public void CopyFrom(BaseObjectList value, int startIndex, int endIndex)
{
//整个复制过程完成后，再通知列表发生变化了
objects.CollectionChanged -= this.OnCollectionChanged;
this.Clear();
_copyed.Clear();
if (endIndex > this.objects.Count)
{
endIndex = value.objects.Count;
}
for (int i = startIndex; i < endIndex; i++)
{
GeneralObject obj = value[i];
GeneralObject ngo = new GeneralObject();
ngo.CopyFrom(obj);
Add(ngo);
_copyed.Add(ngo);
}
//发送列表变化通知, 新增对象为列表本身
NotifyCollectionChangedEventArgs args = new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset);
this.OnCollectionChanged(args);
//还原继续监听列表单个数据变化过程
objects.CollectionChanged += this.OnCollectionChanged;
IsModified = false;
}
public void CopyFrom(BaseObjectList value)
{
//整个复制过程完成后，再通知列表发生变化了
objects.CollectionChanged -= this.OnCollectionChanged;
this.Clear();
_copyed.Clear();
foreach (GeneralObject obj in value)
{
//如果对象是列表中新增的编辑对象，不复制
if (obj.List != null && obj.List.EmptyRow == obj)
{
continue;
}
GeneralObject ngo = new GeneralObject();
ngo.CopyFrom(obj);
Add(ngo);
_copyed.Add(ngo);
}
//发送列表变化通知, 新增对象为列表本身
NotifyCollectionChangedEventArgs args = new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset);
this.OnCollectionChanged(args);
//还原继续监听列表单个数据变化过程
objects.CollectionChanged += this.OnCollectionChanged;
IsModified = false;
}
public void NewPropertyValue(string propertyName)
{
//有属性默认值
var p = (from ps in PropertySetters where ps.PropertyName == propertyName select ps).FirstOrDefault();
if (p != null && p.Default != null)
{
//设置默认属性结果
SetPropertyValue(propertyName, p.Default, true, true);
//如果默认属性是列表，调用列表的New过程
if (p.Default is BaseObjectList)
{
(p.Default as BaseObjectList).New();
}
}
//有默认对象，复制默认对象
else if (p != null && p.DefaultObject != null)
{
if (p.DefaultObject is GeneralObject)
{
//复制默认对象到新对象
GeneralObject go = p.DefaultObject as GeneralObject;
GeneralObject ngo = new GeneralObject();
ngo.CopyFrom(go);
p.Object.SetPropertyValue(p.PropertyName, ngo, false, true);
}
else if (p.DefaultObject is ObjectList)
{
//复制默认对象到新对象
ObjectList go = p.DefaultObject as ObjectList;
ObjectList ngo = new ObjectList();
ngo.CopyFrom(go);
p.Object.SetPropertyValue(p.PropertyName, ngo, false, true);
}
}
else
{
//如果属性是集合
if (GetProperty(propertyName).PropertyType == typeof(BaseObjectList))
{
//如果属性存在，清空集合
BaseObjectList old = (BaseObjectList)this.GetPropertyValue(propertyName);
if (old != null)
{
old.New();
}
//否则，无不置空标记，设置一个空集合
else if (!NotEmpty)
{
SetPropertyValue(propertyName, new ObjectList(), true);
}
}
else
{
SetPropertyValue(propertyName, null, true, true);
}
}
}
private static void OnHasEmptyRowChanged(DependencyObject o, DependencyPropertyChangedEventArgs e)
{
BaseObjectList list = (BaseObjectList)o;
if (e.NewValue != null && (bool)e.NewValue)
{
list.CreateEmpty();
}
}
public static void OnDefaultChanged(DependencyObject dp, DependencyPropertyChangedEventArgs args)
{
BaseObjectList ol = (BaseObjectList)dp;
//如果列表为空，把默认值添加到列表中
if (ol.Count == 0)
{
ol.Add(ol.Default);
}
}
/// <summary>
/// 路径改变时，获取数据
/// </summary>
/// <param name="dp">自身</param>
/// <param name="args">新值参数</param>
public static void OnPathChanged(DependencyObject dp, DependencyPropertyChangedEventArgs args)
{
//分页组件有MultiPath时，在MultiPath时加载数据，Path发生改变时不加载数据
if (dp is PagedObjectList && ((PagedObjectList)dp).MultiPath != null)
{
return;
}
BaseObjectList ol = (BaseObjectList)dp;
//如果指明Path改变时，不加载数据，则只有当外界要求，加载数据时，才加载
if (ol.LoadOnPathChanged)
{
ol.Load();
}
}
//设置列表属性，设置时，将监听其IsModified属性改变事件
private void SetCollectionProperty(string key, BaseObjectList ol)
{
//如果有默认对象，且要设置的列表为空，采用默认对象的复制结果
var p = (from ps in PropertySetters where ps.PropertyName == key select ps).FirstOrDefault();
if (p != null && p.DefaultObject != null && (ol == null || ol.Count == 0))
{
//复制默认对象到新对象
ObjectList go = p.DefaultObject as ObjectList;
ObjectList ngo = new ObjectList();
ngo.CopyFrom(go);
ol = ngo;
}
SetPropertyValue(key, ol, true);
ol.Watch("IsModified", ol_PropertyChanged);
}
private static void OnEmptyRowChanged(DependencyObject o, DependencyPropertyChangedEventArgs e)
{
BaseObjectList list = (BaseObjectList)o;
//清除旧的空行的监听
if (e.OldValue != null)
{
GeneralObject go = (GeneralObject)e.OldValue;
go.DynamicPropertyChanged -= list.EmptyRowChanged;
}
//新加空行在动态属性变化后，在列表最后添加新空行
if (e.NewValue != null)
{
GeneralObject go = (GeneralObject)e.NewValue;
go.DynamicPropertyChanged += list.EmptyRowChanged;
}
}
private static void OnSourceChanged(DependencyObject o, DependencyPropertyChangedEventArgs e)
{
BaseObjectList list = (BaseObjectList)o;
list.OnSourceChanged();
}
public MyList(BaseObjectList list)
{
_list = list;
list.PropertyChanged += list_PropertyChanged;
}
public int IndexOf(BaseObjectList list)
{
return(list.IndexOf(this));
}
