targetObj != null, "指定的对象为null");
if (sourceObj == null && targetObj == null)
{
return;
}
Debug.Assert(sourceObj != targetObj, "指定的两个对象是同一个对象");
if (sourceObj == targetObj)
{
return;
}
if (_currentCodon == null)
{
return;
}
IBindingListEx bindingList = GetBindingList(_currentCodon);
int sourceIndex = bindingList.IndexOf(sourceObj);
int targetIndex = bindingList.IndexOf(targetObj);
//如果targetObj刚好在beforeObj之后，就无需移动了
if (sourceIndex - targetIndex == 1)
{
return;
}
bindingList.Remove(sourceObj);
//要重新 IndexOf(beforeObj) ，因为targetObj被remove之后，beforeObj的下标就可能被改变了
bindingList.Insert(bindingList.IndexOf(targetObj) + 1, sourceObj);
}