private static void BoardPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
(d as DesignerCanvas).Children.Clear();
//初始化可视元素
foreach (DesignerControl obj in (e.NewValue as DesignerBoard).VisualChildren)
{
UserControl u = BoardControlFactory.CreateBoardControlByDesignerType(obj.GetType(), obj);
(d as DesignerCanvas).AddDesignerItem(u, new Point((obj as DesignerControl).Position.Location.X, (obj as DesignerControl).Position.Location.Y));
}
//注册后台元素
foreach (DesignerDataSource ds in (e.NewValue as DesignerBoard).BackChildren)
{
DataSourceManager.Register(ds.Name, ds.DataSourceType, ds);
switch (ds.DataSourceType)
{
case DesignerDataSourceType.DataBase:
DataBaseDataSourceManager.UpdateDataBaseDataSource(ds as DesignerDataBaseDataSource);
break;
case DesignerDataSourceType.StaticText:
StaticTextDataSourceManager.UpdateStaticTextDataSource(ds as DesignerStaticTextDataSource);
break;
}
}
((DesignerCanvas)d).SelectItem = e.NewValue as DesignerBoard;
}
protected override void OnDrop(DragEventArgs e)
{
base.OnDrop(e);
string controlName = e.Data.GetData("NewItem") as string;
if (!String.IsNullOrEmpty(controlName))
{
try
{
ControlWrapper wrapper = BoardControlFactory.CreateCandyByName(controlName);
object candy = wrapper.Tear();
if (candy != null)
{
Point location = e.GetPosition(this);
AddDesignerItem(candy, location);
}
}
catch (Exception ex)
{ MessageBox.Show(ex.Message); }
e.Handled = true;
}
}
