public void Attach(ChildEventHandler eventHandler)
{
ChildEventHandler = eventHandler;
Value.CollectionChanged += Value_CollectionChanged;
Value.PropertyValueChanging += Value_PropertyValueChanging;
Value.PropertyValueChanged += Value_PropertyValueChanged;
Value.ChildEventForwarded += Value_ChildEventForwarded;
}
protected virtual void FireNextEvent(object e)
{
ChildEventHandler handler = NextEvent;
if (handler != null)
{
handler(e);
}
}
protected virtual void FireWaitIconEvent(object e)
{
ChildEventHandler handler = WaitIconEvent;
if (handler != null)
{
handler(e);
}
}
#pragma warning restore
protected virtual void FireQuitEvent(object e)
{
//实例化委托事件，并发起调用
ChildEventHandler handler = QuitEvent;
if (handler != null)
{
handler(e);
}
}
public void Dettach()
{
if (ChildEventHandler != null)
{
Value.CollectionChanged -= Value_CollectionChanged;
Value.PropertyValueChanging -= Value_PropertyValueChanging;
Value.PropertyValueChanged -= Value_PropertyValueChanged;
Value.ChildEventForwarded -= Value_ChildEventForwarded;
ChildEventHandler = null;
}
}
